/*
* qemu_driver.c: core driver methods for managing qemu guests
*
* Copyright (C) 2006-2016 Red Hat, Inc.
* Copyright (C) 2006 Daniel P. Berrange
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see
* .
*/
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include "qemu_driver.h"
#include "qemu_agent.h"
#include "qemu_alias.h"
#include "qemu_block.h"
#include "qemu_conf.h"
#include "qemu_capabilities.h"
#include "qemu_command.h"
#include "qemu_parse_command.h"
#include "qemu_cgroup.h"
#include "qemu_hostdev.h"
#include "qemu_hotplug.h"
#include "qemu_monitor.h"
#include "qemu_process.h"
#include "qemu_migration.h"
#include "qemu_migration_params.h"
#include "qemu_blockjob.h"
#include "qemu_security.h"
#include "virerror.h"
#include "virlog.h"
#include "datatypes.h"
#include "virbuffer.h"
#include "virhostcpu.h"
#include "virhostmem.h"
#include "virnetdevtap.h"
#include "virnetdevopenvswitch.h"
#include "capabilities.h"
#include "viralloc.h"
#include "virarptable.h"
#include "viruuid.h"
#include "domain_conf.h"
#include "domain_audit.h"
#include "node_device_conf.h"
#include "virpci.h"
#include "virusb.h"
#include "virprocess.h"
#include "libvirt_internal.h"
#include "virxml.h"
#include "cpu/cpu.h"
#include "virsysinfo.h"
#include "domain_nwfilter.h"
#include "virhook.h"
#include "virstoragefile.h"
#include "virfile.h"
#include "virfdstream.h"
#include "configmake.h"
#include "virthreadpool.h"
#include "locking/lock_manager.h"
#include "locking/domain_lock.h"
#include "virkeycode.h"
#include "virnodesuspend.h"
#include "virtime.h"
#include "virtypedparam.h"
#include "virbitmap.h"
#include "virstring.h"
#include "viraccessapicheck.h"
#include "viraccessapicheckqemu.h"
#include "virhostdev.h"
#include "domain_capabilities.h"
#include "vircgroup.h"
#include "virperf.h"
#include "virnuma.h"
#include "dirname.h"
#include "netdev_bandwidth_conf.h"
#define VIR_FROM_THIS VIR_FROM_QEMU
VIR_LOG_INIT("qemu.qemu_driver");
#define QEMU_NB_MEM_PARAM 3
#define QEMU_NB_BLOCK_IO_TUNE_BASE_PARAMS 6
#define QEMU_NB_BLOCK_IO_TUNE_MAX_PARAMS 7
#define QEMU_NB_BLOCK_IO_TUNE_LENGTH_PARAMS 6
#define QEMU_NB_BLOCK_IO_TUNE_GROUP_PARAMS 1
#define QEMU_NB_BLOCK_IO_TUNE_ALL_PARAMS (QEMU_NB_BLOCK_IO_TUNE_BASE_PARAMS + \
QEMU_NB_BLOCK_IO_TUNE_MAX_PARAMS + \
QEMU_NB_BLOCK_IO_TUNE_GROUP_PARAMS + \
QEMU_NB_BLOCK_IO_TUNE_LENGTH_PARAMS)
#define QEMU_NB_NUMA_PARAM 2
#define QEMU_SCHED_MIN_PERIOD 1000LL
#define QEMU_SCHED_MAX_PERIOD 1000000LL
#define QEMU_SCHED_MIN_QUOTA 1000LL
#define QEMU_SCHED_MAX_QUOTA 18446744073709551LL
#define QEMU_GUEST_VCPU_MAX_ID 4096
#define QEMU_NB_BLKIO_PARAM 6
#define QEMU_NB_BANDWIDTH_PARAM 7
static void qemuProcessEventHandler(void *data, void *opaque);
static int qemuStateCleanup(void);
static int qemuDomainObjStart(virConnectPtr conn,
virQEMUDriverPtr driver,
virDomainObjPtr vm,
unsigned int flags,
qemuDomainAsyncJob asyncJob);
static int qemuDomainManagedSaveLoad(virDomainObjPtr vm,
void *opaque);
static int qemuOpenFileAs(uid_t fallback_uid, gid_t fallback_gid,
bool dynamicOwnership,
const char *path, int oflags,
bool *needUnlink);
static int qemuGetDHCPInterfaces(virDomainPtr dom,
virDomainObjPtr vm,
virDomainInterfacePtr **ifaces);
static int qemuARPGetInterfaces(virDomainObjPtr vm,
virDomainInterfacePtr **ifaces);
static virQEMUDriverPtr qemu_driver;
/**
* qemuDomObjFromDomain:
* @domain: Domain pointer that has to be looked up
*
* This function looks up @domain and returns the appropriate virDomainObjPtr
* that has to be released by calling virDomainObjEndAPI().
*
* Returns the domain object with incremented reference counter which is locked
* on success, NULL otherwise.
*/
static virDomainObjPtr
qemuDomObjFromDomain(virDomainPtr domain)
{
virDomainObjPtr vm;
virQEMUDriverPtr driver = domain->conn->privateData;
char uuidstr[VIR_UUID_STRING_BUFLEN];
vm = virDomainObjListFindByUUID(driver->domains, domain->uuid);
if (!vm) {
virUUIDFormat(domain->uuid, uuidstr);
virReportError(VIR_ERR_NO_DOMAIN,
_("no domain with matching uuid '%s' (%s)"),
uuidstr, domain->name);
return NULL;
}
return vm;
}
/* Looks up the domain object from snapshot and unlocks the
* driver. The returned domain object is locked and ref'd and the
* caller must call virDomainObjEndAPI() on it. */
static virDomainObjPtr
qemuDomObjFromSnapshot(virDomainSnapshotPtr snapshot)
{
return qemuDomObjFromDomain(snapshot->domain);
}
/* Looks up snapshot object from VM and name */
static virDomainSnapshotObjPtr
qemuSnapObjFromName(virDomainObjPtr vm,
const char *name)
{
virDomainSnapshotObjPtr snap = NULL;
snap = virDomainSnapshotFindByName(vm->snapshots, name);
if (!snap)
virReportError(VIR_ERR_NO_DOMAIN_SNAPSHOT,
_("no domain snapshot with matching name '%s'"),
name);
return snap;
}
/* Looks up snapshot object from VM and snapshotPtr */
static virDomainSnapshotObjPtr
qemuSnapObjFromSnapshot(virDomainObjPtr vm,
virDomainSnapshotPtr snapshot)
{
return qemuSnapObjFromName(vm, snapshot->name);
}
static int
qemuAutostartDomain(virDomainObjPtr vm,
void *opaque)
{
virQEMUDriverPtr driver = opaque;
int flags = 0;
virQEMUDriverConfigPtr cfg = virQEMUDriverGetConfig(driver);
int ret = -1;
if (cfg->autoStartBypassCache)
flags |= VIR_DOMAIN_START_BYPASS_CACHE;
virObjectLock(vm);
virObjectRef(vm);
virResetLastError();
if (vm->autostart &&
!virDomainObjIsActive(vm)) {
if (qemuProcessBeginJob(driver, vm,
VIR_DOMAIN_JOB_OPERATION_START, flags) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("Failed to start job on VM '%s': %s"),
vm->def->name, virGetLastErrorMessage());
goto cleanup;
}
if (qemuDomainObjStart(NULL, driver, vm, flags,
QEMU_ASYNC_JOB_START) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("Failed to autostart VM '%s': %s"),
vm->def->name, virGetLastErrorMessage());
}
qemuProcessEndJob(driver, vm);
}
ret = 0;
cleanup:
virDomainObjEndAPI(&vm);
virObjectUnref(cfg);
return ret;
}
static void
qemuAutostartDomains(virQEMUDriverPtr driver)
{
virDomainObjListForEach(driver->domains, qemuAutostartDomain, driver);
}
static int
qemuSecurityChownCallback(const virStorageSource *src,
uid_t uid,
gid_t gid)
{
virStorageSourcePtr cpy = NULL;
struct stat sb;
int save_errno = 0;
int ret = -1;
int rv;
rv = virStorageFileSupportsSecurityDriver(src);
if (rv <= 0)
return rv;
if (virStorageSourceIsLocalStorage(src)) {
/* use direct chown for local files so that the file doesn't
* need to be initialized */
if (!src->path)
return 0;
if (stat(src->path, &sb) >= 0) {
if (sb.st_uid == uid &&
sb.st_gid == gid) {
/* It's alright, there's nothing to change anyway. */
return 0;
}
}
if (chown(src->path, uid, gid) < 0)
goto cleanup;
} else {
if (!(cpy = virStorageSourceCopy(src, false)))
goto cleanup;
/* src file init reports errors, return -2 on failure */
if (virStorageFileInit(cpy) < 0) {
ret = -2;
goto cleanup;
}
if (virStorageFileChown(cpy, uid, gid) < 0)
goto cleanup;
}
ret = 0;
cleanup:
save_errno = errno;
virStorageFileDeinit(cpy);
virStorageSourceFree(cpy);
errno = save_errno;
return ret;
}
static int
qemuSecurityInit(virQEMUDriverPtr driver)
{
char **names;
virSecurityManagerPtr mgr = NULL;
virSecurityManagerPtr stack = NULL;
virQEMUDriverConfigPtr cfg = virQEMUDriverGetConfig(driver);
unsigned int flags = 0;
if (cfg->securityDefaultConfined)
flags |= VIR_SECURITY_MANAGER_DEFAULT_CONFINED;
if (cfg->securityRequireConfined)
flags |= VIR_SECURITY_MANAGER_REQUIRE_CONFINED;
if (virQEMUDriverIsPrivileged(driver))
flags |= VIR_SECURITY_MANAGER_PRIVILEGED;
if (cfg->securityDriverNames &&
cfg->securityDriverNames[0]) {
names = cfg->securityDriverNames;
while (names && *names) {
if (!(mgr = qemuSecurityNew(*names,
QEMU_DRIVER_NAME,
flags)))
goto error;
if (!stack) {
if (!(stack = qemuSecurityNewStack(mgr)))
goto error;
} else {
if (qemuSecurityStackAddNested(stack, mgr) < 0)
goto error;
}
mgr = NULL;
names++;
}
} else {
if (!(mgr = qemuSecurityNew(NULL,
QEMU_DRIVER_NAME,
flags)))
goto error;
if (!(stack = qemuSecurityNewStack(mgr)))
goto error;
mgr = NULL;
}
if (virQEMUDriverIsPrivileged(driver)) {
if (cfg->dynamicOwnership)
flags |= VIR_SECURITY_MANAGER_DYNAMIC_OWNERSHIP;
if (virBitmapIsBitSet(cfg->namespaces, QEMU_DOMAIN_NS_MOUNT))
flags |= VIR_SECURITY_MANAGER_MOUNT_NAMESPACE;
if (!(mgr = qemuSecurityNewDAC(QEMU_DRIVER_NAME,
cfg->user,
cfg->group,
flags,
qemuSecurityChownCallback)))
goto error;
if (!stack) {
if (!(stack = qemuSecurityNewStack(mgr)))
goto error;
} else {
if (qemuSecurityStackAddNested(stack, mgr) < 0)
goto error;
}
mgr = NULL;
}
driver->securityManager = stack;
virObjectUnref(cfg);
return 0;
error:
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Failed to initialize security drivers"));
virObjectUnref(stack);
virObjectUnref(mgr);
virObjectUnref(cfg);
return -1;
}
static int
qemuDomainSnapshotLoad(virDomainObjPtr vm,
void *data)
{
char *baseDir = (char *)data;
char *snapDir = NULL;
DIR *dir = NULL;
struct dirent *entry;
char *xmlStr;
char *fullpath;
virDomainSnapshotDefPtr def = NULL;
virDomainSnapshotObjPtr snap = NULL;
virDomainSnapshotObjPtr current = NULL;
unsigned int flags = (VIR_DOMAIN_SNAPSHOT_PARSE_REDEFINE |
VIR_DOMAIN_SNAPSHOT_PARSE_DISKS |
VIR_DOMAIN_SNAPSHOT_PARSE_INTERNAL);
int ret = -1;
virCapsPtr caps = NULL;
int direrr;
virObjectLock(vm);
if (virAsprintf(&snapDir, "%s/%s", baseDir, vm->def->name) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("Failed to allocate memory for "
"snapshot directory for domain %s"),
vm->def->name);
goto cleanup;
}
if (!(caps = virQEMUDriverGetCapabilities(qemu_driver, false)))
goto cleanup;
VIR_INFO("Scanning for snapshots for domain %s in %s", vm->def->name,
snapDir);
if (virDirOpenIfExists(&dir, snapDir) <= 0)
goto cleanup;
while ((direrr = virDirRead(dir, &entry, NULL)) > 0) {
/* NB: ignoring errors, so one malformed config doesn't
kill the whole process */
VIR_INFO("Loading snapshot file '%s'", entry->d_name);
if (virAsprintf(&fullpath, "%s/%s", snapDir, entry->d_name) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Failed to allocate memory for path"));
continue;
}
if (virFileReadAll(fullpath, 1024*1024*1, &xmlStr) < 0) {
/* Nothing we can do here, skip this one */
virReportSystemError(errno,
_("Failed to read snapshot file %s"),
fullpath);
VIR_FREE(fullpath);
continue;
}
def = virDomainSnapshotDefParseString(xmlStr, caps,
qemu_driver->xmlopt,
flags);
if (def == NULL) {
/* Nothing we can do here, skip this one */
virReportError(VIR_ERR_INTERNAL_ERROR,
_("Failed to parse snapshot XML from file '%s'"),
fullpath);
VIR_FREE(fullpath);
VIR_FREE(xmlStr);
continue;
}
snap = virDomainSnapshotAssignDef(vm->snapshots, def);
if (snap == NULL) {
virDomainSnapshotDefFree(def);
} else if (snap->def->current) {
current = snap;
if (!vm->current_snapshot)
vm->current_snapshot = snap;
}
VIR_FREE(fullpath);
VIR_FREE(xmlStr);
}
if (direrr < 0)
virReportError(VIR_ERR_INTERNAL_ERROR,
_("Failed to fully read directory %s"),
snapDir);
if (vm->current_snapshot != current) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("Too many snapshots claiming to be current for domain %s"),
vm->def->name);
vm->current_snapshot = NULL;
}
if (virDomainSnapshotUpdateRelations(vm->snapshots) < 0)
virReportError(VIR_ERR_INTERNAL_ERROR,
_("Snapshots have inconsistent relations for domain %s"),
vm->def->name);
/* FIXME: qemu keeps internal track of snapshots. We can get access
* to this info via the "info snapshots" monitor command for running
* domains, or via "qemu-img snapshot -l" for shutoff domains. It would
* be nice to update our internal state based on that, but there is a
* a problem. qemu doesn't track all of the same metadata that we do.
* In particular we wouldn't be able to fill in the , which is
* pretty important in our metadata.
*/
virResetLastError();
ret = 0;
cleanup:
VIR_DIR_CLOSE(dir);
VIR_FREE(snapDir);
virObjectUnref(caps);
virObjectUnlock(vm);
return ret;
}
static int
qemuDomainNetsRestart(virDomainObjPtr vm,
void *data ATTRIBUTE_UNUSED)
{
size_t i;
virDomainDefPtr def = vm->def;
virObjectLock(vm);
for (i = 0; i < def->nnets; i++) {
virDomainNetDefPtr net = def->nets[i];
if (virDomainNetGetActualType(net) == VIR_DOMAIN_NET_TYPE_DIRECT &&
virDomainNetGetActualDirectMode(net) == VIR_NETDEV_MACVLAN_MODE_VEPA) {
VIR_DEBUG("VEPA mode device %s active in domain %s. Reassociating.",
net->ifname, def->name);
ignore_value(virNetDevMacVLanRestartWithVPortProfile(net->ifname,
&net->mac,
virDomainNetGetActualDirectDev(net),
def->uuid,
virDomainNetGetActualVirtPortProfile(net),
VIR_NETDEV_VPORT_PROFILE_OP_CREATE));
}
}
virObjectUnlock(vm);
return 0;
}
static int
qemuDomainFindMaxID(virDomainObjPtr vm,
void *data)
{
int *driver_maxid = data;
if (vm->def->id > *driver_maxid)
*driver_maxid = vm->def->id;
return 0;
}
/**
* qemuStateInitialize:
*
* Initialization function for the QEMU daemon
*/
static int
qemuStateInitialize(bool privileged,
virStateInhibitCallback callback,
void *opaque)
{
char *driverConf = NULL;
virQEMUDriverConfigPtr cfg;
uid_t run_uid = -1;
gid_t run_gid = -1;
char *hugepagePath = NULL;
char *memoryBackingPath = NULL;
size_t i;
virCPUDefPtr hostCPU = NULL;
unsigned int microcodeVersion = 0;
if (VIR_ALLOC(qemu_driver) < 0)
return -1;
if (virMutexInit(&qemu_driver->lock) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("cannot initialize mutex"));
VIR_FREE(qemu_driver);
return -1;
}
qemu_driver->inhibitCallback = callback;
qemu_driver->inhibitOpaque = opaque;
qemu_driver->privileged = privileged;
if (!(qemu_driver->domains = virDomainObjListNew()))
goto error;
/* Init domain events */
qemu_driver->domainEventState = virObjectEventStateNew();
if (!qemu_driver->domainEventState)
goto error;
/* read the host sysinfo */
if (privileged)
qemu_driver->hostsysinfo = virSysinfoRead();
if (!(qemu_driver->config = cfg = virQEMUDriverConfigNew(privileged)))
goto error;
if (virAsprintf(&driverConf, "%s/qemu.conf", cfg->configBaseDir) < 0)
goto error;
if (virQEMUDriverConfigLoadFile(cfg, driverConf, privileged) < 0)
goto error;
VIR_FREE(driverConf);
if (virQEMUDriverConfigValidate(cfg) < 0)
goto error;
if (virQEMUDriverConfigSetDefaults(cfg) < 0)
goto error;
if (virFileMakePath(cfg->stateDir) < 0) {
virReportSystemError(errno, _("Failed to create state dir %s"),
cfg->stateDir);
goto error;
}
if (virFileMakePath(cfg->libDir) < 0) {
virReportSystemError(errno, _("Failed to create lib dir %s"),
cfg->libDir);
goto error;
}
if (virFileMakePath(cfg->cacheDir) < 0) {
virReportSystemError(errno, _("Failed to create cache dir %s"),
cfg->cacheDir);
goto error;
}
if (virFileMakePath(cfg->saveDir) < 0) {
virReportSystemError(errno, _("Failed to create save dir %s"),
cfg->saveDir);
goto error;
}
if (virFileMakePath(cfg->snapshotDir) < 0) {
virReportSystemError(errno, _("Failed to create snapshot dir %s"),
cfg->snapshotDir);
goto error;
}
if (virFileMakePath(cfg->autoDumpPath) < 0) {
virReportSystemError(errno, _("Failed to create dump dir %s"),
cfg->autoDumpPath);
goto error;
}
if (virFileMakePath(cfg->channelTargetDir) < 0) {
virReportSystemError(errno, _("Failed to create channel target dir %s"),
cfg->channelTargetDir);
goto error;
}
if (virFileMakePath(cfg->nvramDir) < 0) {
virReportSystemError(errno, _("Failed to create nvram dir %s"),
cfg->nvramDir);
goto error;
}
if (virFileMakePath(cfg->memoryBackingDir) < 0) {
virReportSystemError(errno, _("Failed to create memory backing dir %s"),
cfg->memoryBackingDir);
goto error;
}
qemu_driver->qemuImgBinary = virFindFileInPath("qemu-img");
if (!(qemu_driver->lockManager =
virLockManagerPluginNew(cfg->lockManagerName ?
cfg->lockManagerName : "nop",
"qemu",
cfg->configBaseDir,
0)))
goto error;
if (cfg->macFilter) {
if (!(qemu_driver->ebtables = ebtablesContextNew("qemu"))) {
virReportSystemError(errno,
_("failed to enable mac filter in '%s'"),
__FILE__);
goto error;
}
if (ebtablesAddForwardPolicyReject(qemu_driver->ebtables) < 0)
goto error;
}
/* Allocate bitmap for remote display port reservations. We cannot
* do this before the config is loaded properly, since the port
* numbers are configurable now */
if ((qemu_driver->remotePorts =
virPortAllocatorRangeNew(_("display"),
cfg->remotePortMin,
cfg->remotePortMax)) == NULL)
goto error;
if ((qemu_driver->webSocketPorts =
virPortAllocatorRangeNew(_("webSocket"),
cfg->webSocketPortMin,
cfg->webSocketPortMax)) == NULL)
goto error;
if ((qemu_driver->migrationPorts =
virPortAllocatorRangeNew(_("migration"),
cfg->migrationPortMin,
cfg->migrationPortMax)) == NULL)
goto error;
if (qemuSecurityInit(qemu_driver) < 0)
goto error;
if (!(qemu_driver->hostdevMgr = virHostdevManagerGetDefault()))
goto error;
if (!(qemu_driver->sharedDevices = virHashCreate(30, qemuSharedDeviceEntryFree)))
goto error;
if (qemuMigrationDstErrorInit(qemu_driver) < 0)
goto error;
if (privileged) {
char *channeldir;
if (chown(cfg->libDir, cfg->user, cfg->group) < 0) {
virReportSystemError(errno,
_("unable to set ownership of '%s' to user %d:%d"),
cfg->libDir, (int)cfg->user,
(int)cfg->group);
goto error;
}
if (chown(cfg->cacheDir, cfg->user, cfg->group) < 0) {
virReportSystemError(errno,
_("unable to set ownership of '%s' to %d:%d"),
cfg->cacheDir, (int)cfg->user,
(int)cfg->group);
goto error;
}
if (chown(cfg->saveDir, cfg->user, cfg->group) < 0) {
virReportSystemError(errno,
_("unable to set ownership of '%s' to %d:%d"),
cfg->saveDir, (int)cfg->user,
(int)cfg->group);
goto error;
}
if (chown(cfg->snapshotDir, cfg->user, cfg->group) < 0) {
virReportSystemError(errno,
_("unable to set ownership of '%s' to %d:%d"),
cfg->snapshotDir, (int)cfg->user,
(int)cfg->group);
goto error;
}
if (chown(cfg->autoDumpPath, cfg->user, cfg->group) < 0) {
virReportSystemError(errno,
_("unable to set ownership of '%s' to %d:%d"),
cfg->autoDumpPath, (int)cfg->user,
(int)cfg->group);
goto error;
}
if (!(channeldir = mdir_name(cfg->channelTargetDir))) {
virReportOOMError();
goto error;
}
if (chown(channeldir, cfg->user, cfg->group) < 0) {
virReportSystemError(errno,
_("unable to set ownership of '%s' to %d:%d"),
channeldir, (int)cfg->user,
(int)cfg->group);
VIR_FREE(channeldir);
goto error;
}
VIR_FREE(channeldir);
if (chown(cfg->channelTargetDir, cfg->user, cfg->group) < 0) {
virReportSystemError(errno,
_("unable to set ownership of '%s' to %d:%d"),
cfg->channelTargetDir, (int)cfg->user,
(int)cfg->group);
goto error;
}
if (chown(cfg->nvramDir, cfg->user, cfg->group) < 0) {
virReportSystemError(errno,
_("unable to set ownership of '%s' to %d:%d"),
cfg->nvramDir, (int)cfg->user,
(int)cfg->group);
goto error;
}
if (chown(cfg->memoryBackingDir, cfg->user, cfg->group) < 0) {
virReportSystemError(errno,
_("unable to set ownership of '%s' to %d:%d"),
cfg->memoryBackingDir, (int)cfg->user,
(int)cfg->group);
goto error;
}
run_uid = cfg->user;
run_gid = cfg->group;
}
if ((hostCPU = virCPUProbeHost(virArchFromHost())))
microcodeVersion = hostCPU->microcodeVersion;
virCPUDefFree(hostCPU);
qemu_driver->qemuCapsCache = virQEMUCapsCacheNew(cfg->libDir,
cfg->cacheDir,
run_uid,
run_gid,
microcodeVersion);
if (!qemu_driver->qemuCapsCache)
goto error;
if ((qemu_driver->caps = virQEMUDriverCreateCapabilities(qemu_driver)) == NULL)
goto error;
if (!(qemu_driver->xmlopt = virQEMUDriverCreateXMLConf(qemu_driver)))
goto error;
/* If hugetlbfs is present, then we need to create a sub-directory within
* it, since we can't assume the root mount point has permissions that
* will let our spawned QEMU instances use it. */
for (i = 0; i < cfg->nhugetlbfs; i++) {
hugepagePath = qemuGetBaseHugepagePath(&cfg->hugetlbfs[i]);
if (!hugepagePath)
goto error;
if (virFileMakePath(hugepagePath) < 0) {
virReportSystemError(errno,
_("unable to create hugepage path %s"),
hugepagePath);
goto error;
}
if (privileged &&
virFileUpdatePerm(cfg->hugetlbfs[i].mnt_dir,
0, S_IXGRP | S_IXOTH) < 0)
goto error;
VIR_FREE(hugepagePath);
}
if (qemuGetMemoryBackingBasePath(cfg, &memoryBackingPath) < 0)
goto error;
if (virFileMakePath(memoryBackingPath) < 0) {
virReportSystemError(errno,
_("unable to create memory backing path %s"),
memoryBackingPath);
goto error;
}
if (privileged &&
virFileUpdatePerm(memoryBackingPath,
0, S_IXGRP | S_IXOTH) < 0)
goto error;
VIR_FREE(memoryBackingPath);
if (!(qemu_driver->closeCallbacks = virCloseCallbacksNew()))
goto error;
/* Get all the running persistent or transient configs first */
if (virDomainObjListLoadAllConfigs(qemu_driver->domains,
cfg->stateDir,
NULL, true,
qemu_driver->caps,
qemu_driver->xmlopt,
NULL, NULL) < 0)
goto error;
/* find the maximum ID from active and transient configs to initialize
* the driver with. This is to avoid race between autostart and reconnect
* threads */
virDomainObjListForEach(qemu_driver->domains,
qemuDomainFindMaxID,
&qemu_driver->lastvmid);
virDomainObjListForEach(qemu_driver->domains,
qemuDomainNetsRestart,
NULL);
/* Then inactive persistent configs */
if (virDomainObjListLoadAllConfigs(qemu_driver->domains,
cfg->configDir,
cfg->autostartDir, false,
qemu_driver->caps,
qemu_driver->xmlopt,
NULL, NULL) < 0)
goto error;
virDomainObjListForEach(qemu_driver->domains,
qemuDomainSnapshotLoad,
cfg->snapshotDir);
virDomainObjListForEach(qemu_driver->domains,
qemuDomainManagedSaveLoad,
qemu_driver);
/* must be initialized before trying to reconnect to all the
* running domains since there might occur some QEMU monitor
* events that will be dispatched to the worker pool */
qemu_driver->workerPool = virThreadPoolNew(0, 1, 0, qemuProcessEventHandler, qemu_driver);
if (!qemu_driver->workerPool)
goto error;
qemuProcessReconnectAll(qemu_driver);
return 0;
error:
VIR_FREE(driverConf);
VIR_FREE(hugepagePath);
VIR_FREE(memoryBackingPath);
qemuStateCleanup();
return -1;
}
/**
* qemuStateAutoStart:
*
* Function to auto start the QEMU daemons
*/
static void
qemuStateAutoStart(void)
{
if (!qemu_driver)
return;
qemuAutostartDomains(qemu_driver);
}
static void qemuNotifyLoadDomain(virDomainObjPtr vm, int newVM, void *opaque)
{
virQEMUDriverPtr driver = opaque;
if (newVM) {
virObjectEventPtr event =
virDomainEventLifecycleNewFromObj(vm,
VIR_DOMAIN_EVENT_DEFINED,
VIR_DOMAIN_EVENT_DEFINED_ADDED);
virObjectEventStateQueue(driver->domainEventState, event);
}
}
/**
* qemuStateReload:
*
* Function to restart the QEMU daemon, it will recheck the configuration
* files and update its state and the networking
*/
static int
qemuStateReload(void)
{
virQEMUDriverConfigPtr cfg = NULL;
virCapsPtr caps = NULL;
if (!qemu_driver)
return 0;
if (!(caps = virQEMUDriverGetCapabilities(qemu_driver, false)))
goto cleanup;
cfg = virQEMUDriverGetConfig(qemu_driver);
virDomainObjListLoadAllConfigs(qemu_driver->domains,
cfg->configDir,
cfg->autostartDir, false,
caps, qemu_driver->xmlopt,
qemuNotifyLoadDomain, qemu_driver);
cleanup:
virObjectUnref(cfg);
virObjectUnref(caps);
return 0;
}
/*
* qemuStateStop:
*
* Save any VMs in preparation for shutdown
*
*/
static int
qemuStateStop(void)
{
int ret = -1;
virConnectPtr conn;
int numDomains = 0;
size_t i;
int state;
virDomainPtr *domains = NULL;
unsigned int *flags = NULL;
virQEMUDriverConfigPtr cfg = virQEMUDriverGetConfig(qemu_driver);
if (!(conn = virConnectOpen(cfg->uri)))
goto cleanup;
if ((numDomains = virConnectListAllDomains(conn,
&domains,
VIR_CONNECT_LIST_DOMAINS_ACTIVE)) < 0)
goto cleanup;
if (VIR_ALLOC_N(flags, numDomains) < 0)
goto cleanup;
/* First we pause all VMs to make them stop dirtying
pages, etc. We remember if any VMs were paused so
we can restore that on resume. */
for (i = 0; i < numDomains; i++) {
flags[i] = VIR_DOMAIN_SAVE_RUNNING;
if (virDomainGetState(domains[i], &state, NULL, 0) == 0) {
if (state == VIR_DOMAIN_PAUSED)
flags[i] = VIR_DOMAIN_SAVE_PAUSED;
}
virDomainSuspend(domains[i]);
}
ret = 0;
/* Then we save the VMs to disk */
for (i = 0; i < numDomains; i++)
if (virDomainManagedSave(domains[i], flags[i]) < 0)
ret = -1;
cleanup:
if (domains) {
for (i = 0; i < numDomains; i++)
virObjectUnref(domains[i]);
VIR_FREE(domains);
}
VIR_FREE(flags);
virObjectUnref(conn);
virObjectUnref(cfg);
return ret;
}
/**
* qemuStateCleanup:
*
* Shutdown the QEMU daemon, it will stop all active domains and networks
*/
static int
qemuStateCleanup(void)
{
if (!qemu_driver)
return -1;
virThreadPoolFree(qemu_driver->workerPool);
virObjectUnref(qemu_driver->config);
virObjectUnref(qemu_driver->hostdevMgr);
virHashFree(qemu_driver->sharedDevices);
virObjectUnref(qemu_driver->caps);
virObjectUnref(qemu_driver->qemuCapsCache);
virObjectUnref(qemu_driver->domains);
virPortAllocatorRangeFree(qemu_driver->remotePorts);
virPortAllocatorRangeFree(qemu_driver->webSocketPorts);
virPortAllocatorRangeFree(qemu_driver->migrationPorts);
virObjectUnref(qemu_driver->migrationErrors);
virObjectUnref(qemu_driver->xmlopt);
virSysinfoDefFree(qemu_driver->hostsysinfo);
virObjectUnref(qemu_driver->closeCallbacks);
VIR_FREE(qemu_driver->qemuImgBinary);
virObjectUnref(qemu_driver->securityManager);
ebtablesContextFree(qemu_driver->ebtables);
/* Free domain callback list */
virObjectUnref(qemu_driver->domainEventState);
virLockManagerPluginUnref(qemu_driver->lockManager);
virMutexDestroy(&qemu_driver->lock);
VIR_FREE(qemu_driver);
return 0;
}
static int
qemuConnectURIProbe(char **uri)
{
virQEMUDriverConfigPtr cfg = NULL;
int ret = -1;
if (qemu_driver == NULL)
return 0;
cfg = virQEMUDriverGetConfig(qemu_driver);
if (VIR_STRDUP(*uri, cfg->uri) < 0)
goto cleanup;
ret = 0;
cleanup:
virObjectUnref(cfg);
return ret;
}
static virDrvOpenStatus qemuConnectOpen(virConnectPtr conn,
virConnectAuthPtr auth ATTRIBUTE_UNUSED,
virConfPtr conf ATTRIBUTE_UNUSED,
unsigned int flags)
{
virQEMUDriverConfigPtr cfg = NULL;
virDrvOpenStatus ret = VIR_DRV_OPEN_ERROR;
virCheckFlags(VIR_CONNECT_RO, VIR_DRV_OPEN_ERROR);
if (qemu_driver == NULL) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("qemu state driver is not active"));
goto cleanup;
}
cfg = virQEMUDriverGetConfig(qemu_driver);
if (virQEMUDriverIsPrivileged(qemu_driver)) {
if (STRNEQ(conn->uri->path, "/system") &&
STRNEQ(conn->uri->path, "/session")) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("unexpected QEMU URI path '%s', try qemu:///system"),
conn->uri->path);
goto cleanup;
}
} else {
if (STRNEQ(conn->uri->path, "/session")) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("unexpected QEMU URI path '%s', try qemu:///session"),
conn->uri->path);
goto cleanup;
}
}
if (virConnectOpenEnsureACL(conn) < 0)
goto cleanup;
conn->privateData = qemu_driver;
ret = VIR_DRV_OPEN_SUCCESS;
cleanup:
virObjectUnref(cfg);
return ret;
}
static int qemuConnectClose(virConnectPtr conn)
{
virQEMUDriverPtr driver = conn->privateData;
/* Get rid of callbacks registered for this conn */
virCloseCallbacksRun(driver->closeCallbacks, conn, driver->domains, driver);
conn->privateData = NULL;
return 0;
}
/* Which features are supported by this driver? */
static int
qemuConnectSupportsFeature(virConnectPtr conn, int feature)
{
if (virConnectSupportsFeatureEnsureACL(conn) < 0)
return -1;
switch ((virDrvFeature) feature) {
case VIR_DRV_FEATURE_MIGRATION_V2:
case VIR_DRV_FEATURE_MIGRATION_V3:
case VIR_DRV_FEATURE_MIGRATION_P2P:
case VIR_DRV_FEATURE_MIGRATE_CHANGE_PROTECTION:
case VIR_DRV_FEATURE_FD_PASSING:
case VIR_DRV_FEATURE_TYPED_PARAM_STRING:
case VIR_DRV_FEATURE_XML_MIGRATABLE:
case VIR_DRV_FEATURE_MIGRATION_OFFLINE:
case VIR_DRV_FEATURE_MIGRATION_PARAMS:
return 1;
case VIR_DRV_FEATURE_MIGRATION_DIRECT:
case VIR_DRV_FEATURE_MIGRATION_V1:
case VIR_DRV_FEATURE_PROGRAM_KEEPALIVE:
case VIR_DRV_FEATURE_REMOTE:
case VIR_DRV_FEATURE_REMOTE_CLOSE_CALLBACK:
case VIR_DRV_FEATURE_REMOTE_EVENT_CALLBACK:
default:
return 0;
}
}
static const char *qemuConnectGetType(virConnectPtr conn) {
if (virConnectGetTypeEnsureACL(conn) < 0)
return NULL;
return "QEMU";
}
static int qemuConnectIsSecure(virConnectPtr conn ATTRIBUTE_UNUSED)
{
/* Trivially secure, since always inside the daemon */
return 1;
}
static int qemuConnectIsEncrypted(virConnectPtr conn ATTRIBUTE_UNUSED)
{
/* Not encrypted, but remote driver takes care of that */
return 0;
}
static int qemuConnectIsAlive(virConnectPtr conn ATTRIBUTE_UNUSED)
{
return 1;
}
static char *
qemuConnectGetSysinfo(virConnectPtr conn, unsigned int flags)
{
virQEMUDriverPtr driver = conn->privateData;
virBuffer buf = VIR_BUFFER_INITIALIZER;
virCheckFlags(0, NULL);
if (virConnectGetSysinfoEnsureACL(conn) < 0)
return NULL;
if (!driver->hostsysinfo) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("Host SMBIOS information is not available"));
return NULL;
}
if (virSysinfoFormat(&buf, driver->hostsysinfo) < 0)
return NULL;
if (virBufferCheckError(&buf) < 0)
return NULL;
return virBufferContentAndReset(&buf);
}
static int
qemuConnectGetMaxVcpus(virConnectPtr conn ATTRIBUTE_UNUSED, const char *type)
{
if (virConnectGetMaxVcpusEnsureACL(conn) < 0)
return -1;
if (!type)
return 16;
if (STRCASEEQ(type, "qemu"))
return 16;
if (STRCASEEQ(type, "kvm"))
return virHostCPUGetKVMMaxVCPUs();
if (STRCASEEQ(type, "kqemu"))
return 1;
virReportError(VIR_ERR_INVALID_ARG,
_("unknown type '%s'"), type);
return -1;
}
static char *qemuConnectGetCapabilities(virConnectPtr conn) {
virQEMUDriverPtr driver = conn->privateData;
virCapsPtr caps = NULL;
char *xml = NULL;
if (virConnectGetCapabilitiesEnsureACL(conn) < 0)
return NULL;
if (!(caps = virQEMUDriverGetCapabilities(driver, true)))
goto cleanup;
xml = virCapabilitiesFormatXML(caps);
virObjectUnref(caps);
cleanup:
return xml;
}
static int
qemuGetSchedInfo(unsigned long long *cpuWait,
pid_t pid, pid_t tid)
{
char *proc = NULL;
char *data = NULL;
char **lines = NULL;
size_t i;
int ret = -1;
double val;
*cpuWait = 0;
/* In general, we cannot assume pid_t fits in int; but /proc parsing
* is specific to Linux where int works fine. */
if (tid)
ret = virAsprintf(&proc, "/proc/%d/task/%d/sched", (int)pid, (int)tid);
else
ret = virAsprintf(&proc, "/proc/%d/sched", (int)pid);
if (ret < 0)
goto cleanup;
ret = -1;
/* The file is not guaranteed to exist (needs CONFIG_SCHED_DEBUG) */
if (access(proc, R_OK) < 0) {
ret = 0;
goto cleanup;
}
if (virFileReadAll(proc, (1<<16), &data) < 0)
goto cleanup;
lines = virStringSplit(data, "\n", 0);
if (!lines)
goto cleanup;
for (i = 0; lines[i] != NULL; i++) {
const char *line = lines[i];
/* Needs CONFIG_SCHEDSTATS. The second check
* is the old name the kernel used in past */
if (STRPREFIX(line, "se.statistics.wait_sum") ||
STRPREFIX(line, "se.wait_sum")) {
line = strchr(line, ':');
if (!line) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("Missing separator in sched info '%s'"),
lines[i]);
goto cleanup;
}
line++;
while (*line == ' ')
line++;
if (virStrToDouble(line, NULL, &val) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("Unable to parse sched info value '%s'"),
line);
goto cleanup;
}
*cpuWait = (unsigned long long)(val * 1000000);
break;
}
}
ret = 0;
cleanup:
VIR_FREE(data);
VIR_FREE(proc);
virStringListFree(lines);
return ret;
}
static int
qemuGetProcessInfo(unsigned long long *cpuTime, int *lastCpu, long *vm_rss,
pid_t pid, int tid)
{
char *proc;
FILE *pidinfo;
unsigned long long usertime = 0, systime = 0;
long rss = 0;
int cpu = 0;
int ret;
/* In general, we cannot assume pid_t fits in int; but /proc parsing
* is specific to Linux where int works fine. */
if (tid)
ret = virAsprintf(&proc, "/proc/%d/task/%d/stat", (int)pid, tid);
else
ret = virAsprintf(&proc, "/proc/%d/stat", (int)pid);
if (ret < 0)
return -1;
pidinfo = fopen(proc, "r");
VIR_FREE(proc);
/* See 'man proc' for information about what all these fields are. We're
* only interested in a very few of them */
if (!pidinfo ||
fscanf(pidinfo,
/* pid -> stime */
"%*d (%*[^)]) %*c %*d %*d %*d %*d %*d %*u %*u %*u %*u %*u %llu %llu"
/* cutime -> endcode */
"%*d %*d %*d %*d %*d %*d %*u %*u %ld %*u %*u %*u"
/* startstack -> processor */
"%*u %*u %*u %*u %*u %*u %*u %*u %*u %*u %*d %d",
&usertime, &systime, &rss, &cpu) != 4) {
VIR_WARN("cannot parse process status data");
}
/* We got jiffies
* We want nanoseconds
* _SC_CLK_TCK is jiffies per second
* So calculate thus....
*/
if (cpuTime)
*cpuTime = 1000ull * 1000ull * 1000ull * (usertime + systime)
/ (unsigned long long)sysconf(_SC_CLK_TCK);
if (lastCpu)
*lastCpu = cpu;
if (vm_rss)
*vm_rss = rss * virGetSystemPageSizeKB();
VIR_DEBUG("Got status for %d/%d user=%llu sys=%llu cpu=%d rss=%ld",
(int)pid, tid, usertime, systime, cpu, rss);
VIR_FORCE_FCLOSE(pidinfo);
return 0;
}
static int
qemuDomainHelperGetVcpus(virDomainObjPtr vm,
virVcpuInfoPtr info,
unsigned long long *cpuwait,
int maxinfo,
unsigned char *cpumaps,
int maplen)
{
size_t ncpuinfo = 0;
size_t i;
if (maxinfo == 0)
return 0;
if (!qemuDomainHasVcpuPids(vm)) {
virReportError(VIR_ERR_OPERATION_INVALID,
"%s", _("cpu affinity is not supported"));
return -1;
}
if (info)
memset(info, 0, sizeof(*info) * maxinfo);
if (cpumaps)
memset(cpumaps, 0, sizeof(*cpumaps) * maxinfo);
for (i = 0; i < virDomainDefGetVcpusMax(vm->def) && ncpuinfo < maxinfo; i++) {
virDomainVcpuDefPtr vcpu = virDomainDefGetVcpu(vm->def, i);
pid_t vcpupid = qemuDomainGetVcpuPid(vm, i);
virVcpuInfoPtr vcpuinfo = info + ncpuinfo;
if (!vcpu->online)
continue;
if (info) {
vcpuinfo->number = i;
vcpuinfo->state = VIR_VCPU_RUNNING;
if (qemuGetProcessInfo(&vcpuinfo->cpuTime,
&vcpuinfo->cpu, NULL,
vm->pid, vcpupid) < 0) {
virReportSystemError(errno, "%s",
_("cannot get vCPU placement & pCPU time"));
return -1;
}
}
if (cpumaps) {
unsigned char *cpumap = VIR_GET_CPUMAP(cpumaps, maplen, ncpuinfo);
virBitmapPtr map = NULL;
if (!(map = virProcessGetAffinity(vcpupid)))
return -1;
virBitmapToDataBuf(map, cpumap, maplen);
virBitmapFree(map);
}
if (cpuwait) {
if (qemuGetSchedInfo(&(cpuwait[ncpuinfo]), vm->pid, vcpupid) < 0)
return -1;
}
ncpuinfo++;
}
return ncpuinfo;
}
static virDomainPtr qemuDomainLookupByID(virConnectPtr conn,
int id)
{
virQEMUDriverPtr driver = conn->privateData;
virDomainObjPtr vm;
virDomainPtr dom = NULL;
vm = virDomainObjListFindByID(driver->domains, id);
if (!vm) {
virReportError(VIR_ERR_NO_DOMAIN,
_("no domain with matching id %d"), id);
goto cleanup;
}
if (virDomainLookupByIDEnsureACL(conn, vm->def) < 0)
goto cleanup;
dom = virGetDomain(conn, vm->def->name, vm->def->uuid, vm->def->id);
cleanup:
virDomainObjEndAPI(&vm);
return dom;
}
static virDomainPtr qemuDomainLookupByUUID(virConnectPtr conn,
const unsigned char *uuid)
{
virQEMUDriverPtr driver = conn->privateData;
virDomainObjPtr vm;
virDomainPtr dom = NULL;
vm = virDomainObjListFindByUUID(driver->domains, uuid);
if (!vm) {
char uuidstr[VIR_UUID_STRING_BUFLEN];
virUUIDFormat(uuid, uuidstr);
virReportError(VIR_ERR_NO_DOMAIN,
_("no domain with matching uuid '%s'"), uuidstr);
goto cleanup;
}
if (virDomainLookupByUUIDEnsureACL(conn, vm->def) < 0)
goto cleanup;
dom = virGetDomain(conn, vm->def->name, vm->def->uuid, vm->def->id);
cleanup:
virDomainObjEndAPI(&vm);
return dom;
}
static virDomainPtr qemuDomainLookupByName(virConnectPtr conn,
const char *name)
{
virQEMUDriverPtr driver = conn->privateData;
virDomainObjPtr vm;
virDomainPtr dom = NULL;
vm = virDomainObjListFindByName(driver->domains, name);
if (!vm) {
virReportError(VIR_ERR_NO_DOMAIN,
_("no domain with matching name '%s'"), name);
goto cleanup;
}
if (virDomainLookupByNameEnsureACL(conn, vm->def) < 0)
goto cleanup;
dom = virGetDomain(conn, vm->def->name, vm->def->uuid, vm->def->id);
cleanup:
virDomainObjEndAPI(&vm);
return dom;
}
static int qemuDomainIsActive(virDomainPtr dom)
{
virDomainObjPtr obj;
int ret = -1;
if (!(obj = qemuDomObjFromDomain(dom)))
goto cleanup;
if (virDomainIsActiveEnsureACL(dom->conn, obj->def) < 0)
goto cleanup;
ret = virDomainObjIsActive(obj);
cleanup:
virDomainObjEndAPI(&obj);
return ret;
}
static int qemuDomainIsPersistent(virDomainPtr dom)
{
virDomainObjPtr obj;
int ret = -1;
if (!(obj = qemuDomObjFromDomain(dom)))
goto cleanup;
if (virDomainIsPersistentEnsureACL(dom->conn, obj->def) < 0)
goto cleanup;
ret = obj->persistent;
cleanup:
virDomainObjEndAPI(&obj);
return ret;
}
static int qemuDomainIsUpdated(virDomainPtr dom)
{
virDomainObjPtr obj;
int ret = -1;
if (!(obj = qemuDomObjFromDomain(dom)))
goto cleanup;
if (virDomainIsUpdatedEnsureACL(dom->conn, obj->def) < 0)
goto cleanup;
ret = obj->updated;
cleanup:
virDomainObjEndAPI(&obj);
return ret;
}
static int qemuConnectGetVersion(virConnectPtr conn, unsigned long *version)
{
virQEMUDriverPtr driver = conn->privateData;
int ret = -1;
unsigned int qemuVersion = 0;
virCapsPtr caps = NULL;
if (virConnectGetVersionEnsureACL(conn) < 0)
return -1;
if (!(caps = virQEMUDriverGetCapabilities(driver, false)))
goto cleanup;
if (virQEMUCapsGetDefaultVersion(caps,
driver->qemuCapsCache,
&qemuVersion) < 0)
goto cleanup;
*version = qemuVersion;
ret = 0;
cleanup:
virObjectUnref(caps);
return ret;
}
static char *qemuConnectGetHostname(virConnectPtr conn)
{
if (virConnectGetHostnameEnsureACL(conn) < 0)
return NULL;
return virGetHostname();
}
static int qemuConnectListDomains(virConnectPtr conn, int *ids, int nids)
{
virQEMUDriverPtr driver = conn->privateData;
int n;
if (virConnectListDomainsEnsureACL(conn) < 0)
return -1;
n = virDomainObjListGetActiveIDs(driver->domains, ids, nids,
virConnectListDomainsCheckACL, conn);
return n;
}
static int qemuConnectNumOfDomains(virConnectPtr conn)
{
virQEMUDriverPtr driver = conn->privateData;
int n;
if (virConnectNumOfDomainsEnsureACL(conn) < 0)
return -1;
n = virDomainObjListNumOfDomains(driver->domains, true,
virConnectNumOfDomainsCheckACL, conn);
return n;
}
static virDomainPtr qemuDomainCreateXML(virConnectPtr conn,
const char *xml,
unsigned int flags)
{
virQEMUDriverPtr driver = conn->privateData;
virDomainDefPtr def = NULL;
virDomainObjPtr vm = NULL;
virDomainPtr dom = NULL;
virObjectEventPtr event = NULL;
virObjectEventPtr event2 = NULL;
unsigned int start_flags = VIR_QEMU_PROCESS_START_COLD;
virCapsPtr caps = NULL;
unsigned int parse_flags = VIR_DOMAIN_DEF_PARSE_INACTIVE |
VIR_DOMAIN_DEF_PARSE_ABI_UPDATE;
virCheckFlags(VIR_DOMAIN_START_PAUSED |
VIR_DOMAIN_START_AUTODESTROY |
VIR_DOMAIN_START_VALIDATE, NULL);
if (flags & VIR_DOMAIN_START_VALIDATE)
parse_flags |= VIR_DOMAIN_DEF_PARSE_VALIDATE_SCHEMA;
if (flags & VIR_DOMAIN_START_PAUSED)
start_flags |= VIR_QEMU_PROCESS_START_PAUSED;
if (flags & VIR_DOMAIN_START_AUTODESTROY)
start_flags |= VIR_QEMU_PROCESS_START_AUTODESTROY;
virNWFilterReadLockFilterUpdates();
if (!(caps = virQEMUDriverGetCapabilities(driver, false)))
goto cleanup;
if (!(def = virDomainDefParseString(xml, caps, driver->xmlopt,
NULL, parse_flags)))
goto cleanup;
if (virDomainCreateXMLEnsureACL(conn, def) < 0)
goto cleanup;
if (!(vm = virDomainObjListAdd(driver->domains, def,
driver->xmlopt,
VIR_DOMAIN_OBJ_LIST_ADD_LIVE |
VIR_DOMAIN_OBJ_LIST_ADD_CHECK_LIVE,
NULL)))
goto cleanup;
def = NULL;
if (qemuProcessBeginJob(driver, vm, VIR_DOMAIN_JOB_OPERATION_START,
flags) < 0) {
qemuDomainRemoveInactiveJob(driver, vm);
goto cleanup;
}
if (qemuProcessStart(conn, driver, vm, NULL, QEMU_ASYNC_JOB_START,
NULL, -1, NULL, NULL,
VIR_NETDEV_VPORT_PROFILE_OP_CREATE,
start_flags) < 0) {
virDomainAuditStart(vm, "booted", false);
qemuDomainRemoveInactive(driver, vm);
qemuProcessEndJob(driver, vm);
goto cleanup;
}
event = virDomainEventLifecycleNewFromObj(vm,
VIR_DOMAIN_EVENT_STARTED,
VIR_DOMAIN_EVENT_STARTED_BOOTED);
if (event && (flags & VIR_DOMAIN_START_PAUSED)) {
/* There are two classes of event-watching clients - those
* that only care about on/off (and must see a started event
* no matter what, but don't care about suspend events), and
* those that also care about running/paused. To satisfy both
* client types, we have to send two events. */
event2 = virDomainEventLifecycleNewFromObj(vm,
VIR_DOMAIN_EVENT_SUSPENDED,
VIR_DOMAIN_EVENT_SUSPENDED_PAUSED);
}
virDomainAuditStart(vm, "booted", true);
dom = virGetDomain(conn, vm->def->name, vm->def->uuid, vm->def->id);
qemuProcessEndJob(driver, vm);
cleanup:
virDomainDefFree(def);
virDomainObjEndAPI(&vm);
virObjectEventStateQueue(driver->domainEventState, event);
virObjectEventStateQueue(driver->domainEventState, event2);
virObjectUnref(caps);
virNWFilterUnlockFilterUpdates();
return dom;
}
static int qemuDomainSuspend(virDomainPtr dom)
{
virQEMUDriverPtr driver = dom->conn->privateData;
virDomainObjPtr vm;
int ret = -1;
virObjectEventPtr event = NULL;
qemuDomainObjPrivatePtr priv;
virDomainPausedReason reason;
int eventDetail;
int state;
virQEMUDriverConfigPtr cfg = NULL;
if (!(vm = qemuDomObjFromDomain(dom)))
return -1;
if (virDomainSuspendEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
cfg = virQEMUDriverGetConfig(driver);
priv = vm->privateData;
if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_SUSPEND) < 0)
goto cleanup;
if (virDomainObjCheckActive(vm) < 0)
goto endjob;
if (priv->job.asyncJob == QEMU_ASYNC_JOB_MIGRATION_OUT) {
reason = VIR_DOMAIN_PAUSED_MIGRATION;
eventDetail = VIR_DOMAIN_EVENT_SUSPENDED_MIGRATED;
} else if (priv->job.asyncJob == QEMU_ASYNC_JOB_SNAPSHOT) {
reason = VIR_DOMAIN_PAUSED_SNAPSHOT;
eventDetail = -1; /* don't create lifecycle events when doing snapshot */
} else {
reason = VIR_DOMAIN_PAUSED_USER;
eventDetail = VIR_DOMAIN_EVENT_SUSPENDED_PAUSED;
}
state = virDomainObjGetState(vm, NULL);
if (state == VIR_DOMAIN_PMSUSPENDED) {
virReportError(VIR_ERR_OPERATION_INVALID,
"%s", _("domain is pmsuspended"));
goto endjob;
} else if (state != VIR_DOMAIN_PAUSED) {
if (qemuProcessStopCPUs(driver, vm, reason, QEMU_ASYNC_JOB_NONE) < 0)
goto endjob;
if (eventDetail >= 0) {
event = virDomainEventLifecycleNewFromObj(vm,
VIR_DOMAIN_EVENT_SUSPENDED,
eventDetail);
}
}
if (virDomainSaveStatus(driver->xmlopt, cfg->stateDir, vm, driver->caps) < 0)
goto endjob;
ret = 0;
endjob:
qemuDomainObjEndJob(driver, vm);
cleanup:
virDomainObjEndAPI(&vm);
virObjectEventStateQueue(driver->domainEventState, event);
virObjectUnref(cfg);
return ret;
}
static int qemuDomainResume(virDomainPtr dom)
{
virQEMUDriverPtr driver = dom->conn->privateData;
virDomainObjPtr vm;
int ret = -1;
int state;
int reason;
virQEMUDriverConfigPtr cfg = NULL;
if (!(vm = qemuDomObjFromDomain(dom)))
return -1;
cfg = virQEMUDriverGetConfig(driver);
if (virDomainResumeEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_MODIFY) < 0)
goto cleanup;
if (virDomainObjCheckActive(vm) < 0)
goto endjob;
state = virDomainObjGetState(vm, &reason);
if (state == VIR_DOMAIN_PMSUSPENDED) {
virReportError(VIR_ERR_OPERATION_INVALID,
"%s", _("domain is pmsuspended"));
goto endjob;
} else if (state == VIR_DOMAIN_RUNNING) {
virReportError(VIR_ERR_OPERATION_INVALID,
"%s", _("domain is already running"));
goto endjob;
} else if ((state == VIR_DOMAIN_CRASHED &&
reason == VIR_DOMAIN_CRASHED_PANICKED) ||
state == VIR_DOMAIN_PAUSED) {
if (qemuProcessStartCPUs(driver, vm,
VIR_DOMAIN_RUNNING_UNPAUSED,
QEMU_ASYNC_JOB_NONE) < 0) {
if (virGetLastErrorCode() == VIR_ERR_OK)
virReportError(VIR_ERR_OPERATION_FAILED,
"%s", _("resume operation failed"));
goto endjob;
}
}
if (virDomainSaveStatus(driver->xmlopt, cfg->stateDir, vm, driver->caps) < 0)
goto endjob;
ret = 0;
endjob:
qemuDomainObjEndJob(driver, vm);
cleanup:
virDomainObjEndAPI(&vm);
virObjectUnref(cfg);
return ret;
}
static int qemuDomainShutdownFlags(virDomainPtr dom, unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
virDomainObjPtr vm;
int ret = -1;
qemuDomainObjPrivatePtr priv;
bool useAgent = false, agentRequested, acpiRequested;
bool isReboot = false;
bool agentForced;
qemuDomainAgentJob agentJob = QEMU_AGENT_JOB_NONE;
int agentFlag = QEMU_AGENT_SHUTDOWN_POWERDOWN;
virCheckFlags(VIR_DOMAIN_SHUTDOWN_ACPI_POWER_BTN |
VIR_DOMAIN_SHUTDOWN_GUEST_AGENT, -1);
if (!(vm = qemuDomObjFromDomain(dom)))
goto cleanup;
if (vm->def->onPoweroff == VIR_DOMAIN_LIFECYCLE_ACTION_RESTART ||
vm->def->onPoweroff == VIR_DOMAIN_LIFECYCLE_ACTION_RESTART_RENAME) {
isReboot = true;
agentFlag = QEMU_AGENT_SHUTDOWN_REBOOT;
VIR_INFO("Domain on_poweroff setting overridden, attempting reboot");
}
priv = vm->privateData;
agentRequested = flags & VIR_DOMAIN_SHUTDOWN_GUEST_AGENT;
acpiRequested = flags & VIR_DOMAIN_SHUTDOWN_ACPI_POWER_BTN;
/* Prefer agent unless we were requested to not to. */
if (agentRequested || (!flags && priv->agent))
useAgent = true;
if (virDomainShutdownFlagsEnsureACL(dom->conn, vm->def, flags) < 0)
goto cleanup;
if (useAgent)
agentJob = QEMU_AGENT_JOB_MODIFY;
if (qemuDomainObjBeginJobWithAgent(driver, vm,
QEMU_JOB_MODIFY,
agentJob) < 0)
goto cleanup;
if (virDomainObjGetState(vm, NULL) != VIR_DOMAIN_RUNNING) {
virReportError(VIR_ERR_OPERATION_INVALID,
"%s", _("domain is not running"));
goto endjob;
}
agentForced = agentRequested && !acpiRequested;
if (!qemuDomainAgentAvailable(vm, agentForced)) {
if (agentForced)
goto endjob;
useAgent = false;
}
if (useAgent) {
qemuAgentPtr agent;
qemuDomainSetFakeReboot(driver, vm, false);
agent = qemuDomainObjEnterAgent(vm);
ret = qemuAgentShutdown(agent, agentFlag);
qemuDomainObjExitAgent(vm, agent);
}
/* If we are not enforced to use just an agent, try ACPI
* shutdown as well in case agent did not succeed.
*/
if (!useAgent ||
(ret < 0 && (acpiRequested || !flags))) {
/* Even if agent failed, we have to check if guest went away
* by itself while our locks were down. */
if (useAgent && !virDomainObjIsActive(vm)) {
ret = 0;
goto endjob;
}
qemuDomainSetFakeReboot(driver, vm, isReboot);
qemuDomainObjEnterMonitor(driver, vm);
ret = qemuMonitorSystemPowerdown(priv->mon);
if (qemuDomainObjExitMonitor(driver, vm) < 0)
ret = -1;
}
endjob:
if (agentJob)
qemuDomainObjEndJobWithAgent(driver, vm);
else
qemuDomainObjEndJob(driver, vm);
cleanup:
virDomainObjEndAPI(&vm);
return ret;
}
static int qemuDomainShutdown(virDomainPtr dom)
{
return qemuDomainShutdownFlags(dom, 0);
}
static int
qemuDomainReboot(virDomainPtr dom, unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
virDomainObjPtr vm;
int ret = -1;
qemuDomainObjPrivatePtr priv;
bool useAgent = false, agentRequested, acpiRequested;
bool isReboot = true;
bool agentForced;
qemuDomainAgentJob agentJob = QEMU_AGENT_JOB_NONE;
int agentFlag = QEMU_AGENT_SHUTDOWN_REBOOT;
virCheckFlags(VIR_DOMAIN_REBOOT_ACPI_POWER_BTN |
VIR_DOMAIN_REBOOT_GUEST_AGENT, -1);
if (!(vm = qemuDomObjFromDomain(dom)))
goto cleanup;
if (vm->def->onReboot == VIR_DOMAIN_LIFECYCLE_ACTION_DESTROY ||
vm->def->onReboot == VIR_DOMAIN_LIFECYCLE_ACTION_PRESERVE) {
agentFlag = QEMU_AGENT_SHUTDOWN_POWERDOWN;
isReboot = false;
VIR_INFO("Domain on_reboot setting overridden, shutting down");
}
priv = vm->privateData;
agentRequested = flags & VIR_DOMAIN_REBOOT_GUEST_AGENT;
acpiRequested = flags & VIR_DOMAIN_REBOOT_ACPI_POWER_BTN;
/* Prefer agent unless we were requested to not to. */
if (agentRequested || (!flags && priv->agent))
useAgent = true;
if (virDomainRebootEnsureACL(dom->conn, vm->def, flags) < 0)
goto cleanup;
if (useAgent)
agentJob = QEMU_AGENT_JOB_MODIFY;
if (qemuDomainObjBeginJobWithAgent(driver, vm,
QEMU_JOB_MODIFY,
agentJob) < 0)
goto cleanup;
agentForced = agentRequested && !acpiRequested;
if (!qemuDomainAgentAvailable(vm, agentForced)) {
if (agentForced)
goto endjob;
useAgent = false;
}
if (virDomainObjCheckActive(vm) < 0)
goto endjob;
if (useAgent) {
qemuAgentPtr agent;
qemuDomainSetFakeReboot(driver, vm, false);
agent = qemuDomainObjEnterAgent(vm);
ret = qemuAgentShutdown(agent, agentFlag);
qemuDomainObjExitAgent(vm, agent);
}
/* If we are not enforced to use just an agent, try ACPI
* shutdown as well in case agent did not succeed.
*/
if ((!useAgent) ||
(ret < 0 && (acpiRequested || !flags))) {
#if !WITH_YAJL
virReportError(VIR_ERR_OPERATION_INVALID, "%s",
_("ACPI reboot is not supported without the JSON monitor"));
goto endjob;
#endif
qemuDomainSetFakeReboot(driver, vm, isReboot);
qemuDomainObjEnterMonitor(driver, vm);
ret = qemuMonitorSystemPowerdown(priv->mon);
if (qemuDomainObjExitMonitor(driver, vm) < 0)
ret = -1;
}
endjob:
if (agentJob)
qemuDomainObjEndJobWithAgent(driver, vm);
else
qemuDomainObjEndJob(driver, vm);
cleanup:
virDomainObjEndAPI(&vm);
return ret;
}
static int
qemuDomainReset(virDomainPtr dom, unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
virDomainObjPtr vm;
int ret = -1;
qemuDomainObjPrivatePtr priv;
virDomainState state;
virCheckFlags(0, -1);
if (!(vm = qemuDomObjFromDomain(dom)))
goto cleanup;
if (virDomainResetEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_MODIFY) < 0)
goto cleanup;
if (virDomainObjCheckActive(vm) < 0)
goto endjob;
priv = vm->privateData;
qemuDomainObjEnterMonitor(driver, vm);
ret = qemuMonitorSystemReset(priv->mon);
if (qemuDomainObjExitMonitor(driver, vm) < 0)
ret = -1;
priv->fakeReboot = false;
state = virDomainObjGetState(vm, NULL);
if (state == VIR_DOMAIN_CRASHED)
virDomainObjSetState(vm, VIR_DOMAIN_PAUSED, VIR_DOMAIN_PAUSED_CRASHED);
endjob:
qemuDomainObjEndJob(driver, vm);
cleanup:
virDomainObjEndAPI(&vm);
return ret;
}
/* Count how many snapshots in a set are external snapshots or checkpoints. */
static int
qemuDomainSnapshotCountExternal(void *payload,
const void *name ATTRIBUTE_UNUSED,
void *data)
{
virDomainSnapshotObjPtr snap = payload;
int *count = data;
if (virDomainSnapshotIsExternal(snap))
(*count)++;
return 0;
}
static int
qemuDomainDestroyFlags(virDomainPtr dom,
unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
virDomainObjPtr vm;
int ret = -1;
virObjectEventPtr event = NULL;
qemuDomainObjPrivatePtr priv;
unsigned int stopFlags = 0;
int state;
int reason;
bool starting;
virCheckFlags(VIR_DOMAIN_DESTROY_GRACEFUL, -1);
if (!(vm = qemuDomObjFromDomain(dom)))
return -1;
priv = vm->privateData;
if (virDomainDestroyFlagsEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
if (virDomainObjCheckActive(vm) < 0)
goto cleanup;
state = virDomainObjGetState(vm, &reason);
starting = (state == VIR_DOMAIN_PAUSED &&
reason == VIR_DOMAIN_PAUSED_STARTING_UP &&
!priv->beingDestroyed);
if (qemuProcessBeginStopJob(driver, vm, QEMU_JOB_DESTROY,
!(flags & VIR_DOMAIN_DESTROY_GRACEFUL)) < 0)
goto cleanup;
if (!virDomainObjIsActive(vm)) {
if (starting) {
VIR_DEBUG("Domain %s is not running anymore", vm->def->name);
ret = 0;
} else {
virReportError(VIR_ERR_OPERATION_INVALID,
"%s", _("domain is not running"));
}
goto endjob;
}
qemuDomainSetFakeReboot(driver, vm, false);
if (priv->job.asyncJob == QEMU_ASYNC_JOB_MIGRATION_IN)
stopFlags |= VIR_QEMU_PROCESS_STOP_MIGRATED;
qemuProcessStop(driver, vm, VIR_DOMAIN_SHUTOFF_DESTROYED,
QEMU_ASYNC_JOB_NONE, stopFlags);
event = virDomainEventLifecycleNewFromObj(vm,
VIR_DOMAIN_EVENT_STOPPED,
VIR_DOMAIN_EVENT_STOPPED_DESTROYED);
virDomainAuditStop(vm, "destroyed");
ret = 0;
endjob:
if (ret == 0)
qemuDomainRemoveInactive(driver, vm);
qemuDomainObjEndJob(driver, vm);
cleanup:
virDomainObjEndAPI(&vm);
virObjectEventStateQueue(driver->domainEventState, event);
return ret;
}
static int
qemuDomainDestroy(virDomainPtr dom)
{
return qemuDomainDestroyFlags(dom, 0);
}
static char *qemuDomainGetOSType(virDomainPtr dom) {
virDomainObjPtr vm;
char *type = NULL;
if (!(vm = qemuDomObjFromDomain(dom)))
goto cleanup;
if (virDomainGetOSTypeEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
ignore_value(VIR_STRDUP(type, virDomainOSTypeToString(vm->def->os.type)));
cleanup:
virDomainObjEndAPI(&vm);
return type;
}
/* Returns max memory in kb, 0 if error */
static unsigned long long
qemuDomainGetMaxMemory(virDomainPtr dom)
{
virDomainObjPtr vm;
unsigned long long ret = 0;
if (!(vm = qemuDomObjFromDomain(dom)))
goto cleanup;
if (virDomainGetMaxMemoryEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
ret = virDomainDefGetMemoryTotal(vm->def);
cleanup:
virDomainObjEndAPI(&vm);
return ret;
}
static int qemuDomainSetMemoryFlags(virDomainPtr dom, unsigned long newmem,
unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
qemuDomainObjPrivatePtr priv;
virDomainObjPtr vm;
virDomainDefPtr def;
virDomainDefPtr persistentDef;
int ret = -1, r;
virQEMUDriverConfigPtr cfg = NULL;
virCheckFlags(VIR_DOMAIN_AFFECT_LIVE |
VIR_DOMAIN_AFFECT_CONFIG |
VIR_DOMAIN_MEM_MAXIMUM, -1);
if (!(vm = qemuDomObjFromDomain(dom)))
goto cleanup;
cfg = virQEMUDriverGetConfig(driver);
if (virDomainSetMemoryFlagsEnsureACL(dom->conn, vm->def, flags) < 0)
goto cleanup;
if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_MODIFY) < 0)
goto cleanup;
if (virDomainObjGetDefs(vm, flags, &def, &persistentDef) < 0)
goto endjob;
if (flags & VIR_DOMAIN_MEM_MAXIMUM) {
/* resize the maximum memory */
if (def) {
virReportError(VIR_ERR_OPERATION_INVALID, "%s",
_("cannot resize the maximum memory on an "
"active domain"));
goto endjob;
}
if (persistentDef) {
/* resizing memory with NUMA nodes specified doesn't work as there
* is no way to change the individual node sizes with this API */
if (virDomainNumaGetNodeCount(persistentDef->numa) > 0) {
virReportError(VIR_ERR_OPERATION_INVALID, "%s",
_("initial memory size of a domain with NUMA "
"nodes cannot be modified with this API"));
goto endjob;
}
if (persistentDef->mem.max_memory &&
persistentDef->mem.max_memory < newmem) {
virReportError(VIR_ERR_OPERATION_INVALID, "%s",
_("cannot set initial memory size greater than "
"the maximum memory size"));
goto endjob;
}
virDomainDefSetMemoryTotal(persistentDef, newmem);
if (persistentDef->mem.cur_balloon > newmem)
persistentDef->mem.cur_balloon = newmem;
ret = virDomainSaveConfig(cfg->configDir, driver->caps,
persistentDef);
goto endjob;
}
} else {
/* resize the current memory */
unsigned long oldmax = 0;
if (def)
oldmax = virDomainDefGetMemoryTotal(def);
if (persistentDef) {
if (!oldmax || oldmax > virDomainDefGetMemoryTotal(persistentDef))
oldmax = virDomainDefGetMemoryTotal(persistentDef);
}
if (newmem > oldmax) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("cannot set memory higher than max memory"));
goto endjob;
}
if (def) {
priv = vm->privateData;
qemuDomainObjEnterMonitor(driver, vm);
r = qemuMonitorSetBalloon(priv->mon, newmem);
if (qemuDomainObjExitMonitor(driver, vm) < 0 || r < 0)
goto endjob;
/* Lack of balloon support is a fatal error */
if (r == 0) {
virReportError(VIR_ERR_OPERATION_INVALID, "%s",
_("Unable to change memory of active domain without "
"the balloon device and guest OS balloon driver"));
goto endjob;
}
}
if (persistentDef) {
persistentDef->mem.cur_balloon = newmem;
ret = virDomainSaveConfig(cfg->configDir, driver->caps,
persistentDef);
goto endjob;
}
}
ret = 0;
endjob:
qemuDomainObjEndJob(driver, vm);
cleanup:
virDomainObjEndAPI(&vm);
virObjectUnref(cfg);
return ret;
}
static int qemuDomainSetMemory(virDomainPtr dom, unsigned long newmem)
{
return qemuDomainSetMemoryFlags(dom, newmem, VIR_DOMAIN_AFFECT_LIVE);
}
static int qemuDomainSetMaxMemory(virDomainPtr dom, unsigned long memory)
{
return qemuDomainSetMemoryFlags(dom, memory, VIR_DOMAIN_MEM_MAXIMUM);
}
static int qemuDomainSetMemoryStatsPeriod(virDomainPtr dom, int period,
unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
qemuDomainObjPrivatePtr priv;
virDomainObjPtr vm;
virDomainDefPtr def;
virDomainDefPtr persistentDef;
int ret = -1, r;
virQEMUDriverConfigPtr cfg = NULL;
virCheckFlags(VIR_DOMAIN_AFFECT_LIVE |
VIR_DOMAIN_AFFECT_CONFIG, -1);
if (!(vm = qemuDomObjFromDomain(dom)))
goto cleanup;
cfg = virQEMUDriverGetConfig(driver);
if (virDomainSetMemoryStatsPeriodEnsureACL(dom->conn, vm->def, flags) < 0)
goto cleanup;
if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_MODIFY) < 0)
goto cleanup;
if (virDomainObjGetDefs(vm, flags, &def, &persistentDef) < 0)
goto endjob;
/* Set the balloon driver collection interval */
priv = vm->privateData;
if (def) {
if (!def->memballoon ||
def->memballoon->model != VIR_DOMAIN_MEMBALLOON_MODEL_VIRTIO) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Memory balloon model must be virtio to set the"
" collection period"));
goto endjob;
}
qemuDomainObjEnterMonitor(driver, vm);
r = qemuMonitorSetMemoryStatsPeriod(priv->mon, def->memballoon, period);
if (qemuDomainObjExitMonitor(driver, vm) < 0)
goto endjob;
if (r < 0) {
virReportError(VIR_ERR_OPERATION_INVALID, "%s",
_("unable to set balloon driver collection period"));
goto endjob;
}
def->memballoon->period = period;
if (virDomainSaveStatus(driver->xmlopt, cfg->stateDir, vm, driver->caps) < 0)
goto endjob;
}
if (persistentDef) {
if (!persistentDef->memballoon ||
persistentDef->memballoon->model != VIR_DOMAIN_MEMBALLOON_MODEL_VIRTIO) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Memory balloon model must be virtio to set the"
" collection period"));
goto endjob;
}
persistentDef->memballoon->period = period;
ret = virDomainSaveConfig(cfg->configDir, driver->caps, persistentDef);
goto endjob;
}
ret = 0;
endjob:
qemuDomainObjEndJob(driver, vm);
cleanup:
virDomainObjEndAPI(&vm);
virObjectUnref(cfg);
return ret;
}
static int qemuDomainInjectNMI(virDomainPtr domain, unsigned int flags)
{
virQEMUDriverPtr driver = domain->conn->privateData;
virDomainObjPtr vm = NULL;
int ret = -1;
qemuDomainObjPrivatePtr priv;
virCheckFlags(0, -1);
if (!(vm = qemuDomObjFromDomain(domain)))
return -1;
if (virDomainInjectNMIEnsureACL(domain->conn, vm->def) < 0)
goto cleanup;
priv = vm->privateData;
if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_MODIFY) < 0)
goto cleanup;
if (virDomainObjCheckActive(vm) < 0)
goto endjob;
qemuDomainObjEnterMonitor(driver, vm);
ret = qemuMonitorInjectNMI(priv->mon);
if (qemuDomainObjExitMonitor(driver, vm) < 0)
ret = -1;
endjob:
qemuDomainObjEndJob(driver, vm);
cleanup:
virDomainObjEndAPI(&vm);
return ret;
}
static int qemuDomainSendKey(virDomainPtr domain,
unsigned int codeset,
unsigned int holdtime,
unsigned int *keycodes,
int nkeycodes,
unsigned int flags)
{
virQEMUDriverPtr driver = domain->conn->privateData;
virDomainObjPtr vm = NULL;
int ret = -1;
qemuDomainObjPrivatePtr priv;
virCheckFlags(0, -1);
/* translate the keycode to QNUM for qemu driver */
if (codeset != VIR_KEYCODE_SET_QNUM) {
size_t i;
int keycode;
for (i = 0; i < nkeycodes; i++) {
keycode = virKeycodeValueTranslate(codeset, VIR_KEYCODE_SET_QNUM,
keycodes[i]);
if (keycode < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("cannot translate keycode %u of %s codeset to qnum keycode"),
keycodes[i],
virKeycodeSetTypeToString(codeset));
return -1;
}
keycodes[i] = keycode;
}
}
if (!(vm = qemuDomObjFromDomain(domain)))
goto cleanup;
priv = vm->privateData;
if (virDomainSendKeyEnsureACL(domain->conn, vm->def) < 0)
goto cleanup;
if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_MODIFY) < 0)
goto cleanup;
if (virDomainObjCheckActive(vm) < 0)
goto endjob;
qemuDomainObjEnterMonitor(driver, vm);
ret = qemuMonitorSendKey(priv->mon, holdtime, keycodes, nkeycodes);
if (qemuDomainObjExitMonitor(driver, vm) < 0)
ret = -1;
endjob:
qemuDomainObjEndJob(driver, vm);
cleanup:
virDomainObjEndAPI(&vm);
return ret;
}
static int
qemuDomainGetInfo(virDomainPtr dom,
virDomainInfoPtr info)
{
unsigned long long maxmem;
virQEMUDriverPtr driver = dom->conn->privateData;
virDomainObjPtr vm;
int ret = -1;
if (!(vm = qemuDomObjFromDomain(dom)))
goto cleanup;
if (virDomainGetInfoEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
if (qemuDomainUpdateCurrentMemorySize(driver, vm) < 0)
goto cleanup;
memset(info, 0, sizeof(*info));
info->state = virDomainObjGetState(vm, NULL);
maxmem = virDomainDefGetMemoryTotal(vm->def);
if (VIR_ASSIGN_IS_OVERFLOW(info->maxMem, maxmem)) {
virReportError(VIR_ERR_OVERFLOW, "%s",
_("Initial memory size too large"));
goto cleanup;
}
if (VIR_ASSIGN_IS_OVERFLOW(info->memory, vm->def->mem.cur_balloon)) {
virReportError(VIR_ERR_OVERFLOW, "%s",
_("Current memory size too large"));
goto cleanup;
}
if (virDomainObjIsActive(vm)) {
if (qemuGetProcessInfo(&(info->cpuTime), NULL, NULL, vm->pid, 0) < 0) {
virReportError(VIR_ERR_OPERATION_FAILED, "%s",
_("cannot read cputime for domain"));
goto cleanup;
}
}
if (VIR_ASSIGN_IS_OVERFLOW(info->nrVirtCpu, virDomainDefGetVcpus(vm->def))) {
virReportError(VIR_ERR_OVERFLOW, "%s", _("cpu count too large"));
goto cleanup;
}
ret = 0;
cleanup:
virDomainObjEndAPI(&vm);
return ret;
}
static int
qemuDomainGetState(virDomainPtr dom,
int *state,
int *reason,
unsigned int flags)
{
virDomainObjPtr vm;
int ret = -1;
virCheckFlags(0, -1);
if (!(vm = qemuDomObjFromDomain(dom)))
goto cleanup;
if (virDomainGetStateEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
*state = virDomainObjGetState(vm, reason);
ret = 0;
cleanup:
virDomainObjEndAPI(&vm);
return ret;
}
static int
qemuDomainGetControlInfo(virDomainPtr dom,
virDomainControlInfoPtr info,
unsigned int flags)
{
virDomainObjPtr vm;
qemuDomainObjPrivatePtr priv;
int ret = -1;
virCheckFlags(0, -1);
if (!(vm = qemuDomObjFromDomain(dom)))
goto cleanup;
if (virDomainGetControlInfoEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
if (virDomainObjCheckActive(vm) < 0)
goto cleanup;
priv = vm->privateData;
memset(info, 0, sizeof(*info));
if (priv->monError) {
info->state = VIR_DOMAIN_CONTROL_ERROR;
info->details = VIR_DOMAIN_CONTROL_ERROR_REASON_MONITOR;
} else if (priv->job.active) {
if (virTimeMillisNow(&info->stateTime) < 0)
goto cleanup;
if (priv->job.current) {
info->state = VIR_DOMAIN_CONTROL_JOB;
info->stateTime -= priv->job.current->started;
} else {
if (priv->monStart > 0) {
info->state = VIR_DOMAIN_CONTROL_OCCUPIED;
info->stateTime -= priv->monStart;
} else {
/* At this point the domain has an active job, but monitor was
* not entered and the domain object lock is not held thus we
* are stuck in the job forever due to a programming error.
*/
info->state = VIR_DOMAIN_CONTROL_ERROR;
info->details = VIR_DOMAIN_CONTROL_ERROR_REASON_INTERNAL;
info->stateTime = 0;
}
}
} else {
info->state = VIR_DOMAIN_CONTROL_OK;
}
ret = 0;
cleanup:
virDomainObjEndAPI(&vm);
return ret;
}
/* It would be nice to replace 'Qemud' with 'Qemu' but
* this magic string is ABI, so it can't be changed
*/
#define QEMU_SAVE_MAGIC "LibvirtQemudSave"
#define QEMU_SAVE_PARTIAL "LibvirtQemudPart"
#define QEMU_SAVE_VERSION 2
verify(sizeof(QEMU_SAVE_MAGIC) == sizeof(QEMU_SAVE_PARTIAL));
typedef enum {
QEMU_SAVE_FORMAT_RAW = 0,
QEMU_SAVE_FORMAT_GZIP = 1,
QEMU_SAVE_FORMAT_BZIP2 = 2,
/*
* Deprecated by xz and never used as part of a release
* QEMU_SAVE_FORMAT_LZMA
*/
QEMU_SAVE_FORMAT_XZ = 3,
QEMU_SAVE_FORMAT_LZOP = 4,
/* Note: add new members only at the end.
These values are used in the on-disk format.
Do not change or re-use numbers. */
QEMU_SAVE_FORMAT_LAST
} virQEMUSaveFormat;
VIR_ENUM_DECL(qemuSaveCompression)
VIR_ENUM_IMPL(qemuSaveCompression, QEMU_SAVE_FORMAT_LAST,
"raw",
"gzip",
"bzip2",
"xz",
"lzop")
VIR_ENUM_DECL(qemuDumpFormat)
VIR_ENUM_IMPL(qemuDumpFormat, VIR_DOMAIN_CORE_DUMP_FORMAT_LAST,
"elf",
"kdump-zlib",
"kdump-lzo",
"kdump-snappy")
typedef struct _virQEMUSaveHeader virQEMUSaveHeader;
typedef virQEMUSaveHeader *virQEMUSaveHeaderPtr;
struct _virQEMUSaveHeader {
char magic[sizeof(QEMU_SAVE_MAGIC)-1];
uint32_t version;
uint32_t data_len;
uint32_t was_running;
uint32_t compressed;
uint32_t cookieOffset;
uint32_t unused[14];
};
typedef struct _virQEMUSaveData virQEMUSaveData;
typedef virQEMUSaveData *virQEMUSaveDataPtr;
struct _virQEMUSaveData {
virQEMUSaveHeader header;
char *xml;
char *cookie;
};
static inline void
bswap_header(virQEMUSaveHeaderPtr hdr)
{
hdr->version = bswap_32(hdr->version);
hdr->data_len = bswap_32(hdr->data_len);
hdr->was_running = bswap_32(hdr->was_running);
hdr->compressed = bswap_32(hdr->compressed);
hdr->cookieOffset = bswap_32(hdr->cookieOffset);
}
static void
virQEMUSaveDataFree(virQEMUSaveDataPtr data)
{
if (!data)
return;
VIR_FREE(data->xml);
VIR_FREE(data->cookie);
VIR_FREE(data);
}
/**
* This function steals @domXML on success.
*/
static virQEMUSaveDataPtr
virQEMUSaveDataNew(char *domXML,
qemuDomainSaveCookiePtr cookieObj,
bool running,
int compressed,
virDomainXMLOptionPtr xmlopt)
{
virQEMUSaveDataPtr data = NULL;
virQEMUSaveHeaderPtr header;
if (VIR_ALLOC(data) < 0)
return NULL;
VIR_STEAL_PTR(data->xml, domXML);
if (cookieObj &&
!(data->cookie = virSaveCookieFormat((virObjectPtr) cookieObj,
virDomainXMLOptionGetSaveCookie(xmlopt))))
goto error;
header = &data->header;
memcpy(header->magic, QEMU_SAVE_PARTIAL, sizeof(header->magic));
header->version = QEMU_SAVE_VERSION;
header->was_running = running ? 1 : 0;
header->compressed = compressed;
return data;
error:
virQEMUSaveDataFree(data);
return NULL;
}
/* virQEMUSaveDataWrite:
*
* Writes libvirt's header (including domain XML) into a saved image of a
* running domain. If @header has data_len filled in (because it was previously
* read from the file), the function will make sure the new data will fit
* within data_len.
*
* Returns -1 on failure, or 0 on success.
*/
static int
virQEMUSaveDataWrite(virQEMUSaveDataPtr data,
int fd,
const char *path)
{
virQEMUSaveHeaderPtr header = &data->header;
size_t len;
size_t xml_len;
size_t cookie_len = 0;
int ret = -1;
size_t zerosLen = 0;
char *zeros = NULL;
xml_len = strlen(data->xml) + 1;
if (data->cookie)
cookie_len = strlen(data->cookie) + 1;
len = xml_len + cookie_len;
if (header->data_len > 0) {
if (len > header->data_len) {
virReportError(VIR_ERR_OPERATION_FAILED, "%s",
_("new xml too large to fit in file"));
goto cleanup;
}
zerosLen = header->data_len - len;
if (VIR_ALLOC_N(zeros, zerosLen) < 0)
goto cleanup;
} else {
header->data_len = len;
}
if (data->cookie)
header->cookieOffset = xml_len;
if (safewrite(fd, header, sizeof(*header)) != sizeof(*header)) {
virReportSystemError(errno,
_("failed to write header to domain save file '%s'"),
path);
goto cleanup;
}
if (safewrite(fd, data->xml, xml_len) != xml_len) {
virReportSystemError(errno,
_("failed to write domain xml to '%s'"),
path);
goto cleanup;
}
if (data->cookie &&
safewrite(fd, data->cookie, cookie_len) != cookie_len) {
virReportSystemError(errno,
_("failed to write cookie to '%s'"),
path);
goto cleanup;
}
if (safewrite(fd, zeros, zerosLen) != zerosLen) {
virReportSystemError(errno,
_("failed to write padding to '%s'"),
path);
goto cleanup;
}
ret = 0;
cleanup:
VIR_FREE(zeros);
return ret;
}
static int
virQEMUSaveDataFinish(virQEMUSaveDataPtr data,
int *fd,
const char *path)
{
virQEMUSaveHeaderPtr header = &data->header;
memcpy(header->magic, QEMU_SAVE_MAGIC, sizeof(header->magic));
if (safewrite(*fd, header, sizeof(*header)) != sizeof(*header) ||
VIR_CLOSE(*fd) < 0) {
virReportSystemError(errno,
_("failed to write header to domain save file '%s'"),
path);
return -1;
}
return 0;
}
static virCommandPtr
qemuCompressGetCommand(virQEMUSaveFormat compression)
{
virCommandPtr ret = NULL;
const char *prog = qemuSaveCompressionTypeToString(compression);
if (!prog) {
virReportError(VIR_ERR_OPERATION_FAILED,
_("Invalid compressed save format %d"),
compression);
return NULL;
}
ret = virCommandNew(prog);
virCommandAddArg(ret, "-dc");
if (compression == QEMU_SAVE_FORMAT_LZOP)
virCommandAddArg(ret, "--ignore-warn");
return ret;
}
/**
* qemuOpenFile:
* @driver: driver object
* @vm: domain object
* @path: path to file to open
* @oflags: flags for opening/creation of the file
* @needUnlink: set to true if file was created by this function
*
* Internal function to properly create or open existing files, with
* ownership affected by qemu driver setup and domain DAC label.
*
* Returns the file descriptor on success and negative errno on failure.
*
* This function should not be used on storage sources. Use
* qemuDomainStorageFileInit and storage driver APIs if possible.
**/
static int
qemuOpenFile(virQEMUDriverPtr driver,
virDomainObjPtr vm,
const char *path,
int oflags,
bool *needUnlink)
{
int ret = -1;
virQEMUDriverConfigPtr cfg = virQEMUDriverGetConfig(driver);
uid_t user = cfg->user;
gid_t group = cfg->group;
bool dynamicOwnership = cfg->dynamicOwnership;
virSecurityLabelDefPtr seclabel;
virObjectUnref(cfg);
/* TODO: Take imagelabel into account? */
if (vm &&
(seclabel = virDomainDefGetSecurityLabelDef(vm->def, "dac")) != NULL &&
seclabel->label != NULL &&
(virParseOwnershipIds(seclabel->label, &user, &group) < 0))
goto cleanup;
ret = qemuOpenFileAs(user, group, dynamicOwnership,
path, oflags, needUnlink);
cleanup:
return ret;
}
static int
qemuOpenFileAs(uid_t fallback_uid, gid_t fallback_gid,
bool dynamicOwnership,
const char *path, int oflags,
bool *needUnlink)
{
struct stat sb;
bool is_reg = true;
bool need_unlink = false;
unsigned int vfoflags = 0;
int fd = -1;
int path_shared = virFileIsSharedFS(path);
uid_t uid = geteuid();
gid_t gid = getegid();
/* path might be a pre-existing block dev, in which case
* we need to skip the create step, and also avoid unlink
* in the failure case */
if (oflags & O_CREAT) {
need_unlink = true;
/* Don't force chown on network-shared FS
* as it is likely to fail. */
if (path_shared <= 0 || dynamicOwnership)
vfoflags |= VIR_FILE_OPEN_FORCE_OWNER;
if (stat(path, &sb) == 0) {
/* It already exists, we don't want to delete it on error */
need_unlink = false;
is_reg = !!S_ISREG(sb.st_mode);
/* If the path is regular file which exists
* already and dynamic_ownership is off, we don't
* want to change its ownership, just open it as-is */
if (is_reg && !dynamicOwnership) {
uid = sb.st_uid;
gid = sb.st_gid;
}
}
}
/* First try creating the file as root */
if (!is_reg) {
if ((fd = open(path, oflags & ~O_CREAT)) < 0) {
fd = -errno;
goto error;
}
} else {
if ((fd = virFileOpenAs(path, oflags, S_IRUSR | S_IWUSR, uid, gid,
vfoflags | VIR_FILE_OPEN_NOFORK)) < 0) {
/* If we failed as root, and the error was permission-denied
(EACCES or EPERM), assume it's on a network-connected share
where root access is restricted (eg, root-squashed NFS). If the
qemu user is non-root, just set a flag to
bypass security driver shenanigans, and retry the operation
after doing setuid to qemu user */
if ((fd != -EACCES && fd != -EPERM) || fallback_uid == geteuid())
goto error;
/* On Linux we can also verify the FS-type of the directory. */
switch (path_shared) {
case 1:
/* it was on a network share, so we'll continue
* as outlined above
*/
break;
case -1:
virReportSystemError(-fd, oflags & O_CREAT
? _("Failed to create file "
"'%s': couldn't determine fs type")
: _("Failed to open file "
"'%s': couldn't determine fs type"),
path);
goto cleanup;
case 0:
default:
/* local file - log the error returned by virFileOpenAs */
goto error;
}
/* If we created the file above, then we need to remove it;
* otherwise, the next attempt to create will fail. If the
* file had already existed before we got here, then we also
* don't want to delete it and allow the following to succeed
* or fail based on existing protections
*/
if (need_unlink)
unlink(path);
/* Retry creating the file as qemu user */
/* Since we're passing different modes... */
vfoflags |= VIR_FILE_OPEN_FORCE_MODE;
if ((fd = virFileOpenAs(path, oflags,
S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP,
fallback_uid, fallback_gid,
vfoflags | VIR_FILE_OPEN_FORK)) < 0) {
virReportSystemError(-fd, oflags & O_CREAT
? _("Error from child process creating '%s'")
: _("Error from child process opening '%s'"),
path);
goto cleanup;
}
}
}
cleanup:
if (needUnlink)
*needUnlink = need_unlink;
return fd;
error:
virReportSystemError(-fd, oflags & O_CREAT
? _("Failed to create file '%s'")
: _("Failed to open file '%s'"),
path);
goto cleanup;
}
static int
qemuFileWrapperFDClose(virDomainObjPtr vm,
virFileWrapperFdPtr fd)
{
int ret;
/* virFileWrapperFd uses iohelper to write data onto disk.
* However, iohelper calls fdatasync() which may take ages to
* finish. Therefore, we shouldn't be waiting with the domain
* object locked. */
/* XXX Currently, this function is intended for *Save() only
* as restore needs some reworking before it's ready for
* this. */
virObjectUnlock(vm);
ret = virFileWrapperFdClose(fd);
virObjectLock(vm);
if (!virDomainObjIsActive(vm)) {
if (virGetLastErrorCode() == VIR_ERR_OK)
virReportError(VIR_ERR_OPERATION_FAILED, "%s",
_("domain is no longer running"));
ret = -1;
}
return ret;
}
/* Helper function to execute a migration to file with a correct save header
* the caller needs to make sure that the processors are stopped and do all other
* actions besides saving memory */
static int
qemuDomainSaveMemory(virQEMUDriverPtr driver,
virDomainObjPtr vm,
const char *path,
virQEMUSaveDataPtr data,
const char *compressedpath,
unsigned int flags,
qemuDomainAsyncJob asyncJob)
{
virQEMUDriverConfigPtr cfg = virQEMUDriverGetConfig(driver);
bool needUnlink = false;
int ret = -1;
int fd = -1;
int directFlag = 0;
virFileWrapperFdPtr wrapperFd = NULL;
unsigned int wrapperFlags = VIR_FILE_WRAPPER_NON_BLOCKING;
/* Obtain the file handle. */
if ((flags & VIR_DOMAIN_SAVE_BYPASS_CACHE)) {
wrapperFlags |= VIR_FILE_WRAPPER_BYPASS_CACHE;
directFlag = virFileDirectFdFlag();
if (directFlag < 0) {
virReportError(VIR_ERR_OPERATION_FAILED, "%s",
_("bypass cache unsupported by this system"));
goto cleanup;
}
}
fd = qemuOpenFileAs(cfg->user, cfg->group, false, path,
O_WRONLY | O_TRUNC | O_CREAT | directFlag,
&needUnlink);
if (fd < 0)
goto cleanup;
if (qemuSecuritySetImageFDLabel(driver->securityManager, vm->def, fd) < 0)
goto cleanup;
if (!(wrapperFd = virFileWrapperFdNew(&fd, path, wrapperFlags)))
goto cleanup;
if (virQEMUSaveDataWrite(data, fd, path) < 0)
goto cleanup;
/* Perform the migration */
if (qemuMigrationSrcToFile(driver, vm, fd, compressedpath, asyncJob) < 0)
goto cleanup;
/* Touch up file header to mark image complete. */
/* Reopen the file to touch up the header, since we aren't set
* up to seek backwards on wrapperFd. The reopened fd will
* trigger a single page of file system cache pollution, but
* that's acceptable. */
if (VIR_CLOSE(fd) < 0) {
virReportSystemError(errno, _("unable to close %s"), path);
goto cleanup;
}
if (qemuFileWrapperFDClose(vm, wrapperFd) < 0)
goto cleanup;
if ((fd = qemuOpenFile(driver, vm, path, O_WRONLY, NULL)) < 0 ||
virQEMUSaveDataFinish(data, &fd, path) < 0)
goto cleanup;
ret = 0;
cleanup:
VIR_FORCE_CLOSE(fd);
virFileWrapperFdFree(wrapperFd);
virObjectUnref(cfg);
if (ret < 0 && needUnlink)
unlink(path);
return ret;
}
/* The vm must be active + locked. Vm will be unlocked and
* potentially free'd after this returns (eg transient VMs are freed
* shutdown). So 'vm' must not be referenced by the caller after
* this returns (whether returning success or failure).
*/
static int
qemuDomainSaveInternal(virQEMUDriverPtr driver,
virDomainObjPtr vm, const char *path,
int compressed, const char *compressedpath,
const char *xmlin, unsigned int flags)
{
char *xml = NULL;
bool was_running = false;
int ret = -1;
virObjectEventPtr event = NULL;
qemuDomainObjPrivatePtr priv = vm->privateData;
virCapsPtr caps;
virQEMUSaveDataPtr data = NULL;
qemuDomainSaveCookiePtr cookie = NULL;
if (!(caps = virQEMUDriverGetCapabilities(driver, false)))
goto cleanup;
if (!qemuMigrationSrcIsAllowed(driver, vm, false, 0))
goto cleanup;
if (qemuDomainObjBeginAsyncJob(driver, vm, QEMU_ASYNC_JOB_SAVE,
VIR_DOMAIN_JOB_OPERATION_SAVE, flags) < 0)
goto cleanup;
if (!virDomainObjIsActive(vm)) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("guest unexpectedly quit"));
goto endjob;
}
priv->job.current->statsType = QEMU_DOMAIN_JOB_STATS_TYPE_SAVEDUMP;
/* Pause */
if (virDomainObjGetState(vm, NULL) == VIR_DOMAIN_RUNNING) {
was_running = true;
if (qemuProcessStopCPUs(driver, vm, VIR_DOMAIN_PAUSED_SAVE,
QEMU_ASYNC_JOB_SAVE) < 0)
goto endjob;
if (!virDomainObjIsActive(vm)) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("guest unexpectedly quit"));
goto endjob;
}
}
/* libvirt-domain.c already guaranteed these two flags are exclusive. */
if (flags & VIR_DOMAIN_SAVE_RUNNING)
was_running = true;
else if (flags & VIR_DOMAIN_SAVE_PAUSED)
was_running = false;
/* Get XML for the domain. Restore needs only the inactive xml,
* including secure. We should get the same result whether xmlin
* is NULL or whether it was the live xml of the domain moments
* before. */
if (xmlin) {
virDomainDefPtr def = NULL;
if (!(def = virDomainDefParseString(xmlin, caps, driver->xmlopt, NULL,
VIR_DOMAIN_DEF_PARSE_INACTIVE |
VIR_DOMAIN_DEF_PARSE_SKIP_VALIDATE))) {
goto endjob;
}
if (!qemuDomainCheckABIStability(driver, vm, def)) {
virDomainDefFree(def);
goto endjob;
}
xml = qemuDomainDefFormatLive(driver, def, NULL, true, true);
} else {
xml = qemuDomainDefFormatLive(driver, vm->def, priv->origCPU, true, true);
}
if (!xml) {
virReportError(VIR_ERR_OPERATION_FAILED,
"%s", _("failed to get domain xml"));
goto endjob;
}
if (!(cookie = qemuDomainSaveCookieNew(vm)))
goto endjob;
if (!(data = virQEMUSaveDataNew(xml, cookie, was_running, compressed,
driver->xmlopt)))
goto endjob;
xml = NULL;
ret = qemuDomainSaveMemory(driver, vm, path, data, compressedpath,
flags, QEMU_ASYNC_JOB_SAVE);
if (ret < 0)
goto endjob;
/* Shut it down */
qemuProcessStop(driver, vm, VIR_DOMAIN_SHUTOFF_SAVED,
QEMU_ASYNC_JOB_SAVE, 0);
virDomainAuditStop(vm, "saved");
event = virDomainEventLifecycleNewFromObj(vm, VIR_DOMAIN_EVENT_STOPPED,
VIR_DOMAIN_EVENT_STOPPED_SAVED);
endjob:
if (ret < 0) {
if (was_running && virDomainObjIsActive(vm)) {
virErrorPtr save_err = virSaveLastError();
if (qemuProcessStartCPUs(driver, vm,
VIR_DOMAIN_RUNNING_SAVE_CANCELED,
QEMU_ASYNC_JOB_SAVE) < 0) {
VIR_WARN("Unable to resume guest CPUs after save failure");
virObjectEventStateQueue(driver->domainEventState,
virDomainEventLifecycleNewFromObj(vm,
VIR_DOMAIN_EVENT_SUSPENDED,
VIR_DOMAIN_EVENT_SUSPENDED_API_ERROR));
}
virSetError(save_err);
virFreeError(save_err);
}
}
qemuDomainObjEndAsyncJob(driver, vm);
if (ret == 0)
qemuDomainRemoveInactiveJob(driver, vm);
cleanup:
virObjectUnref(cookie);
VIR_FREE(xml);
virQEMUSaveDataFree(data);
virObjectEventStateQueue(driver->domainEventState, event);
virObjectUnref(caps);
return ret;
}
/* qemuGetCompressionProgram:
* @imageFormat: String representation from qemu.conf for the compression
* image format being used (dump, save, or snapshot).
* @compresspath: Pointer to a character string to store the fully qualified
* path from virFindFileInPath.
* @styleFormat: String representing the style of format (dump, save, snapshot)
* @use_raw_on_fail: Boolean indicating how to handle the error path. For
* callers that are OK with invalid data or inability to
* find the compression program, just return a raw format
* and let the path remain as NULL.
*
* Returns:
* virQEMUSaveFormat - Integer representation of the compression
* program to be used for particular style
* (e.g. dump, save, or snapshot).
* QEMU_SAVE_FORMAT_RAW - If there is no qemu.conf imageFormat value or
* no there was an error, then just return RAW
* indicating none.
*/
static int ATTRIBUTE_NONNULL(2)
qemuGetCompressionProgram(const char *imageFormat,
char **compresspath,
const char *styleFormat,
bool use_raw_on_fail)
{
int ret;
*compresspath = NULL;
if (!imageFormat)
return QEMU_SAVE_FORMAT_RAW;
if ((ret = qemuSaveCompressionTypeFromString(imageFormat)) < 0)
goto error;
if (ret == QEMU_SAVE_FORMAT_RAW)
return QEMU_SAVE_FORMAT_RAW;
if (!(*compresspath = virFindFileInPath(imageFormat)))
goto error;
return ret;
error:
if (ret < 0) {
if (use_raw_on_fail)
VIR_WARN("Invalid %s image format specified in "
"configuration file, using raw",
styleFormat);
else
virReportError(VIR_ERR_OPERATION_FAILED,
_("Invalid %s image format specified "
"in configuration file"),
styleFormat);
} else {
if (use_raw_on_fail)
VIR_WARN("Compression program for %s image format in "
"configuration file isn't available, using raw",
styleFormat);
else
virReportError(VIR_ERR_OPERATION_FAILED,
_("Compression program for %s image format "
"in configuration file isn't available"),
styleFormat);
}
/* Use "raw" as the format if the specified format is not valid,
* or the compress program is not available. */
if (use_raw_on_fail)
return QEMU_SAVE_FORMAT_RAW;
return -1;
}
static int
qemuDomainSaveFlags(virDomainPtr dom, const char *path, const char *dxml,
unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
int compressed;
char *compressedpath = NULL;
int ret = -1;
virDomainObjPtr vm = NULL;
virQEMUDriverConfigPtr cfg = NULL;
virCheckFlags(VIR_DOMAIN_SAVE_BYPASS_CACHE |
VIR_DOMAIN_SAVE_RUNNING |
VIR_DOMAIN_SAVE_PAUSED, -1);
cfg = virQEMUDriverGetConfig(driver);
if ((compressed = qemuGetCompressionProgram(cfg->saveImageFormat,
&compressedpath,
"save", false)) < 0)
goto cleanup;
if (!(vm = qemuDomObjFromDomain(dom)))
goto cleanup;
if (virDomainSaveFlagsEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
if (virDomainObjCheckActive(vm) < 0)
goto cleanup;
ret = qemuDomainSaveInternal(driver, vm, path, compressed,
compressedpath, dxml, flags);
cleanup:
virDomainObjEndAPI(&vm);
VIR_FREE(compressedpath);
virObjectUnref(cfg);
return ret;
}
static int
qemuDomainSave(virDomainPtr dom, const char *path)
{
return qemuDomainSaveFlags(dom, path, NULL, 0);
}
static char *
qemuDomainManagedSavePath(virQEMUDriverPtr driver, virDomainObjPtr vm)
{
char *ret;
virQEMUDriverConfigPtr cfg = virQEMUDriverGetConfig(driver);
if (virAsprintf(&ret, "%s/%s.save", cfg->saveDir, vm->def->name) < 0) {
virObjectUnref(cfg);
return NULL;
}
virObjectUnref(cfg);
return ret;
}
static int
qemuDomainManagedSave(virDomainPtr dom, unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
virQEMUDriverConfigPtr cfg = NULL;
int compressed;
char *compressedpath = NULL;
virDomainObjPtr vm;
char *name = NULL;
int ret = -1;
virCheckFlags(VIR_DOMAIN_SAVE_BYPASS_CACHE |
VIR_DOMAIN_SAVE_RUNNING |
VIR_DOMAIN_SAVE_PAUSED, -1);
if (!(vm = qemuDomObjFromDomain(dom)))
return -1;
if (virDomainManagedSaveEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
if (virDomainObjCheckActive(vm) < 0)
goto cleanup;
if (!vm->persistent) {
virReportError(VIR_ERR_OPERATION_INVALID, "%s",
_("cannot do managed save for transient domain"));
goto cleanup;
}
cfg = virQEMUDriverGetConfig(driver);
if ((compressed = qemuGetCompressionProgram(cfg->saveImageFormat,
&compressedpath,
"save", false)) < 0)
goto cleanup;
if (!(name = qemuDomainManagedSavePath(driver, vm)))
goto cleanup;
VIR_INFO("Saving state of domain '%s' to '%s'", vm->def->name, name);
ret = qemuDomainSaveInternal(driver, vm, name, compressed,
compressedpath, NULL, flags);
if (ret == 0)
vm->hasManagedSave = true;
cleanup:
virDomainObjEndAPI(&vm);
VIR_FREE(name);
VIR_FREE(compressedpath);
virObjectUnref(cfg);
return ret;
}
static int
qemuDomainManagedSaveLoad(virDomainObjPtr vm,
void *opaque)
{
virQEMUDriverPtr driver = opaque;
char *name;
int ret = -1;
virObjectLock(vm);
if (!(name = qemuDomainManagedSavePath(driver, vm)))
goto cleanup;
vm->hasManagedSave = virFileExists(name);
ret = 0;
cleanup:
virObjectUnlock(vm);
VIR_FREE(name);
return ret;
}
static int
qemuDomainHasManagedSaveImage(virDomainPtr dom, unsigned int flags)
{
virDomainObjPtr vm = NULL;
int ret = -1;
virCheckFlags(0, -1);
if (!(vm = qemuDomObjFromDomain(dom)))
return -1;
if (virDomainHasManagedSaveImageEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
ret = vm->hasManagedSave;
cleanup:
virDomainObjEndAPI(&vm);
return ret;
}
static int
qemuDomainManagedSaveRemove(virDomainPtr dom, unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
virDomainObjPtr vm;
int ret = -1;
char *name = NULL;
virCheckFlags(0, -1);
if (!(vm = qemuDomObjFromDomain(dom)))
return -1;
if (virDomainManagedSaveRemoveEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
if (!(name = qemuDomainManagedSavePath(driver, vm)))
goto cleanup;
if (unlink(name) < 0) {
virReportSystemError(errno,
_("Failed to remove managed save file '%s'"),
name);
goto cleanup;
}
vm->hasManagedSave = false;
ret = 0;
cleanup:
VIR_FREE(name);
virDomainObjEndAPI(&vm);
return ret;
}
/**
* qemuDumpWaitForCompletion:
* @vm: domain object
*
* If the query dump capability exists, then it's possible to start a
* guest memory dump operation using a thread via a 'detach' qualifier
* to the dump guest memory command. This allows the async check if the
* dump is done.
*
* Returns 0 on success, -1 on failure
*/
static int
qemuDumpWaitForCompletion(virDomainObjPtr vm)
{
qemuDomainObjPrivatePtr priv = vm->privateData;
int ret = -1;
VIR_DEBUG("Waiting for dump completion");
while (!priv->job.dumpCompleted && !priv->job.abortJob) {
if (virDomainObjWait(vm) < 0)
return -1;
}
if (priv->job.current->stats.dump.status == QEMU_MONITOR_DUMP_STATUS_FAILED) {
if (priv->job.error)
virReportError(VIR_ERR_OPERATION_FAILED,
_("memory-only dump failed: %s"),
priv->job.error);
else
virReportError(VIR_ERR_OPERATION_FAILED, "%s",
_("memory-only dump failed for unknown reason"));
goto cleanup;
}
qemuDomainJobInfoUpdateTime(priv->job.current);
ret = 0;
cleanup:
return ret;
}
static int
qemuDumpToFd(virQEMUDriverPtr driver,
virDomainObjPtr vm,
int fd,
qemuDomainAsyncJob asyncJob,
const char *dumpformat)
{
qemuDomainObjPrivatePtr priv = vm->privateData;
bool detach = false;
int ret = -1;
if (!virQEMUCapsGet(priv->qemuCaps, QEMU_CAPS_DUMP_GUEST_MEMORY)) {
virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s",
_("dump-guest-memory is not supported"));
return -1;
}
detach = virQEMUCapsGet(priv->qemuCaps, QEMU_CAPS_DUMP_COMPLETED);
if (qemuSecuritySetImageFDLabel(driver->securityManager, vm->def, fd) < 0)
return -1;
if (detach)
priv->job.current->statsType = QEMU_DOMAIN_JOB_STATS_TYPE_MEMDUMP;
else
VIR_FREE(priv->job.current);
if (qemuDomainObjEnterMonitorAsync(driver, vm, asyncJob) < 0)
return -1;
if (dumpformat) {
ret = qemuMonitorGetDumpGuestMemoryCapability(priv->mon, dumpformat);
if (ret <= 0) {
virReportError(VIR_ERR_INVALID_ARG,
_("unsupported dumpformat '%s' "
"for this QEMU binary"),
dumpformat);
ret = -1;
ignore_value(qemuDomainObjExitMonitor(driver, vm));
goto cleanup;
}
}
ret = qemuMonitorDumpToFd(priv->mon, fd, dumpformat, detach);
if ((qemuDomainObjExitMonitor(driver, vm) < 0) || ret < 0)
goto cleanup;
if (detach)
ret = qemuDumpWaitForCompletion(vm);
cleanup:
return ret;
}
static int
doCoreDump(virQEMUDriverPtr driver,
virDomainObjPtr vm,
const char *path,
unsigned int dump_flags,
unsigned int dumpformat)
{
int fd = -1;
int ret = -1;
virFileWrapperFdPtr wrapperFd = NULL;
int directFlag = 0;
unsigned int flags = VIR_FILE_WRAPPER_NON_BLOCKING;
const char *memory_dump_format = NULL;
virQEMUDriverConfigPtr cfg = virQEMUDriverGetConfig(driver);
char *compressedpath = NULL;
/* We reuse "save" flag for "dump" here. Then, we can support the same
* format in "save" and "dump". This path doesn't need the compression
* program to exist and can ignore the return value - it only cares to
* get the compressedpath */
ignore_value(qemuGetCompressionProgram(cfg->dumpImageFormat,
&compressedpath,
"dump", true));
/* Create an empty file with appropriate ownership. */
if (dump_flags & VIR_DUMP_BYPASS_CACHE) {
flags |= VIR_FILE_WRAPPER_BYPASS_CACHE;
directFlag = virFileDirectFdFlag();
if (directFlag < 0) {
virReportError(VIR_ERR_OPERATION_FAILED, "%s",
_("bypass cache unsupported by this system"));
goto cleanup;
}
}
/* Core dumps usually imply last-ditch analysis efforts are
* desired, so we intentionally do not unlink even if a file was
* created. */
if ((fd = qemuOpenFileAs(cfg->user, cfg->group, false, path,
O_CREAT | O_TRUNC | O_WRONLY | directFlag,
NULL)) < 0)
goto cleanup;
if (!(wrapperFd = virFileWrapperFdNew(&fd, path, flags)))
goto cleanup;
if (dump_flags & VIR_DUMP_MEMORY_ONLY) {
if (!(memory_dump_format = qemuDumpFormatTypeToString(dumpformat))) {
virReportError(VIR_ERR_INVALID_ARG,
_("unknown dumpformat '%d'"), dumpformat);
goto cleanup;
}
/* qemu dumps in "elf" without dumpformat set */
if (STREQ(memory_dump_format, "elf"))
memory_dump_format = NULL;
ret = qemuDumpToFd(driver, vm, fd, QEMU_ASYNC_JOB_DUMP,
memory_dump_format);
} else {
if (dumpformat != VIR_DOMAIN_CORE_DUMP_FORMAT_RAW) {
virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s",
_("kdump-compressed format is only supported with "
"memory-only dump"));
goto cleanup;
}
if (!qemuMigrationSrcIsAllowed(driver, vm, false, 0))
goto cleanup;
ret = qemuMigrationSrcToFile(driver, vm, fd, compressedpath,
QEMU_ASYNC_JOB_DUMP);
}
if (ret < 0)
goto cleanup;
if (VIR_CLOSE(fd) < 0) {
virReportSystemError(errno,
_("unable to close file %s"),
path);
goto cleanup;
}
if (qemuFileWrapperFDClose(vm, wrapperFd) < 0)
goto cleanup;
ret = 0;
cleanup:
VIR_FORCE_CLOSE(fd);
if (ret != 0)
unlink(path);
virFileWrapperFdFree(wrapperFd);
VIR_FREE(compressedpath);
virObjectUnref(cfg);
return ret;
}
static int
qemuDomainCoreDumpWithFormat(virDomainPtr dom,
const char *path,
unsigned int dumpformat,
unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
virDomainObjPtr vm;
qemuDomainObjPrivatePtr priv = NULL;
bool resume = false, paused = false;
int ret = -1;
virObjectEventPtr event = NULL;
virCheckFlags(VIR_DUMP_LIVE | VIR_DUMP_CRASH |
VIR_DUMP_BYPASS_CACHE | VIR_DUMP_RESET |
VIR_DUMP_MEMORY_ONLY, -1);
if (!(vm = qemuDomObjFromDomain(dom)))
return -1;
if (virDomainCoreDumpWithFormatEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
if (qemuDomainObjBeginAsyncJob(driver, vm,
QEMU_ASYNC_JOB_DUMP,
VIR_DOMAIN_JOB_OPERATION_DUMP,
flags) < 0)
goto cleanup;
if (virDomainObjCheckActive(vm) < 0)
goto endjob;
priv = vm->privateData;
priv->job.current->statsType = QEMU_DOMAIN_JOB_STATS_TYPE_SAVEDUMP;
/* Migrate will always stop the VM, so the resume condition is
independent of whether the stop command is issued. */
resume = virDomainObjGetState(vm, NULL) == VIR_DOMAIN_RUNNING;
/* Pause domain for non-live dump */
if (!(flags & VIR_DUMP_LIVE) &&
virDomainObjGetState(vm, NULL) == VIR_DOMAIN_RUNNING) {
if (qemuProcessStopCPUs(driver, vm, VIR_DOMAIN_PAUSED_DUMP,
QEMU_ASYNC_JOB_DUMP) < 0)
goto endjob;
paused = true;
if (!virDomainObjIsActive(vm)) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("guest unexpectedly quit"));
goto endjob;
}
}
if ((ret = doCoreDump(driver, vm, path, flags, dumpformat)) < 0)
goto endjob;
paused = true;
endjob:
if ((ret == 0) && (flags & VIR_DUMP_CRASH)) {
qemuProcessStop(driver, vm, VIR_DOMAIN_SHUTOFF_CRASHED,
QEMU_ASYNC_JOB_DUMP, 0);
virDomainAuditStop(vm, "crashed");
event = virDomainEventLifecycleNewFromObj(vm,
VIR_DOMAIN_EVENT_STOPPED,
VIR_DOMAIN_EVENT_STOPPED_CRASHED);
} else if (((resume && paused) || (flags & VIR_DUMP_RESET)) &&
virDomainObjIsActive(vm)) {
if ((ret == 0) && (flags & VIR_DUMP_RESET)) {
qemuDomainObjEnterMonitor(driver, vm);
ret = qemuMonitorSystemReset(priv->mon);
if (qemuDomainObjExitMonitor(driver, vm) < 0)
ret = -1;
}
if (resume && virDomainObjIsActive(vm)) {
if (qemuProcessStartCPUs(driver, vm,
VIR_DOMAIN_RUNNING_UNPAUSED,
QEMU_ASYNC_JOB_DUMP) < 0) {
event = virDomainEventLifecycleNewFromObj(vm,
VIR_DOMAIN_EVENT_SUSPENDED,
VIR_DOMAIN_EVENT_SUSPENDED_API_ERROR);
if (virGetLastErrorCode() == VIR_ERR_OK)
virReportError(VIR_ERR_OPERATION_FAILED,
"%s", _("resuming after dump failed"));
}
}
}
qemuDomainObjEndAsyncJob(driver, vm);
if (ret == 0 && flags & VIR_DUMP_CRASH)
qemuDomainRemoveInactiveJob(driver, vm);
cleanup:
virDomainObjEndAPI(&vm);
virObjectEventStateQueue(driver->domainEventState, event);
return ret;
}
static int
qemuDomainCoreDump(virDomainPtr dom,
const char *path,
unsigned int flags)
{
return qemuDomainCoreDumpWithFormat(dom, path,
VIR_DOMAIN_CORE_DUMP_FORMAT_RAW,
flags);
}
static char *
qemuDomainScreenshot(virDomainPtr dom,
virStreamPtr st,
unsigned int screen,
unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
virDomainObjPtr vm;
qemuDomainObjPrivatePtr priv;
char *tmp = NULL;
int tmp_fd = -1;
size_t i;
const char *videoAlias = NULL;
char *ret = NULL;
bool unlink_tmp = false;
virQEMUDriverConfigPtr cfg = NULL;
virCheckFlags(0, NULL);
if (!(vm = qemuDomObjFromDomain(dom)))
goto cleanup;
priv = vm->privateData;
cfg = virQEMUDriverGetConfig(driver);
if (virDomainScreenshotEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_QUERY) < 0)
goto cleanup;
if (virDomainObjCheckActive(vm) < 0)
goto endjob;
if (!vm->def->nvideos) {
virReportError(VIR_ERR_OPERATION_INVALID, "%s",
_("no screens to take screenshot from"));
goto endjob;
}
if (screen) {
if (!virQEMUCapsGet(priv->qemuCaps, QEMU_CAPS_SCREENDUMP_DEVICE)) {
virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s",
_("qemu does not allow specifying screen ID"));
goto endjob;
}
for (i = 0; i < vm->def->nvideos; i++) {
const virDomainVideoDef *video = vm->def->videos[i];
if (screen < video->heads) {
videoAlias = video->info.alias;
break;
}
screen -= video->heads;
}
if (i == vm->def->nvideos) {
virReportError(VIR_ERR_OPERATION_INVALID, "%s",
_("no such screen ID"));
goto endjob;
}
}
if (virAsprintf(&tmp, "%s/qemu.screendump.XXXXXX", cfg->cacheDir) < 0)
goto endjob;
if ((tmp_fd = mkostemp(tmp, O_CLOEXEC)) == -1) {
virReportSystemError(errno, _("mkostemp(\"%s\") failed"), tmp);
goto endjob;
}
unlink_tmp = true;
qemuSecuritySetSavedStateLabel(driver, vm, tmp);
qemuDomainObjEnterMonitor(driver, vm);
if (qemuMonitorScreendump(priv->mon, videoAlias, screen, tmp) < 0) {
ignore_value(qemuDomainObjExitMonitor(driver, vm));
goto endjob;
}
if (qemuDomainObjExitMonitor(driver, vm) < 0)
goto endjob;
if (VIR_CLOSE(tmp_fd) < 0) {
virReportSystemError(errno, _("unable to close %s"), tmp);
goto endjob;
}
if (virFDStreamOpenFile(st, tmp, 0, 0, O_RDONLY) < 0) {
virReportError(VIR_ERR_OPERATION_FAILED, "%s",
_("unable to open stream"));
goto endjob;
}
ignore_value(VIR_STRDUP(ret, "image/x-portable-pixmap"));
endjob:
VIR_FORCE_CLOSE(tmp_fd);
if (unlink_tmp)
unlink(tmp);
VIR_FREE(tmp);
qemuDomainObjEndJob(driver, vm);
cleanup:
virDomainObjEndAPI(&vm);
virObjectUnref(cfg);
return ret;
}
static char *
getAutoDumpPath(virQEMUDriverPtr driver,
virDomainObjPtr vm)
{
char *dumpfile = NULL;
char *domname = virDomainDefGetShortName(vm->def);
char timestr[100];
struct tm time_info;
time_t curtime = time(NULL);
virQEMUDriverConfigPtr cfg = NULL;
if (!domname)
return NULL;
cfg = virQEMUDriverGetConfig(driver);
localtime_r(&curtime, &time_info);
strftime(timestr, sizeof(timestr), "%Y-%m-%d-%H:%M:%S", &time_info);
ignore_value(virAsprintf(&dumpfile, "%s/%s-%s",
cfg->autoDumpPath,
domname,
timestr));
virObjectUnref(cfg);
VIR_FREE(domname);
return dumpfile;
}
static void
processWatchdogEvent(virQEMUDriverPtr driver,
virDomainObjPtr vm,
int action)
{
int ret;
virQEMUDriverConfigPtr cfg = virQEMUDriverGetConfig(driver);
char *dumpfile = getAutoDumpPath(driver, vm);
unsigned int flags = VIR_DUMP_MEMORY_ONLY;
if (!dumpfile)
goto cleanup;
switch (action) {
case VIR_DOMAIN_WATCHDOG_ACTION_DUMP:
if (qemuDomainObjBeginAsyncJob(driver, vm,
QEMU_ASYNC_JOB_DUMP,
VIR_DOMAIN_JOB_OPERATION_DUMP,
flags) < 0) {
goto cleanup;
}
if (virDomainObjCheckActive(vm) < 0)
goto endjob;
flags |= cfg->autoDumpBypassCache ? VIR_DUMP_BYPASS_CACHE: 0;
if ((ret = doCoreDump(driver, vm, dumpfile, flags,
VIR_DOMAIN_CORE_DUMP_FORMAT_RAW)) < 0)
virReportError(VIR_ERR_OPERATION_FAILED,
"%s", _("Dump failed"));
ret = qemuProcessStartCPUs(driver, vm,
VIR_DOMAIN_RUNNING_UNPAUSED,
QEMU_ASYNC_JOB_DUMP);
if (ret < 0)
virReportError(VIR_ERR_OPERATION_FAILED,
"%s", _("Resuming after dump failed"));
break;
default:
goto cleanup;
}
endjob:
qemuDomainObjEndAsyncJob(driver, vm);
cleanup:
virObjectUnref(cfg);
VIR_FREE(dumpfile);
}
static int
doCoreDumpToAutoDumpPath(virQEMUDriverPtr driver,
virDomainObjPtr vm,
unsigned int flags)
{
int ret = -1;
virQEMUDriverConfigPtr cfg = virQEMUDriverGetConfig(driver);
char *dumpfile = getAutoDumpPath(driver, vm);
if (!dumpfile)
goto cleanup;
flags |= cfg->autoDumpBypassCache ? VIR_DUMP_BYPASS_CACHE: 0;
if ((ret = doCoreDump(driver, vm, dumpfile, flags,
VIR_DOMAIN_CORE_DUMP_FORMAT_RAW)) < 0)
virReportError(VIR_ERR_OPERATION_FAILED,
"%s", _("Dump failed"));
cleanup:
VIR_FREE(dumpfile);
virObjectUnref(cfg);
return ret;
}
static void
qemuProcessGuestPanicEventInfo(virQEMUDriverPtr driver,
virDomainObjPtr vm,
qemuMonitorEventPanicInfoPtr info)
{
char *msg = qemuMonitorGuestPanicEventInfoFormatMsg(info);
char *timestamp = virTimeStringNow();
if (msg && timestamp)
qemuDomainLogAppendMessage(driver, vm, "%s: panic %s\n", timestamp, msg);
VIR_FREE(timestamp);
VIR_FREE(msg);
}
static void
processGuestPanicEvent(virQEMUDriverPtr driver,
virDomainObjPtr vm,
int action,
qemuMonitorEventPanicInfoPtr info)
{
qemuDomainObjPrivatePtr priv = vm->privateData;
virObjectEventPtr event = NULL;
virQEMUDriverConfigPtr cfg = virQEMUDriverGetConfig(driver);
bool removeInactive = false;
unsigned long flags = VIR_DUMP_MEMORY_ONLY;
if (qemuDomainObjBeginAsyncJob(driver, vm, QEMU_ASYNC_JOB_DUMP,
VIR_DOMAIN_JOB_OPERATION_DUMP, flags) < 0)
goto cleanup;
if (!virDomainObjIsActive(vm)) {
VIR_DEBUG("Ignoring GUEST_PANICKED event from inactive domain %s",
vm->def->name);
goto endjob;
}
if (info)
qemuProcessGuestPanicEventInfo(driver, vm, info);
virDomainObjSetState(vm, VIR_DOMAIN_CRASHED, VIR_DOMAIN_CRASHED_PANICKED);
event = virDomainEventLifecycleNewFromObj(vm,
VIR_DOMAIN_EVENT_CRASHED,
VIR_DOMAIN_EVENT_CRASHED_PANICKED);
virObjectEventStateQueue(driver->domainEventState, event);
if (virDomainSaveStatus(driver->xmlopt, cfg->stateDir, vm, driver->caps) < 0) {
VIR_WARN("Unable to save status on vm %s after state change",
vm->def->name);
}
if (virDomainLockProcessPause(driver->lockManager, vm, &priv->lockState) < 0)
VIR_WARN("Unable to release lease on %s", vm->def->name);
VIR_DEBUG("Preserving lock state '%s'", NULLSTR(priv->lockState));
switch (action) {
case VIR_DOMAIN_LIFECYCLE_ACTION_COREDUMP_DESTROY:
if (doCoreDumpToAutoDumpPath(driver, vm, flags) < 0)
goto endjob;
ATTRIBUTE_FALLTHROUGH;
case VIR_DOMAIN_LIFECYCLE_ACTION_DESTROY:
qemuProcessStop(driver, vm, VIR_DOMAIN_SHUTOFF_CRASHED,
QEMU_ASYNC_JOB_DUMP, 0);
event = virDomainEventLifecycleNewFromObj(vm,
VIR_DOMAIN_EVENT_STOPPED,
VIR_DOMAIN_EVENT_STOPPED_CRASHED);
virObjectEventStateQueue(driver->domainEventState, event);
virDomainAuditStop(vm, "destroyed");
removeInactive = true;
break;
case VIR_DOMAIN_LIFECYCLE_ACTION_COREDUMP_RESTART:
if (doCoreDumpToAutoDumpPath(driver, vm, flags) < 0)
goto endjob;
ATTRIBUTE_FALLTHROUGH;
case VIR_DOMAIN_LIFECYCLE_ACTION_RESTART:
qemuDomainSetFakeReboot(driver, vm, true);
qemuProcessShutdownOrReboot(driver, vm);
break;
case VIR_DOMAIN_LIFECYCLE_ACTION_PRESERVE:
break;
default:
break;
}
endjob:
qemuDomainObjEndAsyncJob(driver, vm);
if (removeInactive)
qemuDomainRemoveInactiveJob(driver, vm);
cleanup:
virObjectUnref(cfg);
}
static void
processDeviceDeletedEvent(virQEMUDriverPtr driver,
virDomainObjPtr vm,
const char *devAlias)
{
virQEMUDriverConfigPtr cfg = virQEMUDriverGetConfig(driver);
virDomainDeviceDef dev;
VIR_DEBUG("Removing device %s from domain %p %s",
devAlias, vm, vm->def->name);
if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_MODIFY) < 0)
goto cleanup;
if (!virDomainObjIsActive(vm)) {
VIR_DEBUG("Domain is not running");
goto endjob;
}
if (STRPREFIX(devAlias, "vcpu")) {
qemuDomainRemoveVcpuAlias(driver, vm, devAlias);
} else {
if (virDomainDefFindDevice(vm->def, devAlias, &dev, true) < 0)
goto endjob;
if (qemuDomainRemoveDevice(driver, vm, &dev) < 0)
goto endjob;
}
if (virDomainSaveStatus(driver->xmlopt, cfg->stateDir, vm, driver->caps) < 0)
VIR_WARN("unable to save domain status after removing device %s",
devAlias);
endjob:
qemuDomainObjEndJob(driver, vm);
cleanup:
virObjectUnref(cfg);
}
static void
syncNicRxFilterMacAddr(char *ifname, virNetDevRxFilterPtr guestFilter,
virNetDevRxFilterPtr hostFilter)
{
char newMacStr[VIR_MAC_STRING_BUFLEN];
if (virMacAddrCmp(&hostFilter->mac, &guestFilter->mac)) {
virMacAddrFormat(&guestFilter->mac, newMacStr);
/* set new MAC address from guest to associated macvtap device */
if (virNetDevSetMAC(ifname, &guestFilter->mac) < 0) {
VIR_WARN("Couldn't set new MAC address %s to device %s "
"while responding to NIC_RX_FILTER_CHANGED",
newMacStr, ifname);
} else {
VIR_DEBUG("device %s MAC address set to %s", ifname, newMacStr);
}
}
}
static void
syncNicRxFilterGuestMulticast(char *ifname, virNetDevRxFilterPtr guestFilter,
virNetDevRxFilterPtr hostFilter)
{
size_t i, j;
bool found;
char macstr[VIR_MAC_STRING_BUFLEN];
for (i = 0; i < guestFilter->multicast.nTable; i++) {
found = false;
for (j = 0; j < hostFilter->multicast.nTable; j++) {
if (virMacAddrCmp(&guestFilter->multicast.table[i],
&hostFilter->multicast.table[j]) == 0) {
found = true;
break;
}
}
if (!found) {
virMacAddrFormat(&guestFilter->multicast.table[i], macstr);
if (virNetDevAddMulti(ifname, &guestFilter->multicast.table[i]) < 0) {
VIR_WARN("Couldn't add new multicast MAC address %s to "
"device %s while responding to NIC_RX_FILTER_CHANGED",
macstr, ifname);
} else {
VIR_DEBUG("Added multicast MAC %s to %s interface",
macstr, ifname);
}
}
}
}
static void
syncNicRxFilterHostMulticast(char *ifname, virNetDevRxFilterPtr guestFilter,
virNetDevRxFilterPtr hostFilter)
{
size_t i, j;
bool found;
char macstr[VIR_MAC_STRING_BUFLEN];
for (i = 0; i < hostFilter->multicast.nTable; i++) {
found = false;
for (j = 0; j < guestFilter->multicast.nTable; j++) {
if (virMacAddrCmp(&hostFilter->multicast.table[i],
&guestFilter->multicast.table[j]) == 0) {
found = true;
break;
}
}
if (!found) {
virMacAddrFormat(&hostFilter->multicast.table[i], macstr);
if (virNetDevDelMulti(ifname, &hostFilter->multicast.table[i]) < 0) {
VIR_WARN("Couldn't delete multicast MAC address %s from "
"device %s while responding to NIC_RX_FILTER_CHANGED",
macstr, ifname);
} else {
VIR_DEBUG("Deleted multicast MAC %s from %s interface",
macstr, ifname);
}
}
}
}
static void
syncNicRxFilterPromiscMode(char *ifname,
virNetDevRxFilterPtr guestFilter,
virNetDevRxFilterPtr hostFilter)
{
bool promisc;
bool setpromisc = false;
/* Set macvtap promisc mode to true if the guest has vlans defined */
/* or synchronize the macvtap promisc mode if different from guest */
if (guestFilter->vlan.nTable > 0) {
if (!hostFilter->promiscuous) {
setpromisc = true;
promisc = true;
}
} else if (hostFilter->promiscuous != guestFilter->promiscuous) {
setpromisc = true;
promisc = guestFilter->promiscuous;
}
if (setpromisc) {
if (virNetDevSetPromiscuous(ifname, promisc) < 0) {
VIR_WARN("Couldn't set PROMISC flag to %s for device %s "
"while responding to NIC_RX_FILTER_CHANGED",
promisc ? "true" : "false", ifname);
}
}
}
static void
syncNicRxFilterMultiMode(char *ifname, virNetDevRxFilterPtr guestFilter,
virNetDevRxFilterPtr hostFilter)
{
if (hostFilter->multicast.mode != guestFilter->multicast.mode ||
(guestFilter->multicast.overflow &&
guestFilter->multicast.mode == VIR_NETDEV_RX_FILTER_MODE_NORMAL)) {
switch (guestFilter->multicast.mode) {
case VIR_NETDEV_RX_FILTER_MODE_ALL:
if (virNetDevSetRcvAllMulti(ifname, true) < 0) {
VIR_WARN("Couldn't set allmulticast flag to 'on' for "
"device %s while responding to "
"NIC_RX_FILTER_CHANGED", ifname);
}
break;
case VIR_NETDEV_RX_FILTER_MODE_NORMAL:
if (guestFilter->multicast.overflow &&
(hostFilter->multicast.mode == VIR_NETDEV_RX_FILTER_MODE_ALL)) {
break;
}
if (virNetDevSetRcvMulti(ifname, true) < 0) {
VIR_WARN("Couldn't set multicast flag to 'on' for "
"device %s while responding to "
"NIC_RX_FILTER_CHANGED", ifname);
}
if (virNetDevSetRcvAllMulti(ifname,
guestFilter->multicast.overflow) < 0) {
VIR_WARN("Couldn't set allmulticast flag to '%s' for "
"device %s while responding to "
"NIC_RX_FILTER_CHANGED",
virTristateSwitchTypeToString(virTristateSwitchFromBool(guestFilter->multicast.overflow)),
ifname);
}
break;
case VIR_NETDEV_RX_FILTER_MODE_NONE:
if (virNetDevSetRcvAllMulti(ifname, false) < 0) {
VIR_WARN("Couldn't set allmulticast flag to 'off' for "
"device %s while responding to "
"NIC_RX_FILTER_CHANGED", ifname);
}
if (virNetDevSetRcvMulti(ifname, false) < 0) {
VIR_WARN("Couldn't set multicast flag to 'off' for "
"device %s while responding to "
"NIC_RX_FILTER_CHANGED",
ifname);
}
break;
}
}
}
static void
syncNicRxFilterDeviceOptions(char *ifname, virNetDevRxFilterPtr guestFilter,
virNetDevRxFilterPtr hostFilter)
{
syncNicRxFilterPromiscMode(ifname, guestFilter, hostFilter);
syncNicRxFilterMultiMode(ifname, guestFilter, hostFilter);
}
static void
syncNicRxFilterMulticast(char *ifname,
virNetDevRxFilterPtr guestFilter,
virNetDevRxFilterPtr hostFilter)
{
syncNicRxFilterGuestMulticast(ifname, guestFilter, hostFilter);
syncNicRxFilterHostMulticast(ifname, guestFilter, hostFilter);
}
static void
processNicRxFilterChangedEvent(virQEMUDriverPtr driver,
virDomainObjPtr vm,
const char *devAlias)
{
virQEMUDriverConfigPtr cfg = virQEMUDriverGetConfig(driver);
qemuDomainObjPrivatePtr priv = vm->privateData;
virDomainDeviceDef dev;
virDomainNetDefPtr def;
virNetDevRxFilterPtr guestFilter = NULL;
virNetDevRxFilterPtr hostFilter = NULL;
int ret;
VIR_DEBUG("Received NIC_RX_FILTER_CHANGED event for device %s "
"from domain %p %s",
devAlias, vm, vm->def->name);
if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_MODIFY) < 0)
goto cleanup;
if (!virDomainObjIsActive(vm)) {
VIR_DEBUG("Domain is not running");
goto endjob;
}
if (virDomainDefFindDevice(vm->def, devAlias, &dev, true) < 0) {
VIR_WARN("NIC_RX_FILTER_CHANGED event received for "
"non-existent device %s in domain %s",
devAlias, vm->def->name);
goto endjob;
}
if (dev.type != VIR_DOMAIN_DEVICE_NET) {
VIR_WARN("NIC_RX_FILTER_CHANGED event received for "
"non-network device %s in domain %s",
devAlias, vm->def->name);
goto endjob;
}
def = dev.data.net;
if (!virDomainNetGetActualTrustGuestRxFilters(def)) {
VIR_DEBUG("ignore NIC_RX_FILTER_CHANGED event for network "
"device %s in domain %s",
def->info.alias, vm->def->name);
/* not sending "query-rx-filter" will also suppress any
* further NIC_RX_FILTER_CHANGED events for this device
*/
goto endjob;
}
/* handle the event - send query-rx-filter and respond to it. */
VIR_DEBUG("process NIC_RX_FILTER_CHANGED event for network "
"device %s in domain %s", def->info.alias, vm->def->name);
qemuDomainObjEnterMonitor(driver, vm);
ret = qemuMonitorQueryRxFilter(priv->mon, devAlias, &guestFilter);
if (qemuDomainObjExitMonitor(driver, vm) < 0)
ret = -1;
if (ret < 0)
goto endjob;
if (virDomainNetGetActualType(def) == VIR_DOMAIN_NET_TYPE_DIRECT) {
if (virNetDevGetRxFilter(def->ifname, &hostFilter)) {
VIR_WARN("Couldn't get current RX filter for device %s "
"while responding to NIC_RX_FILTER_CHANGED",
def->ifname);
goto endjob;
}
/* For macvtap connections, set the following macvtap network device
* attributes to match those of the guest network device:
* - MAC address
* - Multicast MAC address table
* - Device options:
* - PROMISC
* - MULTICAST
* - ALLMULTI
*/
syncNicRxFilterMacAddr(def->ifname, guestFilter, hostFilter);
syncNicRxFilterMulticast(def->ifname, guestFilter, hostFilter);
syncNicRxFilterDeviceOptions(def->ifname, guestFilter, hostFilter);
}
if (virDomainNetGetActualType(def) == VIR_DOMAIN_NET_TYPE_NETWORK) {
const char *brname = virDomainNetGetActualBridgeName(def);
/* For libivrt network connections, set the following TUN/TAP network
* device attributes to match those of the guest network device:
* - QoS filters (which are based on MAC address)
*/
if (virDomainNetGetActualBandwidth(def) &&
def->data.network.actual &&
virNetDevBandwidthUpdateFilter(brname, &guestFilter->mac,
def->data.network.actual->class_id) < 0)
goto endjob;
}
endjob:
qemuDomainObjEndJob(driver, vm);
cleanup:
virNetDevRxFilterFree(hostFilter);
virNetDevRxFilterFree(guestFilter);
virObjectUnref(cfg);
}
static void
processSerialChangedEvent(virQEMUDriverPtr driver,
virDomainObjPtr vm,
const char *devAlias,
bool connected)
{
virQEMUDriverConfigPtr cfg = virQEMUDriverGetConfig(driver);
virDomainChrDeviceState newstate;
virObjectEventPtr event = NULL;
virDomainDeviceDef dev;
qemuDomainObjPrivatePtr priv = vm->privateData;
if (connected)
newstate = VIR_DOMAIN_CHR_DEVICE_STATE_CONNECTED;
else
newstate = VIR_DOMAIN_CHR_DEVICE_STATE_DISCONNECTED;
VIR_DEBUG("Changing serial port state %s in domain %p %s",
devAlias, vm, vm->def->name);
if (newstate == VIR_DOMAIN_CHR_DEVICE_STATE_DISCONNECTED &&
virDomainObjIsActive(vm) && priv->agent) {
/* peek into the domain definition to find the channel */
if (virDomainDefFindDevice(vm->def, devAlias, &dev, true) == 0 &&
dev.type == VIR_DOMAIN_DEVICE_CHR &&
dev.data.chr->deviceType == VIR_DOMAIN_CHR_DEVICE_TYPE_CHANNEL &&
dev.data.chr->targetType == VIR_DOMAIN_CHR_CHANNEL_TARGET_TYPE_VIRTIO &&
STREQ_NULLABLE(dev.data.chr->target.name, "org.qemu.guest_agent.0"))
/* Close agent monitor early, so that other threads
* waiting for the agent to reply can finish and our
* job we acquire below can succeed. */
qemuAgentNotifyClose(priv->agent);
/* now discard the data, since it may possibly change once we unlock
* while entering the job */
memset(&dev, 0, sizeof(dev));
}
if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_MODIFY) < 0)
goto cleanup;
if (!virDomainObjIsActive(vm)) {
VIR_DEBUG("Domain is not running");
goto endjob;
}
if (virDomainDefFindDevice(vm->def, devAlias, &dev, true) < 0)
goto endjob;
/* we care only about certain devices */
if (dev.type != VIR_DOMAIN_DEVICE_CHR ||
dev.data.chr->deviceType != VIR_DOMAIN_CHR_DEVICE_TYPE_CHANNEL ||
dev.data.chr->targetType != VIR_DOMAIN_CHR_CHANNEL_TARGET_TYPE_VIRTIO)
goto endjob;
dev.data.chr->state = newstate;
if (virDomainSaveStatus(driver->xmlopt, cfg->stateDir, vm, driver->caps) < 0)
VIR_WARN("unable to save status of domain %s after updating state of "
"channel %s", vm->def->name, devAlias);
if (STREQ_NULLABLE(dev.data.chr->target.name, "org.qemu.guest_agent.0")) {
if (newstate == VIR_DOMAIN_CHR_DEVICE_STATE_CONNECTED) {
if (qemuConnectAgent(driver, vm) < 0)
goto endjob;
} else {
if (priv->agent) {
qemuAgentClose(priv->agent);
priv->agent = NULL;
}
priv->agentError = false;
}
event = virDomainEventAgentLifecycleNewFromObj(vm, newstate,
VIR_CONNECT_DOMAIN_EVENT_AGENT_LIFECYCLE_REASON_CHANNEL);
virObjectEventStateQueue(driver->domainEventState, event);
}
endjob:
qemuDomainObjEndJob(driver, vm);
cleanup:
virObjectUnref(cfg);
}
static void
processBlockJobEvent(virQEMUDriverPtr driver,
virDomainObjPtr vm,
const char *diskAlias,
int type,
int status)
{
virDomainDiskDefPtr disk;
qemuBlockJobDataPtr job = NULL;
if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_MODIFY) < 0)
return;
if (!virDomainObjIsActive(vm)) {
VIR_DEBUG("Domain is not running");
goto endjob;
}
if (!(disk = qemuProcessFindDomainDiskByAliasOrQOM(vm, diskAlias, NULL))) {
VIR_DEBUG("disk %s not found", diskAlias);
goto endjob;
}
if (!(job = qemuBlockJobDiskGetJob(disk))) {
if (!(job = qemuBlockJobDiskNew(disk, type)))
goto endjob;
qemuBlockJobStarted(job);
}
job->newstate = status;
qemuBlockJobUpdateDisk(vm, QEMU_ASYNC_JOB_NONE, disk);
endjob:
qemuBlockJobStartupFinalize(job);
qemuDomainObjEndJob(driver, vm);
}
static void
processMonitorEOFEvent(virQEMUDriverPtr driver,
virDomainObjPtr vm)
{
qemuDomainObjPrivatePtr priv = vm->privateData;
int eventReason = VIR_DOMAIN_EVENT_STOPPED_SHUTDOWN;
int stopReason = VIR_DOMAIN_SHUTOFF_SHUTDOWN;
const char *auditReason = "shutdown";
unsigned int stopFlags = 0;
virObjectEventPtr event = NULL;
if (qemuProcessBeginStopJob(driver, vm, QEMU_JOB_DESTROY, true) < 0)
return;
if (!virDomainObjIsActive(vm)) {
VIR_DEBUG("Domain %p '%s' is not active, ignoring EOF",
vm, vm->def->name);
goto endjob;
}
if (priv->monJSON &&
virDomainObjGetState(vm, NULL) != VIR_DOMAIN_SHUTDOWN) {
VIR_DEBUG("Monitor connection to '%s' closed without SHUTDOWN event; "
"assuming the domain crashed", vm->def->name);
eventReason = VIR_DOMAIN_EVENT_STOPPED_FAILED;
stopReason = VIR_DOMAIN_SHUTOFF_CRASHED;
auditReason = "failed";
}
if (priv->job.asyncJob == QEMU_ASYNC_JOB_MIGRATION_IN) {
stopFlags |= VIR_QEMU_PROCESS_STOP_MIGRATED;
qemuMigrationDstErrorSave(driver, vm->def->name,
qemuMonitorLastError(priv->mon));
}
event = virDomainEventLifecycleNewFromObj(vm, VIR_DOMAIN_EVENT_STOPPED,
eventReason);
qemuProcessStop(driver, vm, stopReason, QEMU_ASYNC_JOB_NONE, stopFlags);
virDomainAuditStop(vm, auditReason);
virObjectEventStateQueue(driver->domainEventState, event);
endjob:
qemuDomainRemoveInactive(driver, vm);
qemuDomainObjEndJob(driver, vm);
}
static void
processPRDisconnectEvent(virDomainObjPtr vm)
{
qemuDomainObjPrivatePtr priv = vm->privateData;
if (!virDomainObjIsActive(vm))
return;
if (!priv->prDaemonRunning &&
virDomainDefHasManagedPR(vm->def))
qemuProcessStartManagedPRDaemon(vm);
}
static void
processRdmaGidStatusChangedEvent(virDomainObjPtr vm,
qemuMonitorRdmaGidStatusPtr info)
{
unsigned int prefix_len;
virSocketAddr addr;
VIR_AUTOFREE(char *) addrStr = NULL;
int rc;
if (!virDomainObjIsActive(vm))
return;
VIR_DEBUG("netdev=%s, gid_status=%d, subnet_prefix=0x%llx, interface_id=0x%llx",
info->netdev, info->gid_status, info->subnet_prefix,
info->interface_id);
if (info->subnet_prefix) {
uint32_t ipv6[4] = {0};
prefix_len = 64;
memcpy(&ipv6[0], &info->subnet_prefix, sizeof(info->subnet_prefix));
memcpy(&ipv6[2], &info->interface_id, sizeof(info->interface_id));
virSocketAddrSetIPv6AddrNetOrder(&addr, ipv6);
} else {
prefix_len = 24;
virSocketAddrSetIPv4AddrNetOrder(&addr, info->interface_id >> 32);
}
if (!(addrStr = virSocketAddrFormat(&addr)))
return;
if (info->gid_status) {
VIR_DEBUG("Adding %s to %s", addrStr, info->netdev);
rc = virNetDevIPAddrAdd(info->netdev, &addr, NULL, prefix_len);
} else {
VIR_DEBUG("Removing %s from %s", addrStr, info->netdev);
rc = virNetDevIPAddrDel(info->netdev, &addr, prefix_len);
}
if (rc < 0)
VIR_WARN("Fail to update address %s to %s", addrStr, info->netdev);
}
static void qemuProcessEventHandler(void *data, void *opaque)
{
struct qemuProcessEvent *processEvent = data;
virDomainObjPtr vm = processEvent->vm;
virQEMUDriverPtr driver = opaque;
VIR_DEBUG("vm=%p, event=%d", vm, processEvent->eventType);
virObjectLock(vm);
switch (processEvent->eventType) {
case QEMU_PROCESS_EVENT_WATCHDOG:
processWatchdogEvent(driver, vm, processEvent->action);
break;
case QEMU_PROCESS_EVENT_GUESTPANIC:
processGuestPanicEvent(driver, vm, processEvent->action,
processEvent->data);
break;
case QEMU_PROCESS_EVENT_DEVICE_DELETED:
processDeviceDeletedEvent(driver, vm, processEvent->data);
break;
case QEMU_PROCESS_EVENT_NIC_RX_FILTER_CHANGED:
processNicRxFilterChangedEvent(driver, vm, processEvent->data);
break;
case QEMU_PROCESS_EVENT_SERIAL_CHANGED:
processSerialChangedEvent(driver, vm, processEvent->data,
processEvent->action);
break;
case QEMU_PROCESS_EVENT_BLOCK_JOB:
processBlockJobEvent(driver, vm,
processEvent->data,
processEvent->action,
processEvent->status);
break;
case QEMU_PROCESS_EVENT_MONITOR_EOF:
processMonitorEOFEvent(driver, vm);
break;
case QEMU_PROCESS_EVENT_PR_DISCONNECT:
processPRDisconnectEvent(vm);
break;
case QEMU_PROCESS_EVENT_RDMA_GID_STATUS_CHANGED:
processRdmaGidStatusChangedEvent(vm, processEvent->data);
break;
case QEMU_PROCESS_EVENT_LAST:
break;
}
virDomainObjEndAPI(&vm);
qemuProcessEventFree(processEvent);
}
static int
qemuDomainSetVcpusAgent(virDomainObjPtr vm,
unsigned int nvcpus)
{
qemuAgentCPUInfoPtr cpuinfo = NULL;
qemuAgentPtr agent;
int ncpuinfo;
int ret = -1;
if (!qemuDomainAgentAvailable(vm, true))
goto cleanup;
if (nvcpus > virDomainDefGetVcpus(vm->def)) {
virReportError(VIR_ERR_INVALID_ARG,
_("requested vcpu count is greater than the count "
"of enabled vcpus in the domain: %d > %d"),
nvcpus, virDomainDefGetVcpus(vm->def));
goto cleanup;
}
agent = qemuDomainObjEnterAgent(vm);
ncpuinfo = qemuAgentGetVCPUs(agent, &cpuinfo);
qemuDomainObjExitAgent(vm, agent);
agent = NULL;
if (ncpuinfo < 0)
goto cleanup;
if (qemuAgentUpdateCPUInfo(nvcpus, cpuinfo, ncpuinfo) < 0)
goto cleanup;
if (!qemuDomainAgentAvailable(vm, true))
goto cleanup;
agent = qemuDomainObjEnterAgent(vm);
ret = qemuAgentSetVCPUs(agent, cpuinfo, ncpuinfo);
qemuDomainObjExitAgent(vm, agent);
cleanup:
VIR_FREE(cpuinfo);
return ret;
}
static int
qemuDomainSetVcpusMax(virQEMUDriverPtr driver,
virDomainDefPtr def,
virDomainDefPtr persistentDef,
unsigned int nvcpus)
{
virQEMUDriverConfigPtr cfg = virQEMUDriverGetConfig(driver);
unsigned int topologycpus;
int ret = -1;
if (def) {
virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s",
_("maximum vcpu count of a live domain can't be modified"));
goto cleanup;
}
if (virDomainNumaGetCPUCountTotal(persistentDef->numa) > nvcpus) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("Number of CPUs in exceeds the desired "
"maximum vcpu count"));
goto cleanup;
}
if (virDomainDefGetVcpusTopology(persistentDef, &topologycpus) == 0 &&
nvcpus != topologycpus) {
/* allow setting a valid vcpu count for the topology so an invalid
* setting may be corrected via this API */
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("CPU topology doesn't match the desired vcpu count"));
goto cleanup;
}
/* ordering information may become invalid, thus clear it */
virDomainDefVcpuOrderClear(persistentDef);
if (virDomainDefSetVcpusMax(persistentDef, nvcpus, driver->xmlopt) < 0)
goto cleanup;
if (virDomainSaveConfig(cfg->configDir, driver->caps, persistentDef) < 0)
goto cleanup;
ret = 0;
cleanup:
virObjectUnref(cfg);
return ret;
}
static int
qemuDomainSetVcpusFlags(virDomainPtr dom,
unsigned int nvcpus,
unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
virDomainObjPtr vm = NULL;
virDomainDefPtr def;
virDomainDefPtr persistentDef;
bool hotpluggable = !!(flags & VIR_DOMAIN_VCPU_HOTPLUGGABLE);
bool useAgent = !!(flags & VIR_DOMAIN_VCPU_GUEST);
qemuDomainJob job = QEMU_JOB_NONE;
qemuDomainAgentJob agentJob = QEMU_AGENT_JOB_NONE;
int ret = -1;
virCheckFlags(VIR_DOMAIN_AFFECT_LIVE |
VIR_DOMAIN_AFFECT_CONFIG |
VIR_DOMAIN_VCPU_MAXIMUM |
VIR_DOMAIN_VCPU_GUEST |
VIR_DOMAIN_VCPU_HOTPLUGGABLE, -1);
if (!(vm = qemuDomObjFromDomain(dom)))
goto cleanup;
if (virDomainSetVcpusFlagsEnsureACL(dom->conn, vm->def, flags) < 0)
goto cleanup;
if (useAgent)
agentJob = QEMU_AGENT_JOB_MODIFY;
else
job = QEMU_JOB_MODIFY;
if (qemuDomainObjBeginJobWithAgent(driver, vm, job, agentJob) < 0)
goto cleanup;
if (virDomainObjGetDefs(vm, flags, &def, &persistentDef) < 0)
goto endjob;
if (useAgent)
ret = qemuDomainSetVcpusAgent(vm, nvcpus);
else if (flags & VIR_DOMAIN_VCPU_MAXIMUM)
ret = qemuDomainSetVcpusMax(driver, def, persistentDef, nvcpus);
else
ret = qemuDomainSetVcpusInternal(driver, vm, def, persistentDef,
nvcpus, hotpluggable);
endjob:
if (agentJob)
qemuDomainObjEndAgentJob(vm);
else
qemuDomainObjEndJob(driver, vm);
cleanup:
virDomainObjEndAPI(&vm);
return ret;
}
static int
qemuDomainSetVcpus(virDomainPtr dom, unsigned int nvcpus)
{
return qemuDomainSetVcpusFlags(dom, nvcpus, VIR_DOMAIN_AFFECT_LIVE);
}
static int
qemuDomainPinVcpuLive(virDomainObjPtr vm,
virDomainDefPtr def,
int vcpu,
virQEMUDriverPtr driver,
virQEMUDriverConfigPtr cfg,
virBitmapPtr cpumap)
{
virBitmapPtr tmpmap = NULL;
virDomainVcpuDefPtr vcpuinfo;
qemuDomainObjPrivatePtr priv = vm->privateData;
virCgroupPtr cgroup_vcpu = NULL;
char *str = NULL;
virObjectEventPtr event = NULL;
char paramField[VIR_TYPED_PARAM_FIELD_LENGTH] = "";
virTypedParameterPtr eventParams = NULL;
int eventNparams = 0;
int eventMaxparams = 0;
int ret = -1;
if (!qemuDomainHasVcpuPids(vm)) {
virReportError(VIR_ERR_OPERATION_INVALID,
"%s", _("cpu affinity is not supported"));
goto cleanup;
}
if (!(vcpuinfo = virDomainDefGetVcpu(def, vcpu))) {
virReportError(VIR_ERR_INVALID_ARG,
_("vcpu %d is out of range of live cpu count %d"),
vcpu, virDomainDefGetVcpusMax(def));
goto cleanup;
}
if (!(tmpmap = virBitmapNewCopy(cpumap)))
goto cleanup;
if (!(str = virBitmapFormat(cpumap)))
goto cleanup;
if (vcpuinfo->online) {
/* Configure the corresponding cpuset cgroup before set affinity. */
if (virCgroupHasController(priv->cgroup, VIR_CGROUP_CONTROLLER_CPUSET)) {
if (virCgroupNewThread(priv->cgroup, VIR_CGROUP_THREAD_VCPU, vcpu,
false, &cgroup_vcpu) < 0)
goto cleanup;
if (qemuSetupCgroupCpusetCpus(cgroup_vcpu, cpumap) < 0)
goto cleanup;
}
if (virProcessSetAffinity(qemuDomainGetVcpuPid(vm, vcpu), cpumap) < 0)
goto cleanup;
}
virBitmapFree(vcpuinfo->cpumask);
vcpuinfo->cpumask = tmpmap;
tmpmap = NULL;
if (virDomainSaveStatus(driver->xmlopt, cfg->stateDir, vm, driver->caps) < 0)
goto cleanup;
if (snprintf(paramField, VIR_TYPED_PARAM_FIELD_LENGTH,
VIR_DOMAIN_TUNABLE_CPU_VCPUPIN, vcpu) < 0) {
goto cleanup;
}
if (virTypedParamsAddString(&eventParams, &eventNparams,
&eventMaxparams, paramField, str) < 0)
goto cleanup;
event = virDomainEventTunableNewFromObj(vm, eventParams, eventNparams);
ret = 0;
cleanup:
virBitmapFree(tmpmap);
virCgroupFree(&cgroup_vcpu);
VIR_FREE(str);
virObjectEventStateQueue(driver->domainEventState, event);
return ret;
}
static int
qemuDomainPinVcpuFlags(virDomainPtr dom,
unsigned int vcpu,
unsigned char *cpumap,
int maplen,
unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
virDomainObjPtr vm;
virDomainDefPtr def;
virDomainDefPtr persistentDef;
int ret = -1;
virBitmapPtr pcpumap = NULL;
virDomainVcpuDefPtr vcpuinfo = NULL;
virQEMUDriverConfigPtr cfg = NULL;
virCheckFlags(VIR_DOMAIN_AFFECT_LIVE |
VIR_DOMAIN_AFFECT_CONFIG, -1);
cfg = virQEMUDriverGetConfig(driver);
if (!(vm = qemuDomObjFromDomain(dom)))
goto cleanup;
if (virDomainPinVcpuFlagsEnsureACL(dom->conn, vm->def, flags) < 0)
goto cleanup;
if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_MODIFY) < 0)
goto cleanup;
if (virDomainObjGetDefs(vm, flags, &def, &persistentDef) < 0)
goto endjob;
if ((def && def->virtType == VIR_DOMAIN_VIRT_QEMU) ||
(persistentDef && persistentDef->virtType == VIR_DOMAIN_VIRT_QEMU)) {
virReportError(VIR_ERR_OPERATION_FAILED, "%s",
_("Virt type 'qemu' does not support vCPU pinning"));
goto endjob;
}
if (persistentDef &&
!(vcpuinfo = virDomainDefGetVcpu(persistentDef, vcpu))) {
virReportError(VIR_ERR_INVALID_ARG,
_("vcpu %d is out of range of persistent cpu count %d"),
vcpu, virDomainDefGetVcpus(persistentDef));
goto endjob;
}
if (!(pcpumap = virBitmapNewData(cpumap, maplen)))
goto endjob;
if (virBitmapIsAllClear(pcpumap)) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("Empty cpu list for pinning"));
goto endjob;
}
if (def &&
qemuDomainPinVcpuLive(vm, def, vcpu, driver, cfg, pcpumap) < 0)
goto endjob;
if (persistentDef) {
virBitmapFree(vcpuinfo->cpumask);
vcpuinfo->cpumask = pcpumap;
pcpumap = NULL;
ret = virDomainSaveConfig(cfg->configDir, driver->caps, persistentDef);
goto endjob;
}
ret = 0;
endjob:
qemuDomainObjEndJob(driver, vm);
cleanup:
virDomainObjEndAPI(&vm);
virBitmapFree(pcpumap);
virObjectUnref(cfg);
return ret;
}
static int
qemuDomainPinVcpu(virDomainPtr dom,
unsigned int vcpu,
unsigned char *cpumap,
int maplen)
{
return qemuDomainPinVcpuFlags(dom, vcpu, cpumap, maplen,
VIR_DOMAIN_AFFECT_LIVE);
}
static int
qemuDomainGetVcpuPinInfo(virDomainPtr dom,
int ncpumaps,
unsigned char *cpumaps,
int maplen,
unsigned int flags)
{
virDomainObjPtr vm = NULL;
virDomainDefPtr def;
bool live;
int ret = -1;
virBitmapPtr autoCpuset = NULL;
virCheckFlags(VIR_DOMAIN_AFFECT_LIVE |
VIR_DOMAIN_AFFECT_CONFIG, -1);
if (!(vm = qemuDomObjFromDomain(dom)))
goto cleanup;
if (virDomainGetVcpuPinInfoEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
if (!(def = virDomainObjGetOneDefState(vm, flags, &live)))
goto cleanup;
if (live)
autoCpuset = QEMU_DOMAIN_PRIVATE(vm)->autoCpuset;
ret = virDomainDefGetVcpuPinInfoHelper(def, maplen, ncpumaps, cpumaps,
virHostCPUGetCount(), autoCpuset);
cleanup:
virDomainObjEndAPI(&vm);
return ret;
}
static int
qemuDomainPinEmulator(virDomainPtr dom,
unsigned char *cpumap,
int maplen,
unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
virDomainObjPtr vm;
virCgroupPtr cgroup_emulator = NULL;
virDomainDefPtr def;
virDomainDefPtr persistentDef;
int ret = -1;
qemuDomainObjPrivatePtr priv;
virBitmapPtr pcpumap = NULL;
virQEMUDriverConfigPtr cfg = NULL;
virObjectEventPtr event = NULL;
char *str = NULL;
virTypedParameterPtr eventParams = NULL;
int eventNparams = 0;
int eventMaxparams = 0;
virCheckFlags(VIR_DOMAIN_AFFECT_LIVE |
VIR_DOMAIN_AFFECT_CONFIG, -1);
cfg = virQEMUDriverGetConfig(driver);
if (!(vm = qemuDomObjFromDomain(dom)))
goto cleanup;
if (virDomainPinEmulatorEnsureACL(dom->conn, vm->def, flags) < 0)
goto cleanup;
if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_MODIFY) < 0)
goto cleanup;
if (virDomainObjGetDefs(vm, flags, &def, &persistentDef) < 0)
goto endjob;
priv = vm->privateData;
if (!(pcpumap = virBitmapNewData(cpumap, maplen)))
goto endjob;
if (virBitmapIsAllClear(pcpumap)) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("Empty cpu list for pinning"));
goto endjob;
}
if (def) {
if (virCgroupHasController(priv->cgroup, VIR_CGROUP_CONTROLLER_CPUSET)) {
if (virCgroupNewThread(priv->cgroup, VIR_CGROUP_THREAD_EMULATOR,
0, false, &cgroup_emulator) < 0)
goto endjob;
if (qemuSetupCgroupCpusetCpus(cgroup_emulator, pcpumap) < 0) {
virReportError(VIR_ERR_OPERATION_INVALID, "%s",
_("failed to set cpuset.cpus in cgroup"
" for emulator threads"));
goto endjob;
}
}
if (virProcessSetAffinity(vm->pid, pcpumap) < 0)
goto endjob;
virBitmapFree(def->cputune.emulatorpin);
def->cputune.emulatorpin = NULL;
if (!(def->cputune.emulatorpin = virBitmapNewCopy(pcpumap)))
goto endjob;
if (virDomainSaveStatus(driver->xmlopt, cfg->stateDir, vm, driver->caps) < 0)
goto endjob;
str = virBitmapFormat(pcpumap);
if (virTypedParamsAddString(&eventParams, &eventNparams,
&eventMaxparams,
VIR_DOMAIN_TUNABLE_CPU_EMULATORPIN,
str) < 0)
goto endjob;
event = virDomainEventTunableNewFromDom(dom, eventParams, eventNparams);
}
if (persistentDef) {
virBitmapFree(persistentDef->cputune.emulatorpin);
persistentDef->cputune.emulatorpin = NULL;
if (!(persistentDef->cputune.emulatorpin = virBitmapNewCopy(pcpumap)))
goto endjob;
ret = virDomainSaveConfig(cfg->configDir, driver->caps, persistentDef);
goto endjob;
}
ret = 0;
endjob:
qemuDomainObjEndJob(driver, vm);
cleanup:
if (cgroup_emulator)
virCgroupFree(&cgroup_emulator);
virObjectEventStateQueue(driver->domainEventState, event);
VIR_FREE(str);
virBitmapFree(pcpumap);
virDomainObjEndAPI(&vm);
virObjectUnref(cfg);
return ret;
}
static int
qemuDomainGetEmulatorPinInfo(virDomainPtr dom,
unsigned char *cpumaps,
int maplen,
unsigned int flags)
{
virDomainObjPtr vm = NULL;
virDomainDefPtr def;
bool live;
int ret = -1;
int hostcpus;
virBitmapPtr cpumask = NULL;
virBitmapPtr bitmap = NULL;
virBitmapPtr autoCpuset = NULL;
virCheckFlags(VIR_DOMAIN_AFFECT_LIVE |
VIR_DOMAIN_AFFECT_CONFIG, -1);
if (!(vm = qemuDomObjFromDomain(dom)))
goto cleanup;
if (virDomainGetEmulatorPinInfoEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
if (!(def = virDomainObjGetOneDefState(vm, flags, &live)))
goto cleanup;
if ((hostcpus = virHostCPUGetCount()) < 0)
goto cleanup;
if (live)
autoCpuset = QEMU_DOMAIN_PRIVATE(vm)->autoCpuset;
if (def->cputune.emulatorpin) {
cpumask = def->cputune.emulatorpin;
} else if (def->cpumask) {
cpumask = def->cpumask;
} else if (vm->def->placement_mode == VIR_DOMAIN_CPU_PLACEMENT_MODE_AUTO &&
autoCpuset) {
cpumask = autoCpuset;
} else {
if (!(bitmap = virBitmapNew(hostcpus)))
goto cleanup;
virBitmapSetAll(bitmap);
cpumask = bitmap;
}
virBitmapToDataBuf(cpumask, cpumaps, maplen);
ret = 1;
cleanup:
virDomainObjEndAPI(&vm);
virBitmapFree(bitmap);
return ret;
}
static int
qemuDomainGetVcpus(virDomainPtr dom,
virVcpuInfoPtr info,
int maxinfo,
unsigned char *cpumaps,
int maplen)
{
virDomainObjPtr vm;
int ret = -1;
if (!(vm = qemuDomObjFromDomain(dom)))
goto cleanup;
if (virDomainGetVcpusEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
if (!virDomainObjIsActive(vm)) {
virReportError(VIR_ERR_OPERATION_INVALID, "%s",
_("cannot retrieve vcpu information for inactive domain"));
goto cleanup;
}
ret = qemuDomainHelperGetVcpus(vm, info, NULL, maxinfo, cpumaps, maplen);
cleanup:
virDomainObjEndAPI(&vm);
return ret;
}
static int
qemuDomainGetVcpusFlags(virDomainPtr dom, unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
virDomainObjPtr vm;
virDomainDefPtr def;
int ret = -1;
qemuAgentCPUInfoPtr cpuinfo = NULL;
qemuAgentPtr agent;
int ncpuinfo = -1;
size_t i;
virCheckFlags(VIR_DOMAIN_AFFECT_LIVE |
VIR_DOMAIN_AFFECT_CONFIG |
VIR_DOMAIN_VCPU_MAXIMUM |
VIR_DOMAIN_VCPU_GUEST, -1);
if (!(vm = qemuDomObjFromDomain(dom)))
return -1;
if (virDomainGetVcpusFlagsEnsureACL(dom->conn, vm->def, flags) < 0)
goto cleanup;
if (!(def = virDomainObjGetOneDef(vm, flags)))
goto cleanup;
if (flags & VIR_DOMAIN_VCPU_GUEST) {
if (qemuDomainObjBeginAgentJob(driver, vm, QEMU_AGENT_JOB_QUERY) < 0)
goto cleanup;
if (!virDomainObjIsActive(vm)) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("vCPU count provided by the guest agent can only be "
"requested for live domains"));
goto endjob;
}
if (!qemuDomainAgentAvailable(vm, true))
goto endjob;
agent = qemuDomainObjEnterAgent(vm);
ncpuinfo = qemuAgentGetVCPUs(agent, &cpuinfo);
qemuDomainObjExitAgent(vm, agent);
endjob:
qemuDomainObjEndAgentJob(vm);
if (ncpuinfo < 0)
goto cleanup;
if (flags & VIR_DOMAIN_VCPU_MAXIMUM) {
ret = ncpuinfo;
goto cleanup;
}
/* count the online vcpus */
ret = 0;
for (i = 0; i < ncpuinfo; i++) {
if (cpuinfo[i].online)
ret++;
}
} else {
if (flags & VIR_DOMAIN_VCPU_MAXIMUM)
ret = virDomainDefGetVcpusMax(def);
else
ret = virDomainDefGetVcpus(def);
}
cleanup:
virDomainObjEndAPI(&vm);
VIR_FREE(cpuinfo);
return ret;
}
static int
qemuDomainGetMaxVcpus(virDomainPtr dom)
{
return qemuDomainGetVcpusFlags(dom, (VIR_DOMAIN_AFFECT_LIVE |
VIR_DOMAIN_VCPU_MAXIMUM));
}
static int
qemuDomainGetIOThreadsMon(virQEMUDriverPtr driver,
virDomainObjPtr vm,
qemuMonitorIOThreadInfoPtr **iothreads)
{
qemuDomainObjPrivatePtr priv = vm->privateData;
int niothreads = 0;
qemuDomainObjEnterMonitor(driver, vm);
niothreads = qemuMonitorGetIOThreads(priv->mon, iothreads);
if (qemuDomainObjExitMonitor(driver, vm) < 0 || niothreads < 0)
return -1;
return niothreads;
}
static int
qemuDomainGetIOThreadsLive(virQEMUDriverPtr driver,
virDomainObjPtr vm,
virDomainIOThreadInfoPtr **info)
{
qemuDomainObjPrivatePtr priv;
qemuMonitorIOThreadInfoPtr *iothreads = NULL;
virDomainIOThreadInfoPtr *info_ret = NULL;
int niothreads = 0;
size_t i;
int ret = -1;
if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_QUERY) < 0)
goto cleanup;
if (!virDomainObjIsActive(vm)) {
virReportError(VIR_ERR_OPERATION_INVALID, "%s",
_("cannot list IOThreads for an inactive domain"));
goto endjob;
}
priv = vm->privateData;
if (!virQEMUCapsGet(priv->qemuCaps, QEMU_CAPS_OBJECT_IOTHREAD)) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("IOThreads not supported with this binary"));
goto endjob;
}
if ((niothreads = qemuDomainGetIOThreadsMon(driver, vm, &iothreads)) < 0)
goto endjob;
/* Nothing to do */
if (niothreads == 0) {
ret = 0;
goto endjob;
}
if (VIR_ALLOC_N(info_ret, niothreads) < 0)
goto endjob;
for (i = 0; i < niothreads; i++) {
virBitmapPtr map = NULL;
if (VIR_ALLOC(info_ret[i]) < 0)
goto endjob;
info_ret[i]->iothread_id = iothreads[i]->iothread_id;
if (!(map = virProcessGetAffinity(iothreads[i]->thread_id)))
goto endjob;
if (virBitmapToData(map, &info_ret[i]->cpumap,
&info_ret[i]->cpumaplen) < 0) {
virBitmapFree(map);
goto endjob;
}
virBitmapFree(map);
}
VIR_STEAL_PTR(*info, info_ret);
ret = niothreads;
endjob:
qemuDomainObjEndJob(driver, vm);
cleanup:
if (info_ret) {
for (i = 0; i < niothreads; i++)
virDomainIOThreadInfoFree(info_ret[i]);
VIR_FREE(info_ret);
}
if (iothreads) {
for (i = 0; i < niothreads; i++)
VIR_FREE(iothreads[i]);
VIR_FREE(iothreads);
}
return ret;
}
static int
qemuDomainGetIOThreadsConfig(virDomainDefPtr targetDef,
virDomainIOThreadInfoPtr **info)
{
virDomainIOThreadInfoPtr *info_ret = NULL;
virBitmapPtr bitmap = NULL;
virBitmapPtr cpumask = NULL;
int hostcpus;
size_t i;
int ret = -1;
if (targetDef->niothreadids == 0)
return 0;
if ((hostcpus = virHostCPUGetCount()) < 0)
goto cleanup;
if (VIR_ALLOC_N(info_ret, targetDef->niothreadids) < 0)
goto cleanup;
for (i = 0; i < targetDef->niothreadids; i++) {
if (VIR_ALLOC(info_ret[i]) < 0)
goto cleanup;
/* IOThread ID's are taken from the iothreadids list */
info_ret[i]->iothread_id = targetDef->iothreadids[i]->iothread_id;
cpumask = targetDef->iothreadids[i]->cpumask;
if (!cpumask) {
if (targetDef->cpumask) {
cpumask = targetDef->cpumask;
} else {
if (!(bitmap = virBitmapNew(hostcpus)))
goto cleanup;
virBitmapSetAll(bitmap);
cpumask = bitmap;
}
}
if (virBitmapToData(cpumask, &info_ret[i]->cpumap,
&info_ret[i]->cpumaplen) < 0)
goto cleanup;
virBitmapFree(bitmap);
bitmap = NULL;
}
*info = info_ret;
info_ret = NULL;
ret = targetDef->niothreadids;
cleanup:
if (info_ret) {
for (i = 0; i < targetDef->niothreadids; i++)
virDomainIOThreadInfoFree(info_ret[i]);
VIR_FREE(info_ret);
}
virBitmapFree(bitmap);
return ret;
}
static int
qemuDomainGetIOThreadInfo(virDomainPtr dom,
virDomainIOThreadInfoPtr **info,
unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
virDomainObjPtr vm;
virDomainDefPtr targetDef = NULL;
int ret = -1;
virCheckFlags(VIR_DOMAIN_AFFECT_LIVE |
VIR_DOMAIN_AFFECT_CONFIG, -1);
if (!(vm = qemuDomObjFromDomain(dom)))
goto cleanup;
if (virDomainGetIOThreadInfoEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
if (virDomainObjGetDefs(vm, flags, NULL, &targetDef) < 0)
goto cleanup;
if (!targetDef)
ret = qemuDomainGetIOThreadsLive(driver, vm, info);
else
ret = qemuDomainGetIOThreadsConfig(targetDef, info);
cleanup:
virDomainObjEndAPI(&vm);
return ret;
}
static int
qemuDomainPinIOThread(virDomainPtr dom,
unsigned int iothread_id,
unsigned char *cpumap,
int maplen,
unsigned int flags)
{
int ret = -1;
virQEMUDriverPtr driver = dom->conn->privateData;
virQEMUDriverConfigPtr cfg = NULL;
virDomainObjPtr vm;
virDomainDefPtr def;
virDomainDefPtr persistentDef;
virBitmapPtr pcpumap = NULL;
qemuDomainObjPrivatePtr priv;
virCgroupPtr cgroup_iothread = NULL;
virObjectEventPtr event = NULL;
char paramField[VIR_TYPED_PARAM_FIELD_LENGTH] = "";
char *str = NULL;
virTypedParameterPtr eventParams = NULL;
int eventNparams = 0;
int eventMaxparams = 0;
virCheckFlags(VIR_DOMAIN_AFFECT_LIVE |
VIR_DOMAIN_AFFECT_CONFIG, -1);
cfg = virQEMUDriverGetConfig(driver);
if (!(vm = qemuDomObjFromDomain(dom)))
goto cleanup;
priv = vm->privateData;
if (virDomainPinIOThreadEnsureACL(dom->conn, vm->def, flags) < 0)
goto cleanup;
if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_MODIFY) < 0)
goto cleanup;
if (virDomainObjGetDefs(vm, flags, &def, &persistentDef) < 0)
goto endjob;
if (!(pcpumap = virBitmapNewData(cpumap, maplen)))
goto endjob;
if (virBitmapIsAllClear(pcpumap)) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("Empty iothread cpumap list for pinning"));
goto endjob;
}
if (def) {
virDomainIOThreadIDDefPtr iothrid;
virBitmapPtr cpumask;
if (!(iothrid = virDomainIOThreadIDFind(def, iothread_id))) {
virReportError(VIR_ERR_INVALID_ARG,
_("iothread %d not found"), iothread_id);
goto endjob;
}
if (!(cpumask = virBitmapNewData(cpumap, maplen)))
goto endjob;
virBitmapFree(iothrid->cpumask);
iothrid->cpumask = cpumask;
iothrid->autofill = false;
/* Configure the corresponding cpuset cgroup before set affinity. */
if (virCgroupHasController(priv->cgroup,
VIR_CGROUP_CONTROLLER_CPUSET)) {
if (virCgroupNewThread(priv->cgroup, VIR_CGROUP_THREAD_IOTHREAD,
iothread_id, false, &cgroup_iothread) < 0)
goto endjob;
if (qemuSetupCgroupCpusetCpus(cgroup_iothread, pcpumap) < 0) {
virReportError(VIR_ERR_OPERATION_INVALID,
_("failed to set cpuset.cpus in cgroup"
" for iothread %d"), iothread_id);
goto endjob;
}
}
if (virProcessSetAffinity(iothrid->thread_id, pcpumap) < 0)
goto endjob;
if (virDomainSaveStatus(driver->xmlopt, cfg->stateDir, vm, driver->caps) < 0)
goto endjob;
if (snprintf(paramField, VIR_TYPED_PARAM_FIELD_LENGTH,
VIR_DOMAIN_TUNABLE_CPU_IOTHREADSPIN, iothread_id) < 0) {
goto endjob;
}
str = virBitmapFormat(pcpumap);
if (virTypedParamsAddString(&eventParams, &eventNparams,
&eventMaxparams, paramField, str) < 0)
goto endjob;
event = virDomainEventTunableNewFromDom(dom, eventParams, eventNparams);
}
if (persistentDef) {
virDomainIOThreadIDDefPtr iothrid;
virBitmapPtr cpumask;
if (!(iothrid = virDomainIOThreadIDFind(persistentDef, iothread_id))) {
virReportError(VIR_ERR_INVALID_ARG,
_("iothreadid %d not found"), iothread_id);
goto endjob;
}
if (!(cpumask = virBitmapNewData(cpumap, maplen)))
goto endjob;
virBitmapFree(iothrid->cpumask);
iothrid->cpumask = cpumask;
iothrid->autofill = false;
ret = virDomainSaveConfig(cfg->configDir, driver->caps, persistentDef);
goto endjob;
}
ret = 0;
endjob:
qemuDomainObjEndJob(driver, vm);
cleanup:
if (cgroup_iothread)
virCgroupFree(&cgroup_iothread);
virObjectEventStateQueue(driver->domainEventState, event);
VIR_FREE(str);
virBitmapFree(pcpumap);
virDomainObjEndAPI(&vm);
virObjectUnref(cfg);
return ret;
}
static int
qemuDomainHotplugAddIOThread(virQEMUDriverPtr driver,
virDomainObjPtr vm,
unsigned int iothread_id)
{
qemuDomainObjPrivatePtr priv = vm->privateData;
char *alias = NULL;
size_t idx;
int ret = -1;
unsigned int orig_niothreads = vm->def->niothreadids;
unsigned int exp_niothreads = vm->def->niothreadids;
int new_niothreads = 0;
qemuMonitorIOThreadInfoPtr *new_iothreads = NULL;
virDomainIOThreadIDDefPtr iothrid;
virJSONValuePtr props = NULL;
if (virAsprintf(&alias, "iothread%u", iothread_id) < 0)
return -1;
if (qemuMonitorCreateObjectProps(&props, "iothread", alias, NULL) < 0)
goto cleanup;
qemuDomainObjEnterMonitor(driver, vm);
if (qemuMonitorAddObject(priv->mon, &props, NULL) < 0)
goto exit_monitor;
exp_niothreads++;
/* After hotplugging the IOThreads we need to re-detect the
* IOThreads thread_id's, adjust the cgroups, thread affinity,
* and add the thread_id to the vm->def->iothreadids list.
*/
if ((new_niothreads = qemuMonitorGetIOThreads(priv->mon,
&new_iothreads)) < 0)
goto exit_monitor;
if (qemuDomainObjExitMonitor(driver, vm) < 0)
goto cleanup;
if (new_niothreads != exp_niothreads) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("got wrong number of IOThread ids from QEMU monitor. "
"got %d, wanted %d"),
new_niothreads, exp_niothreads);
goto cleanup;
}
/*
* If we've successfully added an IOThread, find out where we added it
* in the QEMU IOThread list, so we can add it to our iothreadids list
*/
for (idx = 0; idx < new_niothreads; idx++) {
if (new_iothreads[idx]->iothread_id == iothread_id)
break;
}
if (idx == new_niothreads) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("cannot find new IOThread '%u' in QEMU monitor."),
iothread_id);
goto cleanup;
}
if (!(iothrid = virDomainIOThreadIDAdd(vm->def, iothread_id)))
goto cleanup;
iothrid->thread_id = new_iothreads[idx]->thread_id;
if (qemuProcessSetupIOThread(vm, iothrid) < 0)
goto cleanup;
ret = 0;
cleanup:
if (new_iothreads) {
for (idx = 0; idx < new_niothreads; idx++)
VIR_FREE(new_iothreads[idx]);
VIR_FREE(new_iothreads);
}
virDomainAuditIOThread(vm, orig_niothreads, new_niothreads,
"update", ret == 0);
VIR_FREE(alias);
virJSONValueFree(props);
return ret;
exit_monitor:
ignore_value(qemuDomainObjExitMonitor(driver, vm));
goto cleanup;
}
static int
qemuDomainHotplugModIOThread(virQEMUDriverPtr driver,
virDomainObjPtr vm,
qemuMonitorIOThreadInfo iothread)
{
qemuDomainObjPrivatePtr priv = vm->privateData;
int rc;
if (!virQEMUCapsGet(priv->qemuCaps, QEMU_CAPS_IOTHREAD_POLLING)) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("IOThreads polling is not supported for this QEMU"));
return -1;
}
qemuDomainObjEnterMonitor(driver, vm);
rc = qemuMonitorSetIOThread(priv->mon, &iothread);
if (qemuDomainObjExitMonitor(driver, vm) < 0)
return -1;
if (rc < 0)
return -1;
return 0;
}
static int
qemuDomainHotplugDelIOThread(virQEMUDriverPtr driver,
virDomainObjPtr vm,
unsigned int iothread_id)
{
qemuDomainObjPrivatePtr priv = vm->privateData;
size_t idx;
char *alias = NULL;
int rc = -1;
int ret = -1;
unsigned int orig_niothreads = vm->def->niothreadids;
unsigned int exp_niothreads = vm->def->niothreadids;
int new_niothreads = 0;
qemuMonitorIOThreadInfoPtr *new_iothreads = NULL;
if (virAsprintf(&alias, "iothread%u", iothread_id) < 0)
return -1;
qemuDomainObjEnterMonitor(driver, vm);
rc = qemuMonitorDelObject(priv->mon, alias);
exp_niothreads--;
if (rc < 0)
goto exit_monitor;
if ((new_niothreads = qemuMonitorGetIOThreads(priv->mon,
&new_iothreads)) < 0)
goto exit_monitor;
if (qemuDomainObjExitMonitor(driver, vm) < 0)
goto cleanup;
if (new_niothreads != exp_niothreads) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("got wrong number of IOThread ids from QEMU monitor. "
"got %d, wanted %d"),
new_niothreads, exp_niothreads);
goto cleanup;
}
virDomainIOThreadIDDel(vm->def, iothread_id);
if (virCgroupDelThread(priv->cgroup, VIR_CGROUP_THREAD_IOTHREAD,
iothread_id) < 0)
goto cleanup;
ret = 0;
cleanup:
if (new_iothreads) {
for (idx = 0; idx < new_niothreads; idx++)
VIR_FREE(new_iothreads[idx]);
VIR_FREE(new_iothreads);
}
virDomainAuditIOThread(vm, orig_niothreads, new_niothreads,
"update", rc == 0);
VIR_FREE(alias);
return ret;
exit_monitor:
ignore_value(qemuDomainObjExitMonitor(driver, vm));
goto cleanup;
}
static int
qemuDomainAddIOThreadCheck(virDomainDefPtr def,
unsigned int iothread_id)
{
if (virDomainIOThreadIDFind(def, iothread_id)) {
virReportError(VIR_ERR_INVALID_ARG,
_("an IOThread is already using iothread_id '%u'"),
iothread_id);
return -1;
}
return 0;
}
static int
qemuDomainDelIOThreadCheck(virDomainDefPtr def,
unsigned int iothread_id)
{
size_t i;
if (!virDomainIOThreadIDFind(def, iothread_id)) {
virReportError(VIR_ERR_INVALID_ARG,
_("cannot find IOThread '%u' in iothreadids list"),
iothread_id);
return -1;
}
for (i = 0; i < def->ndisks; i++) {
if (def->disks[i]->iothread == iothread_id) {
virReportError(VIR_ERR_INVALID_ARG,
_("cannot remove IOThread %u since it "
"is being used by disk '%s'"),
iothread_id, def->disks[i]->dst);
return -1;
}
}
for (i = 0; i < def->ncontrollers; i++) {
if (def->controllers[i]->iothread == iothread_id) {
virReportError(VIR_ERR_INVALID_ARG,
_("cannot remove IOThread '%u' since it "
"is being used by controller"),
iothread_id);
return -1;
}
}
return 0;
}
/**
* @params: Pointer to params list
* @nparams: Number of params to be parsed
* @iothread: Buffer to store the values
*
* The following is a description of each value parsed:
*
* - "poll-max-ns" for each IOThread is the maximum time in nanoseconds
* to allow each polling interval to occur. A polling interval is a
* period of time allowed for a thread to process data before it returns
* the CPU quantum back to the host. A value set too small will not allow
* the IOThread to run long enough on a CPU to process data. A value set
* too high will consume too much CPU time per IOThread failing to allow
* other threads running on the CPU to get time. A value of 0 (zero) will
* disable the polling.
*
* - "poll-grow" - factor to grow the current polling time when deemed
* necessary. If a 0 (zero) value is provided, QEMU currently doubles
* its polling interval unless the current value is greater than the
* poll-max-ns.
*
* - "poll-shrink" - divisor to reduced the current polling time when deemed
* necessary. If a 0 (zero) value is provided, QEMU resets the polling
* interval to 0 (zero) allowing the poll-grow to manipulate the time.
*
* QEMU keeps track of the polling time elapsed and may grow or shrink the
* its polling interval based upon its heuristic algorithm. It is possible
* that calculations determine that it has found a "sweet spot" and no
* adjustments are made. The polling time value is not available.
*
* Returns 0 on success, -1 on failure with error set.
*/
static int
qemuDomainIOThreadParseParams(virTypedParameterPtr params,
int nparams,
qemuMonitorIOThreadInfoPtr iothread)
{
int rc;
if (virTypedParamsValidate(params, nparams,
VIR_DOMAIN_IOTHREAD_POLL_MAX_NS,
VIR_TYPED_PARAM_ULLONG,
VIR_DOMAIN_IOTHREAD_POLL_GROW,
VIR_TYPED_PARAM_UINT,
VIR_DOMAIN_IOTHREAD_POLL_SHRINK,
VIR_TYPED_PARAM_UINT,
NULL) < 0)
return -1;
if ((rc = virTypedParamsGetULLong(params, nparams,
VIR_DOMAIN_IOTHREAD_POLL_MAX_NS,
&iothread->poll_max_ns)) < 0)
return -1;
if (rc == 1)
iothread->set_poll_max_ns = true;
if ((rc = virTypedParamsGetUInt(params, nparams,
VIR_DOMAIN_IOTHREAD_POLL_GROW,
&iothread->poll_grow)) < 0)
return -1;
if (rc == 1)
iothread->set_poll_grow = true;
if ((rc = virTypedParamsGetUInt(params, nparams,
VIR_DOMAIN_IOTHREAD_POLL_SHRINK,
&iothread->poll_shrink)) < 0)
return -1;
if (rc == 1)
iothread->set_poll_shrink = true;
if (iothread->set_poll_max_ns && iothread->poll_max_ns > INT_MAX) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("poll-max-ns (%llu) must be less than or equal to %d"),
iothread->poll_max_ns, INT_MAX);
return -1;
}
if (iothread->set_poll_grow && iothread->poll_grow > INT_MAX) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("poll-grow (%u) must be less than or equal to %d"),
iothread->poll_grow, INT_MAX);
return -1;
}
if (iothread->set_poll_shrink && iothread->poll_shrink > INT_MAX) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("poll-shrink (%u) must be less than or equal to %d"),
iothread->poll_shrink, INT_MAX);
return -1;
}
return 0;
}
typedef enum {
VIR_DOMAIN_IOTHREAD_ACTION_ADD,
VIR_DOMAIN_IOTHREAD_ACTION_DEL,
VIR_DOMAIN_IOTHREAD_ACTION_MOD,
} virDomainIOThreadAction;
static int
qemuDomainChgIOThread(virQEMUDriverPtr driver,
virDomainObjPtr vm,
qemuMonitorIOThreadInfo iothread,
virDomainIOThreadAction action,
unsigned int flags)
{
virQEMUDriverConfigPtr cfg = NULL;
qemuDomainObjPrivatePtr priv;
virDomainDefPtr def;
virDomainDefPtr persistentDef;
int ret = -1;
cfg = virQEMUDriverGetConfig(driver);
priv = vm->privateData;
if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_MODIFY) < 0)
goto cleanup;
if (virDomainObjGetDefs(vm, flags, &def, &persistentDef) < 0)
goto endjob;
if (def) {
if (!virQEMUCapsGet(priv->qemuCaps, QEMU_CAPS_OBJECT_IOTHREAD)) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("IOThreads not supported with this binary"));
goto endjob;
}
switch (action) {
case VIR_DOMAIN_IOTHREAD_ACTION_ADD:
if (qemuDomainAddIOThreadCheck(def, iothread.iothread_id) < 0)
goto endjob;
if (qemuDomainHotplugAddIOThread(driver, vm, iothread.iothread_id) < 0)
goto endjob;
break;
case VIR_DOMAIN_IOTHREAD_ACTION_DEL:
if (qemuDomainDelIOThreadCheck(def, iothread.iothread_id) < 0)
goto endjob;
if (qemuDomainHotplugDelIOThread(driver, vm, iothread.iothread_id) < 0)
goto endjob;
break;
case VIR_DOMAIN_IOTHREAD_ACTION_MOD:
if (!(virDomainIOThreadIDFind(def, iothread.iothread_id))) {
virReportError(VIR_ERR_INVALID_ARG,
_("cannot find IOThread '%u' in iothreadids"),
iothread.iothread_id);
goto endjob;
}
if (qemuDomainHotplugModIOThread(driver, vm, iothread) < 0)
goto endjob;
break;
}
if (virDomainSaveStatus(driver->xmlopt, cfg->stateDir, vm, driver->caps) < 0)
goto endjob;
}
if (persistentDef) {
switch (action) {
case VIR_DOMAIN_IOTHREAD_ACTION_ADD:
if (qemuDomainAddIOThreadCheck(persistentDef, iothread.iothread_id) < 0)
goto endjob;
if (!virDomainIOThreadIDAdd(persistentDef, iothread.iothread_id))
goto endjob;
break;
case VIR_DOMAIN_IOTHREAD_ACTION_DEL:
if (qemuDomainDelIOThreadCheck(persistentDef, iothread.iothread_id) < 0)
goto endjob;
virDomainIOThreadIDDel(persistentDef, iothread.iothread_id);
break;
case VIR_DOMAIN_IOTHREAD_ACTION_MOD:
virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s",
_("configuring persistent polling values is "
"not supported"));
goto endjob;
break;
}
if (virDomainSaveConfig(cfg->configDir, driver->caps,
persistentDef) < 0)
goto endjob;
}
ret = 0;
endjob:
qemuDomainObjEndJob(driver, vm);
cleanup:
virObjectUnref(cfg);
return ret;
}
static int
qemuDomainAddIOThread(virDomainPtr dom,
unsigned int iothread_id,
unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
virDomainObjPtr vm = NULL;
qemuMonitorIOThreadInfo iothread = {0};
int ret = -1;
virCheckFlags(VIR_DOMAIN_AFFECT_LIVE |
VIR_DOMAIN_AFFECT_CONFIG, -1);
if (iothread_id == 0) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("invalid value of 0 for iothread_id"));
return -1;
}
if (!(vm = qemuDomObjFromDomain(dom)))
goto cleanup;
if (virDomainAddIOThreadEnsureACL(dom->conn, vm->def, flags) < 0)
goto cleanup;
iothread.iothread_id = iothread_id;
ret = qemuDomainChgIOThread(driver, vm, iothread,
VIR_DOMAIN_IOTHREAD_ACTION_ADD, flags);
cleanup:
virDomainObjEndAPI(&vm);
return ret;
}
static int
qemuDomainDelIOThread(virDomainPtr dom,
unsigned int iothread_id,
unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
virDomainObjPtr vm = NULL;
qemuMonitorIOThreadInfo iothread = {0};
int ret = -1;
virCheckFlags(VIR_DOMAIN_AFFECT_LIVE |
VIR_DOMAIN_AFFECT_CONFIG, -1);
if (iothread_id == 0) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("invalid value of 0 for iothread_id"));
return -1;
}
if (!(vm = qemuDomObjFromDomain(dom)))
goto cleanup;
if (virDomainDelIOThreadEnsureACL(dom->conn, vm->def, flags) < 0)
goto cleanup;
iothread.iothread_id = iothread_id;
ret = qemuDomainChgIOThread(driver, vm, iothread,
VIR_DOMAIN_IOTHREAD_ACTION_DEL, flags);
cleanup:
virDomainObjEndAPI(&vm);
return ret;
}
/**
* @dom: Domain to set IOThread params
* @iothread_id: IOThread 'id' that will be modified
* @params: List of parameters to change
* @nparams: Number of parameters in the list
* @flags: Flags for the set (only supports live alteration)
*
* Alter the specified @iothread_id with the values provided.
*
* Returs 0 on success, -1 on failure
*/
static int
qemuDomainSetIOThreadParams(virDomainPtr dom,
unsigned int iothread_id,
virTypedParameterPtr params,
int nparams,
unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
virDomainObjPtr vm = NULL;
qemuMonitorIOThreadInfo iothread = {0};
int ret = -1;
virCheckFlags(VIR_DOMAIN_AFFECT_LIVE, -1);
if (iothread_id == 0) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("invalid value of 0 for iothread_id"));
goto cleanup;
}
iothread.iothread_id = iothread_id;
if (!(vm = qemuDomObjFromDomain(dom)))
goto cleanup;
if (virDomainSetIOThreadParamsEnsureACL(dom->conn, vm->def, flags) < 0)
goto cleanup;
if (qemuDomainIOThreadParseParams(params, nparams, &iothread) < 0)
goto cleanup;
ret = qemuDomainChgIOThread(driver, vm, iothread,
VIR_DOMAIN_IOTHREAD_ACTION_MOD, flags);
cleanup:
virDomainObjEndAPI(&vm);
return ret;
}
static int qemuDomainGetSecurityLabel(virDomainPtr dom, virSecurityLabelPtr seclabel)
{
virQEMUDriverPtr driver = dom->conn->privateData;
virDomainObjPtr vm;
int ret = -1;
memset(seclabel, 0, sizeof(*seclabel));
if (!(vm = qemuDomObjFromDomain(dom)))
return -1;
if (virDomainGetSecurityLabelEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
if (!virDomainVirtTypeToString(vm->def->virtType)) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("unknown virt type in domain definition '%d'"),
vm->def->virtType);
goto cleanup;
}
/*
* Theoretically, the pid can be replaced during this operation and
* return the label of a different process. If atomicity is needed,
* further validation will be required.
*
* Comment from Dan Berrange:
*
* Well the PID as stored in the virDomainObjPtr can't be changed
* because you've got a locked object. The OS level PID could have
* exited, though and in extreme circumstances have cycled through all
* PIDs back to ours. We could sanity check that our PID still exists
* after reading the label, by checking that our FD connecting to the
* QEMU monitor hasn't seen SIGHUP/ERR on poll().
*/
if (virDomainObjIsActive(vm)) {
if (qemuSecurityGetProcessLabel(driver->securityManager,
vm->def, vm->pid, seclabel) < 0)
goto cleanup;
}
ret = 0;
cleanup:
virDomainObjEndAPI(&vm);
return ret;
}
static int qemuDomainGetSecurityLabelList(virDomainPtr dom,
virSecurityLabelPtr* seclabels)
{
virQEMUDriverPtr driver = dom->conn->privateData;
virDomainObjPtr vm;
size_t i;
int ret = -1;
if (!(vm = qemuDomObjFromDomain(dom)))
return -1;
if (virDomainGetSecurityLabelListEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
if (!virDomainVirtTypeToString(vm->def->virtType)) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("unknown virt type in domain definition '%d'"),
vm->def->virtType);
goto cleanup;
}
/*
* Check the comment in qemuDomainGetSecurityLabel function.
*/
if (!virDomainObjIsActive(vm)) {
/* No seclabels */
*seclabels = NULL;
ret = 0;
} else {
int len = 0;
virSecurityManagerPtr* mgrs = qemuSecurityGetNested(driver->securityManager);
if (!mgrs)
goto cleanup;
/* Allocate seclabels array */
for (i = 0; mgrs[i]; i++)
len++;
if (VIR_ALLOC_N((*seclabels), len) < 0) {
VIR_FREE(mgrs);
goto cleanup;
}
memset(*seclabels, 0, sizeof(**seclabels) * len);
/* Fill the array */
for (i = 0; i < len; i++) {
if (qemuSecurityGetProcessLabel(mgrs[i], vm->def, vm->pid,
&(*seclabels)[i]) < 0) {
VIR_FREE(mgrs);
VIR_FREE(*seclabels);
goto cleanup;
}
}
ret = len;
VIR_FREE(mgrs);
}
cleanup:
virDomainObjEndAPI(&vm);
return ret;
}
static int qemuNodeGetSecurityModel(virConnectPtr conn,
virSecurityModelPtr secmodel)
{
virQEMUDriverPtr driver = conn->privateData;
char *p;
int ret = 0;
virCapsPtr caps = NULL;
memset(secmodel, 0, sizeof(*secmodel));
if (!(caps = virQEMUDriverGetCapabilities(driver, false)))
goto cleanup;
if (virNodeGetSecurityModelEnsureACL(conn) < 0)
goto cleanup;
/* We treat no driver as success, but simply return no data in *secmodel */
if (caps->host.nsecModels == 0 ||
caps->host.secModels[0].model == NULL)
goto cleanup;
p = caps->host.secModels[0].model;
if (strlen(p) >= VIR_SECURITY_MODEL_BUFLEN-1) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("security model string exceeds max %d bytes"),
VIR_SECURITY_MODEL_BUFLEN-1);
ret = -1;
goto cleanup;
}
strcpy(secmodel->model, p);
p = caps->host.secModels[0].doi;
if (strlen(p) >= VIR_SECURITY_DOI_BUFLEN-1) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("security DOI string exceeds max %d bytes"),
VIR_SECURITY_DOI_BUFLEN-1);
ret = -1;
goto cleanup;
}
strcpy(secmodel->doi, p);
cleanup:
virObjectUnref(caps);
return ret;
}
/**
* qemuDomainSaveImageUpdateDef:
* @driver: qemu driver data
* @def: def of the domain from the save image
* @newxml: user provided replacement XML
*
* Returns the new domain definition in case @newxml is ABI compatible with the
* guest.
*/
static virDomainDefPtr
qemuDomainSaveImageUpdateDef(virQEMUDriverPtr driver,
virDomainDefPtr def,
const char *newxml)
{
virDomainDefPtr ret = NULL;
virDomainDefPtr newdef_migr = NULL;
virDomainDefPtr newdef = NULL;
virCapsPtr caps = NULL;
if (!(caps = virQEMUDriverGetCapabilities(driver, false)))
goto cleanup;
if (!(newdef = virDomainDefParseString(newxml, caps, driver->xmlopt, NULL,
VIR_DOMAIN_DEF_PARSE_INACTIVE)))
goto cleanup;
if (!(newdef_migr = qemuDomainDefCopy(driver,
newdef,
QEMU_DOMAIN_FORMAT_LIVE_FLAGS |
VIR_DOMAIN_XML_MIGRATABLE)))
goto cleanup;
if (!virDomainDefCheckABIStability(def, newdef_migr, driver->xmlopt)) {
virErrorPtr err = virSaveLastError();
/* Due to a bug in older version of external snapshot creation
* code, the XML saved in the save image was not a migratable
* XML. To ensure backwards compatibility with the change of the
* saved XML type, we need to check the ABI compatibility against
* the user provided XML if the check against the migratable XML
* fails. Snapshots created prior to v1.1.3 have this issue. */
if (!virDomainDefCheckABIStability(def, newdef, driver->xmlopt)) {
virSetError(err);
virFreeError(err);
goto cleanup;
}
virFreeError(err);
/* use the user provided XML */
ret = newdef;
newdef = NULL;
} else {
ret = newdef_migr;
newdef_migr = NULL;
}
cleanup:
virObjectUnref(caps);
virDomainDefFree(newdef);
virDomainDefFree(newdef_migr);
return ret;
}
/**
* qemuDomainSaveImageOpen:
* @driver: qemu driver data
* @path: path of the save image
* @ret_def: returns domain definition created from the XML stored in the image
* @ret_data: returns structure filled with data from the image header
* @bypass_cache: bypass cache when opening the file
* @wrapperFd: returns the file wrapper structure
* @open_write: open the file for writing (for updates)
* @unlink_corrupt: remove the image file if it is corrupted
*
* Returns the opened fd of the save image file and fills the appropriate fields
* on success. On error returns -1 on most failures, -3 if corrupt image was
* unlinked (no error raised).
*/
static int ATTRIBUTE_NONNULL(3) ATTRIBUTE_NONNULL(4)
qemuDomainSaveImageOpen(virQEMUDriverPtr driver,
const char *path,
virDomainDefPtr *ret_def,
virQEMUSaveDataPtr *ret_data,
bool bypass_cache,
virFileWrapperFdPtr *wrapperFd,
bool open_write,
bool unlink_corrupt)
{
int fd = -1;
virQEMUSaveDataPtr data = NULL;
virQEMUSaveHeaderPtr header;
virDomainDefPtr def = NULL;
int oflags = open_write ? O_RDWR : O_RDONLY;
virCapsPtr caps = NULL;
size_t xml_len;
size_t cookie_len;
if (bypass_cache) {
int directFlag = virFileDirectFdFlag();
if (directFlag < 0) {
virReportError(VIR_ERR_OPERATION_FAILED, "%s",
_("bypass cache unsupported by this system"));
goto error;
}
oflags |= directFlag;
}
if (!(caps = virQEMUDriverGetCapabilities(driver, false)))
goto error;
if ((fd = qemuOpenFile(driver, NULL, path, oflags, NULL)) < 0)
goto error;
if (bypass_cache &&
!(*wrapperFd = virFileWrapperFdNew(&fd, path,
VIR_FILE_WRAPPER_BYPASS_CACHE)))
goto error;
if (VIR_ALLOC(data) < 0)
goto error;
header = &data->header;
if (saferead(fd, header, sizeof(*header)) != sizeof(*header)) {
if (unlink_corrupt) {
if (VIR_CLOSE(fd) < 0 || unlink(path) < 0) {
virReportSystemError(errno,
_("cannot remove corrupt file: %s"),
path);
} else {
fd = -3;
}
} else {
virReportError(VIR_ERR_OPERATION_FAILED,
"%s", _("failed to read qemu header"));
}
goto error;
}
if (memcmp(header->magic, QEMU_SAVE_MAGIC, sizeof(header->magic)) != 0) {
const char *msg = _("image magic is incorrect");
if (memcmp(header->magic, QEMU_SAVE_PARTIAL,
sizeof(header->magic)) == 0) {
msg = _("save image is incomplete");
if (unlink_corrupt) {
if (VIR_CLOSE(fd) < 0 || unlink(path) < 0) {
virReportSystemError(errno,
_("cannot remove corrupt file: %s"),
path);
} else {
fd = -3;
}
goto error;
}
}
virReportError(VIR_ERR_OPERATION_FAILED, "%s", msg);
goto error;
}
if (header->version > QEMU_SAVE_VERSION) {
/* convert endianess and try again */
bswap_header(header);
}
if (header->version > QEMU_SAVE_VERSION) {
virReportError(VIR_ERR_OPERATION_FAILED,
_("image version is not supported (%d > %d)"),
header->version, QEMU_SAVE_VERSION);
goto error;
}
if (header->data_len <= 0) {
virReportError(VIR_ERR_OPERATION_FAILED,
_("invalid header data length: %d"), header->data_len);
goto error;
}
if (header->cookieOffset)
xml_len = header->cookieOffset;
else
xml_len = header->data_len;
cookie_len = header->data_len - xml_len;
if (VIR_ALLOC_N(data->xml, xml_len) < 0)
goto error;
if (saferead(fd, data->xml, xml_len) != xml_len) {
virReportError(VIR_ERR_OPERATION_FAILED,
"%s", _("failed to read domain XML"));
goto error;
}
if (cookie_len > 0) {
if (VIR_ALLOC_N(data->cookie, cookie_len) < 0)
goto error;
if (saferead(fd, data->cookie, cookie_len) != cookie_len) {
virReportError(VIR_ERR_OPERATION_FAILED, "%s",
_("failed to read cookie"));
goto error;
}
}
/* Create a domain from this XML */
if (!(def = virDomainDefParseString(data->xml, caps, driver->xmlopt, NULL,
VIR_DOMAIN_DEF_PARSE_INACTIVE |
VIR_DOMAIN_DEF_PARSE_SKIP_VALIDATE)))
goto error;
*ret_def = def;
*ret_data = data;
cleanup:
virObjectUnref(caps);
return fd;
error:
virDomainDefFree(def);
virQEMUSaveDataFree(data);
VIR_FORCE_CLOSE(fd);
goto cleanup;
}
static int ATTRIBUTE_NONNULL(4) ATTRIBUTE_NONNULL(5) ATTRIBUTE_NONNULL(6)
qemuDomainSaveImageStartVM(virConnectPtr conn,
virQEMUDriverPtr driver,
virDomainObjPtr vm,
int *fd,
virQEMUSaveDataPtr data,
const char *path,
bool start_paused,
qemuDomainAsyncJob asyncJob)
{
int ret = -1;
bool restored = false;
virObjectEventPtr event;
int intermediatefd = -1;
virCommandPtr cmd = NULL;
char *errbuf = NULL;
virQEMUDriverConfigPtr cfg = virQEMUDriverGetConfig(driver);
virQEMUSaveHeaderPtr header = &data->header;
qemuDomainSaveCookiePtr cookie = NULL;
if (virSaveCookieParseString(data->cookie, (virObjectPtr *)&cookie,
virDomainXMLOptionGetSaveCookie(driver->xmlopt)) < 0)
goto cleanup;
if ((header->version == 2) &&
(header->compressed != QEMU_SAVE_FORMAT_RAW)) {
if (!(cmd = qemuCompressGetCommand(header->compressed)))
goto cleanup;
intermediatefd = *fd;
*fd = -1;
virCommandSetInputFD(cmd, intermediatefd);
virCommandSetOutputFD(cmd, fd);
virCommandSetErrorBuffer(cmd, &errbuf);
virCommandDoAsyncIO(cmd);
if (virCommandRunAsync(cmd, NULL) < 0) {
*fd = intermediatefd;
goto cleanup;
}
}
/* No cookie means libvirt which saved the domain was too old to mess up
* the CPU definitions.
*/
if (cookie &&
qemuDomainFixupCPUs(vm, &cookie->cpu) < 0)
goto cleanup;
if (qemuProcessStart(conn, driver, vm, cookie ? cookie->cpu : NULL,
asyncJob, "stdio", *fd, path, NULL,
VIR_NETDEV_VPORT_PROFILE_OP_RESTORE,
VIR_QEMU_PROCESS_START_PAUSED |
VIR_QEMU_PROCESS_START_GEN_VMID) == 0)
restored = true;
if (intermediatefd != -1) {
virErrorPtr orig_err = NULL;
if (!restored) {
/* if there was an error setting up qemu, the intermediate
* process will wait forever to write to stdout, so we
* must manually kill it and ignore any error related to
* the process
*/
orig_err = virSaveLastError();
VIR_FORCE_CLOSE(intermediatefd);
VIR_FORCE_CLOSE(*fd);
}
if (virCommandWait(cmd, NULL) < 0) {
qemuProcessStop(driver, vm, VIR_DOMAIN_SHUTOFF_FAILED, asyncJob, 0);
restored = false;
}
VIR_DEBUG("Decompression binary stderr: %s", NULLSTR(errbuf));
if (orig_err) {
virSetError(orig_err);
virFreeError(orig_err);
}
}
VIR_FORCE_CLOSE(intermediatefd);
if (VIR_CLOSE(*fd) < 0) {
virReportSystemError(errno, _("cannot close file: %s"), path);
restored = false;
}
virDomainAuditStart(vm, "restored", restored);
if (!restored)
goto cleanup;
/* qemuProcessStart doesn't unset the qemu error reporting infrastructure
* in case of migration (which is used in this case) so we need to reset it
* so that the handle to virtlogd is not held open unnecessarily */
qemuMonitorSetDomainLog(qemuDomainGetMonitor(vm), NULL, NULL, NULL);
event = virDomainEventLifecycleNewFromObj(vm,
VIR_DOMAIN_EVENT_STARTED,
VIR_DOMAIN_EVENT_STARTED_RESTORED);
virObjectEventStateQueue(driver->domainEventState, event);
/* If it was running before, resume it now unless caller requested pause. */
if (header->was_running && !start_paused) {
if (qemuProcessStartCPUs(driver, vm,
VIR_DOMAIN_RUNNING_RESTORED,
asyncJob) < 0) {
if (virGetLastErrorCode() == VIR_ERR_OK)
virReportError(VIR_ERR_OPERATION_FAILED,
"%s", _("failed to resume domain"));
goto cleanup;
}
if (virDomainSaveStatus(driver->xmlopt, cfg->stateDir, vm, driver->caps) < 0) {
VIR_WARN("Failed to save status on vm %s", vm->def->name);
goto cleanup;
}
} else {
int detail = (start_paused ? VIR_DOMAIN_EVENT_SUSPENDED_PAUSED :
VIR_DOMAIN_EVENT_SUSPENDED_RESTORED);
event = virDomainEventLifecycleNewFromObj(vm,
VIR_DOMAIN_EVENT_SUSPENDED,
detail);
virObjectEventStateQueue(driver->domainEventState, event);
}
ret = 0;
cleanup:
virObjectUnref(cookie);
virCommandFree(cmd);
VIR_FREE(errbuf);
if (qemuSecurityRestoreSavedStateLabel(driver, vm, path) < 0)
VIR_WARN("failed to restore save state label on %s", path);
virObjectUnref(cfg);
return ret;
}
static int
qemuDomainRestoreFlags(virConnectPtr conn,
const char *path,
const char *dxml,
unsigned int flags)
{
virQEMUDriverPtr driver = conn->privateData;
qemuDomainObjPrivatePtr priv = NULL;
virDomainDefPtr def = NULL;
virDomainObjPtr vm = NULL;
char *xmlout = NULL;
const char *newxml = dxml;
int fd = -1;
int ret = -1;
virQEMUSaveDataPtr data = NULL;
virFileWrapperFdPtr wrapperFd = NULL;
bool hook_taint = false;
virCheckFlags(VIR_DOMAIN_SAVE_BYPASS_CACHE |
VIR_DOMAIN_SAVE_RUNNING |
VIR_DOMAIN_SAVE_PAUSED, -1);
virNWFilterReadLockFilterUpdates();
fd = qemuDomainSaveImageOpen(driver, path, &def, &data,
(flags & VIR_DOMAIN_SAVE_BYPASS_CACHE) != 0,
&wrapperFd, false, false);
if (fd < 0)
goto cleanup;
if (virDomainRestoreFlagsEnsureACL(conn, def) < 0)
goto cleanup;
if (virHookPresent(VIR_HOOK_DRIVER_QEMU)) {
int hookret;
if ((hookret = virHookCall(VIR_HOOK_DRIVER_QEMU, def->name,
VIR_HOOK_QEMU_OP_RESTORE,
VIR_HOOK_SUBOP_BEGIN,
NULL,
dxml ? dxml : data->xml,
&xmlout)) < 0)
goto cleanup;
if (hookret == 0 && !virStringIsEmpty(xmlout)) {
VIR_DEBUG("Using hook-filtered domain XML: %s", xmlout);
hook_taint = true;
newxml = xmlout;
}
}
if (newxml) {
virDomainDefPtr tmp;
if (!(tmp = qemuDomainSaveImageUpdateDef(driver, def, newxml)))
goto cleanup;
virDomainDefFree(def);
def = tmp;
}
if (!(vm = virDomainObjListAdd(driver->domains, def,
driver->xmlopt,
VIR_DOMAIN_OBJ_LIST_ADD_LIVE |
VIR_DOMAIN_OBJ_LIST_ADD_CHECK_LIVE,
NULL)))
goto cleanup;
def = NULL;
if (flags & VIR_DOMAIN_SAVE_RUNNING)
data->header.was_running = 1;
else if (flags & VIR_DOMAIN_SAVE_PAUSED)
data->header.was_running = 0;
if (hook_taint) {
priv = vm->privateData;
priv->hookRun = true;
}
if (qemuProcessBeginJob(driver, vm, VIR_DOMAIN_JOB_OPERATION_RESTORE,
flags) < 0)
goto cleanup;
ret = qemuDomainSaveImageStartVM(conn, driver, vm, &fd, data, path,
false, QEMU_ASYNC_JOB_START);
if (virFileWrapperFdClose(wrapperFd) < 0)
VIR_WARN("Failed to close %s", path);
qemuProcessEndJob(driver, vm);
cleanup:
virDomainDefFree(def);
VIR_FORCE_CLOSE(fd);
virQEMUSaveDataFree(data);
VIR_FREE(xmlout);
virFileWrapperFdFree(wrapperFd);
if (vm && ret < 0)
qemuDomainRemoveInactiveJob(driver, vm);
virDomainObjEndAPI(&vm);
virNWFilterUnlockFilterUpdates();
return ret;
}
static int
qemuDomainRestore(virConnectPtr conn,
const char *path)
{
return qemuDomainRestoreFlags(conn, path, NULL, 0);
}
static char *
qemuDomainSaveImageGetXMLDesc(virConnectPtr conn, const char *path,
unsigned int flags)
{
virQEMUDriverPtr driver = conn->privateData;
char *ret = NULL;
virDomainDefPtr def = NULL;
int fd = -1;
virQEMUSaveDataPtr data = NULL;
/* We only take subset of virDomainDefFormat flags. */
virCheckFlags(VIR_DOMAIN_XML_SECURE, NULL);
fd = qemuDomainSaveImageOpen(driver, path, &def, &data,
false, NULL, false, false);
if (fd < 0)
goto cleanup;
if (virDomainSaveImageGetXMLDescEnsureACL(conn, def, flags) < 0)
goto cleanup;
ret = qemuDomainDefFormatXML(driver, def, flags);
cleanup:
virQEMUSaveDataFree(data);
virDomainDefFree(def);
VIR_FORCE_CLOSE(fd);
return ret;
}
static int
qemuDomainSaveImageDefineXML(virConnectPtr conn, const char *path,
const char *dxml, unsigned int flags)
{
virQEMUDriverPtr driver = conn->privateData;
int ret = -1;
virDomainDefPtr def = NULL;
virDomainDefPtr newdef = NULL;
int fd = -1;
virQEMUSaveDataPtr data = NULL;
int state = -1;
virCheckFlags(VIR_DOMAIN_SAVE_RUNNING |
VIR_DOMAIN_SAVE_PAUSED, -1);
if (flags & VIR_DOMAIN_SAVE_RUNNING)
state = 1;
else if (flags & VIR_DOMAIN_SAVE_PAUSED)
state = 0;
fd = qemuDomainSaveImageOpen(driver, path, &def, &data,
false, NULL, true, false);
if (fd < 0)
goto cleanup;
if (virDomainSaveImageDefineXMLEnsureACL(conn, def) < 0)
goto cleanup;
if (STREQ(data->xml, dxml) &&
(state < 0 || state == data->header.was_running)) {
/* no change to the XML */
ret = 0;
goto cleanup;
}
if (state >= 0)
data->header.was_running = state;
if (!(newdef = qemuDomainSaveImageUpdateDef(driver, def, dxml)))
goto cleanup;
VIR_FREE(data->xml);
if (!(data->xml = qemuDomainDefFormatXML(driver, newdef,
VIR_DOMAIN_XML_INACTIVE |
VIR_DOMAIN_XML_SECURE |
VIR_DOMAIN_XML_MIGRATABLE)))
goto cleanup;
if (lseek(fd, 0, SEEK_SET) != 0) {
virReportSystemError(errno, _("cannot seek in '%s'"), path);
goto cleanup;
}
if (virQEMUSaveDataWrite(data, fd, path) < 0)
goto cleanup;
if (VIR_CLOSE(fd) < 0) {
virReportSystemError(errno, _("failed to write header data to '%s'"), path);
goto cleanup;
}
ret = 0;
cleanup:
virDomainDefFree(def);
virDomainDefFree(newdef);
VIR_FORCE_CLOSE(fd);
virQEMUSaveDataFree(data);
return ret;
}
static char *
qemuDomainManagedSaveGetXMLDesc(virDomainPtr dom, unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
virDomainObjPtr vm;
char *path = NULL;
char *ret = NULL;
virDomainDefPtr def = NULL;
int fd = -1;
virQEMUSaveDataPtr data = NULL;
/* We only take subset of virDomainDefFormat flags. */
virCheckFlags(VIR_DOMAIN_XML_SECURE, NULL);
if (!(vm = qemuDomObjFromDomain(dom)))
return ret;
if (virDomainManagedSaveGetXMLDescEnsureACL(dom->conn, vm->def, flags) < 0)
goto cleanup;
if (!(path = qemuDomainManagedSavePath(driver, vm)))
goto cleanup;
if (!virFileExists(path)) {
virReportError(VIR_ERR_OPERATION_INVALID, "%s",
_("domain does not have managed save image"));
goto cleanup;
}
if ((fd = qemuDomainSaveImageOpen(driver, path, &def, &data,
false, NULL, false, false)) < 0)
goto cleanup;
ret = qemuDomainDefFormatXML(driver, def, flags);
cleanup:
virQEMUSaveDataFree(data);
virDomainDefFree(def);
VIR_FORCE_CLOSE(fd);
virDomainObjEndAPI(&vm);
VIR_FREE(path);
return ret;
}
static int
qemuDomainManagedSaveDefineXML(virDomainPtr dom, const char *dxml,
unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
virConnectPtr conn = dom->conn;
virDomainObjPtr vm;
char *path = NULL;
int ret = -1;
if (!(vm = qemuDomObjFromDomain(dom)))
return -1;
if (virDomainManagedSaveDefineXMLEnsureACL(conn, vm->def) < 0)
goto cleanup;
if (!(path = qemuDomainManagedSavePath(driver, vm)))
goto cleanup;
if (!virFileExists(path)) {
virReportError(VIR_ERR_OPERATION_INVALID, "%s",
_("domain does not have managed save image"));
goto cleanup;
}
ret = qemuDomainSaveImageDefineXML(conn, path, dxml, flags);
cleanup:
virDomainObjEndAPI(&vm);
VIR_FREE(path);
return ret;
}
/* Return 0 on success, 1 if incomplete saved image was silently unlinked,
* and -1 on failure with error raised. */
static int
qemuDomainObjRestore(virConnectPtr conn,
virQEMUDriverPtr driver,
virDomainObjPtr vm,
const char *path,
bool start_paused,
bool bypass_cache,
qemuDomainAsyncJob asyncJob)
{
virDomainDefPtr def = NULL;
qemuDomainObjPrivatePtr priv = vm->privateData;
int fd = -1;
int ret = -1;
char *xmlout = NULL;
virQEMUSaveDataPtr data = NULL;
virFileWrapperFdPtr wrapperFd = NULL;
fd = qemuDomainSaveImageOpen(driver, path, &def, &data,
bypass_cache, &wrapperFd, false, true);
if (fd < 0) {
if (fd == -3)
ret = 1;
goto cleanup;
}
if (virHookPresent(VIR_HOOK_DRIVER_QEMU)) {
int hookret;
if ((hookret = virHookCall(VIR_HOOK_DRIVER_QEMU, def->name,
VIR_HOOK_QEMU_OP_RESTORE,
VIR_HOOK_SUBOP_BEGIN,
NULL, data->xml, &xmlout)) < 0)
goto cleanup;
if (hookret == 0 && !virStringIsEmpty(xmlout)) {
virDomainDefPtr tmp;
VIR_DEBUG("Using hook-filtered domain XML: %s", xmlout);
if (!(tmp = qemuDomainSaveImageUpdateDef(driver, def, xmlout)))
goto cleanup;
virDomainDefFree(def);
def = tmp;
priv->hookRun = true;
}
}
if (STRNEQ(vm->def->name, def->name) ||
memcmp(vm->def->uuid, def->uuid, VIR_UUID_BUFLEN)) {
char vm_uuidstr[VIR_UUID_STRING_BUFLEN];
char def_uuidstr[VIR_UUID_STRING_BUFLEN];
virUUIDFormat(vm->def->uuid, vm_uuidstr);
virUUIDFormat(def->uuid, def_uuidstr);
virReportError(VIR_ERR_OPERATION_FAILED,
_("cannot restore domain '%s' uuid %s from a file"
" which belongs to domain '%s' uuid %s"),
vm->def->name, vm_uuidstr,
def->name, def_uuidstr);
goto cleanup;
}
virDomainObjAssignDef(vm, def, true, NULL);
def = NULL;
ret = qemuDomainSaveImageStartVM(conn, driver, vm, &fd, data, path,
start_paused, asyncJob);
if (virFileWrapperFdClose(wrapperFd) < 0)
VIR_WARN("Failed to close %s", path);
cleanup:
virQEMUSaveDataFree(data);
VIR_FREE(xmlout);
virDomainDefFree(def);
VIR_FORCE_CLOSE(fd);
virFileWrapperFdFree(wrapperFd);
return ret;
}
static char
*qemuDomainGetXMLDesc(virDomainPtr dom,
unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
virDomainObjPtr vm;
char *ret = NULL;
/* Flags checked by virDomainDefFormat */
if (!(vm = qemuDomObjFromDomain(dom)))
goto cleanup;
if (virDomainGetXMLDescEnsureACL(dom->conn, vm->def, flags) < 0)
goto cleanup;
if (qemuDomainUpdateCurrentMemorySize(driver, vm) < 0)
goto cleanup;
if ((flags & VIR_DOMAIN_XML_MIGRATABLE))
flags |= QEMU_DOMAIN_FORMAT_LIVE_FLAGS;
/* The CPU is already updated in the domain's live definition, we need to
* ignore the VIR_DOMAIN_XML_UPDATE_CPU flag.
*/
if (virDomainObjIsActive(vm) &&
!(flags & VIR_DOMAIN_DEF_FORMAT_INACTIVE))
flags &= ~VIR_DOMAIN_XML_UPDATE_CPU;
ret = qemuDomainFormatXML(driver, vm, flags);
cleanup:
virDomainObjEndAPI(&vm);
return ret;
}
static char *qemuConnectDomainXMLFromNative(virConnectPtr conn,
const char *format,
const char *config,
unsigned int flags)
{
virQEMUDriverPtr driver = conn->privateData;
virDomainDefPtr def = NULL;
char *xml = NULL;
virCapsPtr caps = NULL;
virCheckFlags(0, NULL);
if (virConnectDomainXMLFromNativeEnsureACL(conn) < 0)
goto cleanup;
if (STRNEQ(format, QEMU_CONFIG_FORMAT_ARGV)) {
virReportError(VIR_ERR_INVALID_ARG,
_("unsupported config type %s"), format);
goto cleanup;
}
if (!(caps = virQEMUDriverGetCapabilities(driver, false)))
goto cleanup;
def = qemuParseCommandLineString(driver->qemuCapsCache,
caps, driver->xmlopt, config,
NULL, NULL, NULL);
if (!def)
goto cleanup;
if (!def->name && VIR_STRDUP(def->name, "unnamed") < 0)
goto cleanup;
xml = qemuDomainDefFormatXML(driver, def, VIR_DOMAIN_XML_INACTIVE);
cleanup:
virDomainDefFree(def);
virObjectUnref(caps);
return xml;
}
static char *qemuConnectDomainXMLToNative(virConnectPtr conn,
const char *format,
const char *xmlData,
unsigned int flags)
{
virQEMUDriverPtr driver = conn->privateData;
virDomainObjPtr vm = NULL;
virCommandPtr cmd = NULL;
char *ret = NULL;
size_t i;
virQEMUDriverConfigPtr cfg;
virCapsPtr caps = NULL;
virCheckFlags(0, NULL);
cfg = virQEMUDriverGetConfig(driver);
if (virConnectDomainXMLToNativeEnsureACL(conn) < 0)
goto cleanup;
if (STRNEQ(format, QEMU_CONFIG_FORMAT_ARGV)) {
virReportError(VIR_ERR_INVALID_ARG,
_("unsupported config type %s"), format);
goto cleanup;
}
if (!(caps = virQEMUDriverGetCapabilities(driver, false)))
goto cleanup;
if (!(vm = virDomainObjNew(driver->xmlopt)))
goto cleanup;
if (!(vm->def = virDomainDefParseString(xmlData, caps, driver->xmlopt, NULL,
VIR_DOMAIN_DEF_PARSE_INACTIVE |
VIR_DOMAIN_DEF_PARSE_ABI_UPDATE)))
goto cleanup;
/* Since we're just exporting args, we can't do bridge/network/direct
* setups, since libvirt will normally create TAP/macvtap devices
* directly. We convert those configs into generic 'ethernet'
* config and assume the user has suitable 'ifup-qemu' scripts
*/
for (i = 0; i < vm->def->nnets; i++) {
virDomainNetDefPtr net = vm->def->nets[i];
unsigned int bootIndex = net->info.bootIndex;
char *model = net->model;
virMacAddr mac = net->mac;
char *script = net->script;
net->model = NULL;
net->script = NULL;
virDomainNetDefClear(net);
net->type = VIR_DOMAIN_NET_TYPE_ETHERNET;
net->info.bootIndex = bootIndex;
net->model = model;
net->mac = mac;
net->script = script;
}
if (!(cmd = qemuProcessCreatePretendCmd(driver, vm, NULL,
qemuCheckFips(), true,
VIR_QEMU_PROCESS_START_COLD)))
goto cleanup;
ret = virCommandToString(cmd, false);
cleanup:
virCommandFree(cmd);
virObjectUnref(vm);
virObjectUnref(caps);
virObjectUnref(cfg);
return ret;
}
static int qemuConnectListDefinedDomains(virConnectPtr conn,
char **const names, int nnames) {
virQEMUDriverPtr driver = conn->privateData;
int ret = -1;
if (virConnectListDefinedDomainsEnsureACL(conn) < 0)
goto cleanup;
ret = virDomainObjListGetInactiveNames(driver->domains, names, nnames,
virConnectListDefinedDomainsCheckACL,
conn);
cleanup:
return ret;
}
static int qemuConnectNumOfDefinedDomains(virConnectPtr conn)
{
virQEMUDriverPtr driver = conn->privateData;
int ret = -1;
if (virConnectNumOfDefinedDomainsEnsureACL(conn) < 0)
goto cleanup;
ret = virDomainObjListNumOfDomains(driver->domains, false,
virConnectNumOfDefinedDomainsCheckACL,
conn);
cleanup:
return ret;
}
static int
qemuDomainObjStart(virConnectPtr conn,
virQEMUDriverPtr driver,
virDomainObjPtr vm,
unsigned int flags,
qemuDomainAsyncJob asyncJob)
{
int ret = -1;
char *managed_save;
bool start_paused = (flags & VIR_DOMAIN_START_PAUSED) != 0;
bool autodestroy = (flags & VIR_DOMAIN_START_AUTODESTROY) != 0;
bool bypass_cache = (flags & VIR_DOMAIN_START_BYPASS_CACHE) != 0;
bool force_boot = (flags & VIR_DOMAIN_START_FORCE_BOOT) != 0;
unsigned int start_flags = VIR_QEMU_PROCESS_START_COLD;
qemuDomainObjPrivatePtr priv = vm->privateData;
start_flags |= start_paused ? VIR_QEMU_PROCESS_START_PAUSED : 0;
start_flags |= autodestroy ? VIR_QEMU_PROCESS_START_AUTODESTROY : 0;
/*
* If there is a managed saved state restore it instead of starting
* from scratch. The old state is removed once the restoring succeeded.
*/
managed_save = qemuDomainManagedSavePath(driver, vm);
if (!managed_save)
goto cleanup;
if (virFileExists(managed_save)) {
if (force_boot) {
if (unlink(managed_save) < 0) {
virReportSystemError(errno,
_("cannot remove managed save file %s"),
managed_save);
goto cleanup;
}
vm->hasManagedSave = false;
} else {
virDomainJobOperation op = priv->job.current->operation;
priv->job.current->operation = VIR_DOMAIN_JOB_OPERATION_RESTORE;
ret = qemuDomainObjRestore(conn, driver, vm, managed_save,
start_paused, bypass_cache, asyncJob);
if (ret == 0) {
if (unlink(managed_save) < 0)
VIR_WARN("Failed to remove the managed state %s", managed_save);
else
vm->hasManagedSave = false;
goto cleanup;
} else if (ret < 0) {
VIR_WARN("Unable to restore from managed state %s. "
"Maybe the file is corrupted?", managed_save);
goto cleanup;
} else {
VIR_WARN("Ignoring incomplete managed state %s", managed_save);
priv->job.current->operation = op;
vm->hasManagedSave = false;
}
}
}
ret = qemuProcessStart(conn, driver, vm, NULL, asyncJob,
NULL, -1, NULL, NULL,
VIR_NETDEV_VPORT_PROFILE_OP_CREATE, start_flags);
virDomainAuditStart(vm, "booted", ret >= 0);
if (ret >= 0) {
virObjectEventPtr event =
virDomainEventLifecycleNewFromObj(vm,
VIR_DOMAIN_EVENT_STARTED,
VIR_DOMAIN_EVENT_STARTED_BOOTED);
virObjectEventStateQueue(driver->domainEventState, event);
if (start_paused) {
event = virDomainEventLifecycleNewFromObj(vm,
VIR_DOMAIN_EVENT_SUSPENDED,
VIR_DOMAIN_EVENT_SUSPENDED_PAUSED);
virObjectEventStateQueue(driver->domainEventState, event);
}
}
cleanup:
VIR_FREE(managed_save);
return ret;
}
static int
qemuDomainCreateWithFlags(virDomainPtr dom, unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
virDomainObjPtr vm;
int ret = -1;
virCheckFlags(VIR_DOMAIN_START_PAUSED |
VIR_DOMAIN_START_AUTODESTROY |
VIR_DOMAIN_START_BYPASS_CACHE |
VIR_DOMAIN_START_FORCE_BOOT, -1);
virNWFilterReadLockFilterUpdates();
if (!(vm = qemuDomObjFromDomain(dom)))
goto cleanup;
if (virDomainCreateWithFlagsEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
if (qemuProcessBeginJob(driver, vm, VIR_DOMAIN_JOB_OPERATION_START,
flags) < 0)
goto cleanup;
if (virDomainObjIsActive(vm)) {
virReportError(VIR_ERR_OPERATION_INVALID,
"%s", _("domain is already running"));
goto endjob;
}
if (qemuDomainObjStart(dom->conn, driver, vm, flags,
QEMU_ASYNC_JOB_START) < 0)
goto endjob;
dom->id = vm->def->id;
ret = 0;
endjob:
qemuProcessEndJob(driver, vm);
cleanup:
virDomainObjEndAPI(&vm);
virNWFilterUnlockFilterUpdates();
return ret;
}
static int
qemuDomainCreate(virDomainPtr dom)
{
return qemuDomainCreateWithFlags(dom, 0);
}
static virDomainPtr
qemuDomainDefineXMLFlags(virConnectPtr conn,
const char *xml,
unsigned int flags)
{
virQEMUDriverPtr driver = conn->privateData;
virDomainDefPtr def = NULL;
virDomainDefPtr oldDef = NULL;
virDomainObjPtr vm = NULL;
virDomainPtr dom = NULL;
virObjectEventPtr event = NULL;
virQEMUDriverConfigPtr cfg;
virCapsPtr caps = NULL;
unsigned int parse_flags = VIR_DOMAIN_DEF_PARSE_INACTIVE |
VIR_DOMAIN_DEF_PARSE_ABI_UPDATE;
virCheckFlags(VIR_DOMAIN_DEFINE_VALIDATE, NULL);
if (flags & VIR_DOMAIN_DEFINE_VALIDATE)
parse_flags |= VIR_DOMAIN_DEF_PARSE_VALIDATE_SCHEMA;
cfg = virQEMUDriverGetConfig(driver);
if (!(caps = virQEMUDriverGetCapabilities(driver, false)))
goto cleanup;
if (!(def = virDomainDefParseString(xml, caps, driver->xmlopt,
NULL, parse_flags)))
goto cleanup;
if (virXMLCheckIllegalChars("name", def->name, "\n") < 0)
goto cleanup;
if (virDomainDefineXMLFlagsEnsureACL(conn, def) < 0)
goto cleanup;
if (!(vm = virDomainObjListAdd(driver->domains, def,
driver->xmlopt,
0, &oldDef)))
goto cleanup;
def = NULL;
if (qemuDomainHasBlockjob(vm, true)) {
virReportError(VIR_ERR_BLOCK_COPY_ACTIVE, "%s",
_("domain has active block job"));
virDomainObjAssignDef(vm, NULL, false, NULL);
goto cleanup;
}
vm->persistent = 1;
if (virDomainSaveConfig(cfg->configDir, driver->caps,
vm->newDef ? vm->newDef : vm->def) < 0) {
if (oldDef) {
/* There is backup so this VM was defined before.
* Just restore the backup. */
VIR_INFO("Restoring domain '%s' definition", vm->def->name);
if (virDomainObjIsActive(vm))
vm->newDef = oldDef;
else
vm->def = oldDef;
oldDef = NULL;
} else {
/* Brand new domain. Remove it */
VIR_INFO("Deleting domain '%s'", vm->def->name);
vm->persistent = 0;
qemuDomainRemoveInactiveJob(driver, vm);
}
goto cleanup;
}
event = virDomainEventLifecycleNewFromObj(vm,
VIR_DOMAIN_EVENT_DEFINED,
!oldDef ?
VIR_DOMAIN_EVENT_DEFINED_ADDED :
VIR_DOMAIN_EVENT_DEFINED_UPDATED);
VIR_INFO("Creating domain '%s'", vm->def->name);
dom = virGetDomain(conn, vm->def->name, vm->def->uuid, vm->def->id);
cleanup:
virDomainDefFree(oldDef);
virDomainDefFree(def);
virDomainObjEndAPI(&vm);
virObjectEventStateQueue(driver->domainEventState, event);
virObjectUnref(caps);
virObjectUnref(cfg);
return dom;
}
static virDomainPtr
qemuDomainDefineXML(virConnectPtr conn, const char *xml)
{
return qemuDomainDefineXMLFlags(conn, xml, 0);
}
static int
qemuDomainUndefineFlags(virDomainPtr dom,
unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
virDomainObjPtr vm;
virObjectEventPtr event = NULL;
char *name = NULL;
int ret = -1;
int nsnapshots;
virQEMUDriverConfigPtr cfg = NULL;
virCheckFlags(VIR_DOMAIN_UNDEFINE_MANAGED_SAVE |
VIR_DOMAIN_UNDEFINE_SNAPSHOTS_METADATA |
VIR_DOMAIN_UNDEFINE_NVRAM |
VIR_DOMAIN_UNDEFINE_KEEP_NVRAM, -1);
if ((flags & VIR_DOMAIN_UNDEFINE_NVRAM) &&
(flags & VIR_DOMAIN_UNDEFINE_KEEP_NVRAM)) {
virReportError(VIR_ERR_OPERATION_INVALID,
"%s", _("cannot both keep and delete nvram"));
return -1;
}
if (!(vm = qemuDomObjFromDomain(dom)))
return -1;
cfg = virQEMUDriverGetConfig(driver);
if (virDomainUndefineFlagsEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_MODIFY) < 0)
goto cleanup;
if (!vm->persistent) {
virReportError(VIR_ERR_OPERATION_INVALID,
"%s", _("cannot undefine transient domain"));
goto endjob;
}
if (!virDomainObjIsActive(vm) &&
(nsnapshots = virDomainSnapshotObjListNum(vm->snapshots, NULL, 0))) {
if (!(flags & VIR_DOMAIN_UNDEFINE_SNAPSHOTS_METADATA)) {
virReportError(VIR_ERR_OPERATION_INVALID,
_("cannot delete inactive domain with %d "
"snapshots"),
nsnapshots);
goto endjob;
}
if (qemuDomainSnapshotDiscardAllMetadata(driver, vm) < 0)
goto endjob;
}
name = qemuDomainManagedSavePath(driver, vm);
if (name == NULL)
goto endjob;
if (virFileExists(name)) {
if (flags & VIR_DOMAIN_UNDEFINE_MANAGED_SAVE) {
if (unlink(name) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Failed to remove domain managed "
"save image"));
goto endjob;
}
} else {
virReportError(VIR_ERR_OPERATION_INVALID, "%s",
_("Refusing to undefine while domain managed "
"save image exists"));
goto endjob;
}
}
if (vm->def->os.loader &&
vm->def->os.loader->nvram &&
virFileExists(vm->def->os.loader->nvram)) {
if ((flags & VIR_DOMAIN_UNDEFINE_NVRAM)) {
if (unlink(vm->def->os.loader->nvram) < 0) {
virReportSystemError(errno,
_("failed to remove nvram: %s"),
vm->def->os.loader->nvram);
goto endjob;
}
} else if (!(flags & VIR_DOMAIN_UNDEFINE_KEEP_NVRAM)) {
virReportError(VIR_ERR_OPERATION_INVALID, "%s",
_("cannot undefine domain with nvram"));
goto endjob;
}
}
if (virDomainDeleteConfig(cfg->configDir, cfg->autostartDir, vm) < 0)
goto endjob;
event = virDomainEventLifecycleNewFromObj(vm,
VIR_DOMAIN_EVENT_UNDEFINED,
VIR_DOMAIN_EVENT_UNDEFINED_REMOVED);
VIR_INFO("Undefining domain '%s'", vm->def->name);
/* If the domain is active, keep it running but set it as transient.
* domainDestroy and domainShutdown will take care of removing the
* domain obj from the hash table.
*/
vm->persistent = 0;
if (!virDomainObjIsActive(vm))
qemuDomainRemoveInactive(driver, vm);
ret = 0;
endjob:
qemuDomainObjEndJob(driver, vm);
cleanup:
VIR_FREE(name);
virDomainObjEndAPI(&vm);
virObjectEventStateQueue(driver->domainEventState, event);
virObjectUnref(cfg);
return ret;
}
static int
qemuDomainUndefine(virDomainPtr dom)
{
return qemuDomainUndefineFlags(dom, 0);
}
static int
qemuDomainAttachDeviceLive(virDomainObjPtr vm,
virDomainDeviceDefPtr dev,
virQEMUDriverPtr driver)
{
int ret = -1;
const char *alias = NULL;
switch ((virDomainDeviceType)dev->type) {
case VIR_DOMAIN_DEVICE_DISK:
qemuDomainObjCheckDiskTaint(driver, vm, dev->data.disk, NULL);
ret = qemuDomainAttachDeviceDiskLive(driver, vm, dev);
if (!ret) {
alias = dev->data.disk->info.alias;
dev->data.disk = NULL;
}
break;
case VIR_DOMAIN_DEVICE_CONTROLLER:
ret = qemuDomainAttachControllerDevice(driver, vm, dev->data.controller);
if (!ret) {
alias = dev->data.controller->info.alias;
dev->data.controller = NULL;
}
break;
case VIR_DOMAIN_DEVICE_LEASE:
ret = qemuDomainAttachLease(driver, vm,
dev->data.lease);
if (ret == 0)
dev->data.lease = NULL;
break;
case VIR_DOMAIN_DEVICE_NET:
qemuDomainObjCheckNetTaint(driver, vm, dev->data.net, NULL);
ret = qemuDomainAttachNetDevice(driver, vm, dev->data.net);
if (!ret) {
alias = dev->data.net->info.alias;
dev->data.net = NULL;
}
break;
case VIR_DOMAIN_DEVICE_HOSTDEV:
qemuDomainObjCheckHostdevTaint(driver, vm, dev->data.hostdev, NULL);
ret = qemuDomainAttachHostDevice(driver, vm,
dev->data.hostdev);
if (!ret) {
alias = dev->data.hostdev->info->alias;
dev->data.hostdev = NULL;
}
break;
case VIR_DOMAIN_DEVICE_REDIRDEV:
ret = qemuDomainAttachRedirdevDevice(driver, vm,
dev->data.redirdev);
if (!ret) {
alias = dev->data.redirdev->info.alias;
dev->data.redirdev = NULL;
}
break;
case VIR_DOMAIN_DEVICE_CHR:
ret = qemuDomainAttachChrDevice(driver, vm,
dev->data.chr);
if (!ret) {
alias = dev->data.chr->info.alias;
dev->data.chr = NULL;
}
break;
case VIR_DOMAIN_DEVICE_RNG:
ret = qemuDomainAttachRNGDevice(driver, vm,
dev->data.rng);
if (!ret) {
alias = dev->data.rng->info.alias;
dev->data.rng = NULL;
}
break;
case VIR_DOMAIN_DEVICE_MEMORY:
/* note that qemuDomainAttachMemory always consumes dev->data.memory
* and dispatches DeviceAdded event on success */
ret = qemuDomainAttachMemory(driver, vm,
dev->data.memory);
dev->data.memory = NULL;
break;
case VIR_DOMAIN_DEVICE_SHMEM:
ret = qemuDomainAttachShmemDevice(driver, vm,
dev->data.shmem);
if (!ret) {
alias = dev->data.shmem->info.alias;
dev->data.shmem = NULL;
}
break;
case VIR_DOMAIN_DEVICE_WATCHDOG:
ret = qemuDomainAttachWatchdog(driver, vm,
dev->data.watchdog);
if (!ret) {
alias = dev->data.watchdog->info.alias;
dev->data.watchdog = NULL;
}
break;
case VIR_DOMAIN_DEVICE_INPUT:
ret = qemuDomainAttachInputDevice(driver, vm, dev->data.input);
if (ret == 0) {
alias = dev->data.input->info.alias;
dev->data.input = NULL;
}
break;
case VIR_DOMAIN_DEVICE_VSOCK:
ret = qemuDomainAttachVsockDevice(driver, vm, dev->data.vsock);
if (ret == 0) {
alias = dev->data.vsock->info.alias;
dev->data.vsock = NULL;
}
break;
case VIR_DOMAIN_DEVICE_NONE:
case VIR_DOMAIN_DEVICE_FS:
case VIR_DOMAIN_DEVICE_SOUND:
case VIR_DOMAIN_DEVICE_VIDEO:
case VIR_DOMAIN_DEVICE_GRAPHICS:
case VIR_DOMAIN_DEVICE_HUB:
case VIR_DOMAIN_DEVICE_SMARTCARD:
case VIR_DOMAIN_DEVICE_MEMBALLOON:
case VIR_DOMAIN_DEVICE_NVRAM:
case VIR_DOMAIN_DEVICE_TPM:
case VIR_DOMAIN_DEVICE_PANIC:
case VIR_DOMAIN_DEVICE_IOMMU:
case VIR_DOMAIN_DEVICE_LAST:
virReportError(VIR_ERR_OPERATION_UNSUPPORTED,
_("live attach of device '%s' is not supported"),
virDomainDeviceTypeToString(dev->type));
break;
}
if (alias) {
/* queue the event before the alias has a chance to get freed
* if the domain disappears while qemuDomainUpdateDeviceList
* is in monitor */
virObjectEventPtr event;
event = virDomainEventDeviceAddedNewFromObj(vm, alias);
virObjectEventStateQueue(driver->domainEventState, event);
}
if (ret == 0)
ret = qemuDomainUpdateDeviceList(driver, vm, QEMU_ASYNC_JOB_NONE);
return ret;
}
static int
qemuDomainDetachDeviceControllerLive(virQEMUDriverPtr driver,
virDomainObjPtr vm,
virDomainDeviceDefPtr dev,
bool async)
{
virDomainControllerDefPtr cont = dev->data.controller;
int ret = -1;
switch (cont->type) {
case VIR_DOMAIN_CONTROLLER_TYPE_SCSI:
ret = qemuDomainDetachControllerDevice(driver, vm, dev, async);
break;
default :
virReportError(VIR_ERR_OPERATION_UNSUPPORTED,
_("'%s' controller cannot be hot unplugged."),
virDomainControllerTypeToString(cont->type));
}
return ret;
}
static int
qemuDomainDetachDeviceLive(virDomainObjPtr vm,
virDomainDeviceDefPtr dev,
virQEMUDriverPtr driver,
bool async)
{
int ret = -1;
switch ((virDomainDeviceType)dev->type) {
case VIR_DOMAIN_DEVICE_DISK:
ret = qemuDomainDetachDeviceDiskLive(driver, vm, dev, async);
break;
case VIR_DOMAIN_DEVICE_CONTROLLER:
ret = qemuDomainDetachDeviceControllerLive(driver, vm, dev, async);
break;
case VIR_DOMAIN_DEVICE_LEASE:
ret = qemuDomainDetachLease(driver, vm, dev->data.lease);
break;
case VIR_DOMAIN_DEVICE_NET:
ret = qemuDomainDetachNetDevice(driver, vm, dev, async);
break;
case VIR_DOMAIN_DEVICE_HOSTDEV:
ret = qemuDomainDetachHostDevice(driver, vm, dev, async);
break;
case VIR_DOMAIN_DEVICE_CHR:
ret = qemuDomainDetachChrDevice(driver, vm, dev->data.chr, async);
break;
case VIR_DOMAIN_DEVICE_RNG:
ret = qemuDomainDetachRNGDevice(driver, vm, dev->data.rng, async);
break;
case VIR_DOMAIN_DEVICE_MEMORY:
ret = qemuDomainDetachMemoryDevice(driver, vm, dev->data.memory, async);
break;
case VIR_DOMAIN_DEVICE_SHMEM:
ret = qemuDomainDetachShmemDevice(driver, vm, dev->data.shmem, async);
break;
case VIR_DOMAIN_DEVICE_WATCHDOG:
ret = qemuDomainDetachWatchdog(driver, vm, dev->data.watchdog, async);
break;
case VIR_DOMAIN_DEVICE_INPUT:
ret = qemuDomainDetachInputDevice(vm, dev->data.input, async);
break;
case VIR_DOMAIN_DEVICE_REDIRDEV:
ret = qemuDomainDetachRedirdevDevice(driver, vm, dev->data.redirdev, async);
break;
case VIR_DOMAIN_DEVICE_VSOCK:
ret = qemuDomainDetachVsockDevice(vm, dev->data.vsock, async);
break;
case VIR_DOMAIN_DEVICE_FS:
case VIR_DOMAIN_DEVICE_SOUND:
case VIR_DOMAIN_DEVICE_VIDEO:
case VIR_DOMAIN_DEVICE_GRAPHICS:
case VIR_DOMAIN_DEVICE_HUB:
case VIR_DOMAIN_DEVICE_SMARTCARD:
case VIR_DOMAIN_DEVICE_MEMBALLOON:
case VIR_DOMAIN_DEVICE_NVRAM:
case VIR_DOMAIN_DEVICE_NONE:
case VIR_DOMAIN_DEVICE_TPM:
case VIR_DOMAIN_DEVICE_PANIC:
case VIR_DOMAIN_DEVICE_IOMMU:
case VIR_DOMAIN_DEVICE_LAST:
virReportError(VIR_ERR_OPERATION_UNSUPPORTED,
_("live detach of device '%s' is not supported"),
virDomainDeviceTypeToString(dev->type));
break;
}
if (ret == 0)
ret = qemuDomainUpdateDeviceList(driver, vm, QEMU_ASYNC_JOB_NONE);
return ret;
}
static int
qemuDomainChangeDiskLive(virDomainObjPtr vm,
virDomainDeviceDefPtr dev,
virQEMUDriverPtr driver,
bool force)
{
virDomainDiskDefPtr disk = dev->data.disk;
virDomainDiskDefPtr orig_disk = NULL;
virDomainDeviceDef oldDev = { .type = dev->type };
int ret = -1;
if (!(orig_disk = virDomainDiskFindByBusAndDst(vm->def,
disk->bus, disk->dst))) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("No device with bus '%s' and target '%s'"),
virDomainDiskBusTypeToString(disk->bus),
disk->dst);
goto cleanup;
}
oldDev.data.disk = orig_disk;
if (virDomainDefCompatibleDevice(vm->def, dev, &oldDev,
VIR_DOMAIN_DEVICE_ACTION_UPDATE,
true) < 0)
goto cleanup;
if (!qemuDomainDiskChangeSupported(disk, orig_disk))
goto cleanup;
if (!virStorageSourceIsSameLocation(disk->src, orig_disk->src)) {
/* Disk source can be changed only for removable devices */
if (disk->device != VIR_DOMAIN_DISK_DEVICE_CDROM &&
disk->device != VIR_DOMAIN_DISK_DEVICE_FLOPPY) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("disk source can be changed only in removable "
"drives"));
goto cleanup;
}
if (qemuDomainChangeEjectableMedia(driver, vm, orig_disk,
dev->data.disk->src, force) < 0)
goto cleanup;
dev->data.disk->src = NULL;
}
orig_disk->startupPolicy = dev->data.disk->startupPolicy;
orig_disk->snapshot = dev->data.disk->snapshot;
ret = 0;
cleanup:
return ret;
}
static int
qemuDomainUpdateDeviceLive(virDomainObjPtr vm,
virDomainDeviceDefPtr dev,
virDomainPtr dom,
bool force)
{
virQEMUDriverPtr driver = dom->conn->privateData;
virDomainDeviceDef oldDev = { .type = dev->type };
int ret = -1;
int idx;
switch ((virDomainDeviceType)dev->type) {
case VIR_DOMAIN_DEVICE_DISK:
qemuDomainObjCheckDiskTaint(driver, vm, dev->data.disk, NULL);
ret = qemuDomainChangeDiskLive(vm, dev, driver, force);
break;
case VIR_DOMAIN_DEVICE_GRAPHICS:
if ((idx = qemuDomainFindGraphicsIndex(vm->def, dev->data.graphics)) >= 0) {
oldDev.data.graphics = vm->def->graphics[idx];
if (virDomainDefCompatibleDevice(vm->def, dev, &oldDev,
VIR_DOMAIN_DEVICE_ACTION_UPDATE,
true) < 0)
return -1;
}
ret = qemuDomainChangeGraphics(driver, vm, dev->data.graphics);
break;
case VIR_DOMAIN_DEVICE_NET:
if ((idx = virDomainNetFindIdx(vm->def, dev->data.net)) >= 0) {
oldDev.data.net = vm->def->nets[idx];
if (virDomainDefCompatibleDevice(vm->def, dev, &oldDev,
VIR_DOMAIN_DEVICE_ACTION_UPDATE,
true) < 0)
return -1;
}
ret = qemuDomainChangeNet(driver, vm, dev);
break;
case VIR_DOMAIN_DEVICE_FS:
case VIR_DOMAIN_DEVICE_INPUT:
case VIR_DOMAIN_DEVICE_SOUND:
case VIR_DOMAIN_DEVICE_VIDEO:
case VIR_DOMAIN_DEVICE_WATCHDOG:
case VIR_DOMAIN_DEVICE_HUB:
case VIR_DOMAIN_DEVICE_SMARTCARD:
case VIR_DOMAIN_DEVICE_MEMBALLOON:
case VIR_DOMAIN_DEVICE_NVRAM:
case VIR_DOMAIN_DEVICE_RNG:
case VIR_DOMAIN_DEVICE_SHMEM:
case VIR_DOMAIN_DEVICE_LEASE:
case VIR_DOMAIN_DEVICE_HOSTDEV:
case VIR_DOMAIN_DEVICE_CONTROLLER:
case VIR_DOMAIN_DEVICE_REDIRDEV:
case VIR_DOMAIN_DEVICE_MEMORY:
case VIR_DOMAIN_DEVICE_CHR:
case VIR_DOMAIN_DEVICE_NONE:
case VIR_DOMAIN_DEVICE_TPM:
case VIR_DOMAIN_DEVICE_PANIC:
case VIR_DOMAIN_DEVICE_IOMMU:
case VIR_DOMAIN_DEVICE_VSOCK:
case VIR_DOMAIN_DEVICE_LAST:
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("live update of device '%s' is not supported"),
virDomainDeviceTypeToString(dev->type));
break;
}
return ret;
}
static int
qemuDomainAttachDeviceConfig(virDomainDefPtr vmdef,
virDomainDeviceDefPtr dev,
virCapsPtr caps,
unsigned int parse_flags,
virDomainXMLOptionPtr xmlopt)
{
virDomainDiskDefPtr disk;
virDomainNetDefPtr net;
virDomainHostdevDefPtr hostdev;
virDomainLeaseDefPtr lease;
virDomainControllerDefPtr controller;
virDomainFSDefPtr fs;
virDomainRedirdevDefPtr redirdev;
virDomainShmemDefPtr shmem;
switch ((virDomainDeviceType)dev->type) {
case VIR_DOMAIN_DEVICE_DISK:
disk = dev->data.disk;
if (virDomainDiskIndexByName(vmdef, disk->dst, true) >= 0) {
virReportError(VIR_ERR_OPERATION_INVALID,
_("target %s already exists"), disk->dst);
return -1;
}
if (virDomainDiskTranslateSourcePool(disk) < 0)
return -1;
if (qemuCheckDiskConfig(disk, NULL) < 0)
return -1;
if (virDomainDiskInsert(vmdef, disk))
return -1;
/* vmdef has the pointer. Generic codes for vmdef will do all jobs */
dev->data.disk = NULL;
break;
case VIR_DOMAIN_DEVICE_NET:
net = dev->data.net;
if (virDomainNetInsert(vmdef, net))
return -1;
dev->data.net = NULL;
break;
case VIR_DOMAIN_DEVICE_HOSTDEV:
hostdev = dev->data.hostdev;
if (virDomainHostdevFind(vmdef, hostdev, NULL) >= 0) {
virReportError(VIR_ERR_OPERATION_INVALID, "%s",
_("device is already in the domain configuration"));
return -1;
}
if (virDomainHostdevInsert(vmdef, hostdev))
return -1;
dev->data.hostdev = NULL;
break;
case VIR_DOMAIN_DEVICE_LEASE:
lease = dev->data.lease;
if (virDomainLeaseIndex(vmdef, lease) >= 0) {
virReportError(VIR_ERR_OPERATION_INVALID,
_("Lease %s in lockspace %s already exists"),
lease->key, NULLSTR(lease->lockspace));
return -1;
}
if (virDomainLeaseInsert(vmdef, lease) < 0)
return -1;
/* vmdef has the pointer. Generic codes for vmdef will do all jobs */
dev->data.lease = NULL;
break;
case VIR_DOMAIN_DEVICE_CONTROLLER:
controller = dev->data.controller;
if (controller->idx != -1 &&
virDomainControllerFind(vmdef, controller->type,
controller->idx) >= 0) {
virReportError(VIR_ERR_OPERATION_INVALID,
_("controller index='%d' already exists"),
controller->idx);
return -1;
}
if (virDomainControllerInsert(vmdef, controller) < 0)
return -1;
dev->data.controller = NULL;
break;
case VIR_DOMAIN_DEVICE_CHR:
if (qemuDomainChrInsert(vmdef, dev->data.chr) < 0)
return -1;
dev->data.chr = NULL;
break;
case VIR_DOMAIN_DEVICE_FS:
fs = dev->data.fs;
if (virDomainFSIndexByName(vmdef, fs->dst) >= 0) {
virReportError(VIR_ERR_OPERATION_INVALID,
"%s", _("Target already exists"));
return -1;
}
if (virDomainFSInsert(vmdef, fs) < 0)
return -1;
dev->data.fs = NULL;
break;
case VIR_DOMAIN_DEVICE_RNG:
if (dev->data.rng->info.type != VIR_DOMAIN_DEVICE_ADDRESS_TYPE_NONE &&
virDomainDefHasDeviceAddress(vmdef, &dev->data.rng->info)) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("a device with the same address already exists "));
return -1;
}
if (VIR_APPEND_ELEMENT(vmdef->rngs, vmdef->nrngs, dev->data.rng) < 0)
return -1;
dev->data.rng = NULL;
break;
case VIR_DOMAIN_DEVICE_MEMORY:
if (vmdef->nmems == vmdef->mem.memory_slots) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("no free memory device slot available"));
return -1;
}
vmdef->mem.cur_balloon += dev->data.memory->size;
if (virDomainMemoryInsert(vmdef, dev->data.memory) < 0)
return -1;
dev->data.memory = NULL;
break;
case VIR_DOMAIN_DEVICE_REDIRDEV:
redirdev = dev->data.redirdev;
if (VIR_APPEND_ELEMENT(vmdef->redirdevs, vmdef->nredirdevs, redirdev) < 0)
return -1;
dev->data.redirdev = NULL;
break;
case VIR_DOMAIN_DEVICE_SHMEM:
shmem = dev->data.shmem;
if (virDomainShmemDefFind(vmdef, shmem) >= 0) {
virReportError(VIR_ERR_OPERATION_INVALID, "%s",
_("device is already in the domain configuration"));
return -1;
}
if (virDomainShmemDefInsert(vmdef, shmem) < 0)
return -1;
dev->data.shmem = NULL;
break;
case VIR_DOMAIN_DEVICE_WATCHDOG:
if (vmdef->watchdog) {
virReportError(VIR_ERR_OPERATION_INVALID, "%s",
_("domain already has a watchdog"));
return -1;
}
VIR_STEAL_PTR(vmdef->watchdog, dev->data.watchdog);
break;
case VIR_DOMAIN_DEVICE_INPUT:
if (VIR_APPEND_ELEMENT(vmdef->inputs, vmdef->ninputs, dev->data.input) < 0)
return -1;
break;
case VIR_DOMAIN_DEVICE_VSOCK:
if (vmdef->vsock) {
virReportError(VIR_ERR_OPERATION_INVALID, "%s",
_("domain already has a vsock device"));
return -1;
}
VIR_STEAL_PTR(vmdef->vsock, dev->data.vsock);
break;
case VIR_DOMAIN_DEVICE_SOUND:
case VIR_DOMAIN_DEVICE_VIDEO:
case VIR_DOMAIN_DEVICE_GRAPHICS:
case VIR_DOMAIN_DEVICE_HUB:
case VIR_DOMAIN_DEVICE_SMARTCARD:
case VIR_DOMAIN_DEVICE_MEMBALLOON:
case VIR_DOMAIN_DEVICE_NVRAM:
case VIR_DOMAIN_DEVICE_NONE:
case VIR_DOMAIN_DEVICE_TPM:
case VIR_DOMAIN_DEVICE_PANIC:
case VIR_DOMAIN_DEVICE_IOMMU:
case VIR_DOMAIN_DEVICE_LAST:
virReportError(VIR_ERR_OPERATION_UNSUPPORTED,
_("persistent attach of device '%s' is not supported"),
virDomainDeviceTypeToString(dev->type));
return -1;
}
if (virDomainDefPostParse(vmdef, caps, parse_flags, xmlopt, NULL) < 0)
return -1;
return 0;
}
static int
qemuDomainDetachDeviceConfig(virDomainDefPtr vmdef,
virDomainDeviceDefPtr dev,
virCapsPtr caps,
unsigned int parse_flags,
virDomainXMLOptionPtr xmlopt)
{
virDomainDiskDefPtr disk, det_disk;
virDomainNetDefPtr net;
virDomainHostdevDefPtr hostdev, det_hostdev;
virDomainLeaseDefPtr lease, det_lease;
virDomainControllerDefPtr cont, det_cont;
virDomainChrDefPtr chr;
virDomainFSDefPtr fs;
virDomainMemoryDefPtr mem;
int idx;
switch ((virDomainDeviceType)dev->type) {
case VIR_DOMAIN_DEVICE_DISK:
disk = dev->data.disk;
if (!(det_disk = virDomainDiskRemoveByName(vmdef, disk->dst))) {
virReportError(VIR_ERR_DEVICE_MISSING,
_("no target device %s"), disk->dst);
return -1;
}
virDomainDiskDefFree(det_disk);
break;
case VIR_DOMAIN_DEVICE_NET:
net = dev->data.net;
if ((idx = virDomainNetFindIdx(vmdef, net)) < 0)
return -1;
/* this is guaranteed to succeed */
virDomainNetDefFree(virDomainNetRemove(vmdef, idx));
break;
case VIR_DOMAIN_DEVICE_HOSTDEV: {
hostdev = dev->data.hostdev;
if ((idx = virDomainHostdevFind(vmdef, hostdev, &det_hostdev)) < 0) {
virReportError(VIR_ERR_DEVICE_MISSING, "%s",
_("device not present in domain configuration"));
return -1;
}
virDomainHostdevRemove(vmdef, idx);
virDomainHostdevDefFree(det_hostdev);
break;
}
case VIR_DOMAIN_DEVICE_LEASE:
lease = dev->data.lease;
if (!(det_lease = virDomainLeaseRemove(vmdef, lease))) {
virReportError(VIR_ERR_DEVICE_MISSING,
_("Lease %s in lockspace %s does not exist"),
lease->key, NULLSTR(lease->lockspace));
return -1;
}
virDomainLeaseDefFree(det_lease);
break;
case VIR_DOMAIN_DEVICE_CONTROLLER:
cont = dev->data.controller;
if ((idx = virDomainControllerFind(vmdef, cont->type,
cont->idx)) < 0) {
virReportError(VIR_ERR_DEVICE_MISSING, "%s",
_("device not present in domain configuration"));
return -1;
}
det_cont = virDomainControllerRemove(vmdef, idx);
virDomainControllerDefFree(det_cont);
break;
case VIR_DOMAIN_DEVICE_CHR:
if (!(chr = qemuDomainChrRemove(vmdef, dev->data.chr)))
return -1;
virDomainChrDefFree(chr);
break;
case VIR_DOMAIN_DEVICE_FS:
fs = dev->data.fs;
idx = virDomainFSIndexByName(vmdef, fs->dst);
if (idx < 0) {
virReportError(VIR_ERR_DEVICE_MISSING, "%s",
_("no matching filesystem device was found"));
return -1;
}
fs = virDomainFSRemove(vmdef, idx);
virDomainFSDefFree(fs);
break;
case VIR_DOMAIN_DEVICE_RNG:
if ((idx = virDomainRNGFind(vmdef, dev->data.rng)) < 0) {
virReportError(VIR_ERR_DEVICE_MISSING, "%s",
_("no matching RNG device was found"));
return -1;
}
virDomainRNGDefFree(virDomainRNGRemove(vmdef, idx));
break;
case VIR_DOMAIN_DEVICE_MEMORY:
if ((idx = virDomainMemoryFindInactiveByDef(vmdef,
dev->data.memory)) < 0) {
virReportError(VIR_ERR_DEVICE_MISSING, "%s",
_("matching memory device was not found"));
return -1;
}
mem = virDomainMemoryRemove(vmdef, idx);
vmdef->mem.cur_balloon -= mem->size;
virDomainMemoryDefFree(mem);
break;
case VIR_DOMAIN_DEVICE_REDIRDEV:
if ((idx = virDomainRedirdevDefFind(vmdef,
dev->data.redirdev)) < 0) {
virReportError(VIR_ERR_DEVICE_MISSING, "%s",
_("no matching redirdev was not found"));
return -1;
}
virDomainRedirdevDefFree(virDomainRedirdevDefRemove(vmdef, idx));
break;
case VIR_DOMAIN_DEVICE_SHMEM:
if ((idx = virDomainShmemDefFind(vmdef, dev->data.shmem)) < 0) {
virReportError(VIR_ERR_DEVICE_MISSING, "%s",
_("matching shmem device was not found"));
return -1;
}
virDomainShmemDefFree(virDomainShmemDefRemove(vmdef, idx));
break;
case VIR_DOMAIN_DEVICE_WATCHDOG:
if (!vmdef->watchdog) {
virReportError(VIR_ERR_DEVICE_MISSING, "%s",
_("domain has no watchdog"));
return -1;
}
virDomainWatchdogDefFree(vmdef->watchdog);
vmdef->watchdog = NULL;
break;
case VIR_DOMAIN_DEVICE_INPUT:
if ((idx = virDomainInputDefFind(vmdef, dev->data.input)) < 0) {
virReportError(VIR_ERR_DEVICE_MISSING, "%s",
_("matching input device not found"));
return -1;
}
VIR_DELETE_ELEMENT(vmdef->inputs, idx, vmdef->ninputs);
break;
case VIR_DOMAIN_DEVICE_VSOCK:
if (!vmdef->vsock ||
!virDomainVsockDefEquals(dev->data.vsock, vmdef->vsock)) {
virReportError(VIR_ERR_OPERATION_FAILED, "%s",
_("matching vsock device not found"));
return -1;
}
virDomainVsockDefFree(vmdef->vsock);
vmdef->vsock = NULL;
break;
case VIR_DOMAIN_DEVICE_SOUND:
case VIR_DOMAIN_DEVICE_VIDEO:
case VIR_DOMAIN_DEVICE_GRAPHICS:
case VIR_DOMAIN_DEVICE_HUB:
case VIR_DOMAIN_DEVICE_SMARTCARD:
case VIR_DOMAIN_DEVICE_MEMBALLOON:
case VIR_DOMAIN_DEVICE_NVRAM:
case VIR_DOMAIN_DEVICE_NONE:
case VIR_DOMAIN_DEVICE_TPM:
case VIR_DOMAIN_DEVICE_PANIC:
case VIR_DOMAIN_DEVICE_IOMMU:
case VIR_DOMAIN_DEVICE_LAST:
virReportError(VIR_ERR_OPERATION_UNSUPPORTED,
_("persistent detach of device '%s' is not supported"),
virDomainDeviceTypeToString(dev->type));
return -1;
}
if (virDomainDefPostParse(vmdef, caps, parse_flags, xmlopt, NULL) < 0)
return -1;
return 0;
}
static int
qemuDomainUpdateDeviceConfig(virDomainDefPtr vmdef,
virDomainDeviceDefPtr dev,
virCapsPtr caps,
unsigned int parse_flags,
virDomainXMLOptionPtr xmlopt)
{
virDomainDiskDefPtr newDisk;
virDomainGraphicsDefPtr newGraphics;
virDomainNetDefPtr net;
virDomainDeviceDef oldDev = { .type = dev->type };
int pos;
switch ((virDomainDeviceType)dev->type) {
case VIR_DOMAIN_DEVICE_DISK:
newDisk = dev->data.disk;
if ((pos = virDomainDiskIndexByName(vmdef, newDisk->dst, false)) < 0) {
virReportError(VIR_ERR_INVALID_ARG,
_("target %s doesn't exist."), newDisk->dst);
return -1;
}
oldDev.data.disk = vmdef->disks[pos];
if (virDomainDefCompatibleDevice(vmdef, dev, &oldDev,
VIR_DOMAIN_DEVICE_ACTION_UPDATE,
false) < 0)
return -1;
virDomainDiskDefFree(vmdef->disks[pos]);
vmdef->disks[pos] = newDisk;
dev->data.disk = NULL;
break;
case VIR_DOMAIN_DEVICE_GRAPHICS:
newGraphics = dev->data.graphics;
pos = qemuDomainFindGraphicsIndex(vmdef, newGraphics);
if (pos < 0) {
virReportError(VIR_ERR_INVALID_ARG,
_("cannot find existing graphics type '%s' device to modify"),
virDomainGraphicsTypeToString(newGraphics->type));
return -1;
}
oldDev.data.graphics = vmdef->graphics[pos];
if (virDomainDefCompatibleDevice(vmdef, dev, &oldDev,
VIR_DOMAIN_DEVICE_ACTION_UPDATE,
false) < 0)
return -1;
virDomainGraphicsDefFree(vmdef->graphics[pos]);
vmdef->graphics[pos] = newGraphics;
dev->data.graphics = NULL;
break;
case VIR_DOMAIN_DEVICE_NET:
net = dev->data.net;
if ((pos = virDomainNetFindIdx(vmdef, net)) < 0)
return -1;
oldDev.data.net = vmdef->nets[pos];
if (virDomainDefCompatibleDevice(vmdef, dev, &oldDev,
VIR_DOMAIN_DEVICE_ACTION_UPDATE,
false) < 0)
return -1;
virDomainNetDefFree(vmdef->nets[pos]);
vmdef->nets[pos] = net;
dev->data.net = NULL;
break;
case VIR_DOMAIN_DEVICE_FS:
case VIR_DOMAIN_DEVICE_INPUT:
case VIR_DOMAIN_DEVICE_SOUND:
case VIR_DOMAIN_DEVICE_VIDEO:
case VIR_DOMAIN_DEVICE_WATCHDOG:
case VIR_DOMAIN_DEVICE_HUB:
case VIR_DOMAIN_DEVICE_SMARTCARD:
case VIR_DOMAIN_DEVICE_MEMBALLOON:
case VIR_DOMAIN_DEVICE_NVRAM:
case VIR_DOMAIN_DEVICE_RNG:
case VIR_DOMAIN_DEVICE_SHMEM:
case VIR_DOMAIN_DEVICE_LEASE:
case VIR_DOMAIN_DEVICE_HOSTDEV:
case VIR_DOMAIN_DEVICE_CONTROLLER:
case VIR_DOMAIN_DEVICE_REDIRDEV:
case VIR_DOMAIN_DEVICE_CHR:
case VIR_DOMAIN_DEVICE_MEMORY:
case VIR_DOMAIN_DEVICE_NONE:
case VIR_DOMAIN_DEVICE_TPM:
case VIR_DOMAIN_DEVICE_PANIC:
case VIR_DOMAIN_DEVICE_IOMMU:
case VIR_DOMAIN_DEVICE_VSOCK:
case VIR_DOMAIN_DEVICE_LAST:
virReportError(VIR_ERR_OPERATION_UNSUPPORTED,
_("persistent update of device '%s' is not supported"),
virDomainDeviceTypeToString(dev->type));
return -1;
}
if (virDomainDefPostParse(vmdef, caps, parse_flags, xmlopt, NULL) < 0)
return -1;
return 0;
}
static int
qemuDomainAttachDeviceLiveAndConfig(virDomainObjPtr vm,
virQEMUDriverPtr driver,
const char *xml,
unsigned int flags)
{
virDomainDefPtr vmdef = NULL;
virQEMUDriverConfigPtr cfg = NULL;
virDomainDeviceDefPtr devConf = NULL;
virDomainDeviceDefPtr devLive = NULL;
int ret = -1;
virCapsPtr caps = NULL;
unsigned int parse_flags = VIR_DOMAIN_DEF_PARSE_INACTIVE |
VIR_DOMAIN_DEF_PARSE_ABI_UPDATE;
virCheckFlags(VIR_DOMAIN_AFFECT_LIVE |
VIR_DOMAIN_AFFECT_CONFIG, -1);
cfg = virQEMUDriverGetConfig(driver);
if (!(caps = virQEMUDriverGetCapabilities(driver, false)))
goto cleanup;
/* The config and live post processing address auto-generation algorithms
* rely on the correct vm->def or vm->newDef being passed, so call the
* device parse based on which definition is in use */
if (flags & VIR_DOMAIN_AFFECT_CONFIG) {
vmdef = virDomainObjCopyPersistentDef(vm, caps, driver->xmlopt);
if (!vmdef)
goto cleanup;
if (!(devConf = virDomainDeviceDefParse(xml, vmdef, caps,
driver->xmlopt, parse_flags)))
goto cleanup;
if (virDomainDefCompatibleDevice(vmdef, devConf, NULL,
VIR_DOMAIN_DEVICE_ACTION_ATTACH,
false) < 0)
goto cleanup;
if ((ret = qemuDomainAttachDeviceConfig(vmdef, devConf, caps,
parse_flags,
driver->xmlopt)) < 0)
goto cleanup;
}
if (flags & VIR_DOMAIN_AFFECT_LIVE) {
if (!(devLive = virDomainDeviceDefParse(xml, vm->def, caps,
driver->xmlopt, parse_flags)))
goto cleanup;
if (virDomainDeviceValidateAliasForHotplug(vm, devLive, flags) < 0)
goto cleanup;
if (virDomainDefCompatibleDevice(vm->def, devLive, NULL,
VIR_DOMAIN_DEVICE_ACTION_ATTACH,
true) < 0)
goto cleanup;
if ((ret = qemuDomainAttachDeviceLive(vm, devLive, driver)) < 0)
goto cleanup;
/*
* update domain status forcibly because the domain status may be
* changed even if we failed to attach the device. For example,
* a new controller may be created.
*/
if (virDomainSaveStatus(driver->xmlopt, cfg->stateDir, vm, driver->caps) < 0) {
ret = -1;
goto cleanup;
}
}
/* Finally, if no error until here, we can save config. */
if (flags & VIR_DOMAIN_AFFECT_CONFIG) {
ret = virDomainSaveConfig(cfg->configDir, driver->caps, vmdef);
if (!ret) {
virDomainObjAssignDef(vm, vmdef, false, NULL);
vmdef = NULL;
}
}
cleanup:
virDomainDefFree(vmdef);
virDomainDeviceDefFree(devConf);
virDomainDeviceDefFree(devLive);
virObjectUnref(cfg);
virObjectUnref(caps);
return ret;
}
static int
qemuDomainAttachDeviceFlags(virDomainPtr dom,
const char *xml,
unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
virDomainObjPtr vm = NULL;
int ret = -1;
virNWFilterReadLockFilterUpdates();
if (!(vm = qemuDomObjFromDomain(dom)))
goto cleanup;
if (virDomainAttachDeviceFlagsEnsureACL(dom->conn, vm->def, flags) < 0)
goto cleanup;
if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_MODIFY) < 0)
goto cleanup;
if (virDomainObjUpdateModificationImpact(vm, &flags) < 0)
goto endjob;
if (qemuDomainAttachDeviceLiveAndConfig(vm, driver, xml, flags) < 0)
goto endjob;
ret = 0;
endjob:
qemuDomainObjEndJob(driver, vm);
cleanup:
virDomainObjEndAPI(&vm);
virNWFilterUnlockFilterUpdates();
return ret;
}
static int qemuDomainAttachDevice(virDomainPtr dom, const char *xml)
{
return qemuDomainAttachDeviceFlags(dom, xml,
VIR_DOMAIN_AFFECT_LIVE);
}
static int qemuDomainUpdateDeviceFlags(virDomainPtr dom,
const char *xml,
unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
virDomainObjPtr vm = NULL;
virDomainDefPtr vmdef = NULL;
virDomainDeviceDefPtr dev = NULL, dev_copy = NULL;
bool force = (flags & VIR_DOMAIN_DEVICE_MODIFY_FORCE) != 0;
int ret = -1;
virQEMUDriverConfigPtr cfg = NULL;
virCapsPtr caps = NULL;
unsigned int parse_flags = 0;
virCheckFlags(VIR_DOMAIN_AFFECT_LIVE |
VIR_DOMAIN_AFFECT_CONFIG |
VIR_DOMAIN_DEVICE_MODIFY_FORCE, -1);
virNWFilterReadLockFilterUpdates();
cfg = virQEMUDriverGetConfig(driver);
if (!(caps = virQEMUDriverGetCapabilities(driver, false)))
goto cleanup;
if (!(vm = qemuDomObjFromDomain(dom)))
goto cleanup;
if (virDomainUpdateDeviceFlagsEnsureACL(dom->conn, vm->def, flags) < 0)
goto cleanup;
if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_MODIFY) < 0)
goto cleanup;
if (virDomainObjUpdateModificationImpact(vm, &flags) < 0)
goto endjob;
if ((flags & VIR_DOMAIN_AFFECT_CONFIG) &&
!(flags & VIR_DOMAIN_AFFECT_LIVE))
parse_flags |= VIR_DOMAIN_DEF_PARSE_INACTIVE;
dev = dev_copy = virDomainDeviceDefParse(xml, vm->def,
caps, driver->xmlopt,
parse_flags);
if (dev == NULL)
goto endjob;
if (flags & VIR_DOMAIN_AFFECT_CONFIG &&
flags & VIR_DOMAIN_AFFECT_LIVE) {
/* If we are affecting both CONFIG and LIVE
* create a deep copy of device as adding
* to CONFIG takes one instance.
*/
dev_copy = virDomainDeviceDefCopy(dev, vm->def, caps, driver->xmlopt);
if (!dev_copy)
goto endjob;
}
if (flags & VIR_DOMAIN_AFFECT_CONFIG) {
/* Make a copy for updated domain. */
vmdef = virDomainObjCopyPersistentDef(vm, caps, driver->xmlopt);
if (!vmdef)
goto endjob;
/* virDomainDefCompatibleDevice call is delayed until we know the
* device we're going to update. */
if ((ret = qemuDomainUpdateDeviceConfig(vmdef, dev, caps,
parse_flags,
driver->xmlopt)) < 0)
goto endjob;
}
if (flags & VIR_DOMAIN_AFFECT_LIVE) {
/* virDomainDefCompatibleDevice call is delayed until we know the
* device we're going to update. */
if ((ret = qemuDomainUpdateDeviceLive(vm, dev_copy, dom, force)) < 0)
goto endjob;
/*
* update domain status forcibly because the domain status may be
* changed even if we failed to attach the device. For example,
* a new controller may be created.
*/
if (virDomainSaveStatus(driver->xmlopt, cfg->stateDir, vm, driver->caps) < 0) {
ret = -1;
goto endjob;
}
}
/* Finally, if no error until here, we can save config. */
if (flags & VIR_DOMAIN_AFFECT_CONFIG) {
ret = virDomainSaveConfig(cfg->configDir, driver->caps, vmdef);
if (!ret) {
virDomainObjAssignDef(vm, vmdef, false, NULL);
vmdef = NULL;
}
}
endjob:
qemuDomainObjEndJob(driver, vm);
cleanup:
virDomainDefFree(vmdef);
if (dev != dev_copy)
virDomainDeviceDefFree(dev_copy);
virDomainDeviceDefFree(dev);
virDomainObjEndAPI(&vm);
virObjectUnref(caps);
virObjectUnref(cfg);
virNWFilterUnlockFilterUpdates();
return ret;
}
static int
qemuDomainDetachDeviceLiveAndConfig(virQEMUDriverPtr driver,
virDomainObjPtr vm,
const char *xml,
unsigned int flags)
{
virCapsPtr caps = NULL;
virQEMUDriverConfigPtr cfg = NULL;
virDomainDeviceDefPtr dev = NULL, dev_copy = NULL;
unsigned int parse_flags = VIR_DOMAIN_DEF_PARSE_SKIP_VALIDATE;
virDomainDefPtr vmdef = NULL;
int ret = -1;
virCheckFlags(VIR_DOMAIN_AFFECT_LIVE |
VIR_DOMAIN_AFFECT_CONFIG, -1);
if (!(caps = virQEMUDriverGetCapabilities(driver, false)))
goto cleanup;
cfg = virQEMUDriverGetConfig(driver);
if ((flags & VIR_DOMAIN_AFFECT_CONFIG) &&
!(flags & VIR_DOMAIN_AFFECT_LIVE))
parse_flags |= VIR_DOMAIN_DEF_PARSE_INACTIVE;
dev = dev_copy = virDomainDeviceDefParse(xml, vm->def,
caps, driver->xmlopt,
parse_flags);
if (dev == NULL)
goto cleanup;
if (flags & VIR_DOMAIN_AFFECT_CONFIG &&
flags & VIR_DOMAIN_AFFECT_LIVE) {
/* If we are affecting both CONFIG and LIVE
* create a deep copy of device as adding
* to CONFIG takes one instance.
*/
dev_copy = virDomainDeviceDefCopy(dev, vm->def, caps, driver->xmlopt);
if (!dev_copy)
goto cleanup;
}
if (flags & VIR_DOMAIN_AFFECT_CONFIG) {
/* Make a copy for updated domain. */
vmdef = virDomainObjCopyPersistentDef(vm, caps, driver->xmlopt);
if (!vmdef)
goto cleanup;
if (qemuDomainDetachDeviceConfig(vmdef, dev, caps,
parse_flags,
driver->xmlopt) < 0)
goto cleanup;
}
if (flags & VIR_DOMAIN_AFFECT_LIVE) {
if (qemuDomainDetachDeviceLive(vm, dev_copy, driver, false) < 0)
goto cleanup;
/*
* update domain status forcibly because the domain status may be
* changed even if we failed to attach the device. For example,
* a new controller may be created.
*/
if (virDomainSaveStatus(driver->xmlopt, cfg->stateDir, vm, caps) < 0)
goto cleanup;
}
/* Finally, if no error until here, we can save config. */
if (flags & VIR_DOMAIN_AFFECT_CONFIG) {
if (virDomainSaveConfig(cfg->configDir, caps, vmdef) < 0)
goto cleanup;
virDomainObjAssignDef(vm, vmdef, false, NULL);
vmdef = NULL;
}
ret = 0;
cleanup:
virObjectUnref(caps);
virObjectUnref(cfg);
if (dev != dev_copy)
virDomainDeviceDefFree(dev_copy);
virDomainDeviceDefFree(dev);
virDomainDefFree(vmdef);
return ret;
}
static int
qemuDomainDetachDeviceAliasLiveAndConfig(virQEMUDriverPtr driver,
virDomainObjPtr vm,
const char *alias,
unsigned int flags)
{
virCapsPtr caps = NULL;
virQEMUDriverConfigPtr cfg = NULL;
virDomainDefPtr def = NULL;
virDomainDefPtr persistentDef = NULL;
virDomainDefPtr vmdef = NULL;
unsigned int parse_flags = VIR_DOMAIN_DEF_PARSE_SKIP_VALIDATE;
int ret = -1;
virCheckFlags(VIR_DOMAIN_AFFECT_LIVE |
VIR_DOMAIN_AFFECT_CONFIG, -1);
if (!(caps = virQEMUDriverGetCapabilities(driver, false)))
goto cleanup;
cfg = virQEMUDriverGetConfig(driver);
if ((flags & VIR_DOMAIN_AFFECT_CONFIG) &&
!(flags & VIR_DOMAIN_AFFECT_LIVE))
parse_flags |= VIR_DOMAIN_DEF_PARSE_INACTIVE;
if (virDomainObjGetDefs(vm, flags, &def, &persistentDef) < 0)
goto cleanup;
if (persistentDef) {
virDomainDeviceDef dev;
if (!(vmdef = virDomainObjCopyPersistentDef(vm, caps, driver->xmlopt)))
goto cleanup;
if (virDomainDefFindDevice(vmdef, alias, &dev, true) < 0)
goto cleanup;
if (qemuDomainDetachDeviceConfig(vmdef, &dev, caps,
parse_flags, driver->xmlopt) < 0)
goto cleanup;
}
if (def) {
virDomainDeviceDef dev;
if (virDomainDefFindDevice(def, alias, &dev, true) < 0)
goto cleanup;
if (qemuDomainDetachDeviceLive(vm, &dev, driver, true) < 0)
goto cleanup;
}
if (vmdef) {
if (virDomainSaveConfig(cfg->configDir, caps, vmdef) < 0)
goto cleanup;
virDomainObjAssignDef(vm, vmdef, false, NULL);
vmdef = NULL;
}
ret = 0;
cleanup:
virDomainDefFree(vmdef);
virObjectUnref(cfg);
virObjectUnref(caps);
return ret;
}
static int
qemuDomainDetachDeviceFlags(virDomainPtr dom,
const char *xml,
unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
virDomainObjPtr vm = NULL;
int ret = -1;
if (!(vm = qemuDomObjFromDomain(dom)))
goto cleanup;
if (virDomainDetachDeviceFlagsEnsureACL(dom->conn, vm->def, flags) < 0)
goto cleanup;
if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_MODIFY) < 0)
goto cleanup;
if (virDomainObjUpdateModificationImpact(vm, &flags) < 0)
goto endjob;
if (qemuDomainDetachDeviceLiveAndConfig(driver, vm, xml, flags) < 0)
goto endjob;
ret = 0;
endjob:
qemuDomainObjEndJob(driver, vm);
cleanup:
virDomainObjEndAPI(&vm);
return ret;
}
static int
qemuDomainDetachDeviceAlias(virDomainPtr dom,
const char *alias,
unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
virDomainObjPtr vm = NULL;
int ret = -1;
if (!(vm = qemuDomObjFromDomain(dom)))
goto cleanup;
if (virDomainDetachDeviceAliasEnsureACL(dom->conn, vm->def, flags) < 0)
goto cleanup;
if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_MODIFY) < 0)
goto cleanup;
if (virDomainObjUpdateModificationImpact(vm, &flags) < 0)
goto endjob;
if (qemuDomainDetachDeviceAliasLiveAndConfig(driver, vm, alias, flags) < 0)
goto endjob;
ret = 0;
endjob:
qemuDomainObjEndJob(driver, vm);
cleanup:
virDomainObjEndAPI(&vm);
return ret;
}
static int qemuDomainDetachDevice(virDomainPtr dom, const char *xml)
{
return qemuDomainDetachDeviceFlags(dom, xml,
VIR_DOMAIN_AFFECT_LIVE);
}
static int qemuDomainGetAutostart(virDomainPtr dom,
int *autostart)
{
virDomainObjPtr vm;
int ret = -1;
if (!(vm = qemuDomObjFromDomain(dom)))
goto cleanup;
if (virDomainGetAutostartEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
*autostart = vm->autostart;
ret = 0;
cleanup:
virDomainObjEndAPI(&vm);
return ret;
}
static int qemuDomainSetAutostart(virDomainPtr dom,
int autostart)
{
virQEMUDriverPtr driver = dom->conn->privateData;
virDomainObjPtr vm;
char *configFile = NULL, *autostartLink = NULL;
int ret = -1;
virQEMUDriverConfigPtr cfg = NULL;
if (!(vm = qemuDomObjFromDomain(dom)))
return -1;
cfg = virQEMUDriverGetConfig(driver);
if (virDomainSetAutostartEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
if (!vm->persistent) {
virReportError(VIR_ERR_OPERATION_INVALID,
"%s", _("cannot set autostart for transient domain"));
goto cleanup;
}
autostart = (autostart != 0);
if (vm->autostart != autostart) {
if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_MODIFY) < 0)
goto cleanup;
if (!(configFile = virDomainConfigFile(cfg->configDir, vm->def->name)))
goto endjob;
if (!(autostartLink = virDomainConfigFile(cfg->autostartDir,
vm->def->name)))
goto endjob;
if (autostart) {
if (virFileMakePath(cfg->autostartDir) < 0) {
virReportSystemError(errno,
_("cannot create autostart directory %s"),
cfg->autostartDir);
goto endjob;
}
if (symlink(configFile, autostartLink) < 0) {
virReportSystemError(errno,
_("Failed to create symlink '%s to '%s'"),
autostartLink, configFile);
goto endjob;
}
} else {
if (unlink(autostartLink) < 0 &&
errno != ENOENT &&
errno != ENOTDIR) {
virReportSystemError(errno,
_("Failed to delete symlink '%s'"),
autostartLink);
goto endjob;
}
}
vm->autostart = autostart;
endjob:
qemuDomainObjEndJob(driver, vm);
}
ret = 0;
cleanup:
VIR_FREE(configFile);
VIR_FREE(autostartLink);
virDomainObjEndAPI(&vm);
virObjectUnref(cfg);
return ret;
}
static char *qemuDomainGetSchedulerType(virDomainPtr dom,
int *nparams)
{
char *ret = NULL;
virDomainObjPtr vm = NULL;
qemuDomainObjPrivatePtr priv;
virQEMUDriverPtr driver = dom->conn->privateData;
if (!(vm = qemuDomObjFromDomain(dom)))
goto cleanup;
priv = vm->privateData;
if (virDomainGetSchedulerTypeEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
if (!virQEMUDriverIsPrivileged(driver)) {
virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s",
_("CPU tuning is not available in session mode"));
goto cleanup;
}
/* Domain not running, thus no cgroups - return defaults */
if (!virDomainObjIsActive(vm)) {
if (nparams)
*nparams = 9;
ignore_value(VIR_STRDUP(ret, "posix"));
goto cleanup;
}
if (!virCgroupHasController(priv->cgroup, VIR_CGROUP_CONTROLLER_CPU)) {
virReportError(VIR_ERR_OPERATION_INVALID,
"%s", _("cgroup CPU controller is not mounted"));
goto cleanup;
}
if (nparams) {
if (virCgroupSupportsCpuBW(priv->cgroup))
*nparams = 9;
else
*nparams = 1;
}
ignore_value(VIR_STRDUP(ret, "posix"));
cleanup:
virDomainObjEndAPI(&vm);
return ret;
}
/* blkioDeviceStr in the form of /device/path,weight,/device/path,weight
* for example, /dev/disk/by-path/pci-0000:00:1f.2-scsi-0:0:0:0,800
*/
static int
qemuDomainParseBlkioDeviceStr(char *blkioDeviceStr, const char *type,
virBlkioDevicePtr *dev, size_t *size)
{
char *temp;
int ndevices = 0;
int nsep = 0;
size_t i;
virBlkioDevicePtr result = NULL;
*dev = NULL;
*size = 0;
if (STREQ(blkioDeviceStr, ""))
return 0;
temp = blkioDeviceStr;
while (temp) {
temp = strchr(temp, ',');
if (temp) {
temp++;
nsep++;
}
}
/* A valid string must have even number of fields, hence an odd
* number of commas. */
if (!(nsep & 1))
goto parse_error;
ndevices = (nsep + 1) / 2;
if (VIR_ALLOC_N(result, ndevices) < 0)
return -1;
i = 0;
temp = blkioDeviceStr;
while (temp) {
char *p = temp;
/* device path */
p = strchr(p, ',');
if (!p)
goto parse_error;
if (VIR_STRNDUP(result[i].path, temp, p - temp) < 0)
goto cleanup;
/* value */
temp = p + 1;
if (STREQ(type, VIR_DOMAIN_BLKIO_DEVICE_WEIGHT)) {
if (virStrToLong_uip(temp, &p, 10, &result[i].weight) < 0)
goto number_error;
} else if (STREQ(type, VIR_DOMAIN_BLKIO_DEVICE_READ_IOPS)) {
if (virStrToLong_uip(temp, &p, 10, &result[i].riops) < 0)
goto number_error;
} else if (STREQ(type, VIR_DOMAIN_BLKIO_DEVICE_WRITE_IOPS)) {
if (virStrToLong_uip(temp, &p, 10, &result[i].wiops) < 0)
goto number_error;
} else if (STREQ(type, VIR_DOMAIN_BLKIO_DEVICE_READ_BPS)) {
if (virStrToLong_ullp(temp, &p, 10, &result[i].rbps) < 0)
goto number_error;
} else if (STREQ(type, VIR_DOMAIN_BLKIO_DEVICE_WRITE_BPS)) {
if (virStrToLong_ullp(temp, &p, 10, &result[i].wbps) < 0)
goto number_error;
} else {
virReportError(VIR_ERR_INVALID_ARG,
_("unknown parameter '%s'"), type);
goto cleanup;
}
i++;
if (*p == '\0')
break;
else if (*p != ',')
goto parse_error;
temp = p + 1;
}
if (!i)
VIR_FREE(result);
*dev = result;
*size = i;
return 0;
parse_error:
virReportError(VIR_ERR_INVALID_ARG,
_("unable to parse blkio device '%s' '%s'"),
type, blkioDeviceStr);
goto cleanup;
number_error:
virReportError(VIR_ERR_INVALID_ARG,
_("invalid value '%s' for parameter '%s' of device '%s'"),
temp, type, result[i].path);
cleanup:
if (result) {
virBlkioDeviceArrayClear(result, ndevices);
VIR_FREE(result);
}
return -1;
}
/* Modify dest_array to reflect all blkio device changes described in
* src_array. */
static int
qemuDomainMergeBlkioDevice(virBlkioDevicePtr *dest_array,
size_t *dest_size,
virBlkioDevicePtr src_array,
size_t src_size,
const char *type)
{
size_t i, j;
virBlkioDevicePtr dest, src;
for (i = 0; i < src_size; i++) {
bool found = false;
src = &src_array[i];
for (j = 0; j < *dest_size; j++) {
dest = &(*dest_array)[j];
if (STREQ(src->path, dest->path)) {
found = true;
if (STREQ(type, VIR_DOMAIN_BLKIO_DEVICE_WEIGHT)) {
dest->weight = src->weight;
} else if (STREQ(type, VIR_DOMAIN_BLKIO_DEVICE_READ_IOPS)) {
dest->riops = src->riops;
} else if (STREQ(type, VIR_DOMAIN_BLKIO_DEVICE_WRITE_IOPS)) {
dest->wiops = src->wiops;
} else if (STREQ(type, VIR_DOMAIN_BLKIO_DEVICE_READ_BPS)) {
dest->rbps = src->rbps;
} else if (STREQ(type, VIR_DOMAIN_BLKIO_DEVICE_WRITE_BPS)) {
dest->wbps = src->wbps;
} else {
virReportError(VIR_ERR_INVALID_ARG, _("Unknown parameter %s"),
type);
return -1;
}
break;
}
}
if (!found) {
if (!src->weight && !src->riops && !src->wiops && !src->rbps && !src->wbps)
continue;
if (VIR_EXPAND_N(*dest_array, *dest_size, 1) < 0)
return -1;
dest = &(*dest_array)[*dest_size - 1];
if (STREQ(type, VIR_DOMAIN_BLKIO_DEVICE_WEIGHT)) {
dest->weight = src->weight;
} else if (STREQ(type, VIR_DOMAIN_BLKIO_DEVICE_READ_IOPS)) {
dest->riops = src->riops;
} else if (STREQ(type, VIR_DOMAIN_BLKIO_DEVICE_WRITE_IOPS)) {
dest->wiops = src->wiops;
} else if (STREQ(type, VIR_DOMAIN_BLKIO_DEVICE_READ_BPS)) {
dest->rbps = src->rbps;
} else if (STREQ(type, VIR_DOMAIN_BLKIO_DEVICE_WRITE_BPS)) {
dest->wbps = src->wbps;
} else {
*dest_size = *dest_size - 1;
return -1;
}
dest->path = src->path;
src->path = NULL;
}
}
return 0;
}
static int
qemuDomainSetBlkioParameters(virDomainPtr dom,
virTypedParameterPtr params,
int nparams,
unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
size_t i;
virDomainObjPtr vm = NULL;
virDomainDefPtr def;
virDomainDefPtr persistentDef;
int ret = -1;
virQEMUDriverConfigPtr cfg = NULL;
qemuDomainObjPrivatePtr priv;
virCheckFlags(VIR_DOMAIN_AFFECT_LIVE |
VIR_DOMAIN_AFFECT_CONFIG, -1);
if (virTypedParamsValidate(params, nparams,
VIR_DOMAIN_BLKIO_WEIGHT,
VIR_TYPED_PARAM_UINT,
VIR_DOMAIN_BLKIO_DEVICE_WEIGHT,
VIR_TYPED_PARAM_STRING,
VIR_DOMAIN_BLKIO_DEVICE_READ_IOPS,
VIR_TYPED_PARAM_STRING,
VIR_DOMAIN_BLKIO_DEVICE_WRITE_IOPS,
VIR_TYPED_PARAM_STRING,
VIR_DOMAIN_BLKIO_DEVICE_READ_BPS,
VIR_TYPED_PARAM_STRING,
VIR_DOMAIN_BLKIO_DEVICE_WRITE_BPS,
VIR_TYPED_PARAM_STRING,
NULL) < 0)
return -1;
if (!(vm = qemuDomObjFromDomain(dom)))
return -1;
priv = vm->privateData;
cfg = virQEMUDriverGetConfig(driver);
if (virDomainSetBlkioParametersEnsureACL(dom->conn, vm->def, flags) < 0)
goto cleanup;
if (!virQEMUDriverIsPrivileged(driver)) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("Block I/O tuning is not available in session mode"));
goto cleanup;
}
if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_MODIFY) < 0)
goto cleanup;
if (virDomainObjGetDefs(vm, flags, &def, &persistentDef) < 0)
goto endjob;
if (flags & VIR_DOMAIN_AFFECT_LIVE) {
if (!virCgroupHasController(priv->cgroup, VIR_CGROUP_CONTROLLER_BLKIO)) {
virReportError(VIR_ERR_OPERATION_INVALID, "%s",
_("blkio cgroup isn't mounted"));
goto endjob;
}
}
ret = 0;
if (def) {
for (i = 0; i < nparams; i++) {
virTypedParameterPtr param = ¶ms[i];
if (STREQ(param->field, VIR_DOMAIN_BLKIO_WEIGHT)) {
if (virCgroupSetBlkioWeight(priv->cgroup, param->value.ui) < 0 ||
virCgroupGetBlkioWeight(priv->cgroup, &def->blkio.weight) < 0)
ret = -1;
} else if (STREQ(param->field, VIR_DOMAIN_BLKIO_DEVICE_WEIGHT) ||
STREQ(param->field, VIR_DOMAIN_BLKIO_DEVICE_READ_IOPS) ||
STREQ(param->field, VIR_DOMAIN_BLKIO_DEVICE_WRITE_IOPS) ||
STREQ(param->field, VIR_DOMAIN_BLKIO_DEVICE_READ_BPS) ||
STREQ(param->field, VIR_DOMAIN_BLKIO_DEVICE_WRITE_BPS)) {
size_t ndevices;
virBlkioDevicePtr devices = NULL;
size_t j;
if (qemuDomainParseBlkioDeviceStr(param->value.s,
param->field,
&devices,
&ndevices) < 0) {
ret = -1;
continue;
}
if (STREQ(param->field, VIR_DOMAIN_BLKIO_DEVICE_WEIGHT)) {
for (j = 0; j < ndevices; j++) {
if (virCgroupSetBlkioDeviceWeight(priv->cgroup,
devices[j].path,
devices[j].weight) < 0 ||
virCgroupGetBlkioDeviceWeight(priv->cgroup,
devices[j].path,
&devices[j].weight) < 0) {
ret = -1;
break;
}
}
} else if (STREQ(param->field, VIR_DOMAIN_BLKIO_DEVICE_READ_IOPS)) {
for (j = 0; j < ndevices; j++) {
if (virCgroupSetBlkioDeviceReadIops(priv->cgroup,
devices[j].path,
devices[j].riops) < 0 ||
virCgroupGetBlkioDeviceReadIops(priv->cgroup,
devices[j].path,
&devices[j].riops) < 0) {
ret = -1;
break;
}
}
} else if (STREQ(param->field, VIR_DOMAIN_BLKIO_DEVICE_WRITE_IOPS)) {
for (j = 0; j < ndevices; j++) {
if (virCgroupSetBlkioDeviceWriteIops(priv->cgroup,
devices[j].path,
devices[j].wiops) < 0 ||
virCgroupGetBlkioDeviceWriteIops(priv->cgroup,
devices[j].path,
&devices[j].wiops) < 0) {
ret = -1;
break;
}
}
} else if (STREQ(param->field, VIR_DOMAIN_BLKIO_DEVICE_READ_BPS)) {
for (j = 0; j < ndevices; j++) {
if (virCgroupSetBlkioDeviceReadBps(priv->cgroup,
devices[j].path,
devices[j].rbps) < 0 ||
virCgroupGetBlkioDeviceReadBps(priv->cgroup,
devices[j].path,
&devices[j].rbps) < 0) {
ret = -1;
break;
}
}
} else if (STREQ(param->field, VIR_DOMAIN_BLKIO_DEVICE_WRITE_BPS)) {
for (j = 0; j < ndevices; j++) {
if (virCgroupSetBlkioDeviceWriteBps(priv->cgroup,
devices[j].path,
devices[j].wbps) < 0 ||
virCgroupGetBlkioDeviceWriteBps(priv->cgroup,
devices[j].path,
&devices[j].wbps) < 0) {
ret = -1;
break;
}
}
} else {
virReportError(VIR_ERR_INVALID_ARG, _("Unknown blkio parameter %s"),
param->field);
ret = -1;
virBlkioDeviceArrayClear(devices, ndevices);
VIR_FREE(devices);
continue;
}
if (j != ndevices ||
qemuDomainMergeBlkioDevice(&def->blkio.devices,
&def->blkio.ndevices,
devices, ndevices, param->field) < 0)
ret = -1;
virBlkioDeviceArrayClear(devices, ndevices);
VIR_FREE(devices);
}
}
if (virDomainSaveStatus(driver->xmlopt, cfg->stateDir, vm, driver->caps) < 0)
goto endjob;
}
if (ret < 0)
goto endjob;
if (persistentDef) {
for (i = 0; i < nparams; i++) {
virTypedParameterPtr param = ¶ms[i];
if (STREQ(param->field, VIR_DOMAIN_BLKIO_WEIGHT)) {
persistentDef->blkio.weight = param->value.ui;
} else if (STREQ(param->field, VIR_DOMAIN_BLKIO_DEVICE_WEIGHT) ||
STREQ(param->field, VIR_DOMAIN_BLKIO_DEVICE_READ_IOPS) ||
STREQ(param->field, VIR_DOMAIN_BLKIO_DEVICE_WRITE_IOPS) ||
STREQ(param->field, VIR_DOMAIN_BLKIO_DEVICE_READ_BPS) ||
STREQ(param->field, VIR_DOMAIN_BLKIO_DEVICE_WRITE_BPS)) {
virBlkioDevicePtr devices = NULL;
size_t ndevices;
if (qemuDomainParseBlkioDeviceStr(param->value.s,
param->field,
&devices,
&ndevices) < 0) {
ret = -1;
continue;
}
if (qemuDomainMergeBlkioDevice(&persistentDef->blkio.devices,
&persistentDef->blkio.ndevices,
devices, ndevices, param->field) < 0)
ret = -1;
virBlkioDeviceArrayClear(devices, ndevices);
VIR_FREE(devices);
}
}
if (virDomainSaveConfig(cfg->configDir, driver->caps, persistentDef) < 0)
ret = -1;
}
endjob:
qemuDomainObjEndJob(driver, vm);
cleanup:
virDomainObjEndAPI(&vm);
virObjectUnref(cfg);
return ret;
}
static int
qemuDomainGetBlkioParameters(virDomainPtr dom,
virTypedParameterPtr params,
int *nparams,
unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
virDomainObjPtr vm = NULL;
virDomainDefPtr def = NULL;
virDomainDefPtr persistentDef = NULL;
int maxparams = QEMU_NB_BLKIO_PARAM;
unsigned int val;
int ret = -1;
qemuDomainObjPrivatePtr priv;
virCheckFlags(VIR_DOMAIN_AFFECT_LIVE |
VIR_DOMAIN_AFFECT_CONFIG |
VIR_TYPED_PARAM_STRING_OKAY, -1);
/* We blindly return a string, and let libvirt.c and
* remote_driver.c do the filtering on behalf of older clients
* that can't parse it. */
flags &= ~VIR_TYPED_PARAM_STRING_OKAY;
if (!(vm = qemuDomObjFromDomain(dom)))
return -1;
priv = vm->privateData;
if (virDomainGetBlkioParametersEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
if (!virQEMUDriverIsPrivileged(driver)) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("Block I/O tuning is not available in session mode"));
goto cleanup;
}
if ((*nparams) == 0) {
/* Current number of blkio parameters supported by cgroups */
*nparams = QEMU_NB_BLKIO_PARAM;
ret = 0;
goto cleanup;
} else if (*nparams < maxparams) {
maxparams = *nparams;
}
*nparams = 0;
if (virDomainObjGetDefs(vm, flags, &def, &persistentDef) < 0)
goto cleanup;
if (def) {
if (!virCgroupHasController(priv->cgroup, VIR_CGROUP_CONTROLLER_BLKIO)) {
virReportError(VIR_ERR_OPERATION_INVALID, "%s",
_("blkio cgroup isn't mounted"));
goto cleanup;
}
/* fill blkio weight here */
if (virCgroupGetBlkioWeight(priv->cgroup, &val) < 0)
goto cleanup;
if (virTypedParameterAssign(&(params[(*nparams)++]),
VIR_DOMAIN_BLKIO_WEIGHT,
VIR_TYPED_PARAM_UINT, val) < 0)
goto cleanup;
if (virDomainGetBlkioParametersAssignFromDef(def, params, nparams,
maxparams) < 0)
goto cleanup;
} else if (persistentDef) {
/* fill blkio weight here */
if (virTypedParameterAssign(&(params[(*nparams)++]),
VIR_DOMAIN_BLKIO_WEIGHT,
VIR_TYPED_PARAM_UINT,
persistentDef->blkio.weight) < 0)
goto cleanup;
if (virDomainGetBlkioParametersAssignFromDef(persistentDef, params,
nparams, maxparams) < 0)
goto cleanup;
}
ret = 0;
cleanup:
virDomainObjEndAPI(&vm);
return ret;
}
static int
qemuDomainSetMemoryParameters(virDomainPtr dom,
virTypedParameterPtr params,
int nparams,
unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
virDomainDefPtr def = NULL;
virDomainDefPtr persistentDef = NULL;
virDomainObjPtr vm = NULL;
unsigned long long swap_hard_limit;
unsigned long long hard_limit = 0;
unsigned long long soft_limit = 0;
bool set_swap_hard_limit = false;
bool set_hard_limit = false;
bool set_soft_limit = false;
virQEMUDriverConfigPtr cfg = NULL;
int rc;
int ret = -1;
qemuDomainObjPrivatePtr priv;
virCheckFlags(VIR_DOMAIN_AFFECT_LIVE |
VIR_DOMAIN_AFFECT_CONFIG, -1);
if (virTypedParamsValidate(params, nparams,
VIR_DOMAIN_MEMORY_HARD_LIMIT,
VIR_TYPED_PARAM_ULLONG,
VIR_DOMAIN_MEMORY_SOFT_LIMIT,
VIR_TYPED_PARAM_ULLONG,
VIR_DOMAIN_MEMORY_SWAP_HARD_LIMIT,
VIR_TYPED_PARAM_ULLONG,
NULL) < 0)
return -1;
if (!(vm = qemuDomObjFromDomain(dom)))
return -1;
priv = vm->privateData;
cfg = virQEMUDriverGetConfig(driver);
if (virDomainSetMemoryParametersEnsureACL(dom->conn, vm->def, flags) < 0)
goto cleanup;
if (!virQEMUDriverIsPrivileged(driver)) {
virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s",
_("Memory tuning is not available in session mode"));
goto cleanup;
}
if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_MODIFY) < 0)
goto cleanup;
/* QEMU and LXC implementation are identical */
if (virDomainObjGetDefs(vm, flags, &def, &persistentDef) < 0)
goto endjob;
if (def &&
!virCgroupHasController(priv->cgroup, VIR_CGROUP_CONTROLLER_MEMORY)) {
virReportError(VIR_ERR_OPERATION_INVALID, "%s",
_("cgroup memory controller is not mounted"));
goto endjob;
}
#define VIR_GET_LIMIT_PARAMETER(PARAM, VALUE) \
if ((rc = virTypedParamsGetULLong(params, nparams, PARAM, &VALUE)) < 0) \
goto endjob; \
\
if (rc == 1) \
set_ ## VALUE = true;
VIR_GET_LIMIT_PARAMETER(VIR_DOMAIN_MEMORY_SWAP_HARD_LIMIT, swap_hard_limit)
VIR_GET_LIMIT_PARAMETER(VIR_DOMAIN_MEMORY_HARD_LIMIT, hard_limit)
VIR_GET_LIMIT_PARAMETER(VIR_DOMAIN_MEMORY_SOFT_LIMIT, soft_limit)
#undef VIR_GET_LIMIT_PARAMETER
/* Swap hard limit must be greater than hard limit. */
if (set_swap_hard_limit || set_hard_limit) {
unsigned long long mem_limit = vm->def->mem.hard_limit;
unsigned long long swap_limit = vm->def->mem.swap_hard_limit;
if (set_swap_hard_limit)
swap_limit = swap_hard_limit;
if (set_hard_limit)
mem_limit = hard_limit;
if (mem_limit > swap_limit) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("memory hard_limit tunable value must be lower "
"than or equal to swap_hard_limit"));
goto endjob;
}
}
#define VIR_SET_MEM_PARAMETER(FUNC, VALUE) \
if (set_ ## VALUE) { \
if (def) { \
if ((rc = FUNC(priv->cgroup, VALUE)) < 0) \
goto endjob; \
def->mem.VALUE = VALUE; \
} \
\
if (persistentDef) \
persistentDef->mem.VALUE = VALUE; \
}
/* Soft limit doesn't clash with the others */
VIR_SET_MEM_PARAMETER(virCgroupSetMemorySoftLimit, soft_limit);
/* set hard limit before swap hard limit if decreasing it */
if (def && def->mem.hard_limit > hard_limit) {
VIR_SET_MEM_PARAMETER(virCgroupSetMemoryHardLimit, hard_limit);
/* inhibit changing the limit a second time */
set_hard_limit = false;
}
VIR_SET_MEM_PARAMETER(virCgroupSetMemSwapHardLimit, swap_hard_limit);
/* otherwise increase it after swap hard limit */
VIR_SET_MEM_PARAMETER(virCgroupSetMemoryHardLimit, hard_limit);
#undef VIR_SET_MEM_PARAMETER
if (def &&
virDomainSaveStatus(driver->xmlopt, cfg->stateDir, vm, driver->caps) < 0)
goto endjob;
if (persistentDef &&
virDomainSaveConfig(cfg->configDir, driver->caps, persistentDef) < 0)
goto endjob;
/* QEMU and LXC implementations are identical */
ret = 0;
endjob:
qemuDomainObjEndJob(driver, vm);
cleanup:
virDomainObjEndAPI(&vm);
virObjectUnref(cfg);
return ret;
}
#define QEMU_ASSIGN_MEM_PARAM(index, name, value) \
if (index < *nparams && \
virTypedParameterAssign(¶ms[index], name, VIR_TYPED_PARAM_ULLONG, \
value) < 0) \
goto cleanup
static int
qemuDomainGetMemoryParameters(virDomainPtr dom,
virTypedParameterPtr params,
int *nparams,
unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
virDomainObjPtr vm = NULL;
virDomainDefPtr persistentDef = NULL;
int ret = -1;
qemuDomainObjPrivatePtr priv;
unsigned long long swap_hard_limit, mem_hard_limit, mem_soft_limit;
virCheckFlags(VIR_DOMAIN_AFFECT_LIVE |
VIR_DOMAIN_AFFECT_CONFIG |
VIR_TYPED_PARAM_STRING_OKAY, -1);
if (!(vm = qemuDomObjFromDomain(dom)))
return -1;
priv = vm->privateData;
if (virDomainGetMemoryParametersEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
if (!virQEMUDriverIsPrivileged(driver)) {
virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s",
_("Memory tuning is not available in session mode"));
goto cleanup;
}
if (virDomainObjGetDefs(vm, flags, NULL, &persistentDef) < 0)
goto cleanup;
if ((*nparams) == 0) {
/* Current number of memory parameters supported by cgroups */
*nparams = QEMU_NB_MEM_PARAM;
ret = 0;
goto cleanup;
}
if (persistentDef) {
mem_hard_limit = persistentDef->mem.hard_limit;
mem_soft_limit = persistentDef->mem.soft_limit;
swap_hard_limit = persistentDef->mem.swap_hard_limit;
} else {
if (!virCgroupHasController(priv->cgroup, VIR_CGROUP_CONTROLLER_MEMORY)) {
virReportError(VIR_ERR_OPERATION_INVALID,
"%s", _("cgroup memory controller is not mounted"));
goto cleanup;
}
if (virCgroupGetMemoryHardLimit(priv->cgroup, &mem_hard_limit) < 0)
goto cleanup;
if (virCgroupGetMemorySoftLimit(priv->cgroup, &mem_soft_limit) < 0)
goto cleanup;
if (virCgroupGetMemSwapHardLimit(priv->cgroup, &swap_hard_limit) < 0) {
if (!virLastErrorIsSystemErrno(ENOENT) &&
!virLastErrorIsSystemErrno(EOPNOTSUPP))
goto cleanup;
swap_hard_limit = VIR_DOMAIN_MEMORY_PARAM_UNLIMITED;
}
}
QEMU_ASSIGN_MEM_PARAM(0, VIR_DOMAIN_MEMORY_HARD_LIMIT, mem_hard_limit);
QEMU_ASSIGN_MEM_PARAM(1, VIR_DOMAIN_MEMORY_SOFT_LIMIT, mem_soft_limit);
QEMU_ASSIGN_MEM_PARAM(2, VIR_DOMAIN_MEMORY_SWAP_HARD_LIMIT, swap_hard_limit);
if (QEMU_NB_MEM_PARAM < *nparams)
*nparams = QEMU_NB_MEM_PARAM;
ret = 0;
cleanup:
virDomainObjEndAPI(&vm);
return ret;
}
#undef QEMU_ASSIGN_MEM_PARAM
static int
qemuDomainSetNumaParamsLive(virDomainObjPtr vm,
virBitmapPtr nodeset)
{
virCgroupPtr cgroup_temp = NULL;
qemuDomainObjPrivatePtr priv = vm->privateData;
char *nodeset_str = NULL;
virDomainNumatuneMemMode mode;
size_t i = 0;
int ret = -1;
if (virDomainNumatuneGetMode(vm->def->numa, -1, &mode) == 0 &&
mode != VIR_DOMAIN_NUMATUNE_MEM_STRICT) {
virReportError(VIR_ERR_OPERATION_INVALID, "%s",
_("change of nodeset for running domain "
"requires strict numa mode"));
goto cleanup;
}
if (!virNumaNodesetIsAvailable(nodeset))
goto cleanup;
/* Ensure the cpuset string is formatted before passing to cgroup */
if (!(nodeset_str = virBitmapFormat(nodeset)))
goto cleanup;
if (virCgroupNewThread(priv->cgroup, VIR_CGROUP_THREAD_EMULATOR, 0,
false, &cgroup_temp) < 0 ||
virCgroupSetCpusetMems(cgroup_temp, nodeset_str) < 0)
goto cleanup;
virCgroupFree(&cgroup_temp);
for (i = 0; i < virDomainDefGetVcpusMax(vm->def); i++) {
virDomainVcpuDefPtr vcpu = virDomainDefGetVcpu(vm->def, i);
if (!vcpu->online)
continue;
if (virCgroupNewThread(priv->cgroup, VIR_CGROUP_THREAD_VCPU, i,
false, &cgroup_temp) < 0 ||
virCgroupSetCpusetMems(cgroup_temp, nodeset_str) < 0)
goto cleanup;
virCgroupFree(&cgroup_temp);
}
for (i = 0; i < vm->def->niothreadids; i++) {
if (virCgroupNewThread(priv->cgroup, VIR_CGROUP_THREAD_IOTHREAD,
vm->def->iothreadids[i]->iothread_id,
false, &cgroup_temp) < 0 ||
virCgroupSetCpusetMems(cgroup_temp, nodeset_str) < 0)
goto cleanup;
virCgroupFree(&cgroup_temp);
}
ret = 0;
cleanup:
VIR_FREE(nodeset_str);
virCgroupFree(&cgroup_temp);
return ret;
}
static int
qemuDomainSetNumaParameters(virDomainPtr dom,
virTypedParameterPtr params,
int nparams,
unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
size_t i;
virDomainDefPtr def;
virDomainDefPtr persistentDef;
virDomainObjPtr vm = NULL;
int ret = -1;
virQEMUDriverConfigPtr cfg = NULL;
qemuDomainObjPrivatePtr priv;
virBitmapPtr nodeset = NULL;
virDomainNumatuneMemMode config_mode;
int mode = -1;
virCheckFlags(VIR_DOMAIN_AFFECT_LIVE |
VIR_DOMAIN_AFFECT_CONFIG, -1);
if (virTypedParamsValidate(params, nparams,
VIR_DOMAIN_NUMA_MODE,
VIR_TYPED_PARAM_INT,
VIR_DOMAIN_NUMA_NODESET,
VIR_TYPED_PARAM_STRING,
NULL) < 0)
return -1;
if (!(vm = qemuDomObjFromDomain(dom)))
return -1;
priv = vm->privateData;
cfg = virQEMUDriverGetConfig(driver);
if (virDomainSetNumaParametersEnsureACL(dom->conn, vm->def, flags) < 0)
goto cleanup;
for (i = 0; i < nparams; i++) {
virTypedParameterPtr param = ¶ms[i];
if (STREQ(param->field, VIR_DOMAIN_NUMA_MODE)) {
mode = param->value.i;
if (mode < 0 || mode >= VIR_DOMAIN_NUMATUNE_MEM_LAST) {
virReportError(VIR_ERR_INVALID_ARG,
_("unsupported numatune mode: '%d'"), mode);
goto cleanup;
}
} else if (STREQ(param->field, VIR_DOMAIN_NUMA_NODESET)) {
if (virBitmapParse(param->value.s, &nodeset,
VIR_DOMAIN_CPUMASK_LEN) < 0)
goto cleanup;
if (virBitmapIsAllClear(nodeset)) {
virReportError(VIR_ERR_OPERATION_INVALID,
_("Invalid nodeset of 'numatune': %s"),
param->value.s);
goto cleanup;
}
}
}
if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_MODIFY) < 0)
goto cleanup;
if (virDomainObjGetDefs(vm, flags, &def, &persistentDef) < 0)
goto endjob;
if (def) {
if (!virQEMUDriverIsPrivileged(driver)) {
virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s",
_("NUMA tuning is not available in session mode"));
goto endjob;
}
if (!virCgroupHasController(priv->cgroup, VIR_CGROUP_CONTROLLER_CPUSET)) {
virReportError(VIR_ERR_OPERATION_INVALID, "%s",
_("cgroup cpuset controller is not mounted"));
goto endjob;
}
if (mode != -1 &&
virDomainNumatuneGetMode(def->numa, -1, &config_mode) == 0 &&
config_mode != mode) {
virReportError(VIR_ERR_OPERATION_INVALID, "%s",
_("can't change numatune mode for running domain"));
goto endjob;
}
if (nodeset &&
qemuDomainSetNumaParamsLive(vm, nodeset) < 0)
goto endjob;
if (virDomainNumatuneSet(def->numa,
def->placement_mode ==
VIR_DOMAIN_CPU_PLACEMENT_MODE_STATIC,
-1, mode, nodeset) < 0)
goto endjob;
if (virDomainSaveStatus(driver->xmlopt, cfg->stateDir, vm, driver->caps) < 0)
goto endjob;
}
if (persistentDef) {
if (virDomainNumatuneSet(persistentDef->numa,
persistentDef->placement_mode ==
VIR_DOMAIN_CPU_PLACEMENT_MODE_STATIC,
-1, mode, nodeset) < 0)
goto endjob;
if (virDomainSaveConfig(cfg->configDir, driver->caps, persistentDef) < 0)
goto endjob;
}
ret = 0;
endjob:
qemuDomainObjEndJob(driver, vm);
cleanup:
virBitmapFree(nodeset);
virDomainObjEndAPI(&vm);
virObjectUnref(cfg);
return ret;
}
static int
qemuDomainGetNumaParameters(virDomainPtr dom,
virTypedParameterPtr params,
int *nparams,
unsigned int flags)
{
size_t i;
virDomainObjPtr vm = NULL;
virDomainNumatuneMemMode tmpmode = VIR_DOMAIN_NUMATUNE_MEM_STRICT;
qemuDomainObjPrivatePtr priv;
char *nodeset = NULL;
int ret = -1;
virDomainDefPtr def = NULL;
bool live = false;
virBitmapPtr autoNodeset = NULL;
virCheckFlags(VIR_DOMAIN_AFFECT_LIVE |
VIR_DOMAIN_AFFECT_CONFIG |
VIR_TYPED_PARAM_STRING_OKAY, -1);
if (!(vm = qemuDomObjFromDomain(dom)))
return -1;
priv = vm->privateData;
if (virDomainGetNumaParametersEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
if (!(def = virDomainObjGetOneDefState(vm, flags, &live)))
goto cleanup;
if (live)
autoNodeset = priv->autoNodeset;
if ((*nparams) == 0) {
*nparams = QEMU_NB_NUMA_PARAM;
ret = 0;
goto cleanup;
}
for (i = 0; i < QEMU_NB_NUMA_PARAM && i < *nparams; i++) {
virMemoryParameterPtr param = ¶ms[i];
switch (i) {
case 0: /* fill numa mode here */
ignore_value(virDomainNumatuneGetMode(def->numa, -1, &tmpmode));
if (virTypedParameterAssign(param, VIR_DOMAIN_NUMA_MODE,
VIR_TYPED_PARAM_INT, tmpmode) < 0)
goto cleanup;
break;
case 1: /* fill numa nodeset here */
nodeset = virDomainNumatuneFormatNodeset(def->numa, autoNodeset, -1);
if (!nodeset ||
virTypedParameterAssign(param, VIR_DOMAIN_NUMA_NODESET,
VIR_TYPED_PARAM_STRING, nodeset) < 0)
goto cleanup;
nodeset = NULL;
break;
/* coverity[dead_error_begin] */
default:
break;
/* should not hit here */
}
}
if (*nparams > QEMU_NB_NUMA_PARAM)
*nparams = QEMU_NB_NUMA_PARAM;
ret = 0;
cleanup:
VIR_FREE(nodeset);
virDomainObjEndAPI(&vm);
return ret;
}
static int
qemuSetGlobalBWLive(virCgroupPtr cgroup, unsigned long long period,
long long quota)
{
if (period == 0 && quota == 0)
return 0;
if (qemuSetupCgroupVcpuBW(cgroup, period, quota) < 0)
return -1;
return 0;
}
static int
qemuDomainSetPerfEvents(virDomainPtr dom,
virTypedParameterPtr params,
int nparams,
unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
size_t i;
virDomainObjPtr vm = NULL;
virQEMUDriverConfigPtr cfg = NULL;
qemuDomainObjPrivatePtr priv;
virDomainDefPtr def;
virDomainDefPtr persistentDef;
int ret = -1;
virPerfEventType type;
bool enabled;
virCheckFlags(VIR_DOMAIN_AFFECT_LIVE |
VIR_DOMAIN_AFFECT_CONFIG, -1);
if (virTypedParamsValidate(params, nparams,
VIR_PERF_PARAM_CMT, VIR_TYPED_PARAM_BOOLEAN,
VIR_PERF_PARAM_MBMT, VIR_TYPED_PARAM_BOOLEAN,
VIR_PERF_PARAM_MBML, VIR_TYPED_PARAM_BOOLEAN,
VIR_PERF_PARAM_CPU_CYCLES, VIR_TYPED_PARAM_BOOLEAN,
VIR_PERF_PARAM_INSTRUCTIONS, VIR_TYPED_PARAM_BOOLEAN,
VIR_PERF_PARAM_CACHE_REFERENCES, VIR_TYPED_PARAM_BOOLEAN,
VIR_PERF_PARAM_CACHE_MISSES, VIR_TYPED_PARAM_BOOLEAN,
VIR_PERF_PARAM_BRANCH_INSTRUCTIONS, VIR_TYPED_PARAM_BOOLEAN,
VIR_PERF_PARAM_BRANCH_MISSES, VIR_TYPED_PARAM_BOOLEAN,
VIR_PERF_PARAM_BUS_CYCLES, VIR_TYPED_PARAM_BOOLEAN,
VIR_PERF_PARAM_STALLED_CYCLES_FRONTEND, VIR_TYPED_PARAM_BOOLEAN,
VIR_PERF_PARAM_STALLED_CYCLES_BACKEND, VIR_TYPED_PARAM_BOOLEAN,
VIR_PERF_PARAM_REF_CPU_CYCLES, VIR_TYPED_PARAM_BOOLEAN,
VIR_PERF_PARAM_CPU_CLOCK, VIR_TYPED_PARAM_BOOLEAN,
VIR_PERF_PARAM_TASK_CLOCK, VIR_TYPED_PARAM_BOOLEAN,
VIR_PERF_PARAM_PAGE_FAULTS, VIR_TYPED_PARAM_BOOLEAN,
VIR_PERF_PARAM_CONTEXT_SWITCHES, VIR_TYPED_PARAM_BOOLEAN,
VIR_PERF_PARAM_CPU_MIGRATIONS, VIR_TYPED_PARAM_BOOLEAN,
VIR_PERF_PARAM_PAGE_FAULTS_MIN, VIR_TYPED_PARAM_BOOLEAN,
VIR_PERF_PARAM_PAGE_FAULTS_MAJ, VIR_TYPED_PARAM_BOOLEAN,
VIR_PERF_PARAM_ALIGNMENT_FAULTS, VIR_TYPED_PARAM_BOOLEAN,
VIR_PERF_PARAM_EMULATION_FAULTS, VIR_TYPED_PARAM_BOOLEAN,
NULL) < 0)
return -1;
if (!(vm = qemuDomObjFromDomain(dom)))
return -1;
cfg = virQEMUDriverGetConfig(driver);
priv = vm->privateData;
if (virDomainSetPerfEventsEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_MODIFY) < 0)
goto cleanup;
if (virDomainObjGetDefs(vm, flags, &def, &persistentDef) < 0)
goto endjob;
if (def) {
for (i = 0; i < nparams; i++) {
virTypedParameterPtr param = ¶ms[i];
enabled = param->value.b;
type = virPerfEventTypeFromString(param->field);
if (!enabled && virPerfEventDisable(priv->perf, type) < 0)
goto endjob;
if (enabled && virPerfEventEnable(priv->perf, type, vm->pid) < 0)
goto endjob;
def->perf.events[type] = enabled ?
VIR_TRISTATE_BOOL_YES : VIR_TRISTATE_BOOL_NO;
}
if (virDomainSaveStatus(driver->xmlopt, cfg->stateDir, vm, driver->caps) < 0)
goto endjob;
}
if (persistentDef) {
for (i = 0; i < nparams; i++) {
virTypedParameterPtr param = ¶ms[i];
enabled = param->value.b;
type = virPerfEventTypeFromString(param->field);
persistentDef->perf.events[type] = enabled ?
VIR_TRISTATE_BOOL_YES : VIR_TRISTATE_BOOL_NO;
}
if (virDomainSaveConfig(cfg->configDir, driver->caps, persistentDef) < 0)
goto endjob;
}
ret = 0;
endjob:
qemuDomainObjEndJob(driver, vm);
cleanup:
virDomainObjEndAPI(&vm);
virObjectUnref(cfg);
return ret;
}
static int
qemuDomainGetPerfEvents(virDomainPtr dom,
virTypedParameterPtr *params,
int *nparams,
unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
virDomainObjPtr vm = NULL;
qemuDomainObjPrivatePtr priv;
virDomainDefPtr def;
virTypedParameterPtr par = NULL;
int maxpar = 0;
int npar = 0;
size_t i;
int ret = -1;
virCheckFlags(VIR_DOMAIN_AFFECT_LIVE |
VIR_DOMAIN_AFFECT_CONFIG |
VIR_TYPED_PARAM_STRING_OKAY, -1);
if (!(vm = qemuDomObjFromDomain(dom)))
goto cleanup;
if (virDomainGetPerfEventsEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_QUERY) < 0)
goto cleanup;
if (virDomainObjUpdateModificationImpact(vm, &flags) < 0)
goto endjob;
if (!(def = virDomainObjGetOneDef(vm, flags)))
goto endjob;
priv = vm->privateData;
for (i = 0; i < VIR_PERF_EVENT_LAST; i++) {
bool perf_enabled;
if (flags & VIR_DOMAIN_AFFECT_CONFIG)
perf_enabled = def->perf.events[i] == VIR_TRISTATE_BOOL_YES;
else
perf_enabled = virPerfEventIsEnabled(priv->perf, i);
if (virTypedParamsAddBoolean(&par, &npar, &maxpar,
virPerfEventTypeToString(i),
perf_enabled) < 0)
goto endjob;
}
*params = par;
*nparams = npar;
par = NULL;
npar = 0;
ret = 0;
endjob:
qemuDomainObjEndJob(driver, vm);
cleanup:
virDomainObjEndAPI(&vm);
virTypedParamsFree(par, npar);
return ret;
}
static int
qemuSetVcpusBWLive(virDomainObjPtr vm, virCgroupPtr cgroup,
unsigned long long period, long long quota)
{
size_t i;
virCgroupPtr cgroup_vcpu = NULL;
if (period == 0 && quota == 0)
return 0;
if (!qemuDomainHasVcpuPids(vm))
return 0;
for (i = 0; i < virDomainDefGetVcpusMax(vm->def); i++) {
virDomainVcpuDefPtr vcpu = virDomainDefGetVcpu(vm->def, i);
if (!vcpu->online)
continue;
if (virCgroupNewThread(cgroup, VIR_CGROUP_THREAD_VCPU, i,
false, &cgroup_vcpu) < 0)
goto cleanup;
if (qemuSetupCgroupVcpuBW(cgroup_vcpu, period, quota) < 0)
goto cleanup;
virCgroupFree(&cgroup_vcpu);
}
return 0;
cleanup:
virCgroupFree(&cgroup_vcpu);
return -1;
}
static int
qemuSetEmulatorBandwidthLive(virCgroupPtr cgroup,
unsigned long long period,
long long quota)
{
virCgroupPtr cgroup_emulator = NULL;
if (period == 0 && quota == 0)
return 0;
if (virCgroupNewThread(cgroup, VIR_CGROUP_THREAD_EMULATOR, 0,
false, &cgroup_emulator) < 0)
goto cleanup;
if (qemuSetupCgroupVcpuBW(cgroup_emulator, period, quota) < 0)
goto cleanup;
virCgroupFree(&cgroup_emulator);
return 0;
cleanup:
virCgroupFree(&cgroup_emulator);
return -1;
}
static int
qemuSetIOThreadsBWLive(virDomainObjPtr vm, virCgroupPtr cgroup,
unsigned long long period, long long quota)
{
size_t i;
virCgroupPtr cgroup_iothread = NULL;
if (period == 0 && quota == 0)
return 0;
if (!vm->def->niothreadids)
return 0;
for (i = 0; i < vm->def->niothreadids; i++) {
if (virCgroupNewThread(cgroup, VIR_CGROUP_THREAD_IOTHREAD,
vm->def->iothreadids[i]->iothread_id,
false, &cgroup_iothread) < 0)
goto cleanup;
if (qemuSetupCgroupVcpuBW(cgroup_iothread, period, quota) < 0)
goto cleanup;
virCgroupFree(&cgroup_iothread);
}
return 0;
cleanup:
virCgroupFree(&cgroup_iothread);
return -1;
}
#define SCHED_RANGE_CHECK(VAR, NAME, MIN, MAX) \
if (((VAR) > 0 && (VAR) < (MIN)) || (VAR) > (MAX)) { \
virReportError(VIR_ERR_INVALID_ARG, \
_("value of '%s' is out of range [%lld, %lld]"), \
NAME, MIN, MAX); \
rc = -1; \
goto endjob; \
}
static int
qemuDomainSetSchedulerParametersFlags(virDomainPtr dom,
virTypedParameterPtr params,
int nparams,
unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
size_t i;
virDomainObjPtr vm = NULL;
virDomainDefPtr def = NULL;
virDomainDefPtr persistentDef = NULL;
virDomainDefPtr persistentDefCopy = NULL;
unsigned long long value_ul;
long long value_l;
int ret = -1;
int rc;
virQEMUDriverConfigPtr cfg = NULL;
virCapsPtr caps = NULL;
qemuDomainObjPrivatePtr priv;
virObjectEventPtr event = NULL;
virTypedParameterPtr eventParams = NULL;
int eventNparams = 0;
int eventMaxNparams = 0;
virCheckFlags(VIR_DOMAIN_AFFECT_LIVE |
VIR_DOMAIN_AFFECT_CONFIG, -1);
if (virTypedParamsValidate(params, nparams,
VIR_DOMAIN_SCHEDULER_CPU_SHARES,
VIR_TYPED_PARAM_ULLONG,
VIR_DOMAIN_SCHEDULER_VCPU_PERIOD,
VIR_TYPED_PARAM_ULLONG,
VIR_DOMAIN_SCHEDULER_VCPU_QUOTA,
VIR_TYPED_PARAM_LLONG,
VIR_DOMAIN_SCHEDULER_GLOBAL_PERIOD,
VIR_TYPED_PARAM_ULLONG,
VIR_DOMAIN_SCHEDULER_GLOBAL_QUOTA,
VIR_TYPED_PARAM_LLONG,
VIR_DOMAIN_SCHEDULER_EMULATOR_PERIOD,
VIR_TYPED_PARAM_ULLONG,
VIR_DOMAIN_SCHEDULER_EMULATOR_QUOTA,
VIR_TYPED_PARAM_LLONG,
VIR_DOMAIN_SCHEDULER_IOTHREAD_PERIOD,
VIR_TYPED_PARAM_ULLONG,
VIR_DOMAIN_SCHEDULER_IOTHREAD_QUOTA,
VIR_TYPED_PARAM_LLONG,
NULL) < 0)
return -1;
if (!(vm = qemuDomObjFromDomain(dom)))
return -1;
priv = vm->privateData;
cfg = virQEMUDriverGetConfig(driver);
if (virDomainSetSchedulerParametersFlagsEnsureACL(dom->conn, vm->def, flags) < 0)
goto cleanup;
if (!virQEMUDriverIsPrivileged(driver)) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("CPU tuning is not available in session mode"));
goto cleanup;
}
if (!(caps = virQEMUDriverGetCapabilities(driver, false)))
goto cleanup;
if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_MODIFY) < 0)
goto cleanup;
if (virDomainObjGetDefs(vm, flags, &def, &persistentDef) < 0)
goto endjob;
if (persistentDef) {
/* Make a copy for updated domain. */
if (!(persistentDefCopy = virDomainObjCopyPersistentDef(vm, caps,
driver->xmlopt)))
goto endjob;
}
if (def &&
!virCgroupHasController(priv->cgroup, VIR_CGROUP_CONTROLLER_CPU)) {
virReportError(VIR_ERR_OPERATION_INVALID, "%s",
_("cgroup CPU controller is not mounted"));
goto endjob;
}
for (i = 0; i < nparams; i++) {
virTypedParameterPtr param = ¶ms[i];
value_ul = param->value.ul;
value_l = param->value.l;
if (STREQ(param->field, VIR_DOMAIN_SCHEDULER_CPU_SHARES)) {
if (def) {
unsigned long long val;
if (virCgroupSetCpuShares(priv->cgroup, value_ul) < 0)
goto endjob;
if (virCgroupGetCpuShares(priv->cgroup, &val) < 0)
goto endjob;
def->cputune.shares = val;
def->cputune.sharesSpecified = true;
if (virTypedParamsAddULLong(&eventParams, &eventNparams,
&eventMaxNparams,
VIR_DOMAIN_TUNABLE_CPU_CPU_SHARES,
val) < 0)
goto endjob;
}
if (persistentDef) {
persistentDefCopy->cputune.shares = value_ul;
persistentDefCopy->cputune.sharesSpecified = true;
}
} else if (STREQ(param->field, VIR_DOMAIN_SCHEDULER_VCPU_PERIOD)) {
SCHED_RANGE_CHECK(value_ul, VIR_DOMAIN_SCHEDULER_VCPU_PERIOD,
QEMU_SCHED_MIN_PERIOD, QEMU_SCHED_MAX_PERIOD);
if (def && value_ul) {
if ((rc = qemuSetVcpusBWLive(vm, priv->cgroup, value_ul, 0)))
goto endjob;
def->cputune.period = value_ul;
if (virTypedParamsAddULLong(&eventParams, &eventNparams,
&eventMaxNparams,
VIR_DOMAIN_TUNABLE_CPU_VCPU_PERIOD,
value_ul) < 0)
goto endjob;
}
if (persistentDef)
persistentDefCopy->cputune.period = value_ul;
} else if (STREQ(param->field, VIR_DOMAIN_SCHEDULER_VCPU_QUOTA)) {
SCHED_RANGE_CHECK(value_l, VIR_DOMAIN_SCHEDULER_VCPU_QUOTA,
QEMU_SCHED_MIN_QUOTA, QEMU_SCHED_MAX_QUOTA);
if (def && value_l) {
if ((rc = qemuSetVcpusBWLive(vm, priv->cgroup, 0, value_l)))
goto endjob;
def->cputune.quota = value_l;
if (virTypedParamsAddLLong(&eventParams, &eventNparams,
&eventMaxNparams,
VIR_DOMAIN_TUNABLE_CPU_VCPU_QUOTA,
value_l) < 0)
goto endjob;
}
if (persistentDef)
persistentDefCopy->cputune.quota = value_l;
} else if (STREQ(param->field, VIR_DOMAIN_SCHEDULER_GLOBAL_PERIOD)) {
SCHED_RANGE_CHECK(value_ul, VIR_DOMAIN_SCHEDULER_GLOBAL_PERIOD,
QEMU_SCHED_MIN_PERIOD, QEMU_SCHED_MAX_PERIOD);
if (def && value_ul) {
if ((rc = qemuSetGlobalBWLive(priv->cgroup, value_ul, 0)))
goto endjob;
def->cputune.global_period = value_ul;
if (virTypedParamsAddULLong(&eventParams, &eventNparams,
&eventMaxNparams,
VIR_DOMAIN_TUNABLE_CPU_GLOBAL_PERIOD,
value_ul) < 0)
goto endjob;
}
if (persistentDef)
persistentDefCopy->cputune.global_period = value_ul;
} else if (STREQ(param->field, VIR_DOMAIN_SCHEDULER_GLOBAL_QUOTA)) {
SCHED_RANGE_CHECK(value_l, VIR_DOMAIN_SCHEDULER_GLOBAL_QUOTA,
QEMU_SCHED_MIN_QUOTA, QEMU_SCHED_MAX_QUOTA);
if (def && value_l) {
if ((rc = qemuSetGlobalBWLive(priv->cgroup, 0, value_l)))
goto endjob;
def->cputune.global_quota = value_l;
if (virTypedParamsAddLLong(&eventParams, &eventNparams,
&eventMaxNparams,
VIR_DOMAIN_TUNABLE_CPU_GLOBAL_QUOTA,
value_l) < 0)
goto endjob;
}
if (persistentDef)
persistentDefCopy->cputune.global_quota = value_l;
} else if (STREQ(param->field, VIR_DOMAIN_SCHEDULER_EMULATOR_PERIOD)) {
SCHED_RANGE_CHECK(value_ul, VIR_DOMAIN_SCHEDULER_EMULATOR_PERIOD,
QEMU_SCHED_MIN_PERIOD, QEMU_SCHED_MAX_PERIOD);
if (def && value_ul) {
if ((rc = qemuSetEmulatorBandwidthLive(priv->cgroup,
value_ul, 0)))
goto endjob;
def->cputune.emulator_period = value_ul;
if (virTypedParamsAddULLong(&eventParams, &eventNparams,
&eventMaxNparams,
VIR_DOMAIN_TUNABLE_CPU_EMULATOR_PERIOD,
value_ul) < 0)
goto endjob;
}
if (persistentDef)
persistentDefCopy->cputune.emulator_period = value_ul;
} else if (STREQ(param->field, VIR_DOMAIN_SCHEDULER_EMULATOR_QUOTA)) {
SCHED_RANGE_CHECK(value_l, VIR_DOMAIN_SCHEDULER_EMULATOR_QUOTA,
QEMU_SCHED_MIN_QUOTA, QEMU_SCHED_MAX_QUOTA);
if (def && value_l) {
if ((rc = qemuSetEmulatorBandwidthLive(priv->cgroup,
0, value_l)))
goto endjob;
def->cputune.emulator_quota = value_l;
if (virTypedParamsAddLLong(&eventParams, &eventNparams,
&eventMaxNparams,
VIR_DOMAIN_TUNABLE_CPU_EMULATOR_QUOTA,
value_l) < 0)
goto endjob;
}
if (persistentDef)
persistentDefCopy->cputune.emulator_quota = value_l;
} else if (STREQ(param->field, VIR_DOMAIN_SCHEDULER_IOTHREAD_PERIOD)) {
SCHED_RANGE_CHECK(value_ul, VIR_DOMAIN_SCHEDULER_IOTHREAD_PERIOD,
QEMU_SCHED_MIN_PERIOD, QEMU_SCHED_MAX_PERIOD);
if (def && value_ul) {
if ((rc = qemuSetIOThreadsBWLive(vm, priv->cgroup, value_ul, 0)))
goto endjob;
def->cputune.iothread_period = value_ul;
if (virTypedParamsAddULLong(&eventParams, &eventNparams,
&eventMaxNparams,
VIR_DOMAIN_TUNABLE_CPU_IOTHREAD_PERIOD,
value_ul) < 0)
goto endjob;
}
if (persistentDef)
persistentDefCopy->cputune.iothread_period = value_ul;
} else if (STREQ(param->field, VIR_DOMAIN_SCHEDULER_IOTHREAD_QUOTA)) {
SCHED_RANGE_CHECK(value_l, VIR_DOMAIN_SCHEDULER_IOTHREAD_QUOTA,
QEMU_SCHED_MIN_QUOTA, QEMU_SCHED_MAX_QUOTA);
if (def && value_l) {
if ((rc = qemuSetIOThreadsBWLive(vm, priv->cgroup, 0, value_l)))
goto endjob;
def->cputune.iothread_quota = value_l;
if (virTypedParamsAddLLong(&eventParams, &eventNparams,
&eventMaxNparams,
VIR_DOMAIN_TUNABLE_CPU_IOTHREAD_QUOTA,
value_l) < 0)
goto endjob;
}
if (persistentDef)
persistentDefCopy->cputune.iothread_quota = value_l;
}
}
if (virDomainSaveStatus(driver->xmlopt, cfg->stateDir, vm, driver->caps) < 0)
goto endjob;
if (eventNparams) {
event = virDomainEventTunableNewFromDom(dom, eventParams, eventNparams);
eventNparams = 0;
virObjectEventStateQueue(driver->domainEventState, event);
}
if (persistentDef) {
rc = virDomainSaveConfig(cfg->configDir, driver->caps, persistentDefCopy);
if (rc < 0)
goto endjob;
virDomainObjAssignDef(vm, persistentDefCopy, false, NULL);
persistentDefCopy = NULL;
}
ret = 0;
endjob:
qemuDomainObjEndJob(driver, vm);
cleanup:
virDomainDefFree(persistentDefCopy);
virDomainObjEndAPI(&vm);
if (eventNparams)
virTypedParamsFree(eventParams, eventNparams);
virObjectUnref(caps);
virObjectUnref(cfg);
return ret;
}
#undef SCHED_RANGE_CHECK
static int
qemuDomainSetSchedulerParameters(virDomainPtr dom,
virTypedParameterPtr params,
int nparams)
{
return qemuDomainSetSchedulerParametersFlags(dom,
params,
nparams,
VIR_DOMAIN_AFFECT_CURRENT);
}
static int
qemuGetVcpuBWLive(virCgroupPtr cgroup, unsigned long long *period,
long long *quota)
{
if (virCgroupGetCpuCfsPeriod(cgroup, period) < 0)
return -1;
if (virCgroupGetCpuCfsQuota(cgroup, quota) < 0)
return -1;
return 0;
}
static int
qemuGetVcpusBWLive(virDomainObjPtr vm,
unsigned long long *period, long long *quota)
{
virCgroupPtr cgroup_vcpu = NULL;
qemuDomainObjPrivatePtr priv = NULL;
int rc;
int ret = -1;
priv = vm->privateData;
if (!qemuDomainHasVcpuPids(vm)) {
/* We do not create sub dir for each vcpu */
rc = qemuGetVcpuBWLive(priv->cgroup, period, quota);
if (rc < 0)
goto cleanup;
if (*quota > 0)
*quota /= virDomainDefGetVcpus(vm->def);
goto out;
}
/* get period and quota for vcpu0 */
if (virCgroupNewThread(priv->cgroup, VIR_CGROUP_THREAD_VCPU, 0,
false, &cgroup_vcpu) < 0)
goto cleanup;
rc = qemuGetVcpuBWLive(cgroup_vcpu, period, quota);
if (rc < 0)
goto cleanup;
out:
ret = 0;
cleanup:
virCgroupFree(&cgroup_vcpu);
return ret;
}
static int
qemuGetEmulatorBandwidthLive(virCgroupPtr cgroup,
unsigned long long *period,
long long *quota)
{
virCgroupPtr cgroup_emulator = NULL;
int ret = -1;
/* get period and quota for emulator */
if (virCgroupNewThread(cgroup, VIR_CGROUP_THREAD_EMULATOR, 0,
false, &cgroup_emulator) < 0)
goto cleanup;
if (qemuGetVcpuBWLive(cgroup_emulator, period, quota) < 0)
goto cleanup;
ret = 0;
cleanup:
virCgroupFree(&cgroup_emulator);
return ret;
}
static int
qemuGetIOThreadsBWLive(virDomainObjPtr vm,
unsigned long long *period, long long *quota)
{
virCgroupPtr cgroup_iothread = NULL;
qemuDomainObjPrivatePtr priv = NULL;
int rc;
int ret = -1;
priv = vm->privateData;
if (!vm->def->niothreadids) {
/* We do not create sub dir for each iothread */
if ((rc = qemuGetVcpuBWLive(priv->cgroup, period, quota)) < 0)
goto cleanup;
goto out;
}
/* get period and quota for the "first" IOThread */
if (virCgroupNewThread(priv->cgroup, VIR_CGROUP_THREAD_IOTHREAD,
vm->def->iothreadids[0]->iothread_id,
false, &cgroup_iothread) < 0)
goto cleanup;
rc = qemuGetVcpuBWLive(cgroup_iothread, period, quota);
if (rc < 0)
goto cleanup;
out:
ret = 0;
cleanup:
virCgroupFree(&cgroup_iothread);
return ret;
}
static int
qemuGetGlobalBWLive(virCgroupPtr cgroup, unsigned long long *period,
long long *quota)
{
if (qemuGetVcpuBWLive(cgroup, period, quota) < 0)
return -1;
return 0;
}
static int
qemuDomainGetSchedulerParametersFlags(virDomainPtr dom,
virTypedParameterPtr params,
int *nparams,
unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
virDomainObjPtr vm = NULL;
virDomainCputune data = {0};
int ret = -1;
bool cpu_bw_status = true;
virDomainDefPtr persistentDef;
virDomainDefPtr def;
qemuDomainObjPrivatePtr priv;
int maxparams = *nparams;
*nparams = 0;
virCheckFlags(VIR_DOMAIN_AFFECT_LIVE |
VIR_DOMAIN_AFFECT_CONFIG |
VIR_TYPED_PARAM_STRING_OKAY, -1);
if (!(vm = qemuDomObjFromDomain(dom)))
goto cleanup;
priv = vm->privateData;
if (virDomainGetSchedulerParametersFlagsEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
if (!virQEMUDriverIsPrivileged(driver)) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("CPU tuning is not available in session mode"));
goto cleanup;
}
if (virDomainObjGetDefs(vm, flags, &def, &persistentDef) < 0)
goto cleanup;
if (persistentDef) {
data = persistentDef->cputune;
} else if (def) {
if (!virCgroupHasController(priv->cgroup, VIR_CGROUP_CONTROLLER_CPU)) {
virReportError(VIR_ERR_OPERATION_INVALID,
"%s", _("cgroup CPU controller is not mounted"));
goto cleanup;
}
if (virCgroupGetCpuShares(priv->cgroup, &data.shares) < 0)
goto cleanup;
if (virCgroupSupportsCpuBW(priv->cgroup)) {
if (maxparams > 1 &&
qemuGetVcpusBWLive(vm, &data.period, &data.quota) < 0)
goto cleanup;
if (maxparams > 3 &&
qemuGetEmulatorBandwidthLive(priv->cgroup, &data.emulator_period,
&data.emulator_quota) < 0)
goto cleanup;
if (maxparams > 5 &&
qemuGetGlobalBWLive(priv->cgroup, &data.global_period,
&data.global_quota) < 0)
goto cleanup;
if (maxparams > 7 &&
qemuGetIOThreadsBWLive(vm, &data.iothread_period,
&data.iothread_quota) < 0)
goto cleanup;
} else {
cpu_bw_status = false;
}
}
#define QEMU_SCHED_ASSIGN(param, name, type) \
if (*nparams < maxparams && \
virTypedParameterAssign(&(params[(*nparams)++]), \
VIR_DOMAIN_SCHEDULER_ ## name, \
VIR_TYPED_PARAM_ ## type, \
data.param) < 0) \
goto cleanup
QEMU_SCHED_ASSIGN(shares, CPU_SHARES, ULLONG);
if (cpu_bw_status) {
QEMU_SCHED_ASSIGN(period, VCPU_PERIOD, ULLONG);
QEMU_SCHED_ASSIGN(quota, VCPU_QUOTA, LLONG);
QEMU_SCHED_ASSIGN(emulator_period, EMULATOR_PERIOD, ULLONG);
QEMU_SCHED_ASSIGN(emulator_quota, EMULATOR_QUOTA, LLONG);
QEMU_SCHED_ASSIGN(global_period, GLOBAL_PERIOD, ULLONG);
QEMU_SCHED_ASSIGN(global_quota, GLOBAL_QUOTA, LLONG);
QEMU_SCHED_ASSIGN(iothread_period, IOTHREAD_PERIOD, ULLONG);
QEMU_SCHED_ASSIGN(iothread_quota, IOTHREAD_QUOTA, LLONG);
}
#undef QEMU_SCHED_ASSIGN
ret = 0;
cleanup:
virDomainObjEndAPI(&vm);
return ret;
}
static int
qemuDomainGetSchedulerParameters(virDomainPtr dom,
virTypedParameterPtr params,
int *nparams)
{
return qemuDomainGetSchedulerParametersFlags(dom, params, nparams,
VIR_DOMAIN_AFFECT_CURRENT);
}
/**
* Resize a block device while a guest is running. Resize to a lower size
* is supported, but should be used with extreme caution. Note that it
* only supports to resize image files, it can't resize block devices
* like LVM volumes.
*/
static int
qemuDomainBlockResize(virDomainPtr dom,
const char *path,
unsigned long long size,
unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
virDomainObjPtr vm;
qemuDomainObjPrivatePtr priv;
int ret = -1;
char *device = NULL;
const char *nodename = NULL;
virDomainDiskDefPtr disk = NULL;
virCheckFlags(VIR_DOMAIN_BLOCK_RESIZE_BYTES, -1);
/* We prefer operating on bytes. */
if ((flags & VIR_DOMAIN_BLOCK_RESIZE_BYTES) == 0) {
if (size > ULLONG_MAX / 1024) {
virReportError(VIR_ERR_OVERFLOW,
_("size must be less than %llu"),
ULLONG_MAX / 1024);
return -1;
}
size *= 1024;
}
if (!(vm = qemuDomObjFromDomain(dom)))
goto cleanup;
priv = vm->privateData;
if (virDomainBlockResizeEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_MODIFY) < 0)
goto cleanup;
if (virDomainObjCheckActive(vm) < 0)
goto endjob;
if (!(disk = virDomainDiskByName(vm->def, path, false))) {
virReportError(VIR_ERR_INVALID_ARG,
_("disk '%s' was not found in the domain config"), path);
goto endjob;
}
/* qcow2 and qed must be sized on 512 byte blocks/sectors,
* so adjust size if necessary to round up.
*/
if (disk->src->format == VIR_STORAGE_FILE_QCOW2 ||
disk->src->format == VIR_STORAGE_FILE_QED)
size = VIR_ROUND_UP(size, 512);
if (virQEMUCapsGet(priv->qemuCaps, QEMU_CAPS_BLOCKDEV)) {
if (virStorageSourceIsEmpty(disk->src) || disk->src->readonly) {
virReportError(VIR_ERR_OPERATION_UNSUPPORTED,
_("can't resize empty or readonly disk '%s'"),
disk->dst);
goto endjob;
}
nodename = disk->src->nodeformat;
} else {
if (!(device = qemuAliasDiskDriveFromDisk(disk)))
goto endjob;
}
qemuDomainObjEnterMonitor(driver, vm);
if (qemuMonitorBlockResize(priv->mon, device, nodename, size) < 0) {
ignore_value(qemuDomainObjExitMonitor(driver, vm));
goto endjob;
}
if (qemuDomainObjExitMonitor(driver, vm) < 0)
goto endjob;
ret = 0;
endjob:
qemuDomainObjEndJob(driver, vm);
cleanup:
VIR_FREE(device);
virDomainObjEndAPI(&vm);
return ret;
}
static int
qemuDomainBlockStatsGatherTotals(qemuBlockStatsPtr data,
qemuBlockStatsPtr total)
{
#define QEMU_BLOCK_STAT_TOTAL(NAME) \
if (data->NAME > 0) \
total->NAME += data->NAME
QEMU_BLOCK_STAT_TOTAL(wr_bytes);
QEMU_BLOCK_STAT_TOTAL(wr_req);
QEMU_BLOCK_STAT_TOTAL(rd_bytes);
QEMU_BLOCK_STAT_TOTAL(rd_req);
QEMU_BLOCK_STAT_TOTAL(flush_req);
QEMU_BLOCK_STAT_TOTAL(wr_total_times);
QEMU_BLOCK_STAT_TOTAL(rd_total_times);
QEMU_BLOCK_STAT_TOTAL(flush_total_times);
#undef QEMU_BLOCK_STAT_TOTAL
return 0;
}
/**
* qemuDomainBlocksStatsGather:
* @driver: driver object
* @vm: domain object
* @path: to gather the statistics for
* @capacity: refresh capacity of the backing image
* @retstats: returns pointer to structure holding the stats
*
* Gathers the block statistics for use in qemuDomainBlockStats* APIs.
*
* Returns -1 on error; number of filled block statistics on success.
*/
static int
qemuDomainBlocksStatsGather(virQEMUDriverPtr driver,
virDomainObjPtr vm,
const char *path,
bool capacity,
qemuBlockStatsPtr *retstats)
{
qemuDomainObjPrivatePtr priv = vm->privateData;
bool blockdev = virQEMUCapsGet(priv->qemuCaps, QEMU_CAPS_BLOCKDEV);
virDomainDiskDefPtr disk = NULL;
virHashTablePtr blockstats = NULL;
qemuBlockStatsPtr stats;
size_t i;
int nstats;
int rc = 0;
const char *entryname = NULL;
int ret = -1;
if (*path) {
if (!(disk = virDomainDiskByName(vm->def, path, false))) {
virReportError(VIR_ERR_INVALID_ARG, _("invalid path: %s"), path);
goto cleanup;
}
if (blockdev) {
entryname = QEMU_DOMAIN_DISK_PRIVATE(disk)->qomName;
} else {
if (!disk->info.alias) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("missing disk device alias name for %s"), disk->dst);
goto cleanup;
}
entryname = disk->info.alias;
}
}
qemuDomainObjEnterMonitor(driver, vm);
nstats = qemuMonitorGetAllBlockStatsInfo(priv->mon, &blockstats, false);
if (capacity && nstats >= 0) {
if (blockdev)
rc = qemuMonitorBlockStatsUpdateCapacityBlockdev(priv->mon, blockstats);
else
rc = qemuMonitorBlockStatsUpdateCapacity(priv->mon, blockstats, false);
}
if (qemuDomainObjExitMonitor(driver, vm) < 0 || nstats < 0 || rc < 0)
goto cleanup;
if (VIR_ALLOC(*retstats) < 0)
goto cleanup;
if (entryname) {
if (!(stats = virHashLookup(blockstats, entryname))) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("cannot find statistics for device '%s'"), entryname);
goto cleanup;
}
**retstats = *stats;
if (blockdev) {
/* capacity are reported only per node-name so we need to transfer them */
qemuBlockStatsPtr capstats;
if (disk && disk->src &&
(capstats = virHashLookup(blockstats, disk->src->nodeformat))) {
(*retstats)->capacity = capstats->capacity;
(*retstats)->physical = capstats->physical;
(*retstats)->wr_highest_offset = capstats->wr_highest_offset;
(*retstats)->wr_highest_offset_valid = capstats->wr_highest_offset_valid;
(*retstats)->write_threshold = capstats->write_threshold;
}
}
} else {
for (i = 0; i < vm->def->ndisks; i++) {
disk = vm->def->disks[i];
entryname = disk->info.alias;
if (blockdev)
entryname = QEMU_DOMAIN_DISK_PRIVATE(disk)->qomName;
if (!entryname)
continue;
if (!(stats = virHashLookup(blockstats, entryname))) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("cannot find statistics for device '%s'"), entryname);
goto cleanup;
}
qemuDomainBlockStatsGatherTotals(stats, *retstats);
}
}
ret = nstats;
cleanup:
virHashFree(blockstats);
return ret;
}
/* This uses the 'info blockstats' monitor command which was
* integrated into both qemu & kvm in late 2007. If the command is
* not supported we detect this and return the appropriate error.
*/
static int
qemuDomainBlockStats(virDomainPtr dom,
const char *path,
virDomainBlockStatsPtr stats)
{
virQEMUDriverPtr driver = dom->conn->privateData;
qemuBlockStatsPtr blockstats = NULL;
int ret = -1;
virDomainObjPtr vm;
if (!(vm = qemuDomObjFromDomain(dom)))
goto cleanup;
if (virDomainBlockStatsEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_QUERY) < 0)
goto cleanup;
if (virDomainObjCheckActive(vm) < 0)
goto endjob;
if (qemuDomainBlocksStatsGather(driver, vm, path, false, &blockstats) < 0)
goto endjob;
stats->rd_req = blockstats->rd_req;
stats->rd_bytes = blockstats->rd_bytes;
stats->wr_req = blockstats->wr_req;
stats->wr_bytes = blockstats->wr_bytes;
/* qemu doesn't report the error count */
stats->errs = -1;
ret = 0;
endjob:
qemuDomainObjEndJob(driver, vm);
cleanup:
virDomainObjEndAPI(&vm);
VIR_FREE(blockstats);
return ret;
}
static int
qemuDomainBlockStatsFlags(virDomainPtr dom,
const char *path,
virTypedParameterPtr params,
int *nparams,
unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
virDomainObjPtr vm;
qemuBlockStatsPtr blockstats = NULL;
int nstats;
int ret = -1;
VIR_DEBUG("params=%p, flags=0x%x", params, flags);
virCheckFlags(VIR_TYPED_PARAM_STRING_OKAY, -1);
/* We don't return strings, and thus trivially support this flag. */
flags &= ~VIR_TYPED_PARAM_STRING_OKAY;
if (!(vm = qemuDomObjFromDomain(dom)))
goto cleanup;
if (virDomainBlockStatsFlagsEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_QUERY) < 0)
goto cleanup;
if (virDomainObjCheckActive(vm) < 0)
goto endjob;
if ((nstats = qemuDomainBlocksStatsGather(driver, vm, path, false,
&blockstats)) < 0)
goto endjob;
/* return count of supported stats */
if (*nparams == 0) {
*nparams = nstats;
ret = 0;
goto endjob;
}
nstats = 0;
#define QEMU_BLOCK_STATS_ASSIGN_PARAM(VAR, NAME) \
if (nstats < *nparams && (blockstats->VAR) != -1) { \
if (virTypedParameterAssign(params + nstats, NAME, \
VIR_TYPED_PARAM_LLONG, (blockstats->VAR)) < 0) \
goto endjob; \
nstats++; \
}
QEMU_BLOCK_STATS_ASSIGN_PARAM(wr_bytes, VIR_DOMAIN_BLOCK_STATS_WRITE_BYTES);
QEMU_BLOCK_STATS_ASSIGN_PARAM(wr_req, VIR_DOMAIN_BLOCK_STATS_WRITE_REQ);
QEMU_BLOCK_STATS_ASSIGN_PARAM(rd_bytes, VIR_DOMAIN_BLOCK_STATS_READ_BYTES);
QEMU_BLOCK_STATS_ASSIGN_PARAM(rd_req, VIR_DOMAIN_BLOCK_STATS_READ_REQ);
QEMU_BLOCK_STATS_ASSIGN_PARAM(flush_req, VIR_DOMAIN_BLOCK_STATS_FLUSH_REQ);
QEMU_BLOCK_STATS_ASSIGN_PARAM(wr_total_times,
VIR_DOMAIN_BLOCK_STATS_WRITE_TOTAL_TIMES);
QEMU_BLOCK_STATS_ASSIGN_PARAM(rd_total_times,
VIR_DOMAIN_BLOCK_STATS_READ_TOTAL_TIMES);
QEMU_BLOCK_STATS_ASSIGN_PARAM(flush_total_times,
VIR_DOMAIN_BLOCK_STATS_FLUSH_TOTAL_TIMES);
#undef QEMU_BLOCK_STATS_ASSIGN_PARAM
ret = 0;
*nparams = nstats;
endjob:
qemuDomainObjEndJob(driver, vm);
cleanup:
VIR_FREE(blockstats);
virDomainObjEndAPI(&vm);
return ret;
}
static int
qemuDomainInterfaceStats(virDomainPtr dom,
const char *device,
virDomainInterfaceStatsPtr stats)
{
virDomainObjPtr vm;
virDomainNetDefPtr net = NULL;
int ret = -1;
if (!(vm = qemuDomObjFromDomain(dom)))
goto cleanup;
if (virDomainInterfaceStatsEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
if (virDomainObjCheckActive(vm) < 0)
goto cleanup;
if (!(net = virDomainNetFind(vm->def, device)))
goto cleanup;
if (virDomainNetGetActualType(net) == VIR_DOMAIN_NET_TYPE_VHOSTUSER) {
if (virNetDevOpenvswitchInterfaceStats(net->ifname, stats) < 0)
goto cleanup;
} else {
if (virNetDevTapInterfaceStats(net->ifname, stats,
!virDomainNetTypeSharesHostView(net)) < 0)
goto cleanup;
}
ret = 0;
cleanup:
virDomainObjEndAPI(&vm);
return ret;
}
static int
qemuDomainSetInterfaceParameters(virDomainPtr dom,
const char *device,
virTypedParameterPtr params,
int nparams,
unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
size_t i;
virDomainObjPtr vm = NULL;
virDomainDefPtr def;
virDomainDefPtr persistentDef;
int ret = -1;
virDomainNetDefPtr net = NULL, persistentNet = NULL;
virNetDevBandwidthPtr bandwidth = NULL, newBandwidth = NULL;
virQEMUDriverConfigPtr cfg = NULL;
bool inboundSpecified = false, outboundSpecified = false;
int actualType;
bool qosSupported = true;
virCheckFlags(VIR_DOMAIN_AFFECT_LIVE |
VIR_DOMAIN_AFFECT_CONFIG, -1);
if (virTypedParamsValidate(params, nparams,
VIR_DOMAIN_BANDWIDTH_IN_AVERAGE,
VIR_TYPED_PARAM_UINT,
VIR_DOMAIN_BANDWIDTH_IN_PEAK,
VIR_TYPED_PARAM_UINT,
VIR_DOMAIN_BANDWIDTH_IN_BURST,
VIR_TYPED_PARAM_UINT,
VIR_DOMAIN_BANDWIDTH_IN_FLOOR,
VIR_TYPED_PARAM_UINT,
VIR_DOMAIN_BANDWIDTH_OUT_AVERAGE,
VIR_TYPED_PARAM_UINT,
VIR_DOMAIN_BANDWIDTH_OUT_PEAK,
VIR_TYPED_PARAM_UINT,
VIR_DOMAIN_BANDWIDTH_OUT_BURST,
VIR_TYPED_PARAM_UINT,
NULL) < 0)
return -1;
if (!(vm = qemuDomObjFromDomain(dom)))
return -1;
cfg = virQEMUDriverGetConfig(driver);
if (virDomainSetInterfaceParametersEnsureACL(dom->conn, vm->def, flags) < 0)
goto cleanup;
if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_MODIFY) < 0)
goto cleanup;
if (virDomainObjGetDefs(vm, flags, &def, &persistentDef) < 0)
goto endjob;
if (def &&
!(net = virDomainNetFind(vm->def, device)))
goto endjob;
if (persistentDef &&
!(persistentNet = virDomainNetFind(persistentDef, device)))
goto endjob;
if (net) {
actualType = virDomainNetGetActualType(net);
qosSupported = virNetDevSupportBandwidth(actualType);
}
if (qosSupported && persistentNet) {
actualType = virDomainNetGetActualType(persistentNet);
qosSupported = virNetDevSupportBandwidth(actualType);
}
if (!qosSupported) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("setting bandwidth on interfaces of "
"type '%s' is not implemented yet"),
virDomainNetTypeToString(actualType));
goto endjob;
}
if ((VIR_ALLOC(bandwidth) < 0) ||
(VIR_ALLOC(bandwidth->in) < 0) ||
(VIR_ALLOC(bandwidth->out) < 0))
goto endjob;
for (i = 0; i < nparams; i++) {
virTypedParameterPtr param = ¶ms[i];
if (STREQ(param->field, VIR_DOMAIN_BANDWIDTH_IN_AVERAGE)) {
bandwidth->in->average = param->value.ui;
inboundSpecified = true;
} else if (STREQ(param->field, VIR_DOMAIN_BANDWIDTH_IN_PEAK)) {
bandwidth->in->peak = param->value.ui;
} else if (STREQ(param->field, VIR_DOMAIN_BANDWIDTH_IN_BURST)) {
bandwidth->in->burst = param->value.ui;
} else if (STREQ(param->field, VIR_DOMAIN_BANDWIDTH_IN_FLOOR)) {
bandwidth->in->floor = param->value.ui;
inboundSpecified = true;
} else if (STREQ(param->field, VIR_DOMAIN_BANDWIDTH_OUT_AVERAGE)) {
bandwidth->out->average = param->value.ui;
outboundSpecified = true;
} else if (STREQ(param->field, VIR_DOMAIN_BANDWIDTH_OUT_PEAK)) {
bandwidth->out->peak = param->value.ui;
} else if (STREQ(param->field, VIR_DOMAIN_BANDWIDTH_OUT_BURST)) {
bandwidth->out->burst = param->value.ui;
}
}
/* average or floor are mandatory, peak and burst are optional.
* So if no average or floor is given, we free inbound/outbound
* here which causes inbound/outbound to not be set. */
if (!bandwidth->in->average && !bandwidth->in->floor)
VIR_FREE(bandwidth->in);
if (!bandwidth->out->average)
VIR_FREE(bandwidth->out);
if (net) {
if (VIR_ALLOC(newBandwidth) < 0)
goto endjob;
/* virNetDevBandwidthSet() will clear any previous value of
* bandwidth parameters, so merge with old bandwidth parameters
* here to prevent them from being lost. */
if (bandwidth->in ||
(!inboundSpecified && net->bandwidth && net->bandwidth->in)) {
if (VIR_ALLOC(newBandwidth->in) < 0)
goto endjob;
memcpy(newBandwidth->in,
bandwidth->in ? bandwidth->in : net->bandwidth->in,
sizeof(*newBandwidth->in));
}
if (bandwidth->out ||
(!outboundSpecified && net->bandwidth && net->bandwidth->out)) {
if (VIR_ALLOC(newBandwidth->out) < 0)
goto endjob;
memcpy(newBandwidth->out,
bandwidth->out ? bandwidth->out : net->bandwidth->out,
sizeof(*newBandwidth->out));
}
if (!virDomainNetBandwidthChangeAllowed(net, newBandwidth))
goto endjob;
if (virNetDevBandwidthSet(net->ifname, newBandwidth, false,
!virDomainNetTypeSharesHostView(net)) < 0 ||
virDomainNetBandwidthUpdate(net, newBandwidth) < 0) {
ignore_value(virNetDevBandwidthSet(net->ifname,
net->bandwidth,
false,
!virDomainNetTypeSharesHostView(net)));
goto endjob;
}
virNetDevBandwidthFree(net->bandwidth);
if (newBandwidth->in || newBandwidth->out) {
net->bandwidth = newBandwidth;
newBandwidth = NULL;
} else {
net->bandwidth = NULL;
}
if (net->type == VIR_DOMAIN_NET_TYPE_NETWORK) {
virNetDevBandwidthFree(net->data.network.actual->bandwidth);
if (virNetDevBandwidthCopy(&net->data.network.actual->bandwidth,
net->bandwidth) < 0)
goto endjob;
}
if (virDomainSaveStatus(driver->xmlopt, cfg->stateDir, vm, driver->caps) < 0)
goto endjob;
}
if (persistentNet) {
if (!persistentNet->bandwidth) {
persistentNet->bandwidth = bandwidth;
bandwidth = NULL;
} else {
if (bandwidth->in) {
VIR_FREE(persistentNet->bandwidth->in);
persistentNet->bandwidth->in = bandwidth->in;
bandwidth->in = NULL;
} else if (inboundSpecified) {
VIR_FREE(persistentNet->bandwidth->in);
}
if (bandwidth->out) {
VIR_FREE(persistentNet->bandwidth->out);
persistentNet->bandwidth->out = bandwidth->out;
bandwidth->out = NULL;
} else if (outboundSpecified) {
VIR_FREE(persistentNet->bandwidth->out);
}
}
if (virDomainSaveConfig(cfg->configDir, driver->caps, persistentDef) < 0)
goto endjob;
}
ret = 0;
endjob:
qemuDomainObjEndJob(driver, vm);
cleanup:
virNetDevBandwidthFree(bandwidth);
virNetDevBandwidthFree(newBandwidth);
virDomainObjEndAPI(&vm);
virObjectUnref(cfg);
return ret;
}
static int
qemuDomainGetInterfaceParameters(virDomainPtr dom,
const char *device,
virTypedParameterPtr params,
int *nparams,
unsigned int flags)
{
size_t i;
virDomainObjPtr vm = NULL;
virDomainDefPtr def = NULL;
virDomainNetDefPtr net = NULL;
int ret = -1;
virCheckFlags(VIR_DOMAIN_AFFECT_LIVE |
VIR_DOMAIN_AFFECT_CONFIG |
VIR_TYPED_PARAM_STRING_OKAY, -1);
if (!(vm = qemuDomObjFromDomain(dom)))
return -1;
if (virDomainGetInterfaceParametersEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
if (!(def = virDomainObjGetOneDef(vm, flags)))
goto cleanup;
if ((*nparams) == 0) {
*nparams = QEMU_NB_BANDWIDTH_PARAM;
ret = 0;
goto cleanup;
}
if (!(net = virDomainNetFind(def, device)))
goto cleanup;
for (i = 0; i < *nparams && i < QEMU_NB_BANDWIDTH_PARAM; i++) {
switch (i) {
case 0: /* inbound.average */
if (virTypedParameterAssign(¶ms[i],
VIR_DOMAIN_BANDWIDTH_IN_AVERAGE,
VIR_TYPED_PARAM_UINT, 0) < 0)
goto cleanup;
if (net->bandwidth && net->bandwidth->in)
params[i].value.ui = net->bandwidth->in->average;
break;
case 1: /* inbound.peak */
if (virTypedParameterAssign(¶ms[i],
VIR_DOMAIN_BANDWIDTH_IN_PEAK,
VIR_TYPED_PARAM_UINT, 0) < 0)
goto cleanup;
if (net->bandwidth && net->bandwidth->in)
params[i].value.ui = net->bandwidth->in->peak;
break;
case 2: /* inbound.burst */
if (virTypedParameterAssign(¶ms[i],
VIR_DOMAIN_BANDWIDTH_IN_BURST,
VIR_TYPED_PARAM_UINT, 0) < 0)
goto cleanup;
if (net->bandwidth && net->bandwidth->in)
params[i].value.ui = net->bandwidth->in->burst;
break;
case 3: /* inbound.floor */
if (virTypedParameterAssign(¶ms[i],
VIR_DOMAIN_BANDWIDTH_IN_FLOOR,
VIR_TYPED_PARAM_UINT, 0) < 0)
goto cleanup;
if (net->bandwidth && net->bandwidth->in)
params[i].value.ui = net->bandwidth->in->floor;
break;
case 4: /* outbound.average */
if (virTypedParameterAssign(¶ms[i],
VIR_DOMAIN_BANDWIDTH_OUT_AVERAGE,
VIR_TYPED_PARAM_UINT, 0) < 0)
goto cleanup;
if (net->bandwidth && net->bandwidth->out)
params[i].value.ui = net->bandwidth->out->average;
break;
case 5: /* outbound.peak */
if (virTypedParameterAssign(¶ms[i],
VIR_DOMAIN_BANDWIDTH_OUT_PEAK,
VIR_TYPED_PARAM_UINT, 0) < 0)
goto cleanup;
if (net->bandwidth && net->bandwidth->out)
params[i].value.ui = net->bandwidth->out->peak;
break;
case 6: /* outbound.burst */
if (virTypedParameterAssign(¶ms[i],
VIR_DOMAIN_BANDWIDTH_OUT_BURST,
VIR_TYPED_PARAM_UINT, 0) < 0)
goto cleanup;
if (net->bandwidth && net->bandwidth->out)
params[i].value.ui = net->bandwidth->out->burst;
break;
/* coverity[dead_error_begin] */
default:
break;
/* should not hit here */
}
}
if (*nparams > QEMU_NB_BANDWIDTH_PARAM)
*nparams = QEMU_NB_BANDWIDTH_PARAM;
ret = 0;
cleanup:
virDomainObjEndAPI(&vm);
return ret;
}
/* This functions assumes that job QEMU_JOB_QUERY is started by a caller */
static int
qemuDomainMemoryStatsInternal(virQEMUDriverPtr driver,
virDomainObjPtr vm,
virDomainMemoryStatPtr stats,
unsigned int nr_stats)
{
int ret = -1;
long rss;
if (virDomainObjCheckActive(vm) < 0)
return -1;
if (vm->def->memballoon &&
vm->def->memballoon->model == VIR_DOMAIN_MEMBALLOON_MODEL_VIRTIO) {
qemuDomainObjEnterMonitor(driver, vm);
ret = qemuMonitorGetMemoryStats(qemuDomainGetMonitor(vm),
vm->def->memballoon, stats, nr_stats);
if (qemuDomainObjExitMonitor(driver, vm) < 0)
ret = -1;
if (ret < 0 || ret >= nr_stats)
return ret;
} else {
ret = 0;
}
if (qemuGetProcessInfo(NULL, NULL, &rss, vm->pid, 0) < 0) {
virReportError(VIR_ERR_OPERATION_FAILED, "%s",
_("cannot get RSS for domain"));
} else {
stats[ret].tag = VIR_DOMAIN_MEMORY_STAT_RSS;
stats[ret].val = rss;
ret++;
}
return ret;
}
static int
qemuDomainMemoryStats(virDomainPtr dom,
virDomainMemoryStatPtr stats,
unsigned int nr_stats,
unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
virDomainObjPtr vm;
int ret = -1;
virCheckFlags(0, -1);
if (!(vm = qemuDomObjFromDomain(dom)))
goto cleanup;
if (virDomainMemoryStatsEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_QUERY) < 0)
goto cleanup;
ret = qemuDomainMemoryStatsInternal(driver, vm, stats, nr_stats);
qemuDomainObjEndJob(driver, vm);
cleanup:
virDomainObjEndAPI(&vm);
return ret;
}
static int
qemuDomainBlockPeek(virDomainPtr dom,
const char *path,
unsigned long long offset, size_t size,
void *buffer,
unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
virDomainDiskDefPtr disk = NULL;
virDomainObjPtr vm;
char *tmpbuf = NULL;
ssize_t nread;
int ret = -1;
virCheckFlags(0, -1);
if (!(vm = qemuDomObjFromDomain(dom)))
goto cleanup;
if (virDomainBlockPeekEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
/* Check the path belongs to this domain. */
if (!(disk = virDomainDiskByName(vm->def, path, true))) {
virReportError(VIR_ERR_INVALID_ARG,
_("invalid disk or path '%s'"), path);
goto cleanup;
}
if (disk->src->format != VIR_STORAGE_FILE_RAW) {
virReportError(VIR_ERR_OPERATION_UNSUPPORTED,
_("peeking is only supported for disk with 'raw' format not '%s'"),
virStorageFileFormatTypeToString(disk->src->format));
goto cleanup;
}
if (qemuDomainStorageFileInit(driver, vm, disk->src, NULL) < 0)
goto cleanup;
if ((nread = virStorageFileRead(disk->src, offset, size, &tmpbuf)) < 0) {
if (nread == -2) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("storage file reading is not supported for "
"storage type %s (protocol: %s)"),
virStorageTypeToString(disk->src->type),
virStorageNetProtocolTypeToString(disk->src->protocol));
}
goto cleanup;
}
if (nread < size) {
virReportError(VIR_ERR_INVALID_ARG,
_("'%s' starting from %llu has only %zd bytes available"),
path, offset, nread);
goto cleanup;
}
memcpy(buffer, tmpbuf, size);
ret = 0;
cleanup:
if (disk)
virStorageFileDeinit(disk->src);
virDomainObjEndAPI(&vm);
VIR_FREE(tmpbuf);
return ret;
}
static int
qemuDomainMemoryPeek(virDomainPtr dom,
unsigned long long offset, size_t size,
void *buffer,
unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
virDomainObjPtr vm;
char *tmp = NULL;
int fd = -1, ret = -1;
qemuDomainObjPrivatePtr priv;
virQEMUDriverConfigPtr cfg = NULL;
virCheckFlags(VIR_MEMORY_VIRTUAL | VIR_MEMORY_PHYSICAL, -1);
if (!(vm = qemuDomObjFromDomain(dom)))
goto cleanup;
cfg = virQEMUDriverGetConfig(driver);
if (virDomainMemoryPeekEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
if (flags != VIR_MEMORY_VIRTUAL && flags != VIR_MEMORY_PHYSICAL) {
virReportError(VIR_ERR_INVALID_ARG,
"%s", _("flags parameter must be VIR_MEMORY_VIRTUAL or VIR_MEMORY_PHYSICAL"));
goto cleanup;
}
if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_QUERY) < 0)
goto cleanup;
if (virDomainObjCheckActive(vm) < 0)
goto endjob;
if (virAsprintf(&tmp, "%s/qemu.mem.XXXXXX", cfg->cacheDir) < 0)
goto endjob;
/* Create a temporary filename. */
if ((fd = mkostemp(tmp, O_CLOEXEC)) == -1) {
virReportSystemError(errno,
_("mkostemp(\"%s\") failed"), tmp);
goto endjob;
}
qemuSecuritySetSavedStateLabel(driver, vm, tmp);
priv = vm->privateData;
qemuDomainObjEnterMonitor(driver, vm);
if (flags == VIR_MEMORY_VIRTUAL) {
if (qemuMonitorSaveVirtualMemory(priv->mon, offset, size, tmp) < 0) {
ignore_value(qemuDomainObjExitMonitor(driver, vm));
goto endjob;
}
} else {
if (qemuMonitorSavePhysicalMemory(priv->mon, offset, size, tmp) < 0) {
ignore_value(qemuDomainObjExitMonitor(driver, vm));
goto endjob;
}
}
if (qemuDomainObjExitMonitor(driver, vm) < 0)
goto endjob;
/* Read the memory file into buffer. */
if (saferead(fd, buffer, size) == (ssize_t)-1) {
virReportSystemError(errno,
_("failed to read temporary file "
"created with template %s"), tmp);
goto endjob;
}
ret = 0;
endjob:
qemuDomainObjEndJob(driver, vm);
cleanup:
VIR_FORCE_CLOSE(fd);
if (tmp)
unlink(tmp);
VIR_FREE(tmp);
virDomainObjEndAPI(&vm);
virObjectUnref(cfg);
return ret;
}
/**
* @driver: qemu driver data
* @cfg: driver configuration data
* @vm: domain object
* @src: storage source data
* @ret_fd: pointer to return open'd file descriptor
* @ret_sb: pointer to return stat buffer (local or remote)
*
* For local storage, open the file using qemuOpenFile and then use
* fstat() to grab the stat struct data for the caller.
*
* For remote storage, attempt to access the file and grab the stat
* struct data if the remote connection supports it.
*
* Returns 0 on success with @ret_fd and @ret_sb populated, -1 on failure
*/
static int
qemuDomainStorageOpenStat(virQEMUDriverPtr driver,
virQEMUDriverConfigPtr cfg,
virDomainObjPtr vm,
virStorageSourcePtr src,
int *ret_fd,
struct stat *ret_sb)
{
if (virStorageSourceIsLocalStorage(src)) {
if ((*ret_fd = qemuOpenFile(driver, vm, src->path, O_RDONLY,
NULL)) < 0)
return -1;
if (fstat(*ret_fd, ret_sb) < 0) {
virReportSystemError(errno, _("cannot stat file '%s'"), src->path);
VIR_FORCE_CLOSE(*ret_fd);
return -1;
}
} else {
if (virStorageFileInitAs(src, cfg->user, cfg->group) < 0)
return -1;
if (virStorageFileStat(src, ret_sb) < 0) {
virStorageFileDeinit(src);
virReportSystemError(errno, _("failed to stat remote file '%s'"),
NULLSTR(src->path));
return -1;
}
}
return 0;
}
/**
* @src: storage source data
* @fd: file descriptor to close for local
*
* If local, then just close the file descriptor.
* else remote, then tear down the storage driver backend connection.
*/
static void
qemuDomainStorageCloseStat(virStorageSourcePtr src,
int *fd)
{
if (virStorageSourceIsLocalStorage(src))
VIR_FORCE_CLOSE(*fd);
else
virStorageFileDeinit(src);
}
static int
qemuDomainStorageUpdatePhysical(virQEMUDriverPtr driver,
virQEMUDriverConfigPtr cfg,
virDomainObjPtr vm,
virStorageSourcePtr src)
{
int ret;
int fd = -1;
struct stat sb;
if (virStorageSourceIsEmpty(src))
return 0;
if (qemuDomainStorageOpenStat(driver, cfg, vm, src, &fd, &sb) < 0)
return -1;
ret = virStorageSourceUpdatePhysicalSize(src, fd, &sb);
qemuDomainStorageCloseStat(src, &fd);
return ret;
}
/**
* @driver: qemu driver data
* @cfg: driver configuration data
* @vm: domain object
* @src: storage source data
*
* Refresh the capacity and allocation limits of a given storage source.
*
* Assumes that the caller has already obtained a domain job and only
* called for an offline domain. Being offline is particularly important
* since reading a file while qemu is writing it risks the reader seeing
* bogus data or avoiding opening a file in order to get stat data.
*
* We always want to check current on-disk statistics (as users have been
* known to change offline images behind our backs).
*
* For read-only disks, nothing should be changing unless the user has
* requested a block-commit action. For read-write disks, we know some
* special cases: capacity should not change without a block-resize (where
* capacity is the only stat that requires reading a file, and even then,
* only for non-raw files); and physical size of a raw image or of a
* block device should likewise not be changing without block-resize.
* On the other hand, allocation of a raw file can change (if the file
* is sparse, but the amount of sparseness changes due to writes or
* punching holes), and physical size of a non-raw file can change.
*
* Returns 0 on success, -1 on failure
*/
static int
qemuStorageLimitsRefresh(virQEMUDriverPtr driver,
virQEMUDriverConfigPtr cfg,
virDomainObjPtr vm,
virStorageSourcePtr src)
{
int ret = -1;
int fd = -1;
struct stat sb;
char *buf = NULL;
ssize_t len;
if (qemuDomainStorageOpenStat(driver, cfg, vm, src, &fd, &sb) < 0)
goto cleanup;
if (virStorageSourceIsLocalStorage(src)) {
if ((len = virFileReadHeaderFD(fd, VIR_STORAGE_MAX_HEADER, &buf)) < 0) {
virReportSystemError(errno, _("cannot read header '%s'"),
src->path);
goto cleanup;
}
} else {
if ((len = virStorageFileRead(src, 0, VIR_STORAGE_MAX_HEADER, &buf)) < 0)
goto cleanup;
}
if (virStorageSourceUpdateBackingSizes(src, fd, &sb) < 0)
goto cleanup;
if (virStorageSourceUpdateCapacity(src, buf, len, false) < 0)
goto cleanup;
/* If guest is not using raw disk format and is on a host block
* device, then leave the value unspecified, so caller knows to
* query the highest allocated extent from QEMU
*/
if (virStorageSourceGetActualType(src) == VIR_STORAGE_TYPE_BLOCK &&
src->format != VIR_STORAGE_FILE_RAW &&
S_ISBLK(sb.st_mode))
src->allocation = 0;
ret = 0;
cleanup:
VIR_FREE(buf);
qemuDomainStorageCloseStat(src, &fd);
return ret;
}
static int
qemuDomainGetBlockInfo(virDomainPtr dom,
const char *path,
virDomainBlockInfoPtr info,
unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
virDomainObjPtr vm;
int ret = -1;
virDomainDiskDefPtr disk;
virQEMUDriverConfigPtr cfg = NULL;
qemuBlockStatsPtr entry = NULL;
virCheckFlags(0, -1);
if (!(vm = qemuDomObjFromDomain(dom)))
return -1;
cfg = virQEMUDriverGetConfig(driver);
if (virDomainGetBlockInfoEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_QUERY) < 0)
goto cleanup;
if (!(disk = virDomainDiskByName(vm->def, path, false))) {
virReportError(VIR_ERR_INVALID_ARG,
_("invalid path %s not assigned to domain"), path);
goto endjob;
}
if (virStorageSourceIsEmpty(disk->src)) {
virReportError(VIR_ERR_INVALID_ARG,
_("disk '%s' does not currently have a source assigned"),
path);
goto endjob;
}
/* for inactive domains we have to peek into the files */
if (!virDomainObjIsActive(vm)) {
if ((qemuStorageLimitsRefresh(driver, cfg, vm, disk->src)) < 0)
goto endjob;
info->capacity = disk->src->capacity;
info->allocation = disk->src->allocation;
info->physical = disk->src->physical;
ret = 0;
goto endjob;
}
if (qemuDomainBlocksStatsGather(driver, vm, path, true, &entry) < 0)
goto endjob;
if (!entry->wr_highest_offset_valid) {
info->allocation = entry->physical;
} else {
if (virStorageSourceGetActualType(disk->src) == VIR_STORAGE_TYPE_FILE &&
disk->src->format == VIR_STORAGE_FILE_QCOW2)
info->allocation = entry->physical;
else
info->allocation = entry->wr_highest_offset;
}
/* Unlike GetStatsBlock, this API has defined the expected return values
* for allocation and physical slightly differently.
*
* Having a zero for either or if they're the same is an indication that
* there's a sparse file backing this device. In this case, we'll force
* the setting of physical based on the on disk file size.
*
* Additionally, if qemu hasn't written to the file yet, then set the
* allocation to whatever qemu returned for physical (e.g. the "actual-
* size" from the json query) as that will match the expected allocation
* value for this API. NB: May still be 0 for block. */
if (entry->physical == 0 || info->allocation == 0 ||
info->allocation == entry->physical) {
if (info->allocation == 0)
info->allocation = entry->physical;
if (qemuDomainStorageUpdatePhysical(driver, cfg, vm, disk->src) == 0) {
info->physical = disk->src->physical;
} else {
virResetLastError();
info->physical = entry->physical;
}
} else {
info->physical = entry->physical;
}
info->capacity = entry->capacity;
ret = 0;
endjob:
qemuDomainObjEndJob(driver, vm);
cleanup:
VIR_FREE(entry);
virDomainObjEndAPI(&vm);
virObjectUnref(cfg);
return ret;
}
static int
qemuConnectDomainEventRegister(virConnectPtr conn,
virConnectDomainEventCallback callback,
void *opaque,
virFreeCallback freecb)
{
virQEMUDriverPtr driver = conn->privateData;
int ret = -1;
if (virConnectDomainEventRegisterEnsureACL(conn) < 0)
goto cleanup;
if (virDomainEventStateRegister(conn,
driver->domainEventState,
callback, opaque, freecb) < 0)
goto cleanup;
ret = 0;
cleanup:
return ret;
}
static int
qemuConnectDomainEventDeregister(virConnectPtr conn,
virConnectDomainEventCallback callback)
{
virQEMUDriverPtr driver = conn->privateData;
int ret = -1;
if (virConnectDomainEventDeregisterEnsureACL(conn) < 0)
goto cleanup;
if (virDomainEventStateDeregister(conn,
driver->domainEventState,
callback) < 0)
goto cleanup;
ret = 0;
cleanup:
return ret;
}
static int
qemuConnectDomainEventRegisterAny(virConnectPtr conn,
virDomainPtr dom,
int eventID,
virConnectDomainEventGenericCallback callback,
void *opaque,
virFreeCallback freecb)
{
virQEMUDriverPtr driver = conn->privateData;
int ret = -1;
if (virConnectDomainEventRegisterAnyEnsureACL(conn) < 0)
goto cleanup;
if (virDomainEventStateRegisterID(conn,
driver->domainEventState,
dom, eventID,
callback, opaque, freecb, &ret) < 0)
ret = -1;
cleanup:
return ret;
}
static int
qemuConnectDomainEventDeregisterAny(virConnectPtr conn,
int callbackID)
{
virQEMUDriverPtr driver = conn->privateData;
int ret = -1;
if (virConnectDomainEventDeregisterAnyEnsureACL(conn) < 0)
goto cleanup;
if (virObjectEventStateDeregisterID(conn,
driver->domainEventState,
callbackID, true) < 0)
goto cleanup;
ret = 0;
cleanup:
return ret;
}
/*******************************************************************
* Migration Protocol Version 2
*******************************************************************/
/* Prepare is the first step, and it runs on the destination host.
*
* This version starts an empty VM listening on a localhost TCP port, and
* sets up the corresponding virStream to handle the incoming data.
*/
static int
qemuDomainMigratePrepareTunnel(virConnectPtr dconn,
virStreamPtr st,
unsigned long flags,
const char *dname,
unsigned long resource ATTRIBUTE_UNUSED,
const char *dom_xml)
{
virQEMUDriverPtr driver = dconn->privateData;
virDomainDefPtr def = NULL;
char *origname = NULL;
qemuMigrationParamsPtr migParams = NULL;
int ret = -1;
virCheckFlags(QEMU_MIGRATION_FLAGS, -1);
if (!(flags & VIR_MIGRATE_TUNNELLED)) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("PrepareTunnel called but no TUNNELLED flag set"));
goto cleanup;
}
if (!(migParams = qemuMigrationParamsFromFlags(NULL, 0, flags,
QEMU_MIGRATION_DESTINATION)))
goto cleanup;
if (virLockManagerPluginUsesState(driver->lockManager)) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("Cannot use migrate v2 protocol with lock manager %s"),
virLockManagerPluginGetName(driver->lockManager));
goto cleanup;
}
if (!(def = qemuMigrationAnyPrepareDef(driver, dom_xml, dname, &origname)))
goto cleanup;
if (virDomainMigratePrepareTunnelEnsureACL(dconn, def) < 0)
goto cleanup;
ret = qemuMigrationDstPrepareTunnel(driver, dconn,
NULL, 0, NULL, NULL, /* No cookies in v2 */
st, &def, origname, migParams, flags);
cleanup:
qemuMigrationParamsFree(migParams);
VIR_FREE(origname);
virDomainDefFree(def);
return ret;
}
/* Prepare is the first step, and it runs on the destination host.
*
* This starts an empty VM listening on a TCP port.
*/
static int ATTRIBUTE_NONNULL(5)
qemuDomainMigratePrepare2(virConnectPtr dconn,
char **cookie ATTRIBUTE_UNUSED,
int *cookielen ATTRIBUTE_UNUSED,
const char *uri_in,
char **uri_out,
unsigned long flags,
const char *dname,
unsigned long resource ATTRIBUTE_UNUSED,
const char *dom_xml)
{
virQEMUDriverPtr driver = dconn->privateData;
virDomainDefPtr def = NULL;
char *origname = NULL;
qemuMigrationParamsPtr migParams = NULL;
int ret = -1;
virCheckFlags(QEMU_MIGRATION_FLAGS, -1);
if (flags & VIR_MIGRATE_TUNNELLED) {
/* this is a logical error; we never should have gotten here with
* VIR_MIGRATE_TUNNELLED set
*/
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Tunnelled migration requested but invalid "
"RPC method called"));
goto cleanup;
}
if (!(migParams = qemuMigrationParamsFromFlags(NULL, 0, flags,
QEMU_MIGRATION_DESTINATION)))
goto cleanup;
if (virLockManagerPluginUsesState(driver->lockManager)) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("Cannot use migrate v2 protocol with lock manager %s"),
virLockManagerPluginGetName(driver->lockManager));
goto cleanup;
}
if (!(def = qemuMigrationAnyPrepareDef(driver, dom_xml, dname, &origname)))
goto cleanup;
if (virDomainMigratePrepare2EnsureACL(dconn, def) < 0)
goto cleanup;
/* Do not use cookies in v2 protocol, since the cookie
* length was not sufficiently large, causing failures
* migrating between old & new libvirtd
*/
ret = qemuMigrationDstPrepareDirect(driver, dconn,
NULL, 0, NULL, NULL, /* No cookies */
uri_in, uri_out,
&def, origname, NULL, 0, NULL, 0,
migParams, flags);
cleanup:
qemuMigrationParamsFree(migParams);
VIR_FREE(origname);
virDomainDefFree(def);
return ret;
}
/* Perform is the second step, and it runs on the source host. */
static int
qemuDomainMigratePerform(virDomainPtr dom,
const char *cookie,
int cookielen,
const char *uri,
unsigned long flags,
const char *dname,
unsigned long resource)
{
virQEMUDriverPtr driver = dom->conn->privateData;
virDomainObjPtr vm;
int ret = -1;
const char *dconnuri = NULL;
qemuMigrationParamsPtr migParams = NULL;
virCheckFlags(QEMU_MIGRATION_FLAGS, -1);
if (virLockManagerPluginUsesState(driver->lockManager)) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("Cannot use migrate v2 protocol with lock manager %s"),
virLockManagerPluginGetName(driver->lockManager));
goto cleanup;
}
if (!(migParams = qemuMigrationParamsFromFlags(NULL, 0, flags,
QEMU_MIGRATION_SOURCE)))
goto cleanup;
if (!(vm = qemuDomObjFromDomain(dom)))
goto cleanup;
if (virDomainMigratePerformEnsureACL(dom->conn, vm->def) < 0) {
virDomainObjEndAPI(&vm);
goto cleanup;
}
if (flags & VIR_MIGRATE_PEER2PEER) {
dconnuri = uri;
uri = NULL;
}
/* Do not output cookies in v2 protocol, since the cookie
* length was not sufficiently large, causing failures
* migrating between old & new libvirtd.
*
* Consume any cookie we were able to decode though
*/
ret = qemuMigrationSrcPerform(driver, dom->conn, vm, NULL,
NULL, dconnuri, uri, NULL, NULL, 0, NULL, 0,
migParams, cookie, cookielen,
NULL, NULL, /* No output cookies in v2 */
flags, dname, resource, false);
cleanup:
qemuMigrationParamsFree(migParams);
return ret;
}
/* Finish is the third and final step, and it runs on the destination host. */
static virDomainPtr
qemuDomainMigrateFinish2(virConnectPtr dconn,
const char *dname,
const char *cookie ATTRIBUTE_UNUSED,
int cookielen ATTRIBUTE_UNUSED,
const char *uri ATTRIBUTE_UNUSED,
unsigned long flags,
int retcode)
{
virQEMUDriverPtr driver = dconn->privateData;
virDomainObjPtr vm;
virDomainPtr dom = NULL;
virCheckFlags(QEMU_MIGRATION_FLAGS, NULL);
vm = virDomainObjListFindByName(driver->domains, dname);
if (!vm) {
virReportError(VIR_ERR_NO_DOMAIN,
_("no domain with matching name '%s'"), dname);
qemuMigrationDstErrorReport(driver, dname);
goto cleanup;
}
if (virDomainMigrateFinish2EnsureACL(dconn, vm->def) < 0) {
virDomainObjEndAPI(&vm);
goto cleanup;
}
/* Do not use cookies in v2 protocol, since the cookie
* length was not sufficiently large, causing failures
* migrating between old & new libvirtd
*/
dom = qemuMigrationDstFinish(driver, dconn, vm,
NULL, 0, NULL, NULL, /* No cookies */
flags, retcode, false);
cleanup:
return dom;
}
/*******************************************************************
* Migration Protocol Version 3
*******************************************************************/
static char *
qemuDomainMigrateBegin3(virDomainPtr domain,
const char *xmlin,
char **cookieout,
int *cookieoutlen,
unsigned long flags,
const char *dname,
unsigned long resource ATTRIBUTE_UNUSED)
{
virDomainObjPtr vm;
virCheckFlags(QEMU_MIGRATION_FLAGS, NULL);
if (!(vm = qemuDomObjFromDomain(domain)))
return NULL;
if (virDomainMigrateBegin3EnsureACL(domain->conn, vm->def) < 0) {
virDomainObjEndAPI(&vm);
return NULL;
}
return qemuMigrationSrcBegin(domain->conn, vm, xmlin, dname,
cookieout, cookieoutlen, 0, NULL, flags);
}
static char *
qemuDomainMigrateBegin3Params(virDomainPtr domain,
virTypedParameterPtr params,
int nparams,
char **cookieout,
int *cookieoutlen,
unsigned int flags)
{
const char *xmlin = NULL;
const char *dname = NULL;
const char **migrate_disks = NULL;
int nmigrate_disks;
char *ret = NULL;
virDomainObjPtr vm;
virCheckFlags(QEMU_MIGRATION_FLAGS, NULL);
if (virTypedParamsValidate(params, nparams, QEMU_MIGRATION_PARAMETERS) < 0)
goto cleanup;
if (virTypedParamsGetString(params, nparams,
VIR_MIGRATE_PARAM_DEST_XML,
&xmlin) < 0 ||
virTypedParamsGetString(params, nparams,
VIR_MIGRATE_PARAM_DEST_NAME,
&dname) < 0)
goto cleanup;
nmigrate_disks = virTypedParamsGetStringList(params, nparams,
VIR_MIGRATE_PARAM_MIGRATE_DISKS,
&migrate_disks);
if (nmigrate_disks < 0)
goto cleanup;
if (!(vm = qemuDomObjFromDomain(domain)))
goto cleanup;
if (virDomainMigrateBegin3ParamsEnsureACL(domain->conn, vm->def) < 0) {
virDomainObjEndAPI(&vm);
goto cleanup;
}
ret = qemuMigrationSrcBegin(domain->conn, vm, xmlin, dname,
cookieout, cookieoutlen,
nmigrate_disks, migrate_disks, flags);
cleanup:
VIR_FREE(migrate_disks);
return ret;
}
static int
qemuDomainMigratePrepare3(virConnectPtr dconn,
const char *cookiein,
int cookieinlen,
char **cookieout,
int *cookieoutlen,
const char *uri_in,
char **uri_out,
unsigned long flags,
const char *dname,
unsigned long resource ATTRIBUTE_UNUSED,
const char *dom_xml)
{
virQEMUDriverPtr driver = dconn->privateData;
virDomainDefPtr def = NULL;
char *origname = NULL;
qemuMigrationParamsPtr migParams = NULL;
int ret = -1;
virCheckFlags(QEMU_MIGRATION_FLAGS, -1);
if (flags & VIR_MIGRATE_TUNNELLED) {
/* this is a logical error; we never should have gotten here with
* VIR_MIGRATE_TUNNELLED set
*/
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Tunnelled migration requested but invalid "
"RPC method called"));
goto cleanup;
}
if (!(migParams = qemuMigrationParamsFromFlags(NULL, 0, flags,
QEMU_MIGRATION_DESTINATION)))
goto cleanup;
if (!(def = qemuMigrationAnyPrepareDef(driver, dom_xml, dname, &origname)))
goto cleanup;
if (virDomainMigratePrepare3EnsureACL(dconn, def) < 0)
goto cleanup;
ret = qemuMigrationDstPrepareDirect(driver, dconn,
cookiein, cookieinlen,
cookieout, cookieoutlen,
uri_in, uri_out,
&def, origname, NULL, 0, NULL, 0,
migParams, flags);
cleanup:
qemuMigrationParamsFree(migParams);
VIR_FREE(origname);
virDomainDefFree(def);
return ret;
}
static int
qemuDomainMigratePrepare3Params(virConnectPtr dconn,
virTypedParameterPtr params,
int nparams,
const char *cookiein,
int cookieinlen,
char **cookieout,
int *cookieoutlen,
char **uri_out,
unsigned int flags)
{
virQEMUDriverPtr driver = dconn->privateData;
virQEMUDriverConfigPtr cfg = virQEMUDriverGetConfig(driver);
virDomainDefPtr def = NULL;
const char *dom_xml = NULL;
const char *dname = NULL;
const char *uri_in = NULL;
const char *listenAddress = cfg->migrationAddress;
int nbdPort = 0;
int nmigrate_disks;
const char **migrate_disks = NULL;
char *origname = NULL;
qemuMigrationParamsPtr migParams = NULL;
int ret = -1;
virCheckFlagsGoto(QEMU_MIGRATION_FLAGS, cleanup);
if (virTypedParamsValidate(params, nparams, QEMU_MIGRATION_PARAMETERS) < 0)
goto cleanup;
if (virTypedParamsGetString(params, nparams,
VIR_MIGRATE_PARAM_DEST_XML,
&dom_xml) < 0 ||
virTypedParamsGetString(params, nparams,
VIR_MIGRATE_PARAM_DEST_NAME,
&dname) < 0 ||
virTypedParamsGetString(params, nparams,
VIR_MIGRATE_PARAM_URI,
&uri_in) < 0 ||
virTypedParamsGetString(params, nparams,
VIR_MIGRATE_PARAM_LISTEN_ADDRESS,
&listenAddress) < 0 ||
virTypedParamsGetInt(params, nparams,
VIR_MIGRATE_PARAM_DISKS_PORT,
&nbdPort) < 0)
goto cleanup;
nmigrate_disks = virTypedParamsGetStringList(params, nparams,
VIR_MIGRATE_PARAM_MIGRATE_DISKS,
&migrate_disks);
if (nmigrate_disks < 0)
goto cleanup;
if (!(migParams = qemuMigrationParamsFromFlags(params, nparams, flags,
QEMU_MIGRATION_DESTINATION)))
goto cleanup;
if (flags & VIR_MIGRATE_TUNNELLED) {
/* this is a logical error; we never should have gotten here with
* VIR_MIGRATE_TUNNELLED set
*/
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Tunnelled migration requested but invalid "
"RPC method called"));
goto cleanup;
}
if (!(def = qemuMigrationAnyPrepareDef(driver, dom_xml, dname, &origname)))
goto cleanup;
if (virDomainMigratePrepare3ParamsEnsureACL(dconn, def) < 0)
goto cleanup;
ret = qemuMigrationDstPrepareDirect(driver, dconn,
cookiein, cookieinlen,
cookieout, cookieoutlen,
uri_in, uri_out,
&def, origname, listenAddress,
nmigrate_disks, migrate_disks, nbdPort,
migParams, flags);
cleanup:
qemuMigrationParamsFree(migParams);
VIR_FREE(migrate_disks);
VIR_FREE(origname);
virDomainDefFree(def);
virObjectUnref(cfg);
return ret;
}
static int
qemuDomainMigratePrepareTunnel3(virConnectPtr dconn,
virStreamPtr st,
const char *cookiein,
int cookieinlen,
char **cookieout,
int *cookieoutlen,
unsigned long flags,
const char *dname,
unsigned long resource ATTRIBUTE_UNUSED,
const char *dom_xml)
{
virQEMUDriverPtr driver = dconn->privateData;
virDomainDefPtr def = NULL;
char *origname = NULL;
qemuMigrationParamsPtr migParams = NULL;
int ret = -1;
virCheckFlags(QEMU_MIGRATION_FLAGS, -1);
if (!(flags & VIR_MIGRATE_TUNNELLED)) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("PrepareTunnel called but no TUNNELLED flag set"));
goto cleanup;
}
if (!(migParams = qemuMigrationParamsFromFlags(NULL, 0, flags,
QEMU_MIGRATION_DESTINATION)))
goto cleanup;
if (!(def = qemuMigrationAnyPrepareDef(driver, dom_xml, dname, &origname)))
goto cleanup;
if (virDomainMigratePrepareTunnel3EnsureACL(dconn, def) < 0)
goto cleanup;
ret = qemuMigrationDstPrepareTunnel(driver, dconn,
cookiein, cookieinlen,
cookieout, cookieoutlen,
st, &def, origname, migParams, flags);
cleanup:
qemuMigrationParamsFree(migParams);
VIR_FREE(origname);
virDomainDefFree(def);
return ret;
}
static int
qemuDomainMigratePrepareTunnel3Params(virConnectPtr dconn,
virStreamPtr st,
virTypedParameterPtr params,
int nparams,
const char *cookiein,
int cookieinlen,
char **cookieout,
int *cookieoutlen,
unsigned int flags)
{
virQEMUDriverPtr driver = dconn->privateData;
virDomainDefPtr def = NULL;
const char *dom_xml = NULL;
const char *dname = NULL;
char *origname = NULL;
qemuMigrationParamsPtr migParams = NULL;
int ret = -1;
virCheckFlags(QEMU_MIGRATION_FLAGS, -1);
if (virTypedParamsValidate(params, nparams, QEMU_MIGRATION_PARAMETERS) < 0)
return -1;
if (virTypedParamsGetString(params, nparams,
VIR_MIGRATE_PARAM_DEST_XML,
&dom_xml) < 0 ||
virTypedParamsGetString(params, nparams,
VIR_MIGRATE_PARAM_DEST_NAME,
&dname) < 0)
return -1;
if (!(flags & VIR_MIGRATE_TUNNELLED)) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("PrepareTunnel called but no TUNNELLED flag set"));
goto cleanup;
}
if (!(migParams = qemuMigrationParamsFromFlags(params, nparams, flags,
QEMU_MIGRATION_DESTINATION)))
goto cleanup;
if (!(def = qemuMigrationAnyPrepareDef(driver, dom_xml, dname, &origname)))
goto cleanup;
if (virDomainMigratePrepareTunnel3ParamsEnsureACL(dconn, def) < 0)
goto cleanup;
ret = qemuMigrationDstPrepareTunnel(driver, dconn,
cookiein, cookieinlen,
cookieout, cookieoutlen,
st, &def, origname, migParams, flags);
cleanup:
qemuMigrationParamsFree(migParams);
VIR_FREE(origname);
virDomainDefFree(def);
return ret;
}
static int
qemuDomainMigratePerform3(virDomainPtr dom,
const char *xmlin,
const char *cookiein,
int cookieinlen,
char **cookieout,
int *cookieoutlen,
const char *dconnuri,
const char *uri,
unsigned long flags,
const char *dname,
unsigned long resource)
{
virQEMUDriverPtr driver = dom->conn->privateData;
virDomainObjPtr vm;
qemuMigrationParamsPtr migParams = NULL;
int ret = -1;
virCheckFlags(QEMU_MIGRATION_FLAGS, -1);
if (!(migParams = qemuMigrationParamsFromFlags(NULL, 0, flags,
QEMU_MIGRATION_SOURCE)))
goto cleanup;
if (!(vm = qemuDomObjFromDomain(dom)))
goto cleanup;
if (virDomainMigratePerform3EnsureACL(dom->conn, vm->def) < 0) {
virDomainObjEndAPI(&vm);
goto cleanup;
}
ret = qemuMigrationSrcPerform(driver, dom->conn, vm, xmlin, NULL,
dconnuri, uri, NULL, NULL, 0, NULL, 0,
migParams,
cookiein, cookieinlen,
cookieout, cookieoutlen,
flags, dname, resource, true);
cleanup:
qemuMigrationParamsFree(migParams);
return ret;
}
static int
qemuDomainMigratePerform3Params(virDomainPtr dom,
const char *dconnuri,
virTypedParameterPtr params,
int nparams,
const char *cookiein,
int cookieinlen,
char **cookieout,
int *cookieoutlen,
unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
virDomainObjPtr vm;
const char *dom_xml = NULL;
const char *persist_xml = NULL;
const char *dname = NULL;
const char *uri = NULL;
const char *graphicsuri = NULL;
const char *listenAddress = NULL;
int nmigrate_disks;
const char **migrate_disks = NULL;
unsigned long long bandwidth = 0;
int nbdPort = 0;
qemuMigrationParamsPtr migParams = NULL;
int ret = -1;
virCheckFlags(QEMU_MIGRATION_FLAGS, -1);
if (virTypedParamsValidate(params, nparams, QEMU_MIGRATION_PARAMETERS) < 0)
return ret;
if (virTypedParamsGetString(params, nparams,
VIR_MIGRATE_PARAM_DEST_XML,
&dom_xml) < 0 ||
virTypedParamsGetString(params, nparams,
VIR_MIGRATE_PARAM_DEST_NAME,
&dname) < 0 ||
virTypedParamsGetString(params, nparams,
VIR_MIGRATE_PARAM_URI,
&uri) < 0 ||
virTypedParamsGetULLong(params, nparams,
VIR_MIGRATE_PARAM_BANDWIDTH,
&bandwidth) < 0 ||
virTypedParamsGetString(params, nparams,
VIR_MIGRATE_PARAM_GRAPHICS_URI,
&graphicsuri) < 0 ||
virTypedParamsGetString(params, nparams,
VIR_MIGRATE_PARAM_LISTEN_ADDRESS,
&listenAddress) < 0 ||
virTypedParamsGetInt(params, nparams,
VIR_MIGRATE_PARAM_DISKS_PORT,
&nbdPort) < 0 ||
virTypedParamsGetString(params, nparams,
VIR_MIGRATE_PARAM_PERSIST_XML,
&persist_xml) < 0)
goto cleanup;
nmigrate_disks = virTypedParamsGetStringList(params, nparams,
VIR_MIGRATE_PARAM_MIGRATE_DISKS,
&migrate_disks);
if (nmigrate_disks < 0)
goto cleanup;
if (!(migParams = qemuMigrationParamsFromFlags(params, nparams, flags,
QEMU_MIGRATION_SOURCE)))
goto cleanup;
if (!(vm = qemuDomObjFromDomain(dom)))
goto cleanup;
if (virDomainMigratePerform3ParamsEnsureACL(dom->conn, vm->def) < 0) {
virDomainObjEndAPI(&vm);
goto cleanup;
}
ret = qemuMigrationSrcPerform(driver, dom->conn, vm, dom_xml, persist_xml,
dconnuri, uri, graphicsuri, listenAddress,
nmigrate_disks, migrate_disks, nbdPort,
migParams,
cookiein, cookieinlen, cookieout, cookieoutlen,
flags, dname, bandwidth, true);
cleanup:
qemuMigrationParamsFree(migParams);
VIR_FREE(migrate_disks);
return ret;
}
static virDomainPtr
qemuDomainMigrateFinish3(virConnectPtr dconn,
const char *dname,
const char *cookiein,
int cookieinlen,
char **cookieout,
int *cookieoutlen,
const char *dconnuri ATTRIBUTE_UNUSED,
const char *uri ATTRIBUTE_UNUSED,
unsigned long flags,
int cancelled)
{
virQEMUDriverPtr driver = dconn->privateData;
virDomainObjPtr vm;
virCheckFlags(QEMU_MIGRATION_FLAGS, NULL);
if (!dname) {
virReportError(VIR_ERR_NO_DOMAIN, "%s", _("missing domain name"));
return NULL;
}
vm = virDomainObjListFindByName(driver->domains, dname);
if (!vm) {
virReportError(VIR_ERR_NO_DOMAIN,
_("no domain with matching name '%s'"), dname);
qemuMigrationDstErrorReport(driver, dname);
return NULL;
}
if (virDomainMigrateFinish3EnsureACL(dconn, vm->def) < 0) {
virDomainObjEndAPI(&vm);
return NULL;
}
return qemuMigrationDstFinish(driver, dconn, vm,
cookiein, cookieinlen,
cookieout, cookieoutlen,
flags, cancelled, true);
}
static virDomainPtr
qemuDomainMigrateFinish3Params(virConnectPtr dconn,
virTypedParameterPtr params,
int nparams,
const char *cookiein,
int cookieinlen,
char **cookieout,
int *cookieoutlen,
unsigned int flags,
int cancelled)
{
virQEMUDriverPtr driver = dconn->privateData;
virDomainObjPtr vm;
const char *dname = NULL;
virCheckFlags(QEMU_MIGRATION_FLAGS, NULL);
if (virTypedParamsValidate(params, nparams, QEMU_MIGRATION_PARAMETERS) < 0)
return NULL;
if (virTypedParamsGetString(params, nparams,
VIR_MIGRATE_PARAM_DEST_NAME,
&dname) < 0)
return NULL;
if (!dname) {
virReportError(VIR_ERR_NO_DOMAIN, "%s", _("missing domain name"));
return NULL;
}
vm = virDomainObjListFindByName(driver->domains, dname);
if (!vm) {
virReportError(VIR_ERR_NO_DOMAIN,
_("no domain with matching name '%s'"), dname);
qemuMigrationDstErrorReport(driver, dname);
return NULL;
}
if (virDomainMigrateFinish3ParamsEnsureACL(dconn, vm->def) < 0) {
virDomainObjEndAPI(&vm);
return NULL;
}
return qemuMigrationDstFinish(driver, dconn, vm,
cookiein, cookieinlen,
cookieout, cookieoutlen,
flags, cancelled, true);
}
static int
qemuDomainMigrateConfirm3(virDomainPtr domain,
const char *cookiein,
int cookieinlen,
unsigned long flags,
int cancelled)
{
virDomainObjPtr vm;
virCheckFlags(QEMU_MIGRATION_FLAGS, -1);
if (!(vm = qemuDomObjFromDomain(domain)))
return -1;
if (virDomainMigrateConfirm3EnsureACL(domain->conn, vm->def) < 0) {
virDomainObjEndAPI(&vm);
return -1;
}
return qemuMigrationSrcConfirm(domain->conn->privateData, vm, cookiein, cookieinlen,
flags, cancelled);
}
static int
qemuDomainMigrateConfirm3Params(virDomainPtr domain,
virTypedParameterPtr params,
int nparams,
const char *cookiein,
int cookieinlen,
unsigned int flags,
int cancelled)
{
virDomainObjPtr vm;
virCheckFlags(QEMU_MIGRATION_FLAGS, -1);
if (virTypedParamsValidate(params, nparams, QEMU_MIGRATION_PARAMETERS) < 0)
return -1;
if (!(vm = qemuDomObjFromDomain(domain)))
return -1;
if (virDomainMigrateConfirm3ParamsEnsureACL(domain->conn, vm->def) < 0) {
virDomainObjEndAPI(&vm);
return -1;
}
return qemuMigrationSrcConfirm(domain->conn->privateData, vm, cookiein, cookieinlen,
flags, cancelled);
}
static int
qemuNodeDeviceGetPCIInfo(virNodeDeviceDefPtr def,
unsigned *domain,
unsigned *bus,
unsigned *slot,
unsigned *function)
{
virNodeDevCapsDefPtr cap;
int ret = -1;
cap = def->caps;
while (cap) {
if (cap->data.type == VIR_NODE_DEV_CAP_PCI_DEV) {
*domain = cap->data.pci_dev.domain;
*bus = cap->data.pci_dev.bus;
*slot = cap->data.pci_dev.slot;
*function = cap->data.pci_dev.function;
break;
}
cap = cap->next;
}
if (!cap) {
virReportError(VIR_ERR_INVALID_ARG,
_("device %s is not a PCI device"), def->name);
goto out;
}
ret = 0;
out:
return ret;
}
static int
qemuNodeDeviceDetachFlags(virNodeDevicePtr dev,
const char *driverName,
unsigned int flags)
{
virQEMUDriverPtr driver = dev->conn->privateData;
virPCIDevicePtr pci = NULL;
unsigned domain = 0, bus = 0, slot = 0, function = 0;
int ret = -1;
virNodeDeviceDefPtr def = NULL;
char *xml = NULL;
bool legacy = qemuHostdevHostSupportsPassthroughLegacy();
bool vfio = qemuHostdevHostSupportsPassthroughVFIO();
virHostdevManagerPtr hostdev_mgr = driver->hostdevMgr;
virCheckFlags(0, -1);
xml = virNodeDeviceGetXMLDesc(dev, 0);
if (!xml)
goto cleanup;
def = virNodeDeviceDefParseString(xml, EXISTING_DEVICE, NULL);
if (!def)
goto cleanup;
if (virNodeDeviceDetachFlagsEnsureACL(dev->conn, def) < 0)
goto cleanup;
if (qemuNodeDeviceGetPCIInfo(def, &domain, &bus, &slot, &function) < 0)
goto cleanup;
pci = virPCIDeviceNew(domain, bus, slot, function);
if (!pci)
goto cleanup;
if (!driverName) {
if (vfio) {
driverName = "vfio";
} else if (legacy) {
driverName = "kvm";
} else {
virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s",
_("neither VFIO nor KVM device assignment is "
"currently supported on this system"));
goto cleanup;
}
}
if (STREQ(driverName, "vfio")) {
if (!vfio) {
virReportError(VIR_ERR_ARGUMENT_UNSUPPORTED, "%s",
_("VFIO device assignment is currently not "
"supported on this system"));
goto cleanup;
}
virPCIDeviceSetStubDriver(pci, VIR_PCI_STUB_DRIVER_VFIO);
} else if (STREQ(driverName, "kvm")) {
if (!legacy) {
virReportError(VIR_ERR_ARGUMENT_UNSUPPORTED, "%s",
_("KVM device assignment is currently not "
"supported on this system"));
goto cleanup;
}
virPCIDeviceSetStubDriver(pci, VIR_PCI_STUB_DRIVER_KVM);
} else {
virReportError(VIR_ERR_INVALID_ARG,
_("unknown driver name '%s'"), driverName);
goto cleanup;
}
ret = virHostdevPCINodeDeviceDetach(hostdev_mgr, pci);
cleanup:
virPCIDeviceFree(pci);
virNodeDeviceDefFree(def);
VIR_FREE(xml);
return ret;
}
static int
qemuNodeDeviceDettach(virNodeDevicePtr dev)
{
return qemuNodeDeviceDetachFlags(dev, NULL, 0);
}
static int
qemuNodeDeviceReAttach(virNodeDevicePtr dev)
{
virQEMUDriverPtr driver = dev->conn->privateData;
virPCIDevicePtr pci = NULL;
unsigned domain = 0, bus = 0, slot = 0, function = 0;
int ret = -1;
virNodeDeviceDefPtr def = NULL;
char *xml = NULL;
virHostdevManagerPtr hostdev_mgr = driver->hostdevMgr;
xml = virNodeDeviceGetXMLDesc(dev, 0);
if (!xml)
goto cleanup;
def = virNodeDeviceDefParseString(xml, EXISTING_DEVICE, NULL);
if (!def)
goto cleanup;
if (virNodeDeviceReAttachEnsureACL(dev->conn, def) < 0)
goto cleanup;
if (qemuNodeDeviceGetPCIInfo(def, &domain, &bus, &slot, &function) < 0)
goto cleanup;
pci = virPCIDeviceNew(domain, bus, slot, function);
if (!pci)
goto cleanup;
ret = virHostdevPCINodeDeviceReAttach(hostdev_mgr, pci);
virPCIDeviceFree(pci);
cleanup:
virNodeDeviceDefFree(def);
VIR_FREE(xml);
return ret;
}
static int
qemuNodeDeviceReset(virNodeDevicePtr dev)
{
virQEMUDriverPtr driver = dev->conn->privateData;
virPCIDevicePtr pci;
unsigned domain = 0, bus = 0, slot = 0, function = 0;
int ret = -1;
virNodeDeviceDefPtr def = NULL;
char *xml = NULL;
virHostdevManagerPtr hostdev_mgr = driver->hostdevMgr;
xml = virNodeDeviceGetXMLDesc(dev, 0);
if (!xml)
goto cleanup;
def = virNodeDeviceDefParseString(xml, EXISTING_DEVICE, NULL);
if (!def)
goto cleanup;
if (virNodeDeviceResetEnsureACL(dev->conn, def) < 0)
goto cleanup;
if (qemuNodeDeviceGetPCIInfo(def, &domain, &bus, &slot, &function) < 0)
goto cleanup;
pci = virPCIDeviceNew(domain, bus, slot, function);
if (!pci)
goto cleanup;
ret = virHostdevPCINodeDeviceReset(hostdev_mgr, pci);
virPCIDeviceFree(pci);
cleanup:
virNodeDeviceDefFree(def);
VIR_FREE(xml);
return ret;
}
static int
qemuConnectCompareCPU(virConnectPtr conn,
const char *xmlDesc,
unsigned int flags)
{
virQEMUDriverPtr driver = conn->privateData;
int ret = VIR_CPU_COMPARE_ERROR;
virCapsPtr caps = NULL;
bool failIncompatible;
virCheckFlags(VIR_CONNECT_COMPARE_CPU_FAIL_INCOMPATIBLE,
VIR_CPU_COMPARE_ERROR);
if (virConnectCompareCPUEnsureACL(conn) < 0)
goto cleanup;
failIncompatible = !!(flags & VIR_CONNECT_COMPARE_CPU_FAIL_INCOMPATIBLE);
if (!(caps = virQEMUDriverGetCapabilities(driver, false)))
goto cleanup;
ret = virCPUCompareXML(caps->host.arch, caps->host.cpu,
xmlDesc, failIncompatible);
cleanup:
virObjectUnref(caps);
return ret;
}
static int
qemuConnectCompareHypervisorCPU(virConnectPtr conn,
const char *emulator,
const char *archStr,
const char *machine,
const char *virttypeStr,
const char *xmlCPU,
unsigned int flags)
{
int ret = VIR_CPU_COMPARE_ERROR;
virQEMUDriverPtr driver = conn->privateData;
virQEMUCapsPtr qemuCaps = NULL;
bool failIncompatible;
virCPUDefPtr hvCPU;
virArch arch;
virDomainVirtType virttype;
virCheckFlags(VIR_CONNECT_COMPARE_CPU_FAIL_INCOMPATIBLE,
VIR_CPU_COMPARE_ERROR);
if (virConnectCompareHypervisorCPUEnsureACL(conn) < 0)
goto cleanup;
failIncompatible = !!(flags & VIR_CONNECT_COMPARE_CPU_FAIL_INCOMPATIBLE);
qemuCaps = virQEMUCapsCacheLookupDefault(driver->qemuCapsCache,
emulator,
archStr,
virttypeStr,
machine,
&arch, &virttype, NULL);
if (!qemuCaps)
goto cleanup;
hvCPU = virQEMUCapsGetHostModel(qemuCaps, virttype,
VIR_QEMU_CAPS_HOST_CPU_REPORTED);
if (!hvCPU || hvCPU->fallback != VIR_CPU_FALLBACK_FORBID) {
virReportError(VIR_ERR_OPERATION_UNSUPPORTED,
_("QEMU '%s' does not support reporting CPU model for "
"virttype '%s'"),
virQEMUCapsGetBinary(qemuCaps),
virDomainVirtTypeToString(virttype));
goto cleanup;
}
if (ARCH_IS_X86(arch)) {
ret = virCPUCompareXML(arch, hvCPU, xmlCPU, failIncompatible);
} else {
virReportError(VIR_ERR_OPERATION_UNSUPPORTED,
_("comparing with the hypervisor CPU is not supported "
"for arch %s"), virArchToString(arch));
}
cleanup:
virObjectUnref(qemuCaps);
return ret;
}
static char *
qemuConnectBaselineCPU(virConnectPtr conn ATTRIBUTE_UNUSED,
const char **xmlCPUs,
unsigned int ncpus,
unsigned int flags)
{
virCPUDefPtr *cpus = NULL;
virCPUDefPtr baseline = NULL;
virCPUDefPtr cpu = NULL;
char *cpustr = NULL;
virCheckFlags(VIR_CONNECT_BASELINE_CPU_EXPAND_FEATURES |
VIR_CONNECT_BASELINE_CPU_MIGRATABLE, NULL);
if (virConnectBaselineCPUEnsureACL(conn) < 0)
goto cleanup;
if (!(cpus = virCPUDefListParse(xmlCPUs, ncpus, VIR_CPU_TYPE_HOST)))
goto cleanup;
if (!(baseline = virCPUBaseline(VIR_ARCH_NONE, cpus, ncpus, NULL, NULL,
!!(flags & VIR_CONNECT_BASELINE_CPU_MIGRATABLE))))
goto cleanup;
if (!(cpu = virCPUDefCopyWithoutModel(baseline)))
goto cleanup;
if (virCPUDefCopyModelFilter(cpu, baseline, false,
virQEMUCapsCPUFilterFeatures,
&cpus[0]->arch) < 0)
goto cleanup;
if ((flags & VIR_CONNECT_BASELINE_CPU_EXPAND_FEATURES) &&
virCPUExpandFeatures(cpus[0]->arch, cpu) < 0)
goto cleanup;
cpustr = virCPUDefFormat(cpu, NULL);
cleanup:
virCPUDefListFree(cpus);
virCPUDefFree(baseline);
virCPUDefFree(cpu);
return cpustr;
}
static char *
qemuConnectBaselineHypervisorCPU(virConnectPtr conn,
const char *emulator,
const char *archStr,
const char *machine,
const char *virttypeStr,
const char **xmlCPUs,
unsigned int ncpus,
unsigned int flags)
{
virQEMUDriverPtr driver = conn->privateData;
virCPUDefPtr *cpus = NULL;
virQEMUCapsPtr qemuCaps = NULL;
virArch arch;
virDomainVirtType virttype;
virDomainCapsCPUModelsPtr cpuModels;
bool migratable;
virCPUDefPtr cpu = NULL;
char *cpustr = NULL;
char **features = NULL;
virCheckFlags(VIR_CONNECT_BASELINE_CPU_EXPAND_FEATURES |
VIR_CONNECT_BASELINE_CPU_MIGRATABLE, NULL);
if (virConnectBaselineHypervisorCPUEnsureACL(conn) < 0)
goto cleanup;
migratable = !!(flags & VIR_CONNECT_BASELINE_CPU_MIGRATABLE);
if (!(cpus = virCPUDefListParse(xmlCPUs, ncpus, VIR_CPU_TYPE_AUTO)))
goto cleanup;
qemuCaps = virQEMUCapsCacheLookupDefault(driver->qemuCapsCache,
emulator,
archStr,
virttypeStr,
machine,
&arch, &virttype, NULL);
if (!qemuCaps)
goto cleanup;
if (!(cpuModels = virQEMUCapsGetCPUDefinitions(qemuCaps, virttype)) ||
cpuModels->nmodels == 0) {
virReportError(VIR_ERR_OPERATION_UNSUPPORTED,
_("QEMU '%s' does not support any CPU models for "
"virttype '%s'"),
virQEMUCapsGetBinary(qemuCaps),
virDomainVirtTypeToString(virttype));
goto cleanup;
}
if (ARCH_IS_X86(arch)) {
int rc = virQEMUCapsGetCPUFeatures(qemuCaps, virttype,
migratable, &features);
if (rc < 0)
goto cleanup;
if (features && rc == 0) {
/* We got only migratable features from QEMU if we asked for them,
* no further filtering in virCPUBaseline is desired. */
migratable = false;
}
if (!(cpu = virCPUBaseline(arch, cpus, ncpus, cpuModels,
(const char **)features, migratable)))
goto cleanup;
} else {
virReportError(VIR_ERR_OPERATION_UNSUPPORTED,
_("computing baseline hypervisor CPU is not supported "
"for arch %s"), virArchToString(arch));
goto cleanup;
}
cpu->fallback = VIR_CPU_FALLBACK_FORBID;
if ((flags & VIR_CONNECT_BASELINE_CPU_EXPAND_FEATURES) &&
virCPUExpandFeatures(arch, cpu) < 0)
goto cleanup;
cpustr = virCPUDefFormat(cpu, NULL);
cleanup:
virCPUDefListFree(cpus);
virCPUDefFree(cpu);
virObjectUnref(qemuCaps);
virStringListFree(features);
return cpustr;
}
static int
qemuDomainGetJobInfoMigrationStats(virQEMUDriverPtr driver,
virDomainObjPtr vm,
qemuDomainJobInfoPtr jobInfo)
{
qemuDomainObjPrivatePtr priv = vm->privateData;
bool events = virQEMUCapsGet(priv->qemuCaps, QEMU_CAPS_MIGRATION_EVENT);
if (jobInfo->status == QEMU_DOMAIN_JOB_STATUS_ACTIVE ||
jobInfo->status == QEMU_DOMAIN_JOB_STATUS_MIGRATING ||
jobInfo->status == QEMU_DOMAIN_JOB_STATUS_QEMU_COMPLETED ||
jobInfo->status == QEMU_DOMAIN_JOB_STATUS_POSTCOPY) {
if (events &&
jobInfo->status != QEMU_DOMAIN_JOB_STATUS_ACTIVE &&
qemuMigrationAnyFetchStats(driver, vm, QEMU_ASYNC_JOB_NONE,
jobInfo, NULL) < 0)
return -1;
if (jobInfo->status == QEMU_DOMAIN_JOB_STATUS_ACTIVE &&
jobInfo->statsType == QEMU_DOMAIN_JOB_STATS_TYPE_MIGRATION &&
qemuMigrationSrcFetchMirrorStats(driver, vm, QEMU_ASYNC_JOB_NONE,
jobInfo) < 0)
return -1;
if (qemuDomainJobInfoUpdateTime(jobInfo) < 0)
return -1;
}
return 0;
}
static int
qemuDomainGetJobInfoDumpStats(virQEMUDriverPtr driver,
virDomainObjPtr vm,
qemuDomainJobInfoPtr jobInfo)
{
qemuDomainObjPrivatePtr priv = vm->privateData;
qemuMonitorDumpStats stats = { 0 };
int rc;
if (qemuDomainObjEnterMonitorAsync(driver, vm, QEMU_ASYNC_JOB_NONE) < 0)
return -1;
rc = qemuMonitorQueryDump(priv->mon, &stats);
if (qemuDomainObjExitMonitor(driver, vm) < 0 || rc < 0)
return -1;
jobInfo->stats.dump = stats;
if (qemuDomainJobInfoUpdateTime(jobInfo) < 0)
return -1;
switch (jobInfo->stats.dump.status) {
case QEMU_MONITOR_DUMP_STATUS_NONE:
case QEMU_MONITOR_DUMP_STATUS_FAILED:
case QEMU_MONITOR_DUMP_STATUS_LAST:
virReportError(VIR_ERR_OPERATION_FAILED,
_("dump query failed, status=%d"),
jobInfo->stats.dump.status);
return -1;
break;
case QEMU_MONITOR_DUMP_STATUS_ACTIVE:
jobInfo->status = QEMU_DOMAIN_JOB_STATUS_ACTIVE;
VIR_DEBUG("dump active, bytes written='%llu' remaining='%llu'",
jobInfo->stats.dump.completed,
jobInfo->stats.dump.total -
jobInfo->stats.dump.completed);
break;
case QEMU_MONITOR_DUMP_STATUS_COMPLETED:
jobInfo->status = QEMU_DOMAIN_JOB_STATUS_COMPLETED;
VIR_DEBUG("dump completed, bytes written='%llu'",
jobInfo->stats.dump.completed);
break;
}
return 0;
}
static int
qemuDomainGetJobStatsInternal(virQEMUDriverPtr driver,
virDomainObjPtr vm,
bool completed,
qemuDomainJobInfoPtr jobInfo)
{
qemuDomainObjPrivatePtr priv = vm->privateData;
int ret = -1;
if (completed) {
if (priv->job.completed && !priv->job.current)
*jobInfo = *priv->job.completed;
else
jobInfo->status = QEMU_DOMAIN_JOB_STATUS_NONE;
return 0;
}
if (priv->job.asyncJob == QEMU_ASYNC_JOB_MIGRATION_IN) {
virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s",
_("migration statistics are available only on "
"the source host"));
return -1;
}
if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_QUERY) < 0)
return -1;
if (virDomainObjCheckActive(vm) < 0)
goto cleanup;
if (!priv->job.current) {
jobInfo->status = QEMU_DOMAIN_JOB_STATUS_NONE;
ret = 0;
goto cleanup;
}
*jobInfo = *priv->job.current;
switch (jobInfo->statsType) {
case QEMU_DOMAIN_JOB_STATS_TYPE_MIGRATION:
case QEMU_DOMAIN_JOB_STATS_TYPE_SAVEDUMP:
if (qemuDomainGetJobInfoMigrationStats(driver, vm, jobInfo) < 0)
goto cleanup;
break;
case QEMU_DOMAIN_JOB_STATS_TYPE_MEMDUMP:
if (qemuDomainGetJobInfoDumpStats(driver, vm, jobInfo) < 0)
goto cleanup;
break;
case QEMU_DOMAIN_JOB_STATS_TYPE_NONE:
break;
}
ret = 0;
cleanup:
qemuDomainObjEndJob(driver, vm);
return ret;
}
static int
qemuDomainGetJobInfo(virDomainPtr dom,
virDomainJobInfoPtr info)
{
virQEMUDriverPtr driver = dom->conn->privateData;
qemuDomainJobInfo jobInfo;
virDomainObjPtr vm;
int ret = -1;
if (!(vm = qemuDomObjFromDomain(dom)))
goto cleanup;
if (virDomainGetJobInfoEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
if (qemuDomainGetJobStatsInternal(driver, vm, false, &jobInfo) < 0)
goto cleanup;
if (jobInfo.status == QEMU_DOMAIN_JOB_STATUS_NONE) {
memset(info, 0, sizeof(*info));
info->type = VIR_DOMAIN_JOB_NONE;
ret = 0;
goto cleanup;
}
ret = qemuDomainJobInfoToInfo(&jobInfo, info);
cleanup:
virDomainObjEndAPI(&vm);
return ret;
}
static int
qemuDomainGetJobStats(virDomainPtr dom,
int *type,
virTypedParameterPtr *params,
int *nparams,
unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
virDomainObjPtr vm;
qemuDomainObjPrivatePtr priv;
qemuDomainJobInfo jobInfo;
bool completed = !!(flags & VIR_DOMAIN_JOB_STATS_COMPLETED);
int ret = -1;
virCheckFlags(VIR_DOMAIN_JOB_STATS_COMPLETED, -1);
if (!(vm = qemuDomObjFromDomain(dom)))
goto cleanup;
if (virDomainGetJobStatsEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
priv = vm->privateData;
if (qemuDomainGetJobStatsInternal(driver, vm, completed, &jobInfo) < 0)
goto cleanup;
if (jobInfo.status == QEMU_DOMAIN_JOB_STATUS_NONE) {
*type = VIR_DOMAIN_JOB_NONE;
*params = NULL;
*nparams = 0;
ret = 0;
goto cleanup;
}
ret = qemuDomainJobInfoToParams(&jobInfo, type, params, nparams);
if (completed && ret == 0)
VIR_FREE(priv->job.completed);
cleanup:
virDomainObjEndAPI(&vm);
return ret;
}
static int qemuDomainAbortJob(virDomainPtr dom)
{
virQEMUDriverPtr driver = dom->conn->privateData;
virDomainObjPtr vm;
int ret = -1;
qemuDomainObjPrivatePtr priv;
int reason;
if (!(vm = qemuDomObjFromDomain(dom)))
goto cleanup;
if (virDomainAbortJobEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_ABORT) < 0)
goto cleanup;
if (virDomainObjCheckActive(vm) < 0)
goto endjob;
priv = vm->privateData;
if (!priv->job.asyncJob) {
virReportError(VIR_ERR_OPERATION_INVALID,
"%s", _("no job is active on the domain"));
goto endjob;
}
if (priv->job.asyncJob == QEMU_ASYNC_JOB_MIGRATION_IN) {
virReportError(VIR_ERR_OPERATION_INVALID, "%s",
_("cannot abort incoming migration;"
" use virDomainDestroy instead"));
goto endjob;
}
if (priv->job.asyncJob == QEMU_ASYNC_JOB_DUMP &&
priv->job.apiFlags & VIR_DUMP_MEMORY_ONLY) {
virReportError(VIR_ERR_OPERATION_INVALID, "%s",
_("cannot abort memory-only dump"));
goto endjob;
}
if (priv->job.asyncJob == QEMU_ASYNC_JOB_MIGRATION_OUT &&
(priv->job.current->status == QEMU_DOMAIN_JOB_STATUS_POSTCOPY ||
(virDomainObjGetState(vm, &reason) == VIR_DOMAIN_PAUSED &&
reason == VIR_DOMAIN_PAUSED_POSTCOPY))) {
virReportError(VIR_ERR_OPERATION_INVALID, "%s",
_("cannot abort migration in post-copy mode"));
goto endjob;
}
VIR_DEBUG("Cancelling job at client request");
qemuDomainObjAbortAsyncJob(vm);
qemuDomainObjEnterMonitor(driver, vm);
ret = qemuMonitorMigrateCancel(priv->mon);
if (qemuDomainObjExitMonitor(driver, vm) < 0)
ret = -1;
endjob:
qemuDomainObjEndJob(driver, vm);
cleanup:
virDomainObjEndAPI(&vm);
return ret;
}
static int
qemuDomainMigrateSetMaxDowntime(virDomainPtr dom,
unsigned long long downtime,
unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
virDomainObjPtr vm;
qemuDomainObjPrivatePtr priv;
int ret = -1;
virCheckFlags(0, -1);
if (!(vm = qemuDomObjFromDomain(dom)))
goto cleanup;
if (virDomainMigrateSetMaxDowntimeEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_MIGRATION_OP) < 0)
goto cleanup;
if (virDomainObjCheckActive(vm) < 0)
goto endjob;
priv = vm->privateData;
VIR_DEBUG("Setting migration downtime to %llums", downtime);
qemuDomainObjEnterMonitor(driver, vm);
ret = qemuMonitorSetMigrationDowntime(priv->mon, downtime);
if (qemuDomainObjExitMonitor(driver, vm) < 0)
ret = -1;
endjob:
qemuDomainObjEndJob(driver, vm);
cleanup:
virDomainObjEndAPI(&vm);
return ret;
}
static int
qemuDomainMigrateGetMaxDowntime(virDomainPtr dom,
unsigned long long *downtime,
unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
virDomainObjPtr vm;
qemuMigrationParamsPtr migParams = NULL;
int ret = -1;
int rc;
virCheckFlags(0, -1);
if (!(vm = qemuDomObjFromDomain(dom)))
return -1;
if (virDomainMigrateGetMaxDowntimeEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_QUERY) < 0)
goto cleanup;
if (virDomainObjCheckActive(vm) < 0)
goto endjob;
if (qemuMigrationParamsFetch(driver, vm, QEMU_ASYNC_JOB_NONE,
&migParams) < 0)
goto endjob;
if ((rc = qemuMigrationParamsGetULL(migParams,
QEMU_MIGRATION_PARAM_DOWNTIME_LIMIT,
downtime)) < 0) {
goto endjob;
}
if (rc == 1) {
virReportError(VIR_ERR_OPERATION_INVALID, "%s",
_("Querying migration downtime is not supported by "
"QEMU binary"));
goto endjob;
}
ret = 0;
endjob:
qemuDomainObjEndJob(driver, vm);
cleanup:
qemuMigrationParamsFree(migParams);
virDomainObjEndAPI(&vm);
return ret;
}
static int
qemuDomainMigrateGetCompressionCache(virDomainPtr dom,
unsigned long long *cacheSize,
unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
virDomainObjPtr vm;
qemuDomainObjPrivatePtr priv;
int ret = -1;
virCheckFlags(0, -1);
if (!(vm = qemuDomObjFromDomain(dom)))
goto cleanup;
if (virDomainMigrateGetCompressionCacheEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_QUERY) < 0)
goto cleanup;
if (virDomainObjCheckActive(vm) < 0)
goto endjob;
priv = vm->privateData;
if (!qemuMigrationCapsGet(vm, QEMU_MIGRATION_CAP_XBZRLE)) {
virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s",
_("Compressed migration is not supported by "
"QEMU binary"));
goto endjob;
}
qemuDomainObjEnterMonitor(driver, vm);
ret = qemuMonitorGetMigrationCacheSize(priv->mon, cacheSize);
if (qemuDomainObjExitMonitor(driver, vm) < 0)
ret = -1;
endjob:
qemuDomainObjEndJob(driver, vm);
cleanup:
virDomainObjEndAPI(&vm);
return ret;
}
static int
qemuDomainMigrateSetCompressionCache(virDomainPtr dom,
unsigned long long cacheSize,
unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
virDomainObjPtr vm;
qemuDomainObjPrivatePtr priv;
int ret = -1;
virCheckFlags(0, -1);
if (!(vm = qemuDomObjFromDomain(dom)))
goto cleanup;
if (virDomainMigrateSetCompressionCacheEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_MIGRATION_OP) < 0)
goto cleanup;
if (virDomainObjCheckActive(vm) < 0)
goto endjob;
priv = vm->privateData;
if (!qemuMigrationCapsGet(vm, QEMU_MIGRATION_CAP_XBZRLE)) {
virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s",
_("Compressed migration is not supported by "
"QEMU binary"));
goto endjob;
}
qemuDomainObjEnterMonitor(driver, vm);
VIR_DEBUG("Setting compression cache to %llu B", cacheSize);
ret = qemuMonitorSetMigrationCacheSize(priv->mon, cacheSize);
if (qemuDomainObjExitMonitor(driver, vm) < 0)
ret = -1;
endjob:
qemuDomainObjEndJob(driver, vm);
cleanup:
virDomainObjEndAPI(&vm);
return ret;
}
static int
qemuDomainMigrateSetMaxSpeed(virDomainPtr dom,
unsigned long bandwidth,
unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
virDomainObjPtr vm;
qemuDomainObjPrivatePtr priv;
int ret = -1;
virCheckFlags(0, -1);
if (!(vm = qemuDomObjFromDomain(dom)))
goto cleanup;
priv = vm->privateData;
if (virDomainMigrateSetMaxSpeedEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
if (bandwidth > QEMU_DOMAIN_MIG_BANDWIDTH_MAX) {
virReportError(VIR_ERR_OVERFLOW,
_("bandwidth must be less than %llu"),
QEMU_DOMAIN_MIG_BANDWIDTH_MAX + 1ULL);
goto cleanup;
}
if (virDomainObjIsActive(vm)) {
if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_MIGRATION_OP) < 0)
goto cleanup;
if (virDomainObjCheckActive(vm) < 0)
goto endjob;
VIR_DEBUG("Setting migration bandwidth to %luMbs", bandwidth);
qemuDomainObjEnterMonitor(driver, vm);
ret = qemuMonitorSetMigrationSpeed(priv->mon, bandwidth);
if (qemuDomainObjExitMonitor(driver, vm) < 0)
ret = -1;
if (ret == 0)
priv->migMaxBandwidth = bandwidth;
endjob:
qemuDomainObjEndJob(driver, vm);
} else {
priv->migMaxBandwidth = bandwidth;
ret = 0;
}
cleanup:
virDomainObjEndAPI(&vm);
return ret;
}
static int
qemuDomainMigrateGetMaxSpeed(virDomainPtr dom,
unsigned long *bandwidth,
unsigned int flags)
{
virDomainObjPtr vm;
qemuDomainObjPrivatePtr priv;
int ret = -1;
virCheckFlags(0, -1);
if (!(vm = qemuDomObjFromDomain(dom)))
goto cleanup;
priv = vm->privateData;
if (virDomainMigrateGetMaxSpeedEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
*bandwidth = priv->migMaxBandwidth;
ret = 0;
cleanup:
virDomainObjEndAPI(&vm);
return ret;
}
static int
qemuDomainMigrateStartPostCopy(virDomainPtr dom,
unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
virDomainObjPtr vm;
qemuDomainObjPrivatePtr priv;
int ret = -1;
virCheckFlags(0, -1);
if (!(vm = qemuDomObjFromDomain(dom)))
goto cleanup;
if (virDomainMigrateStartPostCopyEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_MIGRATION_OP) < 0)
goto cleanup;
if (virDomainObjCheckActive(vm) < 0)
goto endjob;
priv = vm->privateData;
if (priv->job.asyncJob != QEMU_ASYNC_JOB_MIGRATION_OUT) {
virReportError(VIR_ERR_OPERATION_INVALID, "%s",
_("post-copy can only be started while "
"outgoing migration is in progress"));
goto endjob;
}
if (!(priv->job.apiFlags & VIR_MIGRATE_POSTCOPY)) {
virReportError(VIR_ERR_OPERATION_INVALID, "%s",
_("switching to post-copy requires migration to be "
"started with VIR_MIGRATE_POSTCOPY flag"));
goto endjob;
}
VIR_DEBUG("Starting post-copy");
qemuDomainObjEnterMonitor(driver, vm);
ret = qemuMonitorMigrateStartPostCopy(priv->mon);
if (qemuDomainObjExitMonitor(driver, vm) < 0)
ret = -1;
endjob:
qemuDomainObjEndJob(driver, vm);
cleanup:
virDomainObjEndAPI(&vm);
return ret;
}
/* Return -1 if request is not sent to agent due to misconfig, -2 if request
* is sent but failed, and number of frozen filesystems on success. If -2 is
* returned, FSThaw should be called revert the quiesced status. */
static int
qemuDomainSnapshotFSFreeze(virQEMUDriverPtr driver ATTRIBUTE_UNUSED,
virDomainObjPtr vm,
const char **mountpoints,
unsigned int nmountpoints)
{
qemuAgentPtr agent;
int frozen;
if (!qemuDomainAgentAvailable(vm, true))
return -1;
agent = qemuDomainObjEnterAgent(vm);
frozen = qemuAgentFSFreeze(agent, mountpoints, nmountpoints);
qemuDomainObjExitAgent(vm, agent);
return frozen < 0 ? -2 : frozen;
}
/* Return -1 on error, otherwise number of thawed filesystems. */
static int
qemuDomainSnapshotFSThaw(virQEMUDriverPtr driver ATTRIBUTE_UNUSED,
virDomainObjPtr vm,
bool report)
{
qemuAgentPtr agent;
int thawed;
virErrorPtr err = NULL;
if (!qemuDomainAgentAvailable(vm, report))
return -1;
agent = qemuDomainObjEnterAgent(vm);
if (!report)
err = virSaveLastError();
thawed = qemuAgentFSThaw(agent);
if (!report)
virSetError(err);
qemuDomainObjExitAgent(vm, agent);
virFreeError(err);
return thawed;
}
/* The domain is expected to be locked and inactive. */
static int
qemuDomainSnapshotCreateInactiveInternal(virQEMUDriverPtr driver,
virDomainObjPtr vm,
virDomainSnapshotObjPtr snap)
{
return qemuDomainSnapshotForEachQcow2(driver, vm, snap, "-c", false);
}
/* The domain is expected to be locked and inactive. */
static int
qemuDomainSnapshotCreateInactiveExternal(virQEMUDriverPtr driver,
virDomainObjPtr vm,
virDomainSnapshotObjPtr snap,
bool reuse)
{
size_t i;
virDomainSnapshotDiskDefPtr snapdisk;
virDomainDiskDefPtr defdisk;
virCommandPtr cmd = NULL;
const char *qemuImgPath;
virBitmapPtr created = NULL;
virQEMUDriverConfigPtr cfg = virQEMUDriverGetConfig(driver);
int ret = -1;
if (!(qemuImgPath = qemuFindQemuImgBinary(driver)))
goto cleanup;
if (!(created = virBitmapNew(snap->def->ndisks)))
goto cleanup;
/* If reuse is true, then qemuDomainSnapshotPrepare already
* ensured that the new files exist, and it was up to the user to
* create them correctly. */
for (i = 0; i < snap->def->ndisks && !reuse; i++) {
snapdisk = &(snap->def->disks[i]);
defdisk = snap->def->dom->disks[snapdisk->idx];
if (snapdisk->snapshot != VIR_DOMAIN_SNAPSHOT_LOCATION_EXTERNAL)
continue;
if (!snapdisk->src->format)
snapdisk->src->format = VIR_STORAGE_FILE_QCOW2;
/* creates cmd line args: qemu-img create -f qcow2 -o */
if (!(cmd = virCommandNewArgList(qemuImgPath,
"create",
"-f",
virStorageFileFormatTypeToString(snapdisk->src->format),
"-o",
NULL)))
goto cleanup;
/* adds cmd line arg: backing_file=/path/to/backing/file,backing_fmd=format */
virCommandAddArgFormat(cmd, "backing_file=%s,backing_fmt=%s",
defdisk->src->path,
virStorageFileFormatTypeToString(defdisk->src->format));
/* adds cmd line args: /path/to/target/file */
virCommandAddArg(cmd, snapdisk->src->path);
/* If the target does not exist, we're going to create it possibly */
if (!virFileExists(snapdisk->src->path))
ignore_value(virBitmapSetBit(created, i));
if (virCommandRun(cmd, NULL) < 0)
goto cleanup;
virCommandFree(cmd);
cmd = NULL;
}
/* update disk definitions */
for (i = 0; i < snap->def->ndisks; i++) {
snapdisk = &(snap->def->disks[i]);
defdisk = vm->def->disks[snapdisk->idx];
if (snapdisk->snapshot == VIR_DOMAIN_SNAPSHOT_LOCATION_EXTERNAL) {
VIR_FREE(defdisk->src->path);
if (VIR_STRDUP(defdisk->src->path, snapdisk->src->path) < 0) {
/* we cannot rollback here in a sane way */
goto cleanup;
}
defdisk->src->format = snapdisk->src->format;
if (virDomainSaveConfig(cfg->configDir, driver->caps, vm->def) < 0)
goto cleanup;
}
}
ret = 0;
cleanup:
virCommandFree(cmd);
/* unlink images if creation has failed */
if (ret < 0 && created) {
ssize_t bit = -1;
while ((bit = virBitmapNextSetBit(created, bit)) >= 0) {
snapdisk = &(snap->def->disks[bit]);
if (unlink(snapdisk->src->path) < 0)
VIR_WARN("Failed to remove snapshot image '%s'",
snapdisk->src->path);
}
}
virBitmapFree(created);
virObjectUnref(cfg);
return ret;
}
/* The domain is expected to be locked and active. */
static int
qemuDomainSnapshotCreateActiveInternal(virQEMUDriverPtr driver,
virDomainObjPtr vm,
virDomainSnapshotObjPtr snap,
unsigned int flags)
{
qemuDomainObjPrivatePtr priv = vm->privateData;
virObjectEventPtr event = NULL;
bool resume = false;
int ret = -1;
if (!qemuMigrationSrcIsAllowed(driver, vm, false, 0))
goto cleanup;
if (virDomainObjGetState(vm, NULL) == VIR_DOMAIN_RUNNING) {
/* savevm monitor command pauses the domain emitting an event which
* confuses libvirt since it's not notified when qemu resumes the
* domain. Thus we stop and start CPUs ourselves.
*/
if (qemuProcessStopCPUs(driver, vm, VIR_DOMAIN_PAUSED_SAVE,
QEMU_ASYNC_JOB_SNAPSHOT) < 0)
goto cleanup;
resume = true;
if (!virDomainObjIsActive(vm)) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("guest unexpectedly quit"));
goto cleanup;
}
}
if (qemuDomainObjEnterMonitorAsync(driver, vm,
QEMU_ASYNC_JOB_SNAPSHOT) < 0) {
resume = false;
goto cleanup;
}
ret = qemuMonitorCreateSnapshot(priv->mon, snap->def->name);
if (qemuDomainObjExitMonitor(driver, vm) < 0)
ret = -1;
if (ret < 0)
goto cleanup;
if (!(snap->def->cookie = (virObjectPtr) qemuDomainSaveCookieNew(vm)))
goto cleanup;
if (flags & VIR_DOMAIN_SNAPSHOT_CREATE_HALT) {
event = virDomainEventLifecycleNewFromObj(vm, VIR_DOMAIN_EVENT_STOPPED,
VIR_DOMAIN_EVENT_STOPPED_FROM_SNAPSHOT);
qemuProcessStop(driver, vm, VIR_DOMAIN_SHUTOFF_FROM_SNAPSHOT,
QEMU_ASYNC_JOB_SNAPSHOT, 0);
virDomainAuditStop(vm, "from-snapshot");
resume = false;
}
cleanup:
if (resume && virDomainObjIsActive(vm) &&
qemuProcessStartCPUs(driver, vm,
VIR_DOMAIN_RUNNING_UNPAUSED,
QEMU_ASYNC_JOB_SNAPSHOT) < 0) {
event = virDomainEventLifecycleNewFromObj(vm,
VIR_DOMAIN_EVENT_SUSPENDED,
VIR_DOMAIN_EVENT_SUSPENDED_API_ERROR);
if (virGetLastErrorCode() == VIR_ERR_OK) {
virReportError(VIR_ERR_OPERATION_FAILED, "%s",
_("resuming after snapshot failed"));
}
}
virObjectEventStateQueue(driver->domainEventState, event);
return ret;
}
static int
qemuDomainSnapshotPrepareDiskShared(virDomainSnapshotDiskDefPtr snapdisk,
virDomainDiskDefPtr domdisk)
{
if (!domdisk->src->shared || domdisk->src->readonly)
return 0;
if (!qemuBlockStorageSourceSupportsConcurrentAccess(snapdisk->src)) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("shared access for disk '%s' requires use of "
"supported storage format"), domdisk->dst);
return -1;
}
return 0;
}
static int
qemuDomainSnapshotPrepareDiskExternalInactive(virDomainSnapshotDiskDefPtr snapdisk,
virDomainDiskDefPtr domdisk)
{
int domDiskType = virStorageSourceGetActualType(domdisk->src);
int snapDiskType = virStorageSourceGetActualType(snapdisk->src);
switch ((virStorageType)domDiskType) {
case VIR_STORAGE_TYPE_BLOCK:
case VIR_STORAGE_TYPE_FILE:
break;
case VIR_STORAGE_TYPE_NETWORK:
switch ((virStorageNetProtocol) domdisk->src->protocol) {
case VIR_STORAGE_NET_PROTOCOL_NONE:
case VIR_STORAGE_NET_PROTOCOL_NBD:
case VIR_STORAGE_NET_PROTOCOL_RBD:
case VIR_STORAGE_NET_PROTOCOL_SHEEPDOG:
case VIR_STORAGE_NET_PROTOCOL_GLUSTER:
case VIR_STORAGE_NET_PROTOCOL_ISCSI:
case VIR_STORAGE_NET_PROTOCOL_HTTP:
case VIR_STORAGE_NET_PROTOCOL_HTTPS:
case VIR_STORAGE_NET_PROTOCOL_FTP:
case VIR_STORAGE_NET_PROTOCOL_FTPS:
case VIR_STORAGE_NET_PROTOCOL_TFTP:
case VIR_STORAGE_NET_PROTOCOL_SSH:
case VIR_STORAGE_NET_PROTOCOL_VXHS:
case VIR_STORAGE_NET_PROTOCOL_LAST:
virReportError(VIR_ERR_INTERNAL_ERROR,
_("external inactive snapshots are not supported on "
"'network' disks using '%s' protocol"),
virStorageNetProtocolTypeToString(domdisk->src->protocol));
return -1;
}
break;
case VIR_STORAGE_TYPE_DIR:
case VIR_STORAGE_TYPE_VOLUME:
case VIR_STORAGE_TYPE_NONE:
case VIR_STORAGE_TYPE_LAST:
virReportError(VIR_ERR_INTERNAL_ERROR,
_("external inactive snapshots are not supported on "
"'%s' disks"), virStorageTypeToString(domDiskType));
return -1;
}
switch ((virStorageType)snapDiskType) {
case VIR_STORAGE_TYPE_BLOCK:
case VIR_STORAGE_TYPE_FILE:
break;
case VIR_STORAGE_TYPE_NETWORK:
case VIR_STORAGE_TYPE_DIR:
case VIR_STORAGE_TYPE_VOLUME:
case VIR_STORAGE_TYPE_NONE:
case VIR_STORAGE_TYPE_LAST:
virReportError(VIR_ERR_INTERNAL_ERROR,
_("external inactive snapshots are not supported on "
"'%s' disks"), virStorageTypeToString(snapDiskType));
return -1;
}
if (qemuDomainSnapshotPrepareDiskShared(snapdisk, domdisk) < 0)
return -1;
return 0;
}
static int
qemuDomainSnapshotPrepareDiskExternalActive(virDomainSnapshotDiskDefPtr snapdisk,
virDomainDiskDefPtr domdisk)
{
int actualType = virStorageSourceGetActualType(snapdisk->src);
if (domdisk->device == VIR_DOMAIN_DISK_DEVICE_LUN) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("external active snapshots are not supported on scsi "
"passthrough devices"));
return -1;
}
switch ((virStorageType)actualType) {
case VIR_STORAGE_TYPE_BLOCK:
case VIR_STORAGE_TYPE_FILE:
break;
case VIR_STORAGE_TYPE_NETWORK:
switch ((virStorageNetProtocol) snapdisk->src->protocol) {
case VIR_STORAGE_NET_PROTOCOL_GLUSTER:
break;
case VIR_STORAGE_NET_PROTOCOL_NONE:
case VIR_STORAGE_NET_PROTOCOL_NBD:
case VIR_STORAGE_NET_PROTOCOL_RBD:
case VIR_STORAGE_NET_PROTOCOL_SHEEPDOG:
case VIR_STORAGE_NET_PROTOCOL_ISCSI:
case VIR_STORAGE_NET_PROTOCOL_HTTP:
case VIR_STORAGE_NET_PROTOCOL_HTTPS:
case VIR_STORAGE_NET_PROTOCOL_FTP:
case VIR_STORAGE_NET_PROTOCOL_FTPS:
case VIR_STORAGE_NET_PROTOCOL_TFTP:
case VIR_STORAGE_NET_PROTOCOL_SSH:
case VIR_STORAGE_NET_PROTOCOL_VXHS:
case VIR_STORAGE_NET_PROTOCOL_LAST:
virReportError(VIR_ERR_INTERNAL_ERROR,
_("external active snapshots are not supported on "
"'network' disks using '%s' protocol"),
virStorageNetProtocolTypeToString(snapdisk->src->protocol));
return -1;
}
break;
case VIR_STORAGE_TYPE_DIR:
case VIR_STORAGE_TYPE_VOLUME:
case VIR_STORAGE_TYPE_NONE:
case VIR_STORAGE_TYPE_LAST:
virReportError(VIR_ERR_INTERNAL_ERROR,
_("external active snapshots are not supported on "
"'%s' disks"), virStorageTypeToString(actualType));
return -1;
}
if (qemuDomainSnapshotPrepareDiskShared(snapdisk, domdisk) < 0)
return -1;
return 0;
}
static int
qemuDomainSnapshotPrepareDiskExternal(virDomainDiskDefPtr disk,
virDomainSnapshotDiskDefPtr snapdisk,
bool active,
bool reuse)
{
int ret = -1;
struct stat st;
if (disk->src->readonly) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("external snapshot for readonly disk %s "
"is not supported"), disk->dst);
return -1;
}
if (qemuTranslateSnapshotDiskSourcePool(snapdisk) < 0)
return -1;
if (!active) {
if (virDomainDiskTranslateSourcePool(disk) < 0)
return -1;
if (qemuDomainSnapshotPrepareDiskExternalInactive(snapdisk, disk) < 0)
return -1;
} else {
if (qemuDomainSnapshotPrepareDiskExternalActive(snapdisk, disk) < 0)
return -1;
}
if (virStorageFileInit(snapdisk->src) < 0)
return -1;
if (virStorageFileStat(snapdisk->src, &st) < 0) {
if (errno != ENOENT) {
virReportSystemError(errno,
_("unable to stat for disk %s: %s"),
snapdisk->name, snapdisk->src->path);
goto cleanup;
} else if (reuse) {
virReportSystemError(errno,
_("missing existing file for disk %s: %s"),
snapdisk->name, snapdisk->src->path);
goto cleanup;
}
} else if (!S_ISBLK(st.st_mode) && st.st_size && !reuse) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("external snapshot file for disk %s already "
"exists and is not a block device: %s"),
snapdisk->name, snapdisk->src->path);
goto cleanup;
}
ret = 0;
cleanup:
virStorageFileDeinit(snapdisk->src);
return ret;
}
static int
qemuDomainSnapshotPrepareDiskInternal(virDomainDiskDefPtr disk,
bool active)
{
int actualType;
/* active disks are handled by qemu itself so no need to worry about those */
if (active)
return 0;
if (virDomainDiskTranslateSourcePool(disk) < 0)
return -1;
actualType = virStorageSourceGetActualType(disk->src);
switch ((virStorageType)actualType) {
case VIR_STORAGE_TYPE_BLOCK:
case VIR_STORAGE_TYPE_FILE:
return 0;
case VIR_STORAGE_TYPE_NETWORK:
switch ((virStorageNetProtocol) disk->src->protocol) {
case VIR_STORAGE_NET_PROTOCOL_NONE:
case VIR_STORAGE_NET_PROTOCOL_NBD:
case VIR_STORAGE_NET_PROTOCOL_RBD:
case VIR_STORAGE_NET_PROTOCOL_SHEEPDOG:
case VIR_STORAGE_NET_PROTOCOL_GLUSTER:
case VIR_STORAGE_NET_PROTOCOL_ISCSI:
case VIR_STORAGE_NET_PROTOCOL_HTTP:
case VIR_STORAGE_NET_PROTOCOL_HTTPS:
case VIR_STORAGE_NET_PROTOCOL_FTP:
case VIR_STORAGE_NET_PROTOCOL_FTPS:
case VIR_STORAGE_NET_PROTOCOL_TFTP:
case VIR_STORAGE_NET_PROTOCOL_SSH:
case VIR_STORAGE_NET_PROTOCOL_VXHS:
case VIR_STORAGE_NET_PROTOCOL_LAST:
virReportError(VIR_ERR_INTERNAL_ERROR,
_("internal inactive snapshots are not supported on "
"'network' disks using '%s' protocol"),
virStorageNetProtocolTypeToString(disk->src->protocol));
return -1;
}
break;
case VIR_STORAGE_TYPE_DIR:
case VIR_STORAGE_TYPE_VOLUME:
case VIR_STORAGE_TYPE_NONE:
case VIR_STORAGE_TYPE_LAST:
virReportError(VIR_ERR_INTERNAL_ERROR,
_("internal inactive snapshots are not supported on "
"'%s' disks"), virStorageTypeToString(actualType));
return -1;
}
return 0;
}
static int
qemuDomainSnapshotPrepare(virDomainObjPtr vm,
virDomainSnapshotDefPtr def,
unsigned int *flags)
{
int ret = -1;
size_t i;
bool active = virDomainObjIsActive(vm);
bool reuse = (*flags & VIR_DOMAIN_SNAPSHOT_CREATE_REUSE_EXT) != 0;
bool found_internal = false;
bool forbid_internal = false;
int external = 0;
for (i = 0; i < def->ndisks; i++) {
virDomainSnapshotDiskDefPtr disk = &def->disks[i];
virDomainDiskDefPtr dom_disk = vm->def->disks[i];
if (disk->snapshot != VIR_DOMAIN_SNAPSHOT_LOCATION_NONE &&
qemuDomainDiskBlockJobIsActive(dom_disk))
goto cleanup;
switch ((virDomainSnapshotLocation) disk->snapshot) {
case VIR_DOMAIN_SNAPSHOT_LOCATION_INTERNAL:
found_internal = true;
if (def->state == VIR_DOMAIN_DISK_SNAPSHOT && active) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("active qemu domains require external disk "
"snapshots; disk %s requested internal"),
disk->name);
goto cleanup;
}
if (qemuDomainSnapshotPrepareDiskInternal(dom_disk,
active) < 0)
goto cleanup;
if (vm->def->disks[i]->src->format > 0 &&
vm->def->disks[i]->src->format != VIR_STORAGE_FILE_QCOW2) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("internal snapshot for disk %s unsupported "
"for storage type %s"),
disk->name,
virStorageFileFormatTypeToString(
vm->def->disks[i]->src->format));
goto cleanup;
}
break;
case VIR_DOMAIN_SNAPSHOT_LOCATION_EXTERNAL:
if (!disk->src->format) {
disk->src->format = VIR_STORAGE_FILE_QCOW2;
} else if (disk->src->format != VIR_STORAGE_FILE_QCOW2 &&
disk->src->format != VIR_STORAGE_FILE_QED) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("external snapshot format for disk %s "
"is unsupported: %s"),
disk->name,
virStorageFileFormatTypeToString(disk->src->format));
goto cleanup;
}
if (qemuDomainSnapshotPrepareDiskExternal(dom_disk, disk,
active, reuse) < 0)
goto cleanup;
external++;
break;
case VIR_DOMAIN_SNAPSHOT_LOCATION_NONE:
/* Remember seeing a disk that has snapshot disabled */
if (!virStorageSourceIsEmpty(dom_disk->src) &&
!dom_disk->src->readonly)
forbid_internal = true;
break;
case VIR_DOMAIN_SNAPSHOT_LOCATION_DEFAULT:
case VIR_DOMAIN_SNAPSHOT_LOCATION_LAST:
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("unexpected code path"));
goto cleanup;
}
}
if (!found_internal && !external &&
def->memory == VIR_DOMAIN_SNAPSHOT_LOCATION_NONE) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("nothing selected for snapshot"));
goto cleanup;
}
/* internal snapshot requires a disk image to store the memory image to, and
* also disks can't be excluded from an internal snapshot*/
if ((def->memory == VIR_DOMAIN_SNAPSHOT_LOCATION_INTERNAL && !found_internal) ||
(found_internal && forbid_internal)) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("internal snapshots and checkpoints require all "
"disks to be selected for snapshot"));
goto cleanup;
}
/* disk snapshot requires at least one disk */
if (def->state == VIR_DOMAIN_DISK_SNAPSHOT && !external) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("disk-only snapshots require at least "
"one disk to be selected for snapshot"));
goto cleanup;
}
/* For now, we don't allow mixing internal and external disks.
* XXX technically, we could mix internal and external disks for
* offline snapshots */
if ((found_internal && external) ||
(def->memory == VIR_DOMAIN_SNAPSHOT_LOCATION_INTERNAL && external) ||
(def->memory == VIR_DOMAIN_SNAPSHOT_LOCATION_EXTERNAL && found_internal)) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("mixing internal and external targets for a snapshot "
"is not yet supported"));
goto cleanup;
}
/* internal snapshots + pflash based loader have the following problems:
* - if the variable store is raw, the snapshot fails
* - allowing a qcow2 image as the varstore would make it eligible to receive
* the vmstate dump, which would make it huge
* - offline snapshot would not snapshot the varstore at all
*
* Avoid the issues by forbidding internal snapshot with pflash completely.
*/
if (found_internal &&
vm->def->os.loader &&
vm->def->os.loader->type == VIR_DOMAIN_LOADER_TYPE_PFLASH) {
virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s",
_("internal snapshots of a VM with pflash based "
"firmware are not supported"));
goto cleanup;
}
/* Alter flags to let later users know what we learned. */
if (external && !active)
*flags |= VIR_DOMAIN_SNAPSHOT_CREATE_DISK_ONLY;
ret = 0;
cleanup:
return ret;
}
struct _qemuDomainSnapshotDiskData {
virStorageSourcePtr src;
bool initialized; /* @src was initialized in the storage driver */
bool created; /* @src was created by the snapshot code */
bool prepared; /* @src was prepared using qemuDomainDiskChainElementPrepare */
virDomainDiskDefPtr disk;
char *relPath; /* relative path component to fill into original disk */
virStorageSourcePtr persistsrc;
virDomainDiskDefPtr persistdisk;
};
typedef struct _qemuDomainSnapshotDiskData qemuDomainSnapshotDiskData;
typedef qemuDomainSnapshotDiskData *qemuDomainSnapshotDiskDataPtr;
static void
qemuDomainSnapshotDiskDataFree(qemuDomainSnapshotDiskDataPtr data,
size_t ndata,
virQEMUDriverPtr driver,
virDomainObjPtr vm)
{
size_t i;
if (!data)
return;
for (i = 0; i < ndata; i++) {
/* on success of the snapshot the 'src' and 'persistsrc' properties will
* be set to NULL by qemuDomainSnapshotUpdateDiskSources */
if (data[i].src) {
if (data[i].initialized)
virStorageFileDeinit(data[i].src);
if (data[i].prepared)
qemuDomainDiskChainElementRevoke(driver, vm, data[i].src);
virStorageSourceFree(data[i].src);
}
virStorageSourceFree(data[i].persistsrc);
VIR_FREE(data[i].relPath);
}
VIR_FREE(data);
}
/**
* qemuDomainSnapshotDiskDataCollect:
*
* Collects and prepares a list of structures that hold information about disks
* that are selected for the snapshot.
*/
static qemuDomainSnapshotDiskDataPtr
qemuDomainSnapshotDiskDataCollect(virQEMUDriverPtr driver,
virDomainObjPtr vm,
virDomainSnapshotObjPtr snap,
bool reuse)
{
size_t i;
qemuDomainSnapshotDiskDataPtr ret;
qemuDomainSnapshotDiskDataPtr dd;
char *backingStoreStr;
if (VIR_ALLOC_N(ret, snap->def->ndisks) < 0)
return NULL;
for (i = 0; i < snap->def->ndisks; i++) {
if (snap->def->disks[i].snapshot == VIR_DOMAIN_SNAPSHOT_LOCATION_NONE)
continue;
dd = ret + i;
dd->disk = vm->def->disks[i];
if (!(dd->src = virStorageSourceCopy(snap->def->disks[i].src, false)))
goto error;
if (virStorageSourceInitChainElement(dd->src, dd->disk->src, false) < 0)
goto error;
if (qemuDomainStorageFileInit(driver, vm, dd->src, NULL) < 0)
goto error;
dd->initialized = true;
/* relative backing store paths need to be updated so that relative
* block commit still works */
if (reuse) {
if (virStorageFileGetBackingStoreStr(dd->src, &backingStoreStr) < 0)
goto error;
if (backingStoreStr != NULL) {
if (virStorageIsRelative(backingStoreStr))
VIR_STEAL_PTR(dd->relPath, backingStoreStr);
else
VIR_FREE(backingStoreStr);
}
}
/* Note that it's unsafe to assume that the disks in the persistent
* definition match up with the disks in the live definition just by
* checking that the target name is the same. We've done that
* historically this way though. */
if (vm->newDef &&
(dd->persistdisk = virDomainDiskByName(vm->newDef, dd->disk->dst,
false))) {
if (!(dd->persistsrc = virStorageSourceCopy(dd->src, false)))
goto error;
if (virStorageSourceInitChainElement(dd->persistsrc,
dd->persistdisk->src, false) < 0)
goto error;
}
}
return ret;
error:
qemuDomainSnapshotDiskDataFree(ret, snap->def->ndisks, driver, vm);
return NULL;
}
static void
qemuDomainSnapshotUpdateDiskSourcesRenumber(virStorageSourcePtr src)
{
virStorageSourcePtr next;
unsigned int idx = 1;
for (next = src->backingStore; virStorageSourceIsBacking(next); next = next->backingStore)
next->id = idx++;
}
/**
* qemuDomainSnapshotUpdateDiskSources:
* @dd: snapshot disk data object
* @persist: set to true if persistent config of the VM was changed
*
* Updates disk definition after a successful snapshot.
*/
static void
qemuDomainSnapshotUpdateDiskSources(qemuDomainSnapshotDiskDataPtr dd,
bool *persist)
{
if (!dd->src)
return;
/* storage driver access won'd be needed */
if (dd->initialized)
virStorageFileDeinit(dd->src);
/* the old disk image is now readonly */
dd->disk->src->readonly = true;
VIR_STEAL_PTR(dd->disk->src->relPath, dd->relPath);
VIR_STEAL_PTR(dd->src->backingStore, dd->disk->src);
VIR_STEAL_PTR(dd->disk->src, dd->src);
/* fix numbering of disks */
qemuDomainSnapshotUpdateDiskSourcesRenumber(dd->disk->src);
if (dd->persistdisk) {
VIR_STEAL_PTR(dd->persistsrc->backingStore, dd->persistdisk->src);
VIR_STEAL_PTR(dd->persistdisk->src, dd->persistsrc);
*persist = true;
}
}
static int
qemuDomainSnapshotCreateSingleDiskActive(virQEMUDriverPtr driver,
virDomainObjPtr vm,
qemuDomainSnapshotDiskDataPtr dd,
virJSONValuePtr actions,
bool reuse)
{
int ret = -1;
if (qemuBlockSnapshotAddLegacy(actions, dd->disk, dd->src, reuse) < 0)
goto cleanup;
/* pre-create the image file so that we can label it before handing it to qemu */
if (!reuse && dd->src->type != VIR_STORAGE_TYPE_BLOCK) {
if (virStorageFileCreate(dd->src) < 0) {
virReportSystemError(errno, _("failed to create image file '%s'"),
NULLSTR(dd->src->path));
goto cleanup;
}
dd->created = true;
}
/* set correct security, cgroup and locking options on the new image */
if (qemuDomainDiskChainElementPrepare(driver, vm, dd->src, false, true) < 0) {
qemuDomainDiskChainElementRevoke(driver, vm, dd->src);
goto cleanup;
}
dd->prepared = true;
ret = 0;
cleanup:
return ret;
}
/* The domain is expected to be locked and active. */
static int
qemuDomainSnapshotCreateDiskActive(virQEMUDriverPtr driver,
virDomainObjPtr vm,
virDomainSnapshotObjPtr snap,
unsigned int flags,
qemuDomainAsyncJob asyncJob)
{
qemuDomainObjPrivatePtr priv = vm->privateData;
virJSONValuePtr actions = NULL;
bool do_transaction = false;
int ret = 0;
size_t i;
bool persist = false;
bool reuse = (flags & VIR_DOMAIN_SNAPSHOT_CREATE_REUSE_EXT) != 0;
virQEMUDriverConfigPtr cfg = NULL;
qemuDomainSnapshotDiskDataPtr diskdata = NULL;
virErrorPtr orig_err = NULL;
if (virDomainObjCheckActive(vm) < 0)
return -1;
if (!(actions = virJSONValueNewArray()))
return -1;
/* prepare a list of objects to use in the vm definition so that we don't
* have to roll back later */
if (!(diskdata = qemuDomainSnapshotDiskDataCollect(driver, vm, snap, reuse)))
goto cleanup;
cfg = virQEMUDriverGetConfig(driver);
/* Based on earlier qemuDomainSnapshotPrepare, all disks in this list are
* now either VIR_DOMAIN_SNAPSHOT_LOCATION_NONE, or
* VIR_DOMAIN_SNAPSHOT_LOCATION_EXTERNAL with a valid file name and
* qcow2 format. */
for (i = 0; i < snap->def->ndisks; i++) {
if (!diskdata[i].src)
continue;
ret = qemuDomainSnapshotCreateSingleDiskActive(driver, vm,
&diskdata[i],
actions, reuse);
if (ret < 0)
goto error;
do_transaction = true;
}
if (do_transaction) {
if (qemuDomainObjEnterMonitorAsync(driver, vm, asyncJob) < 0)
goto cleanup;
ret = qemuMonitorTransaction(priv->mon, &actions);
if (qemuDomainObjExitMonitor(driver, vm) < 0)
ret = -1;
for (i = 0; i < snap->def->ndisks; i++) {
qemuDomainSnapshotDiskDataPtr dd = &diskdata[i];
if (!dd->src)
continue;
virDomainAuditDisk(vm, dd->disk->src, dd->src, "snapshot", ret >= 0);
if (ret == 0)
qemuDomainSnapshotUpdateDiskSources(dd, &persist);
}
if (ret < 0)
goto error;
}
error:
if (ret < 0) {
orig_err = virSaveLastError();
for (i = 0; i < snap->def->ndisks; i++) {
if (!diskdata[i].src)
continue;
if (diskdata[i].prepared)
qemuDomainDiskChainElementRevoke(driver, vm, diskdata[i].src);
if (diskdata[i].created &&
virStorageFileUnlink(diskdata[i].src) < 0)
VIR_WARN("Unable to remove just-created %s", diskdata[i].src->path);
}
} else {
/* on successful snapshot we need to remove locks from the now-old
* disks and if the VM is paused release locks on the images since qemu
* stopped using them*/
bool paused = virDomainObjGetState(vm, NULL) != VIR_DOMAIN_RUNNING;
for (i = 0; i < snap->def->ndisks; i++) {
if (!diskdata[i].disk)
continue;
if (paused)
virDomainLockImageDetach(driver->lockManager, vm,
diskdata[i].disk->src);
virDomainLockImageDetach(driver->lockManager, vm,
diskdata[i].disk->src->backingStore);
}
}
if (ret == 0 || !do_transaction) {
if (virDomainSaveStatus(driver->xmlopt, cfg->stateDir, vm, driver->caps) < 0 ||
(persist && virDomainSaveConfig(cfg->configDir, driver->caps,
vm->newDef) < 0))
ret = -1;
}
cleanup:
qemuDomainSnapshotDiskDataFree(diskdata, snap->def->ndisks, driver, vm);
virJSONValueFree(actions);
virObjectUnref(cfg);
if (orig_err) {
virSetError(orig_err);
virFreeError(orig_err);
}
return ret;
}
static int
qemuDomainSnapshotCreateActiveExternal(virQEMUDriverPtr driver,
virDomainObjPtr vm,
virDomainSnapshotObjPtr snap,
unsigned int flags)
{
virObjectEventPtr event;
bool resume = false;
int ret = -1;
qemuDomainObjPrivatePtr priv = vm->privateData;
char *xml = NULL;
bool memory = snap->def->memory == VIR_DOMAIN_SNAPSHOT_LOCATION_EXTERNAL;
bool memory_unlink = false;
int thaw = 0; /* 1 if freeze succeeded, -1 if freeze failed */
bool pmsuspended = false;
virQEMUDriverConfigPtr cfg = NULL;
int compressed;
char *compressedpath = NULL;
virQEMUSaveDataPtr data = NULL;
if (!virQEMUCapsGet(priv->qemuCaps, QEMU_CAPS_DISK_SNAPSHOT) ||
!virQEMUCapsGet(priv->qemuCaps, QEMU_CAPS_TRANSACTION)) {
virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s",
_("live disk snapshot not supported with this "
"QEMU binary"));
return -1;
}
/* If quiesce was requested, then issue a freeze command, and a
* counterpart thaw command when it is actually sent to agent.
* The command will fail if the guest is paused or the guest agent
* is not running, or is already quiesced. */
if (flags & VIR_DOMAIN_SNAPSHOT_CREATE_QUIESCE) {
int freeze;
if (qemuDomainObjBeginAgentJob(driver, vm, QEMU_AGENT_JOB_MODIFY) < 0)
goto cleanup;
if (virDomainObjCheckActive(vm) < 0) {
qemuDomainObjEndAgentJob(vm);
goto cleanup;
}
freeze = qemuDomainSnapshotFSFreeze(driver, vm, NULL, 0);
qemuDomainObjEndAgentJob(vm);
if (freeze < 0) {
/* the helper reported the error */
if (freeze == -2)
thaw = -1; /* the command is sent but agent failed */
goto cleanup;
}
thaw = 1;
}
/* We need to track what state the guest is in, since taking the
* snapshot may alter that state and we must restore it later. */
if (virDomainObjGetState(vm, NULL) == VIR_DOMAIN_PMSUSPENDED) {
pmsuspended = true;
} else if (virDomainObjGetState(vm, NULL) == VIR_DOMAIN_RUNNING) {
/* For external checkpoints (those with memory), the guest
* must pause (either by libvirt up front, or by qemu after
* _LIVE converges). */
if (memory)
resume = true;
if (memory && !(flags & VIR_DOMAIN_SNAPSHOT_CREATE_LIVE)) {
if (qemuProcessStopCPUs(driver, vm, VIR_DOMAIN_PAUSED_SNAPSHOT,
QEMU_ASYNC_JOB_SNAPSHOT) < 0)
goto cleanup;
if (!virDomainObjIsActive(vm)) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("guest unexpectedly quit"));
goto cleanup;
}
resume = true;
}
}
/* do the memory snapshot if necessary */
if (memory) {
/* check if migration is possible */
if (!qemuMigrationSrcIsAllowed(driver, vm, false, 0))
goto cleanup;
/* allow the migration job to be cancelled or the domain to be paused */
qemuDomainObjSetAsyncJobMask(vm, (QEMU_JOB_DEFAULT_MASK |
JOB_MASK(QEMU_JOB_SUSPEND) |
JOB_MASK(QEMU_JOB_MIGRATION_OP)));
cfg = virQEMUDriverGetConfig(driver);
if ((compressed = qemuGetCompressionProgram(cfg->snapshotImageFormat,
&compressedpath,
"snapshot", false)) < 0)
goto cleanup;
if (!(xml = qemuDomainDefFormatLive(driver, vm->def, priv->origCPU,
true, true)) ||
!(snap->def->cookie = (virObjectPtr) qemuDomainSaveCookieNew(vm)))
goto cleanup;
if (!(data = virQEMUSaveDataNew(xml,
(qemuDomainSaveCookiePtr) snap->def->cookie,
resume, compressed, driver->xmlopt)))
goto cleanup;
xml = NULL;
if ((ret = qemuDomainSaveMemory(driver, vm, snap->def->file, data,
compressedpath, 0,
QEMU_ASYNC_JOB_SNAPSHOT)) < 0)
goto cleanup;
/* the memory image was created, remove it on errors */
memory_unlink = true;
/* forbid any further manipulation */
qemuDomainObjSetAsyncJobMask(vm, QEMU_JOB_DEFAULT_MASK);
}
/* the domain is now paused if a memory snapshot was requested */
if ((ret = qemuDomainSnapshotCreateDiskActive(driver, vm, snap, flags,
QEMU_ASYNC_JOB_SNAPSHOT)) < 0)
goto cleanup;
/* the snapshot is complete now */
if (flags & VIR_DOMAIN_SNAPSHOT_CREATE_HALT) {
event = virDomainEventLifecycleNewFromObj(vm, VIR_DOMAIN_EVENT_STOPPED,
VIR_DOMAIN_EVENT_STOPPED_FROM_SNAPSHOT);
qemuProcessStop(driver, vm, VIR_DOMAIN_SHUTOFF_FROM_SNAPSHOT,
QEMU_ASYNC_JOB_SNAPSHOT, 0);
virDomainAuditStop(vm, "from-snapshot");
resume = false;
thaw = 0;
virObjectEventStateQueue(driver->domainEventState, event);
} else if (memory && pmsuspended) {
/* qemu 1.3 is unable to save a domain in pm-suspended (S3)
* state; so we must emit an event stating that it was
* converted to paused. */
virDomainObjSetState(vm, VIR_DOMAIN_PAUSED,
VIR_DOMAIN_PAUSED_FROM_SNAPSHOT);
event = virDomainEventLifecycleNewFromObj(vm, VIR_DOMAIN_EVENT_SUSPENDED,
VIR_DOMAIN_EVENT_SUSPENDED_FROM_SNAPSHOT);
virObjectEventStateQueue(driver->domainEventState, event);
}
ret = 0;
cleanup:
if (resume && virDomainObjIsActive(vm) &&
qemuProcessStartCPUs(driver, vm,
VIR_DOMAIN_RUNNING_UNPAUSED,
QEMU_ASYNC_JOB_SNAPSHOT) < 0) {
event = virDomainEventLifecycleNewFromObj(vm,
VIR_DOMAIN_EVENT_SUSPENDED,
VIR_DOMAIN_EVENT_SUSPENDED_API_ERROR);
virObjectEventStateQueue(driver->domainEventState, event);
if (virGetLastErrorCode() == VIR_ERR_OK) {
virReportError(VIR_ERR_OPERATION_FAILED, "%s",
_("resuming after snapshot failed"));
}
ret = -1;
}
if (thaw != 0 &&
qemuDomainObjBeginAgentJob(driver, vm, QEMU_AGENT_JOB_MODIFY) >= 0 &&
virDomainObjIsActive(vm)) {
if (qemuDomainSnapshotFSThaw(driver, vm, ret == 0 && thaw > 0) < 0) {
/* helper reported the error, if it was needed */
if (thaw > 0)
ret = -1;
}
qemuDomainObjEndAgentJob(vm);
}
virQEMUSaveDataFree(data);
VIR_FREE(xml);
VIR_FREE(compressedpath);
virObjectUnref(cfg);
if (memory_unlink && ret < 0)
unlink(snap->def->file);
return ret;
}
static virDomainSnapshotPtr
qemuDomainSnapshotCreateXML(virDomainPtr domain,
const char *xmlDesc,
unsigned int flags)
{
virQEMUDriverPtr driver = domain->conn->privateData;
virDomainObjPtr vm = NULL;
char *xml = NULL;
virDomainSnapshotObjPtr snap = NULL;
virDomainSnapshotPtr snapshot = NULL;
virDomainSnapshotDefPtr def = NULL;
bool update_current = true;
bool redefine = flags & VIR_DOMAIN_SNAPSHOT_CREATE_REDEFINE;
unsigned int parse_flags = VIR_DOMAIN_SNAPSHOT_PARSE_DISKS;
virDomainSnapshotObjPtr other = NULL;
int align_location = VIR_DOMAIN_SNAPSHOT_LOCATION_INTERNAL;
bool align_match = true;
virQEMUDriverConfigPtr cfg = NULL;
virCapsPtr caps = NULL;
qemuDomainObjPrivatePtr priv;
virCheckFlags(VIR_DOMAIN_SNAPSHOT_CREATE_REDEFINE |
VIR_DOMAIN_SNAPSHOT_CREATE_CURRENT |
VIR_DOMAIN_SNAPSHOT_CREATE_NO_METADATA |
VIR_DOMAIN_SNAPSHOT_CREATE_HALT |
VIR_DOMAIN_SNAPSHOT_CREATE_DISK_ONLY |
VIR_DOMAIN_SNAPSHOT_CREATE_REUSE_EXT |
VIR_DOMAIN_SNAPSHOT_CREATE_QUIESCE |
VIR_DOMAIN_SNAPSHOT_CREATE_ATOMIC |
VIR_DOMAIN_SNAPSHOT_CREATE_LIVE, NULL);
VIR_REQUIRE_FLAG_RET(VIR_DOMAIN_SNAPSHOT_CREATE_QUIESCE,
VIR_DOMAIN_SNAPSHOT_CREATE_DISK_ONLY,
NULL);
if ((redefine && !(flags & VIR_DOMAIN_SNAPSHOT_CREATE_CURRENT)) ||
(flags & VIR_DOMAIN_SNAPSHOT_CREATE_NO_METADATA))
update_current = false;
if (redefine)
parse_flags |= VIR_DOMAIN_SNAPSHOT_PARSE_REDEFINE;
if (!(vm = qemuDomObjFromDomain(domain)))
goto cleanup;
cfg = virQEMUDriverGetConfig(driver);
if (virDomainSnapshotCreateXMLEnsureACL(domain->conn, vm->def, flags) < 0)
goto cleanup;
if (!(caps = virQEMUDriverGetCapabilities(driver, false)))
goto cleanup;
if (qemuProcessAutoDestroyActive(driver, vm)) {
virReportError(VIR_ERR_OPERATION_INVALID,
"%s", _("domain is marked for auto destroy"));
goto cleanup;
}
if (!vm->persistent && (flags & VIR_DOMAIN_SNAPSHOT_CREATE_HALT)) {
virReportError(VIR_ERR_OPERATION_INVALID, "%s",
_("cannot halt after transient domain snapshot"));
goto cleanup;
}
if ((flags & VIR_DOMAIN_SNAPSHOT_CREATE_DISK_ONLY) ||
!virDomainObjIsActive(vm))
parse_flags |= VIR_DOMAIN_SNAPSHOT_PARSE_OFFLINE;
if (!(def = virDomainSnapshotDefParseString(xmlDesc, caps, driver->xmlopt,
parse_flags)))
goto cleanup;
/* reject snapshot names containing slashes or starting with dot as
* snapshot definitions are saved in files named by the snapshot name */
if (!(flags & VIR_DOMAIN_SNAPSHOT_CREATE_NO_METADATA)) {
if (strchr(def->name, '/')) {
virReportError(VIR_ERR_XML_DETAIL,
_("invalid snapshot name '%s': "
"name can't contain '/'"),
def->name);
goto cleanup;
}
if (def->name[0] == '.') {
virReportError(VIR_ERR_XML_DETAIL,
_("invalid snapshot name '%s': "
"name can't start with '.'"),
def->name);
goto cleanup;
}
}
/* reject the VIR_DOMAIN_SNAPSHOT_CREATE_LIVE flag where not supported */
if (flags & VIR_DOMAIN_SNAPSHOT_CREATE_LIVE &&
(!virDomainObjIsActive(vm) ||
def->memory != VIR_DOMAIN_SNAPSHOT_LOCATION_EXTERNAL ||
redefine)) {
virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s",
_("live snapshot creation is supported only "
"with external checkpoints"));
goto cleanup;
}
/* allow snapshots only in certain states */
switch ((virDomainState) vm->state.state) {
/* valid states */
case VIR_DOMAIN_RUNNING:
case VIR_DOMAIN_PAUSED:
case VIR_DOMAIN_SHUTDOWN:
case VIR_DOMAIN_SHUTOFF:
case VIR_DOMAIN_CRASHED:
break;
case VIR_DOMAIN_PMSUSPENDED:
virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s",
_("qemu doesn't support taking snapshots of "
"PMSUSPENDED guests"));
goto cleanup;
/* invalid states */
case VIR_DOMAIN_NOSTATE:
case VIR_DOMAIN_BLOCKED: /* invalid state, unused in qemu */
case VIR_DOMAIN_LAST:
virReportError(VIR_ERR_INTERNAL_ERROR, _("Invalid domain state %s"),
virDomainStateTypeToString(vm->state.state));
goto cleanup;
}
/* We are going to modify the domain below. Internal snapshots would use
* a regular job, so we need to set the job mask to disallow query as
* 'savevm' blocks the monitor. External snapshot will then modify the
* job mask appropriately. */
if (qemuDomainObjBeginAsyncJob(driver, vm, QEMU_ASYNC_JOB_SNAPSHOT,
VIR_DOMAIN_JOB_OPERATION_SNAPSHOT, flags) < 0)
goto cleanup;
qemuDomainObjSetAsyncJobMask(vm, QEMU_JOB_NONE);
priv = vm->privateData;
if (redefine) {
if (virDomainSnapshotRedefinePrep(domain, vm, &def, &snap,
driver->xmlopt,
&update_current, flags) < 0)
goto endjob;
} else {
/* Easiest way to clone inactive portion of vm->def is via
* conversion in and back out of xml. */
if (!(xml = qemuDomainDefFormatLive(driver, vm->def, priv->origCPU,
true, true)) ||
!(def->dom = virDomainDefParseString(xml, caps, driver->xmlopt, NULL,
VIR_DOMAIN_DEF_PARSE_INACTIVE |
VIR_DOMAIN_DEF_PARSE_SKIP_VALIDATE)))
goto endjob;
if (flags & VIR_DOMAIN_SNAPSHOT_CREATE_DISK_ONLY) {
align_location = VIR_DOMAIN_SNAPSHOT_LOCATION_EXTERNAL;
align_match = false;
if (virDomainObjIsActive(vm))
def->state = VIR_DOMAIN_DISK_SNAPSHOT;
else
def->state = VIR_DOMAIN_SHUTOFF;
def->memory = VIR_DOMAIN_SNAPSHOT_LOCATION_NONE;
} else if (def->memory == VIR_DOMAIN_SNAPSHOT_LOCATION_EXTERNAL) {
def->state = virDomainObjGetState(vm, NULL);
align_location = VIR_DOMAIN_SNAPSHOT_LOCATION_EXTERNAL;
align_match = false;
} else {
def->state = virDomainObjGetState(vm, NULL);
if (virDomainObjIsActive(vm) &&
def->memory == VIR_DOMAIN_SNAPSHOT_LOCATION_NONE) {
virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s",
_("internal snapshot of a running VM "
"must include the memory state"));
goto endjob;
}
def->memory = (def->state == VIR_DOMAIN_SHUTOFF ?
VIR_DOMAIN_SNAPSHOT_LOCATION_NONE :
VIR_DOMAIN_SNAPSHOT_LOCATION_INTERNAL);
}
if (virDomainSnapshotAlignDisks(def, align_location,
align_match) < 0 ||
qemuDomainSnapshotPrepare(vm, def, &flags) < 0)
goto endjob;
}
if (!snap) {
if (!(snap = virDomainSnapshotAssignDef(vm->snapshots, def)))
goto endjob;
def = NULL;
}
if (update_current)
snap->def->current = true;
if (vm->current_snapshot) {
if (!redefine &&
VIR_STRDUP(snap->def->parent, vm->current_snapshot->def->name) < 0)
goto endjob;
if (update_current) {
vm->current_snapshot->def->current = false;
if (qemuDomainSnapshotWriteMetadata(vm, vm->current_snapshot,
driver->caps, driver->xmlopt,
cfg->snapshotDir) < 0)
goto endjob;
vm->current_snapshot = NULL;
}
}
/* actually do the snapshot */
if (redefine) {
/* XXX Should we validate that the redefined snapshot even
* makes sense, such as checking that qemu-img recognizes the
* snapshot name in at least one of the domain's disks? */
} else if (virDomainObjIsActive(vm)) {
if (flags & VIR_DOMAIN_SNAPSHOT_CREATE_DISK_ONLY ||
snap->def->memory == VIR_DOMAIN_SNAPSHOT_LOCATION_EXTERNAL) {
/* external checkpoint or disk snapshot */
if (qemuDomainSnapshotCreateActiveExternal(driver,
vm, snap, flags) < 0)
goto endjob;
} else {
/* internal checkpoint */
if (qemuDomainSnapshotCreateActiveInternal(driver,
vm, snap, flags) < 0)
goto endjob;
}
} else {
/* inactive; qemuDomainSnapshotPrepare guaranteed that we
* aren't mixing internal and external, and altered flags to
* contain DISK_ONLY if there is an external disk. */
if (flags & VIR_DOMAIN_SNAPSHOT_CREATE_DISK_ONLY) {
bool reuse = !!(flags & VIR_DOMAIN_SNAPSHOT_CREATE_REUSE_EXT);
if (qemuDomainSnapshotCreateInactiveExternal(driver, vm, snap,
reuse) < 0)
goto endjob;
} else {
if (qemuDomainSnapshotCreateInactiveInternal(driver, vm, snap) < 0)
goto endjob;
}
}
/* If we fail after this point, there's not a whole lot we can
* do; we've successfully taken the snapshot, and we are now running
* on it, so we have to go forward the best we can
*/
snapshot = virGetDomainSnapshot(domain, snap->def->name);
endjob:
if (snapshot && !(flags & VIR_DOMAIN_SNAPSHOT_CREATE_NO_METADATA)) {
if (qemuDomainSnapshotWriteMetadata(vm, snap, driver->caps,
driver->xmlopt,
cfg->snapshotDir) < 0) {
/* if writing of metadata fails, error out rather than trying
* to silently carry on without completing the snapshot */
virObjectUnref(snapshot);
snapshot = NULL;
virReportError(VIR_ERR_INTERNAL_ERROR,
_("unable to save metadata for snapshot %s"),
snap->def->name);
virDomainSnapshotObjListRemove(vm->snapshots, snap);
} else {
if (update_current)
vm->current_snapshot = snap;
other = virDomainSnapshotFindByName(vm->snapshots,
snap->def->parent);
snap->parent = other;
other->nchildren++;
snap->sibling = other->first_child;
other->first_child = snap;
}
} else if (snap) {
virDomainSnapshotObjListRemove(vm->snapshots, snap);
}
qemuDomainObjEndAsyncJob(driver, vm);
cleanup:
virDomainObjEndAPI(&vm);
virDomainSnapshotDefFree(def);
VIR_FREE(xml);
virObjectUnref(caps);
virObjectUnref(cfg);
return snapshot;
}
static int
qemuDomainSnapshotListNames(virDomainPtr domain,
char **names,
int nameslen,
unsigned int flags)
{
virDomainObjPtr vm = NULL;
int n = -1;
virCheckFlags(VIR_DOMAIN_SNAPSHOT_LIST_ROOTS |
VIR_DOMAIN_SNAPSHOT_FILTERS_ALL, -1);
if (!(vm = qemuDomObjFromDomain(domain)))
return -1;
if (virDomainSnapshotListNamesEnsureACL(domain->conn, vm->def) < 0)
goto cleanup;
n = virDomainSnapshotObjListGetNames(vm->snapshots, NULL, names, nameslen,
flags);
cleanup:
virDomainObjEndAPI(&vm);
return n;
}
static int
qemuDomainSnapshotNum(virDomainPtr domain,
unsigned int flags)
{
virDomainObjPtr vm = NULL;
int n = -1;
virCheckFlags(VIR_DOMAIN_SNAPSHOT_LIST_ROOTS |
VIR_DOMAIN_SNAPSHOT_FILTERS_ALL, -1);
if (!(vm = qemuDomObjFromDomain(domain)))
return -1;
if (virDomainSnapshotNumEnsureACL(domain->conn, vm->def) < 0)
goto cleanup;
n = virDomainSnapshotObjListNum(vm->snapshots, NULL, flags);
cleanup:
virDomainObjEndAPI(&vm);
return n;
}
static int
qemuDomainListAllSnapshots(virDomainPtr domain,
virDomainSnapshotPtr **snaps,
unsigned int flags)
{
virDomainObjPtr vm = NULL;
int n = -1;
virCheckFlags(VIR_DOMAIN_SNAPSHOT_LIST_ROOTS |
VIR_DOMAIN_SNAPSHOT_FILTERS_ALL, -1);
if (!(vm = qemuDomObjFromDomain(domain)))
return -1;
if (virDomainListAllSnapshotsEnsureACL(domain->conn, vm->def) < 0)
goto cleanup;
n = virDomainListSnapshots(vm->snapshots, NULL, domain, snaps, flags);
cleanup:
virDomainObjEndAPI(&vm);
return n;
}
static int
qemuDomainSnapshotListChildrenNames(virDomainSnapshotPtr snapshot,
char **names,
int nameslen,
unsigned int flags)
{
virDomainObjPtr vm = NULL;
virDomainSnapshotObjPtr snap = NULL;
int n = -1;
virCheckFlags(VIR_DOMAIN_SNAPSHOT_LIST_DESCENDANTS |
VIR_DOMAIN_SNAPSHOT_FILTERS_ALL, -1);
if (!(vm = qemuDomObjFromSnapshot(snapshot)))
return -1;
if (virDomainSnapshotListChildrenNamesEnsureACL(snapshot->domain->conn, vm->def) < 0)
goto cleanup;
if (!(snap = qemuSnapObjFromSnapshot(vm, snapshot)))
goto cleanup;
n = virDomainSnapshotObjListGetNames(vm->snapshots, snap, names, nameslen,
flags);
cleanup:
virDomainObjEndAPI(&vm);
return n;
}
static int
qemuDomainSnapshotNumChildren(virDomainSnapshotPtr snapshot,
unsigned int flags)
{
virDomainObjPtr vm = NULL;
virDomainSnapshotObjPtr snap = NULL;
int n = -1;
virCheckFlags(VIR_DOMAIN_SNAPSHOT_LIST_DESCENDANTS |
VIR_DOMAIN_SNAPSHOT_FILTERS_ALL, -1);
if (!(vm = qemuDomObjFromSnapshot(snapshot)))
return -1;
if (virDomainSnapshotNumChildrenEnsureACL(snapshot->domain->conn, vm->def) < 0)
goto cleanup;
if (!(snap = qemuSnapObjFromSnapshot(vm, snapshot)))
goto cleanup;
n = virDomainSnapshotObjListNum(vm->snapshots, snap, flags);
cleanup:
virDomainObjEndAPI(&vm);
return n;
}
static int
qemuDomainSnapshotListAllChildren(virDomainSnapshotPtr snapshot,
virDomainSnapshotPtr **snaps,
unsigned int flags)
{
virDomainObjPtr vm = NULL;
virDomainSnapshotObjPtr snap = NULL;
int n = -1;
virCheckFlags(VIR_DOMAIN_SNAPSHOT_LIST_DESCENDANTS |
VIR_DOMAIN_SNAPSHOT_FILTERS_ALL, -1);
if (!(vm = qemuDomObjFromSnapshot(snapshot)))
return -1;
if (virDomainSnapshotListAllChildrenEnsureACL(snapshot->domain->conn, vm->def) < 0)
goto cleanup;
if (!(snap = qemuSnapObjFromSnapshot(vm, snapshot)))
goto cleanup;
n = virDomainListSnapshots(vm->snapshots, snap, snapshot->domain, snaps,
flags);
cleanup:
virDomainObjEndAPI(&vm);
return n;
}
static virDomainSnapshotPtr
qemuDomainSnapshotLookupByName(virDomainPtr domain,
const char *name,
unsigned int flags)
{
virDomainObjPtr vm;
virDomainSnapshotObjPtr snap = NULL;
virDomainSnapshotPtr snapshot = NULL;
virCheckFlags(0, NULL);
if (!(vm = qemuDomObjFromDomain(domain)))
return NULL;
if (virDomainSnapshotLookupByNameEnsureACL(domain->conn, vm->def) < 0)
goto cleanup;
if (!(snap = qemuSnapObjFromName(vm, name)))
goto cleanup;
snapshot = virGetDomainSnapshot(domain, snap->def->name);
cleanup:
virDomainObjEndAPI(&vm);
return snapshot;
}
static int
qemuDomainHasCurrentSnapshot(virDomainPtr domain,
unsigned int flags)
{
virDomainObjPtr vm;
int ret = -1;
virCheckFlags(0, -1);
if (!(vm = qemuDomObjFromDomain(domain)))
return -1;
if (virDomainHasCurrentSnapshotEnsureACL(domain->conn, vm->def) < 0)
goto cleanup;
ret = (vm->current_snapshot != NULL);
cleanup:
virDomainObjEndAPI(&vm);
return ret;
}
static virDomainSnapshotPtr
qemuDomainSnapshotGetParent(virDomainSnapshotPtr snapshot,
unsigned int flags)
{
virDomainObjPtr vm;
virDomainSnapshotObjPtr snap = NULL;
virDomainSnapshotPtr parent = NULL;
virCheckFlags(0, NULL);
if (!(vm = qemuDomObjFromSnapshot(snapshot)))
return NULL;
if (virDomainSnapshotGetParentEnsureACL(snapshot->domain->conn, vm->def) < 0)
goto cleanup;
if (!(snap = qemuSnapObjFromSnapshot(vm, snapshot)))
goto cleanup;
if (!snap->def->parent) {
virReportError(VIR_ERR_NO_DOMAIN_SNAPSHOT,
_("snapshot '%s' does not have a parent"),
snap->def->name);
goto cleanup;
}
parent = virGetDomainSnapshot(snapshot->domain, snap->def->parent);
cleanup:
virDomainObjEndAPI(&vm);
return parent;
}
static virDomainSnapshotPtr
qemuDomainSnapshotCurrent(virDomainPtr domain,
unsigned int flags)
{
virDomainObjPtr vm;
virDomainSnapshotPtr snapshot = NULL;
virCheckFlags(0, NULL);
if (!(vm = qemuDomObjFromDomain(domain)))
return NULL;
if (virDomainSnapshotCurrentEnsureACL(domain->conn, vm->def) < 0)
goto cleanup;
if (!vm->current_snapshot) {
virReportError(VIR_ERR_NO_DOMAIN_SNAPSHOT, "%s",
_("the domain does not have a current snapshot"));
goto cleanup;
}
snapshot = virGetDomainSnapshot(domain, vm->current_snapshot->def->name);
cleanup:
virDomainObjEndAPI(&vm);
return snapshot;
}
static char *
qemuDomainSnapshotGetXMLDesc(virDomainSnapshotPtr snapshot,
unsigned int flags)
{
virQEMUDriverPtr driver = snapshot->domain->conn->privateData;
virDomainObjPtr vm = NULL;
char *xml = NULL;
virDomainSnapshotObjPtr snap = NULL;
char uuidstr[VIR_UUID_STRING_BUFLEN];
virCheckFlags(VIR_DOMAIN_XML_SECURE, NULL);
if (!(vm = qemuDomObjFromSnapshot(snapshot)))
return NULL;
if (virDomainSnapshotGetXMLDescEnsureACL(snapshot->domain->conn, vm->def, flags) < 0)
goto cleanup;
if (!(snap = qemuSnapObjFromSnapshot(vm, snapshot)))
goto cleanup;
virUUIDFormat(snapshot->domain->uuid, uuidstr);
xml = virDomainSnapshotDefFormat(uuidstr, snap->def,
driver->caps, driver->xmlopt,
virDomainDefFormatConvertXMLFlags(flags),
0);
cleanup:
virDomainObjEndAPI(&vm);
return xml;
}
static int
qemuDomainSnapshotIsCurrent(virDomainSnapshotPtr snapshot,
unsigned int flags)
{
virDomainObjPtr vm = NULL;
int ret = -1;
virDomainSnapshotObjPtr snap = NULL;
virCheckFlags(0, -1);
if (!(vm = qemuDomObjFromSnapshot(snapshot)))
return -1;
if (virDomainSnapshotIsCurrentEnsureACL(snapshot->domain->conn, vm->def) < 0)
goto cleanup;
if (!(snap = qemuSnapObjFromSnapshot(vm, snapshot)))
goto cleanup;
ret = (vm->current_snapshot &&
STREQ(snapshot->name, vm->current_snapshot->def->name));
cleanup:
virDomainObjEndAPI(&vm);
return ret;
}
static int
qemuDomainSnapshotHasMetadata(virDomainSnapshotPtr snapshot,
unsigned int flags)
{
virDomainObjPtr vm = NULL;
int ret = -1;
virDomainSnapshotObjPtr snap = NULL;
virCheckFlags(0, -1);
if (!(vm = qemuDomObjFromSnapshot(snapshot)))
return -1;
if (virDomainSnapshotHasMetadataEnsureACL(snapshot->domain->conn, vm->def) < 0)
goto cleanup;
if (!(snap = qemuSnapObjFromSnapshot(vm, snapshot)))
goto cleanup;
/* XXX Someday, we should recognize internal snapshots in qcow2
* images that are not tied to a libvirt snapshot; if we ever do
* that, then we would have a reason to return 0 here. */
ret = 1;
cleanup:
virDomainObjEndAPI(&vm);
return ret;
}
/* The domain is expected to be locked and inactive. */
static int
qemuDomainSnapshotRevertInactive(virQEMUDriverPtr driver,
virDomainObjPtr vm,
virDomainSnapshotObjPtr snap)
{
/* Try all disks, but report failure if we skipped any. */
int ret = qemuDomainSnapshotForEachQcow2(driver, vm, snap, "-a", true);
return ret > 0 ? -1 : ret;
}
static int
qemuDomainRevertToSnapshot(virDomainSnapshotPtr snapshot,
unsigned int flags)
{
virQEMUDriverPtr driver = snapshot->domain->conn->privateData;
virDomainObjPtr vm = NULL;
int ret = -1;
virDomainSnapshotObjPtr snap = NULL;
virObjectEventPtr event = NULL;
virObjectEventPtr event2 = NULL;
int detail;
qemuDomainObjPrivatePtr priv;
int rc;
virDomainDefPtr config = NULL;
virQEMUDriverConfigPtr cfg = NULL;
virCapsPtr caps = NULL;
bool was_stopped = false;
qemuDomainSaveCookiePtr cookie;
virCPUDefPtr origCPU = NULL;
unsigned int start_flags = VIR_QEMU_PROCESS_START_GEN_VMID;
qemuDomainAsyncJob jobType = QEMU_ASYNC_JOB_START;
virCheckFlags(VIR_DOMAIN_SNAPSHOT_REVERT_RUNNING |
VIR_DOMAIN_SNAPSHOT_REVERT_PAUSED |
VIR_DOMAIN_SNAPSHOT_REVERT_FORCE, -1);
/* We have the following transitions, which create the following events:
* 1. inactive -> inactive: none
* 2. inactive -> running: EVENT_STARTED
* 3. inactive -> paused: EVENT_STARTED, EVENT_PAUSED
* 4. running -> inactive: EVENT_STOPPED
* 5. running -> running: none
* 6. running -> paused: EVENT_PAUSED
* 7. paused -> inactive: EVENT_STOPPED
* 8. paused -> running: EVENT_RESUMED
* 9. paused -> paused: none
* Also, several transitions occur even if we fail partway through,
* and use of FORCE can cause multiple transitions.
*/
virNWFilterReadLockFilterUpdates();
if (!(vm = qemuDomObjFromSnapshot(snapshot)))
goto cleanup;
cfg = virQEMUDriverGetConfig(driver);
if (virDomainRevertToSnapshotEnsureACL(snapshot->domain->conn, vm->def) < 0)
goto cleanup;
if (!(caps = virQEMUDriverGetCapabilities(driver, false)))
goto cleanup;
if (qemuDomainHasBlockjob(vm, false)) {
virReportError(VIR_ERR_OPERATION_INVALID, "%s",
_("domain has active block job"));
goto cleanup;
}
if (qemuProcessBeginJob(driver, vm,
VIR_DOMAIN_JOB_OPERATION_SNAPSHOT_REVERT,
flags) < 0)
goto cleanup;
if (!(snap = qemuSnapObjFromSnapshot(vm, snapshot)))
goto endjob;
if (!vm->persistent &&
snap->def->state != VIR_DOMAIN_RUNNING &&
snap->def->state != VIR_DOMAIN_PAUSED &&
(flags & (VIR_DOMAIN_SNAPSHOT_REVERT_RUNNING |
VIR_DOMAIN_SNAPSHOT_REVERT_PAUSED)) == 0) {
virReportError(VIR_ERR_OPERATION_INVALID, "%s",
_("transient domain needs to request run or pause "
"to revert to inactive snapshot"));
goto endjob;
}
if (virDomainSnapshotIsExternal(snap)) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("revert to external snapshot not supported yet"));
goto endjob;
}
if (!(flags & VIR_DOMAIN_SNAPSHOT_REVERT_FORCE)) {
if (!snap->def->dom) {
virReportError(VIR_ERR_SNAPSHOT_REVERT_RISKY,
_("snapshot '%s' lacks domain '%s' rollback info"),
snap->def->name, vm->def->name);
goto endjob;
}
if (virDomainObjIsActive(vm) &&
!(snap->def->state == VIR_DOMAIN_RUNNING
|| snap->def->state == VIR_DOMAIN_PAUSED) &&
(flags & (VIR_DOMAIN_SNAPSHOT_REVERT_RUNNING |
VIR_DOMAIN_SNAPSHOT_REVERT_PAUSED))) {
virReportError(VIR_ERR_SNAPSHOT_REVERT_RISKY, "%s",
_("must respawn qemu to start inactive snapshot"));
goto endjob;
}
}
if (vm->current_snapshot) {
vm->current_snapshot->def->current = false;
if (qemuDomainSnapshotWriteMetadata(vm, vm->current_snapshot,
driver->caps, driver->xmlopt,
cfg->snapshotDir) < 0)
goto endjob;
vm->current_snapshot = NULL;
/* XXX Should we restore vm->current_snapshot after this point
* in the failure cases where we know there was no change? */
}
/* Prepare to copy the snapshot inactive xml as the config of this
* domain.
*
* XXX Should domain snapshots track live xml rather
* than inactive xml? */
snap->def->current = true;
if (snap->def->dom) {
config = virDomainDefCopy(snap->def->dom, caps,
driver->xmlopt, NULL, true);
if (!config)
goto endjob;
}
cookie = (qemuDomainSaveCookiePtr) snap->def->cookie;
switch ((virDomainState) snap->def->state) {
case VIR_DOMAIN_RUNNING:
case VIR_DOMAIN_PAUSED:
start_flags |= VIR_QEMU_PROCESS_START_PAUSED;
/* Transitions 2, 3, 5, 6, 8, 9 */
/* When using the loadvm monitor command, qemu does not know
* whether to pause or run the reverted domain, and just stays
* in the same state as before the monitor command, whether
* that is paused or running. We always pause before loadvm,
* to have finer control. */
if (virDomainObjIsActive(vm)) {
/* Transitions 5, 6, 8, 9 */
/* Check for ABI compatibility. We need to do this check against
* the migratable XML or it will always fail otherwise */
if (config) {
bool compatible;
/* Replace the CPU in config and put the original one in priv
* once we're done. When we have the updated CPU def in the
* cookie, we don't want to replace the CPU in migratable def
* when doing ABI checks to make sure the current CPU exactly
* matches the one used at the time the snapshot was taken.
*/
if (cookie && cookie->cpu && config->cpu) {
origCPU = config->cpu;
if (!(config->cpu = virCPUDefCopy(cookie->cpu)))
goto endjob;
compatible = qemuDomainDefCheckABIStability(driver, vm->def,
config);
} else {
compatible = qemuDomainCheckABIStability(driver, vm, config);
}
/* If using VM GenID, there is no way currently to change
* the genid for the running guest, so set an error,
* mark as incompatible, and don't allow change of genid
* if the revert force flag would start the guest again. */
if (compatible && config->genidRequested) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("domain genid update requires restart"));
compatible = false;
start_flags &= ~VIR_QEMU_PROCESS_START_GEN_VMID;
}
if (!compatible) {
virErrorPtr err = virGetLastError();
if (!(flags & VIR_DOMAIN_SNAPSHOT_REVERT_FORCE)) {
/* Re-spawn error using correct category. */
if (err->code == VIR_ERR_CONFIG_UNSUPPORTED)
virReportError(VIR_ERR_SNAPSHOT_REVERT_RISKY, "%s",
err->str2);
goto endjob;
}
virResetError(err);
qemuProcessStop(driver, vm,
VIR_DOMAIN_SHUTOFF_FROM_SNAPSHOT,
QEMU_ASYNC_JOB_START, 0);
virDomainAuditStop(vm, "from-snapshot");
detail = VIR_DOMAIN_EVENT_STOPPED_FROM_SNAPSHOT;
event = virDomainEventLifecycleNewFromObj(vm,
VIR_DOMAIN_EVENT_STOPPED,
detail);
virObjectEventStateQueue(driver->domainEventState, event);
/* Start after stop won't be an async start job, so
* reset to none */
jobType = QEMU_ASYNC_JOB_NONE;
goto load;
}
}
priv = vm->privateData;
if (virDomainObjGetState(vm, NULL) == VIR_DOMAIN_RUNNING) {
/* Transitions 5, 6 */
if (qemuProcessStopCPUs(driver, vm,
VIR_DOMAIN_PAUSED_FROM_SNAPSHOT,
QEMU_ASYNC_JOB_START) < 0)
goto endjob;
/* Create an event now in case the restore fails, so
* that user will be alerted that they are now paused.
* If restore later succeeds, we might replace this. */
detail = VIR_DOMAIN_EVENT_SUSPENDED_FROM_SNAPSHOT;
event = virDomainEventLifecycleNewFromObj(vm,
VIR_DOMAIN_EVENT_SUSPENDED,
detail);
if (!virDomainObjIsActive(vm)) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("guest unexpectedly quit"));
goto endjob;
}
}
if (qemuDomainObjEnterMonitorAsync(driver, vm,
QEMU_ASYNC_JOB_START) < 0)
goto endjob;
rc = qemuMonitorLoadSnapshot(priv->mon, snap->def->name);
if (qemuDomainObjExitMonitor(driver, vm) < 0)
goto endjob;
if (rc < 0) {
/* XXX resume domain if it was running before the
* failed loadvm attempt? */
goto endjob;
}
if (config) {
virDomainObjAssignDef(vm, config, false, NULL);
virCPUDefFree(priv->origCPU);
VIR_STEAL_PTR(priv->origCPU, origCPU);
}
} else {
/* Transitions 2, 3 */
load:
was_stopped = true;
if (config)
virDomainObjAssignDef(vm, config, false, NULL);
/* No cookie means libvirt which saved the domain was too old to
* mess up the CPU definitions.
*/
if (cookie &&
qemuDomainFixupCPUs(vm, &cookie->cpu) < 0)
goto cleanup;
rc = qemuProcessStart(snapshot->domain->conn, driver, vm,
cookie ? cookie->cpu : NULL,
jobType, NULL, -1, NULL, snap,
VIR_NETDEV_VPORT_PROFILE_OP_CREATE,
start_flags);
virDomainAuditStart(vm, "from-snapshot", rc >= 0);
detail = VIR_DOMAIN_EVENT_STARTED_FROM_SNAPSHOT;
event = virDomainEventLifecycleNewFromObj(vm,
VIR_DOMAIN_EVENT_STARTED,
detail);
if (rc < 0)
goto endjob;
}
/* Touch up domain state. */
if (!(flags & VIR_DOMAIN_SNAPSHOT_REVERT_RUNNING) &&
(snap->def->state == VIR_DOMAIN_PAUSED ||
(flags & VIR_DOMAIN_SNAPSHOT_REVERT_PAUSED))) {
/* Transitions 3, 6, 9 */
virDomainObjSetState(vm, VIR_DOMAIN_PAUSED,
VIR_DOMAIN_PAUSED_FROM_SNAPSHOT);
if (was_stopped) {
/* Transition 3, use event as-is and add event2 */
detail = VIR_DOMAIN_EVENT_SUSPENDED_FROM_SNAPSHOT;
event2 = virDomainEventLifecycleNewFromObj(vm,
VIR_DOMAIN_EVENT_SUSPENDED,
detail);
} /* else transition 6 and 9 use event as-is */
} else {
/* Transitions 2, 5, 8 */
if (!virDomainObjIsActive(vm)) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("guest unexpectedly quit"));
goto endjob;
}
rc = qemuProcessStartCPUs(driver, vm,
VIR_DOMAIN_RUNNING_FROM_SNAPSHOT,
jobType);
if (rc < 0)
goto endjob;
virObjectUnref(event);
event = NULL;
if (was_stopped) {
/* Transition 2 */
detail = VIR_DOMAIN_EVENT_STARTED_FROM_SNAPSHOT;
event = virDomainEventLifecycleNewFromObj(vm,
VIR_DOMAIN_EVENT_STARTED,
detail);
}
}
break;
case VIR_DOMAIN_SHUTDOWN:
case VIR_DOMAIN_SHUTOFF:
case VIR_DOMAIN_CRASHED:
/* Transitions 1, 4, 7 */
/* Newer qemu -loadvm refuses to revert to the state of a snapshot
* created by qemu-img snapshot -c. If the domain is running, we
* must take it offline; then do the revert using qemu-img.
*/
if (virDomainObjIsActive(vm)) {
/* Transitions 4, 7 */
qemuProcessStop(driver, vm, VIR_DOMAIN_SHUTOFF_FROM_SNAPSHOT,
QEMU_ASYNC_JOB_START, 0);
virDomainAuditStop(vm, "from-snapshot");
detail = VIR_DOMAIN_EVENT_STOPPED_FROM_SNAPSHOT;
event = virDomainEventLifecycleNewFromObj(vm,
VIR_DOMAIN_EVENT_STOPPED,
detail);
}
if (qemuDomainSnapshotRevertInactive(driver, vm, snap) < 0) {
qemuDomainRemoveInactive(driver, vm);
qemuProcessEndJob(driver, vm);
goto cleanup;
}
if (config)
virDomainObjAssignDef(vm, config, false, NULL);
if (flags & (VIR_DOMAIN_SNAPSHOT_REVERT_RUNNING |
VIR_DOMAIN_SNAPSHOT_REVERT_PAUSED)) {
/* Flush first event, now do transition 2 or 3 */
bool paused = (flags & VIR_DOMAIN_SNAPSHOT_REVERT_PAUSED) != 0;
start_flags |= paused ? VIR_QEMU_PROCESS_START_PAUSED : 0;
virObjectEventStateQueue(driver->domainEventState, event);
rc = qemuProcessStart(snapshot->domain->conn, driver, vm, NULL,
QEMU_ASYNC_JOB_START, NULL, -1, NULL, NULL,
VIR_NETDEV_VPORT_PROFILE_OP_CREATE,
start_flags);
virDomainAuditStart(vm, "from-snapshot", rc >= 0);
if (rc < 0) {
qemuDomainRemoveInactive(driver, vm);
qemuProcessEndJob(driver, vm);
goto cleanup;
}
detail = VIR_DOMAIN_EVENT_STARTED_FROM_SNAPSHOT;
event = virDomainEventLifecycleNewFromObj(vm,
VIR_DOMAIN_EVENT_STARTED,
detail);
if (paused) {
detail = VIR_DOMAIN_EVENT_SUSPENDED_FROM_SNAPSHOT;
event2 = virDomainEventLifecycleNewFromObj(vm,
VIR_DOMAIN_EVENT_SUSPENDED,
detail);
}
}
break;
case VIR_DOMAIN_PMSUSPENDED:
virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s",
_("qemu doesn't support reversion of snapshot taken in "
"PMSUSPENDED state"));
goto endjob;
case VIR_DOMAIN_NOSTATE:
case VIR_DOMAIN_BLOCKED:
case VIR_DOMAIN_LAST:
virReportError(VIR_ERR_INTERNAL_ERROR,
_("Invalid target domain state '%s'. Refusing "
"snapshot reversion"),
virDomainStateTypeToString(snap->def->state));
goto endjob;
}
ret = 0;
endjob:
qemuProcessEndJob(driver, vm);
cleanup:
if (ret == 0) {
if (qemuDomainSnapshotWriteMetadata(vm, snap, driver->caps,
driver->xmlopt,
cfg->snapshotDir) < 0)
ret = -1;
else
vm->current_snapshot = snap;
} else if (snap) {
snap->def->current = false;
}
if (ret == 0 && config && vm->persistent &&
!(ret = virDomainSaveConfig(cfg->configDir, driver->caps,
vm->newDef ? vm->newDef : vm->def))) {
detail = VIR_DOMAIN_EVENT_DEFINED_FROM_SNAPSHOT;
virObjectEventStateQueue(driver->domainEventState,
virDomainEventLifecycleNewFromObj(vm,
VIR_DOMAIN_EVENT_DEFINED,
detail));
}
virObjectEventStateQueue(driver->domainEventState, event);
virObjectEventStateQueue(driver->domainEventState, event2);
virDomainObjEndAPI(&vm);
virObjectUnref(caps);
virObjectUnref(cfg);
virNWFilterUnlockFilterUpdates();
virCPUDefFree(origCPU);
return ret;
}
typedef struct _virQEMUSnapReparent virQEMUSnapReparent;
typedef virQEMUSnapReparent *virQEMUSnapReparentPtr;
struct _virQEMUSnapReparent {
virQEMUDriverConfigPtr cfg;
virDomainSnapshotObjPtr parent;
virDomainObjPtr vm;
virCapsPtr caps;
virDomainXMLOptionPtr xmlopt;
int err;
virDomainSnapshotObjPtr last;
};
static int
qemuDomainSnapshotReparentChildren(void *payload,
const void *name ATTRIBUTE_UNUSED,
void *data)
{
virDomainSnapshotObjPtr snap = payload;
virQEMUSnapReparentPtr rep = data;
if (rep->err < 0)
return 0;
VIR_FREE(snap->def->parent);
snap->parent = rep->parent;
if (rep->parent->def &&
VIR_STRDUP(snap->def->parent, rep->parent->def->name) < 0) {
rep->err = -1;
return 0;
}
if (!snap->sibling)
rep->last = snap;
rep->err = qemuDomainSnapshotWriteMetadata(rep->vm, snap,
rep->caps, rep->xmlopt,
rep->cfg->snapshotDir);
return 0;
}
static int
qemuDomainSnapshotDelete(virDomainSnapshotPtr snapshot,
unsigned int flags)
{
virQEMUDriverPtr driver = snapshot->domain->conn->privateData;
virDomainObjPtr vm = NULL;
int ret = -1;
virDomainSnapshotObjPtr snap = NULL;
virQEMUSnapRemove rem;
virQEMUSnapReparent rep;
bool metadata_only = !!(flags & VIR_DOMAIN_SNAPSHOT_DELETE_METADATA_ONLY);
int external = 0;
virQEMUDriverConfigPtr cfg = NULL;
virCheckFlags(VIR_DOMAIN_SNAPSHOT_DELETE_CHILDREN |
VIR_DOMAIN_SNAPSHOT_DELETE_METADATA_ONLY |
VIR_DOMAIN_SNAPSHOT_DELETE_CHILDREN_ONLY, -1);
if (!(vm = qemuDomObjFromSnapshot(snapshot)))
return -1;
cfg = virQEMUDriverGetConfig(driver);
if (virDomainSnapshotDeleteEnsureACL(snapshot->domain->conn, vm->def) < 0)
goto cleanup;
if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_MODIFY) < 0)
goto cleanup;
if (!(snap = qemuSnapObjFromSnapshot(vm, snapshot)))
goto endjob;
if (!metadata_only) {
if (!(flags & VIR_DOMAIN_SNAPSHOT_DELETE_CHILDREN_ONLY) &&
virDomainSnapshotIsExternal(snap))
external++;
if (flags & (VIR_DOMAIN_SNAPSHOT_DELETE_CHILDREN |
VIR_DOMAIN_SNAPSHOT_DELETE_CHILDREN_ONLY))
virDomainSnapshotForEachDescendant(snap,
qemuDomainSnapshotCountExternal,
&external);
if (external) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("deletion of %d external disk snapshots not "
"supported yet"), external);
goto endjob;
}
}
if (flags & (VIR_DOMAIN_SNAPSHOT_DELETE_CHILDREN |
VIR_DOMAIN_SNAPSHOT_DELETE_CHILDREN_ONLY)) {
rem.driver = driver;
rem.vm = vm;
rem.metadata_only = metadata_only;
rem.err = 0;
rem.current = false;
virDomainSnapshotForEachDescendant(snap,
qemuDomainSnapshotDiscardAll,
&rem);
if (rem.err < 0)
goto endjob;
if (rem.current) {
if (flags & VIR_DOMAIN_SNAPSHOT_DELETE_CHILDREN_ONLY) {
snap->def->current = true;
if (qemuDomainSnapshotWriteMetadata(vm, snap, driver->caps,
driver->xmlopt,
cfg->snapshotDir) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("failed to set snapshot '%s' as current"),
snap->def->name);
snap->def->current = false;
goto endjob;
}
}
vm->current_snapshot = snap;
}
} else if (snap->nchildren) {
rep.cfg = cfg;
rep.parent = snap->parent;
rep.vm = vm;
rep.err = 0;
rep.last = NULL;
rep.caps = driver->caps;
rep.xmlopt = driver->xmlopt;
virDomainSnapshotForEachChild(snap,
qemuDomainSnapshotReparentChildren,
&rep);
if (rep.err < 0)
goto endjob;
/* Can't modify siblings during ForEachChild, so do it now. */
snap->parent->nchildren += snap->nchildren;
rep.last->sibling = snap->parent->first_child;
snap->parent->first_child = snap->first_child;
}
if (flags & VIR_DOMAIN_SNAPSHOT_DELETE_CHILDREN_ONLY) {
snap->nchildren = 0;
snap->first_child = NULL;
ret = 0;
} else {
ret = qemuDomainSnapshotDiscard(driver, vm, snap, true, metadata_only);
}
endjob:
qemuDomainObjEndJob(driver, vm);
cleanup:
virDomainObjEndAPI(&vm);
virObjectUnref(cfg);
return ret;
}
static int qemuDomainQemuMonitorCommand(virDomainPtr domain, const char *cmd,
char **result, unsigned int flags)
{
virQEMUDriverPtr driver = domain->conn->privateData;
virDomainObjPtr vm = NULL;
int ret = -1;
qemuDomainObjPrivatePtr priv;
bool hmp;
virCheckFlags(VIR_DOMAIN_QEMU_MONITOR_COMMAND_HMP, -1);
if (!(vm = qemuDomObjFromDomain(domain)))
goto cleanup;
if (virDomainQemuMonitorCommandEnsureACL(domain->conn, vm->def) < 0)
goto cleanup;
if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_QUERY) < 0)
goto cleanup;
if (virDomainObjCheckActive(vm) < 0)
goto endjob;
priv = vm->privateData;
qemuDomainObjTaint(driver, vm, VIR_DOMAIN_TAINT_CUSTOM_MONITOR, NULL);
hmp = !!(flags & VIR_DOMAIN_QEMU_MONITOR_COMMAND_HMP);
qemuDomainObjEnterMonitor(driver, vm);
ret = qemuMonitorArbitraryCommand(priv->mon, cmd, result, hmp);
if (qemuDomainObjExitMonitor(driver, vm) < 0)
ret = -1;
endjob:
qemuDomainObjEndJob(driver, vm);
cleanup:
virDomainObjEndAPI(&vm);
return ret;
}
static virDomainPtr qemuDomainQemuAttach(virConnectPtr conn,
unsigned int pid_value,
unsigned int flags)
{
virQEMUDriverPtr driver = conn->privateData;
virDomainObjPtr vm = NULL;
virDomainDefPtr def = NULL;
virDomainPtr dom = NULL;
virDomainChrSourceDefPtr monConfig = NULL;
bool monJSON = false;
pid_t pid = pid_value;
char *pidfile = NULL;
virQEMUCapsPtr qemuCaps = NULL;
virCapsPtr caps = NULL;
virCheckFlags(0, NULL);
if (!(caps = virQEMUDriverGetCapabilities(driver, false)))
goto cleanup;
if (!(def = qemuParseCommandLinePid(driver->qemuCapsCache,
caps, driver->xmlopt, pid,
&pidfile, &monConfig, &monJSON)))
goto cleanup;
if (virDomainQemuAttachEnsureACL(conn, def) < 0)
goto cleanup;
if (!monConfig) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("No monitor connection for pid %u"), pid_value);
goto cleanup;
}
if (monConfig->type != VIR_DOMAIN_CHR_TYPE_UNIX) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("Cannot connect to monitor connection of type '%s' "
"for pid %u"),
virDomainChrTypeToString(monConfig->type),
pid_value);
goto cleanup;
}
if (!(def->name) &&
virAsprintf(&def->name, "attach-pid-%u", pid_value) < 0)
goto cleanup;
if (!(qemuCaps = virQEMUCapsCacheLookup(driver->qemuCapsCache,
def->emulator)))
goto cleanup;
if (qemuAssignDeviceAliases(def, qemuCaps) < 0)
goto cleanup;
if (!(vm = virDomainObjListAdd(driver->domains, def,
driver->xmlopt,
VIR_DOMAIN_OBJ_LIST_ADD_LIVE |
VIR_DOMAIN_OBJ_LIST_ADD_CHECK_LIVE,
NULL)))
goto cleanup;
def = NULL;
if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_MODIFY) < 0) {
qemuDomainRemoveInactive(driver, vm);
goto cleanup;
}
if (qemuProcessAttach(conn, driver, vm, pid,
pidfile, monConfig, monJSON) < 0) {
monConfig = NULL;
qemuDomainRemoveInactive(driver, vm);
qemuDomainObjEndJob(driver, vm);
goto cleanup;
}
monConfig = NULL;
dom = virGetDomain(conn, vm->def->name, vm->def->uuid, vm->def->id);
qemuDomainObjEndJob(driver, vm);
cleanup:
virDomainDefFree(def);
virDomainChrSourceDefFree(monConfig);
virDomainObjEndAPI(&vm);
VIR_FREE(pidfile);
virObjectUnref(caps);
virObjectUnref(qemuCaps);
return dom;
}
static int
qemuDomainOpenConsole(virDomainPtr dom,
const char *dev_name,
virStreamPtr st,
unsigned int flags)
{
virDomainObjPtr vm = NULL;
int ret = -1;
size_t i;
virDomainChrDefPtr chr = NULL;
qemuDomainObjPrivatePtr priv;
virCheckFlags(VIR_DOMAIN_CONSOLE_SAFE |
VIR_DOMAIN_CONSOLE_FORCE, -1);
if (!(vm = qemuDomObjFromDomain(dom)))
goto cleanup;
if (virDomainOpenConsoleEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
if (virDomainObjCheckActive(vm) < 0)
goto cleanup;
priv = vm->privateData;
if (dev_name) {
for (i = 0; !chr && i < vm->def->nconsoles; i++) {
if (vm->def->consoles[i]->info.alias &&
STREQ(dev_name, vm->def->consoles[i]->info.alias))
chr = vm->def->consoles[i];
}
for (i = 0; !chr && i < vm->def->nserials; i++) {
if (STREQ(dev_name, vm->def->serials[i]->info.alias))
chr = vm->def->serials[i];
}
for (i = 0; !chr && i < vm->def->nparallels; i++) {
if (STREQ(dev_name, vm->def->parallels[i]->info.alias))
chr = vm->def->parallels[i];
}
} else {
if (vm->def->nconsoles)
chr = vm->def->consoles[0];
else if (vm->def->nserials)
chr = vm->def->serials[0];
}
if (!chr) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("cannot find character device %s"),
NULLSTR(dev_name));
goto cleanup;
}
if (chr->source->type != VIR_DOMAIN_CHR_TYPE_PTY) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("character device %s is not using a PTY"),
dev_name ? dev_name : NULLSTR(chr->info.alias));
goto cleanup;
}
/* handle mutually exclusive access to console devices */
ret = virChrdevOpen(priv->devs,
chr->source,
st,
(flags & VIR_DOMAIN_CONSOLE_FORCE) != 0);
if (ret == 1) {
virReportError(VIR_ERR_OPERATION_FAILED, "%s",
_("Active console session exists for this domain"));
ret = -1;
}
cleanup:
virDomainObjEndAPI(&vm);
return ret;
}
static int
qemuDomainOpenChannel(virDomainPtr dom,
const char *name,
virStreamPtr st,
unsigned int flags)
{
virDomainObjPtr vm = NULL;
int ret = -1;
size_t i;
virDomainChrDefPtr chr = NULL;
qemuDomainObjPrivatePtr priv;
virCheckFlags(VIR_DOMAIN_CHANNEL_FORCE, -1);
if (!(vm = qemuDomObjFromDomain(dom)))
goto cleanup;
if (virDomainOpenChannelEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
if (virDomainObjCheckActive(vm) < 0)
goto cleanup;
priv = vm->privateData;
if (name) {
for (i = 0; !chr && i < vm->def->nchannels; i++) {
if (STREQ(name, vm->def->channels[i]->info.alias))
chr = vm->def->channels[i];
if (vm->def->channels[i]->targetType == \
VIR_DOMAIN_CHR_CHANNEL_TARGET_TYPE_VIRTIO &&
STREQ_NULLABLE(name, vm->def->channels[i]->target.name))
chr = vm->def->channels[i];
}
} else {
if (vm->def->nchannels)
chr = vm->def->channels[0];
}
if (!chr) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("cannot find channel %s"),
NULLSTR(name));
goto cleanup;
}
if (chr->source->type != VIR_DOMAIN_CHR_TYPE_UNIX) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("channel %s is not using a UNIX socket"),
name ? name : NULLSTR(chr->info.alias));
goto cleanup;
}
/* handle mutually exclusive access to channel devices */
ret = virChrdevOpen(priv->devs,
chr->source,
st,
(flags & VIR_DOMAIN_CHANNEL_FORCE) != 0);
if (ret == 1) {
virReportError(VIR_ERR_OPERATION_FAILED, "%s",
_("Active channel stream exists for this domain"));
ret = -1;
}
cleanup:
virDomainObjEndAPI(&vm);
return ret;
}
/* Called while holding the VM job lock, to implement a block job
* abort with pivot; this updates the VM definition as appropriate, on
* either success or failure. */
static int
qemuDomainBlockPivot(virQEMUDriverPtr driver,
virDomainObjPtr vm,
const char *device,
virDomainDiskDefPtr disk)
{
int ret = -1;
qemuDomainObjPrivatePtr priv = vm->privateData;
virStorageSourcePtr oldsrc = NULL;
virQEMUDriverConfigPtr cfg = virQEMUDriverGetConfig(driver);
if (!disk->mirror) {
virReportError(VIR_ERR_OPERATION_INVALID,
_("pivot of disk '%s' requires an active copy job"),
disk->dst);
goto cleanup;
}
if (disk->mirrorState != VIR_DOMAIN_DISK_MIRROR_STATE_READY) {
virReportError(VIR_ERR_BLOCK_COPY_ACTIVE,
_("disk '%s' not ready for pivot yet"),
disk->dst);
goto cleanup;
}
/* When pivoting to a shareable disk we need to make sure that the disk can
* be safely shared, since block copy might have changed the format. */
if (disk->src->shared && !disk->src->readonly &&
!qemuBlockStorageSourceSupportsConcurrentAccess(disk->mirror)) {
virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s",
_("can't pivot a shared disk to a storage volume not "
"supporting sharing"));
goto cleanup;
}
/* For active commit, the mirror is part of the already labeled
* chain. For blockcopy, we previously labeled only the top-level
* image; but if the user is reusing an external image that
* includes a backing file, the pivot may result in qemu needing
* to open the entire backing chain, so we need to label the
* entire chain. This action is safe even if the backing chain
* has already been labeled; but only necessary when we know for
* sure that there is a backing chain. */
if (disk->mirrorJob == VIR_DOMAIN_BLOCK_JOB_TYPE_COPY) {
oldsrc = disk->src;
disk->src = disk->mirror;
if (qemuDomainDetermineDiskChain(driver, vm, disk, true) < 0)
goto cleanup;
if (disk->mirror->format &&
disk->mirror->format != VIR_STORAGE_FILE_RAW &&
(qemuDomainNamespaceSetupDisk(vm, disk->src) < 0 ||
qemuSetupDiskCgroup(vm, disk) < 0 ||
qemuSecuritySetDiskLabel(driver, vm, disk) < 0))
goto cleanup;
disk->src = oldsrc;
oldsrc = NULL;
}
/* Attempt the pivot. Record the attempt now, to prevent duplicate
* attempts; but the actual disk change will be made when emitting
* the event.
* XXX On libvirtd restarts, if we missed the qemu event, we need
* to double check what state qemu is in.
* XXX We should be using qemu's rerror flag to make sure the job
* remains alive until we know its final state.
* XXX If the abort command is synchronous but the qemu event says
* that pivot failed, we need to reflect that failure into the
* overall return value. */
disk->mirrorState = VIR_DOMAIN_DISK_MIRROR_STATE_PIVOT;
qemuDomainObjEnterMonitor(driver, vm);
ret = qemuMonitorDrivePivot(priv->mon, device);
if (qemuDomainObjExitMonitor(driver, vm) < 0) {
ret = -1;
goto cleanup;
}
if (ret < 0) {
/* The pivot failed. The block job in QEMU remains in the synchronised
* phase. Reset the state we changed and return the error to the user */
disk->mirrorState = VIR_DOMAIN_DISK_MIRROR_STATE_READY;
}
cleanup:
if (oldsrc)
disk->src = oldsrc;
virObjectUnref(cfg);
return ret;
}
/* bandwidth in MiB/s per public API. Caller must lock vm beforehand,
* and not access it afterwards. */
static int
qemuDomainBlockPullCommon(virQEMUDriverPtr driver,
virDomainObjPtr vm,
const char *path,
const char *base,
unsigned long bandwidth,
unsigned int flags)
{
qemuDomainObjPrivatePtr priv = vm->privateData;
virQEMUDriverConfigPtr cfg = virQEMUDriverGetConfig(driver);
char *device = NULL;
virDomainDiskDefPtr disk;
virStorageSourcePtr baseSource = NULL;
unsigned int baseIndex = 0;
char *basePath = NULL;
char *backingPath = NULL;
unsigned long long speed = bandwidth;
qemuBlockJobDataPtr job = NULL;
int ret = -1;
if (flags & VIR_DOMAIN_BLOCK_REBASE_RELATIVE && !base) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("flag VIR_DOMAIN_BLOCK_REBASE_RELATIVE is valid only "
"with non-null base"));
goto cleanup;
}
if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_MODIFY) < 0)
goto cleanup;
if (virDomainObjCheckActive(vm) < 0)
goto endjob;
if (qemuDomainSupportsBlockJobs(vm) < 0)
goto endjob;
if (!(disk = qemuDomainDiskByName(vm->def, path)))
goto endjob;
if (!(device = qemuAliasDiskDriveFromDisk(disk)))
goto endjob;
if (qemuDomainDiskBlockJobIsActive(disk))
goto endjob;
if (base &&
(virStorageFileParseChainIndex(disk->dst, base, &baseIndex) < 0 ||
!(baseSource = virStorageFileChainLookup(disk->src, disk->src,
base, baseIndex, NULL))))
goto endjob;
if (baseSource) {
if (flags & VIR_DOMAIN_BLOCK_REBASE_RELATIVE) {
if (!virQEMUCapsGet(priv->qemuCaps, QEMU_CAPS_CHANGE_BACKING_FILE)) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("this QEMU binary doesn't support relative "
"block pull/rebase"));
goto endjob;
}
if (virStorageFileGetRelativeBackingPath(disk->src->backingStore,
baseSource,
&backingPath) < 0)
goto endjob;
if (!backingPath) {
virReportError(VIR_ERR_OPERATION_INVALID, "%s",
_("can't keep relative backing relationship"));
goto endjob;
}
}
}
/* Convert bandwidth MiB to bytes, if needed */
if (!(flags & VIR_DOMAIN_BLOCK_PULL_BANDWIDTH_BYTES)) {
if (speed > LLONG_MAX >> 20) {
virReportError(VIR_ERR_OVERFLOW,
_("bandwidth must be less than %llu"),
LLONG_MAX >> 20);
goto endjob;
}
speed <<= 20;
}
if (!(job = qemuBlockJobDiskNew(disk, QEMU_BLOCKJOB_TYPE_PULL)))
goto endjob;
qemuDomainObjEnterMonitor(driver, vm);
if (baseSource)
basePath = qemuMonitorDiskNameLookup(priv->mon, device, disk->src,
baseSource);
if (!baseSource || basePath)
ret = qemuMonitorBlockStream(priv->mon, device, basePath, backingPath,
speed);
if (qemuDomainObjExitMonitor(driver, vm) < 0)
ret = -1;
if (ret < 0)
goto endjob;
qemuBlockJobStarted(job);
if (virDomainSaveStatus(driver->xmlopt, cfg->stateDir, vm, driver->caps) < 0)
VIR_WARN("Unable to save status on vm %s after state change",
vm->def->name);
endjob:
qemuDomainObjEndJob(driver, vm);
cleanup:
qemuBlockJobStartupFinalize(job);
virObjectUnref(cfg);
VIR_FREE(basePath);
VIR_FREE(backingPath);
VIR_FREE(device);
virDomainObjEndAPI(&vm);
return ret;
}
static int
qemuDomainBlockJobAbort(virDomainPtr dom,
const char *path,
unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
char *device = NULL;
virDomainDiskDefPtr disk = NULL;
virQEMUDriverConfigPtr cfg = virQEMUDriverGetConfig(driver);
bool save = false;
bool pivot = !!(flags & VIR_DOMAIN_BLOCK_JOB_ABORT_PIVOT);
bool async = !!(flags & VIR_DOMAIN_BLOCK_JOB_ABORT_ASYNC);
qemuBlockJobDataPtr job = NULL;
virDomainObjPtr vm;
int ret = -1;
virCheckFlags(VIR_DOMAIN_BLOCK_JOB_ABORT_ASYNC |
VIR_DOMAIN_BLOCK_JOB_ABORT_PIVOT, -1);
if (!(vm = qemuDomObjFromDomain(dom)))
return -1;
if (virDomainBlockJobAbortEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_MODIFY) < 0)
goto cleanup;
if (virDomainObjCheckActive(vm) < 0)
goto endjob;
if (qemuDomainSupportsBlockJobs(vm) < 0)
goto endjob;
if (!(disk = qemuDomainDiskByName(vm->def, path)))
goto endjob;
if (!(device = qemuAliasDiskDriveFromDisk(disk)))
goto endjob;
if (!(job = qemuBlockJobDiskGetJob(disk))) {
virReportError(VIR_ERR_INVALID_ARG,
_("disk %s does not have an active block job"), disk->dst);
goto endjob;
}
if (disk->mirrorState != VIR_DOMAIN_DISK_MIRROR_STATE_NONE &&
disk->mirrorState != VIR_DOMAIN_DISK_MIRROR_STATE_READY) {
virReportError(VIR_ERR_OPERATION_INVALID,
_("another job on disk '%s' is still being ended"),
disk->dst);
goto endjob;
}
if (!async)
qemuBlockJobSyncBegin(job);
if (pivot) {
if ((ret = qemuDomainBlockPivot(driver, vm, device, disk)) < 0)
goto endjob;
} else {
if (disk->mirror) {
disk->mirrorState = VIR_DOMAIN_DISK_MIRROR_STATE_ABORT;
save = true;
}
qemuDomainObjEnterMonitor(driver, vm);
ret = qemuMonitorBlockJobCancel(qemuDomainGetMonitor(vm), device);
if (qemuDomainObjExitMonitor(driver, vm) < 0) {
ret = -1;
goto endjob;
}
if (ret < 0) {
if (disk->mirror)
disk->mirrorState = VIR_DOMAIN_DISK_MIRROR_STATE_NONE;
goto endjob;
}
}
/* If we have made changes to XML due to a copy job, make a best
* effort to save it now. But we can ignore failure, since there
* will be further changes when the event marks completion. */
if (save)
ignore_value(virDomainSaveStatus(driver->xmlopt, cfg->stateDir, vm, driver->caps));
/*
* With the ABORT_ASYNC flag we don't need to do anything, the event will
* come from qemu and will update the XML as appropriate, but without the
* ABORT_ASYNC flag, we must block to guarantee synchronous operation. We
* do the waiting while still holding the VM job, to prevent newly
* scheduled block jobs from confusing us. */
if (!async) {
qemuBlockJobUpdateDisk(vm, QEMU_ASYNC_JOB_NONE, disk);
while (qemuBlockJobIsRunning(job)) {
if (virDomainObjWait(vm) < 0) {
ret = -1;
goto endjob;
}
qemuBlockJobUpdateDisk(vm, QEMU_ASYNC_JOB_NONE, disk);
}
}
endjob:
if (disk)
qemuBlockJobSyncEndDisk(vm, QEMU_ASYNC_JOB_NONE, disk);
qemuDomainObjEndJob(driver, vm);
cleanup:
virObjectUnref(job);
virObjectUnref(cfg);
VIR_FREE(device);
virDomainObjEndAPI(&vm);
return ret;
}
static int
qemuBlockJobInfoTranslate(qemuMonitorBlockJobInfoPtr rawInfo,
virDomainBlockJobInfoPtr info,
virDomainDiskDefPtr disk,
bool reportBytes)
{
info->cur = rawInfo->cur;
info->end = rawInfo->end;
/* Fix job completeness reporting. If cur == end mgmt
* applications think job is completed. Except when both cur
* and end are zero, in which case qemu hasn't started the
* job yet. */
if (!info->cur && !info->end) {
if (rawInfo->ready > 0) {
info->cur = info->end = 1;
} else if (!rawInfo->ready) {
info->end = 1;
}
}
info->type = rawInfo->type;
if (info->type == VIR_DOMAIN_BLOCK_JOB_TYPE_COMMIT &&
disk->mirrorJob == VIR_DOMAIN_BLOCK_JOB_TYPE_ACTIVE_COMMIT)
info->type = disk->mirrorJob;
if (rawInfo->bandwidth && !reportBytes)
rawInfo->bandwidth = VIR_DIV_UP(rawInfo->bandwidth, 1024 * 1024);
info->bandwidth = rawInfo->bandwidth;
if (info->bandwidth != rawInfo->bandwidth) {
virReportError(VIR_ERR_OVERFLOW,
_("bandwidth %llu cannot be represented in result"),
rawInfo->bandwidth);
return -1;
}
return 0;
}
static int
qemuDomainGetBlockJobInfo(virDomainPtr dom,
const char *path,
virDomainBlockJobInfoPtr info,
unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
virDomainObjPtr vm;
virDomainDiskDefPtr disk;
int ret = -1;
qemuMonitorBlockJobInfo rawInfo;
virCheckFlags(VIR_DOMAIN_BLOCK_JOB_INFO_BANDWIDTH_BYTES, -1);
if (!(vm = qemuDomObjFromDomain(dom)))
return -1;
if (virDomainGetBlockJobInfoEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_QUERY) < 0)
goto cleanup;
if (virDomainObjCheckActive(vm) < 0)
goto endjob;
if (qemuDomainSupportsBlockJobs(vm) < 0)
goto endjob;
if (!(disk = virDomainDiskByName(vm->def, path, true))) {
virReportError(VIR_ERR_INVALID_ARG,
_("disk %s not found in the domain"), path);
goto endjob;
}
qemuDomainObjEnterMonitor(driver, vm);
ret = qemuMonitorGetBlockJobInfo(qemuDomainGetMonitor(vm),
disk->info.alias, &rawInfo);
if (qemuDomainObjExitMonitor(driver, vm) < 0)
ret = -1;
if (ret <= 0)
goto endjob;
if (qemuBlockJobInfoTranslate(&rawInfo, info, disk,
flags & VIR_DOMAIN_BLOCK_JOB_INFO_BANDWIDTH_BYTES) < 0) {
ret = -1;
goto endjob;
}
/* Snoop block copy operations, so future cancel operations can
* avoid checking if pivot is safe. Save the change to XML, but
* we can ignore failure because it is only an optimization. We
* hold the vm lock, so modifying the in-memory representation is
* safe, even if we are a query rather than a modify job. */
if (disk->mirror &&
rawInfo.ready != 0 &&
info->cur == info->end && !disk->mirrorState) {
virQEMUDriverConfigPtr cfg = virQEMUDriverGetConfig(driver);
disk->mirrorState = VIR_DOMAIN_DISK_MIRROR_STATE_READY;
ignore_value(virDomainSaveStatus(driver->xmlopt, cfg->stateDir, vm, driver->caps));
virObjectUnref(cfg);
}
endjob:
qemuDomainObjEndJob(driver, vm);
cleanup:
virDomainObjEndAPI(&vm);
return ret;
}
static int
qemuDomainBlockJobSetSpeed(virDomainPtr dom,
const char *path,
unsigned long bandwidth,
unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
virDomainDiskDefPtr disk;
int ret = -1;
virDomainObjPtr vm;
char *device = NULL;
unsigned long long speed = bandwidth;
virCheckFlags(VIR_DOMAIN_BLOCK_JOB_SPEED_BANDWIDTH_BYTES, -1);
/* Convert bandwidth MiB to bytes, if needed */
if (!(flags & VIR_DOMAIN_BLOCK_JOB_SPEED_BANDWIDTH_BYTES)) {
if (speed > LLONG_MAX >> 20) {
virReportError(VIR_ERR_OVERFLOW,
_("bandwidth must be less than %llu"),
LLONG_MAX >> 20);
return -1;
}
speed <<= 20;
}
if (!(vm = qemuDomObjFromDomain(dom)))
return -1;
if (virDomainBlockJobSetSpeedEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_MODIFY) < 0)
goto cleanup;
if (virDomainObjCheckActive(vm) < 0)
goto endjob;
if (qemuDomainSupportsBlockJobs(vm) < 0)
goto endjob;
if (!(disk = qemuDomainDiskByName(vm->def, path)))
goto endjob;
if (!(device = qemuAliasDiskDriveFromDisk(disk)))
goto endjob;
qemuDomainObjEnterMonitor(driver, vm);
ret = qemuMonitorBlockJobSetSpeed(qemuDomainGetMonitor(vm),
device,
speed);
if (qemuDomainObjExitMonitor(driver, vm) < 0)
ret = -1;
endjob:
qemuDomainObjEndJob(driver, vm);
cleanup:
VIR_FREE(device);
virDomainObjEndAPI(&vm);
return ret;
}
static int
qemuDomainBlockCopyValidateMirror(virStorageSourcePtr mirror,
const char *dst,
bool *reuse)
{
int desttype = virStorageSourceGetActualType(mirror);
struct stat st;
if (virStorageFileAccess(mirror, F_OK) < 0) {
if (errno != ENOENT) {
virReportSystemError(errno, "%s",
_("unable to verify existence of "
"block copy target"));
return -1;
}
if (*reuse || desttype == VIR_STORAGE_TYPE_BLOCK) {
virReportSystemError(errno,
_("missing destination file for disk %s: %s"),
dst, mirror->path);
return -1;
}
} else {
if (virStorageFileStat(mirror, &st) < 0) {
virReportSystemError(errno,
_("unable to stat block copy target '%s'"),
mirror->path);
return -1;
}
if (S_ISBLK(st.st_mode)) {
/* if the target is a block device, assume that we are reusing it,
* so there are no attempts to create it */
*reuse = true;
} else {
if (st.st_size && !(*reuse)) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("external destination file for disk %s already "
"exists and is not a block device: %s"),
dst, mirror->path);
return -1;
}
if (desttype == VIR_STORAGE_TYPE_BLOCK) {
virReportError(VIR_ERR_INVALID_ARG,
_("blockdev flag requested for disk %s, but file "
"'%s' is not a block device"),
dst, mirror->path);
return -1;
}
}
}
return 0;
}
/* bandwidth in bytes/s. Caller must lock vm beforehand, and not
* access mirror afterwards. */
static int
qemuDomainBlockCopyCommon(virDomainObjPtr vm,
virConnectPtr conn,
const char *path,
virStorageSourcePtr mirror,
unsigned long long bandwidth,
unsigned int granularity,
unsigned long long buf_size,
unsigned int flags,
bool keepParentLabel)
{
virQEMUDriverPtr driver = conn->privateData;
qemuDomainObjPrivatePtr priv;
char *device = NULL;
virDomainDiskDefPtr disk = NULL;
int ret = -1;
bool need_unlink = false;
virQEMUDriverConfigPtr cfg = NULL;
const char *format = NULL;
virErrorPtr monitor_error = NULL;
bool reuse = !!(flags & VIR_DOMAIN_BLOCK_COPY_REUSE_EXT);
qemuBlockJobDataPtr job = NULL;
/* Preliminaries: find the disk we are editing, sanity checks */
virCheckFlags(VIR_DOMAIN_BLOCK_COPY_SHALLOW |
VIR_DOMAIN_BLOCK_COPY_REUSE_EXT |
VIR_DOMAIN_BLOCK_COPY_TRANSIENT_JOB, -1);
priv = vm->privateData;
cfg = virQEMUDriverGetConfig(driver);
if (virStorageSourceIsRelative(mirror)) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("absolute path must be used as block copy target"));
goto cleanup;
}
if (bandwidth > LLONG_MAX) {
virReportError(VIR_ERR_INVALID_ARG,
_("bandwidth must be less than "
"'%llu' bytes/s (%llu MiB/s)"),
LLONG_MAX, LLONG_MAX >> 20);
goto cleanup;
}
if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_MODIFY) < 0)
goto cleanup;
if (virDomainObjCheckActive(vm) < 0)
goto endjob;
if (!(disk = qemuDomainDiskByName(vm->def, path)))
goto endjob;
if (!(device = qemuAliasDiskDriveFromDisk(disk)))
goto endjob;
if (qemuDomainDiskBlockJobIsActive(disk))
goto endjob;
if (disk->device == VIR_DOMAIN_DISK_DEVICE_LUN &&
qemuDomainDefValidateDiskLunSource(mirror) < 0)
goto endjob;
if (!(virQEMUCapsGet(priv->qemuCaps, QEMU_CAPS_DRIVE_MIRROR) &&
virQEMUCapsGet(priv->qemuCaps, QEMU_CAPS_BLOCKJOB_ASYNC))) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("block copy is not supported with this QEMU binary"));
goto endjob;
}
if (!(flags & VIR_DOMAIN_BLOCK_COPY_TRANSIENT_JOB) &&
vm->persistent) {
/* XXX if qemu ever lets us start a new domain with mirroring
* already active, we can relax this; but for now, the risk of
* 'managedsave' due to libvirt-guests means we can't risk
* this on persistent domains. */
virReportError(VIR_ERR_OPERATION_INVALID, "%s",
_("domain is not transient"));
goto endjob;
}
/* clear the _SHALLOW flag if there is only one layer */
if (!virStorageSourceHasBacking(disk->src))
flags &= ~VIR_DOMAIN_BLOCK_COPY_SHALLOW;
/* unless the user provides a pre-created file, shallow copy into a raw
* file is not possible */
if ((flags & VIR_DOMAIN_BLOCK_COPY_SHALLOW) && !reuse &&
mirror->format == VIR_STORAGE_FILE_RAW) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("shallow copy of disk '%s' into a raw file "
"is not possible"),
disk->dst);
goto endjob;
}
/* Prepare the destination file. */
/* XXX Allow non-file mirror destinations */
if (!virStorageSourceIsLocalStorage(mirror)) {
virReportError(VIR_ERR_ARGUMENT_UNSUPPORTED, "%s",
_("non-file destination not supported yet"));
goto endjob;
}
if (qemuDomainStorageFileInit(driver, vm, mirror, NULL) < 0)
goto endjob;
if (qemuDomainBlockCopyValidateMirror(mirror, disk->dst, &reuse) < 0)
goto endjob;
if (!mirror->format) {
if (!(flags & VIR_DOMAIN_BLOCK_COPY_REUSE_EXT)) {
mirror->format = disk->src->format;
} else {
/* If the user passed the REUSE_EXT flag, then either they
* can also pass the RAW flag or use XML to tell us the format.
* So if we get here, we assume it is safe for us to probe the
* format from the file that we will be using. */
mirror->format = virStorageFileProbeFormat(mirror->path, cfg->user,
cfg->group);
}
}
/* pre-create the image file */
if (!reuse) {
if (virStorageFileCreate(mirror) < 0) {
virReportSystemError(errno, "%s", _("failed to create copy target"));
goto endjob;
}
need_unlink = true;
}
if (mirror->format > 0)
format = virStorageFileFormatTypeToString(mirror->format);
if (virStorageSourceInitChainElement(mirror, disk->src,
keepParentLabel) < 0)
goto endjob;
if (qemuDomainDiskChainElementPrepare(driver, vm, mirror, false, true) < 0) {
qemuDomainDiskChainElementRevoke(driver, vm, mirror);
goto endjob;
}
if (!(job = qemuBlockJobDiskNew(disk, QEMU_BLOCKJOB_TYPE_COPY)))
goto endjob;
/* Actually start the mirroring */
qemuDomainObjEnterMonitor(driver, vm);
/* qemuMonitorDriveMirror needs to honor the REUSE_EXT flag as specified
* by the user regardless of how @reuse was modified */
ret = qemuMonitorDriveMirror(priv->mon, device, mirror->path, format,
bandwidth, granularity, buf_size, flags);
virDomainAuditDisk(vm, NULL, mirror, "mirror", ret >= 0);
if (qemuDomainObjExitMonitor(driver, vm) < 0)
ret = -1;
if (ret < 0) {
monitor_error = virSaveLastError();
qemuDomainDiskChainElementRevoke(driver, vm, mirror);
goto endjob;
}
/* Update vm in place to match changes. */
qemuBlockJobStarted(job);
need_unlink = false;
virStorageFileDeinit(mirror);
disk->mirror = mirror;
mirror = NULL;
disk->mirrorJob = VIR_DOMAIN_BLOCK_JOB_TYPE_COPY;
if (virDomainSaveStatus(driver->xmlopt, cfg->stateDir, vm, driver->caps) < 0)
VIR_WARN("Unable to save status on vm %s after state change",
vm->def->name);
endjob:
if (need_unlink && virStorageFileUnlink(mirror) < 0)
VIR_WARN("%s", _("unable to remove just-created copy target"));
virStorageFileDeinit(mirror);
qemuDomainObjEndJob(driver, vm);
if (monitor_error) {
virSetError(monitor_error);
virFreeError(monitor_error);
}
qemuBlockJobStartupFinalize(job);
cleanup:
VIR_FREE(device);
virObjectUnref(cfg);
virStorageSourceFree(mirror);
return ret;
}
static int
qemuDomainBlockRebase(virDomainPtr dom, const char *path, const char *base,
unsigned long bandwidth, unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
virDomainObjPtr vm;
int ret = -1;
unsigned long long speed = bandwidth;
virStorageSourcePtr dest = NULL;
virCheckFlags(VIR_DOMAIN_BLOCK_REBASE_SHALLOW |
VIR_DOMAIN_BLOCK_REBASE_REUSE_EXT |
VIR_DOMAIN_BLOCK_REBASE_COPY |
VIR_DOMAIN_BLOCK_REBASE_COPY_RAW |
VIR_DOMAIN_BLOCK_REBASE_RELATIVE |
VIR_DOMAIN_BLOCK_REBASE_COPY_DEV |
VIR_DOMAIN_BLOCK_REBASE_BANDWIDTH_BYTES, -1);
if (!(vm = qemuDomObjFromDomain(dom)))
return -1;
if (virDomainBlockRebaseEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
/* For normal rebase (enhanced blockpull), the common code handles
* everything, including vm cleanup. */
if (!(flags & VIR_DOMAIN_BLOCK_REBASE_COPY))
return qemuDomainBlockPullCommon(driver, vm, path, base, bandwidth, flags);
/* If we got here, we are doing a block copy rebase. */
if (VIR_ALLOC(dest) < 0)
goto cleanup;
dest->type = (flags & VIR_DOMAIN_BLOCK_REBASE_COPY_DEV) ?
VIR_STORAGE_TYPE_BLOCK : VIR_STORAGE_TYPE_FILE;
if (VIR_STRDUP(dest->path, base) < 0)
goto cleanup;
if (flags & VIR_DOMAIN_BLOCK_REBASE_COPY_RAW)
dest->format = VIR_STORAGE_FILE_RAW;
/* Convert bandwidth MiB to bytes, if necessary */
if (!(flags & VIR_DOMAIN_BLOCK_REBASE_BANDWIDTH_BYTES)) {
if (speed > LLONG_MAX >> 20) {
virReportError(VIR_ERR_OVERFLOW,
_("bandwidth must be less than %llu"),
LLONG_MAX >> 20);
goto cleanup;
}
speed <<= 20;
}
/* XXX: If we are doing a shallow copy but not reusing an external
* file, we should attempt to pre-create the destination with a
* relative backing chain instead of qemu's default of absolute */
if (flags & VIR_DOMAIN_BLOCK_REBASE_RELATIVE) {
virReportError(VIR_ERR_ARGUMENT_UNSUPPORTED, "%s",
_("Relative backing during copy not supported yet"));
goto cleanup;
}
/* We rely on the fact that VIR_DOMAIN_BLOCK_REBASE_SHALLOW
* and VIR_DOMAIN_BLOCK_REBASE_REUSE_EXT map to the same values
* as for block copy. */
flags &= (VIR_DOMAIN_BLOCK_REBASE_SHALLOW |
VIR_DOMAIN_BLOCK_REBASE_REUSE_EXT);
ret = qemuDomainBlockCopyCommon(vm, dom->conn, path, dest,
speed, 0, 0, flags, true);
dest = NULL;
cleanup:
virDomainObjEndAPI(&vm);
virStorageSourceFree(dest);
return ret;
}
static int
qemuDomainBlockCopy(virDomainPtr dom, const char *disk, const char *destxml,
virTypedParameterPtr params, int nparams,
unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
virDomainObjPtr vm;
int ret = -1;
unsigned long long bandwidth = 0;
unsigned int granularity = 0;
unsigned long long buf_size = 0;
virDomainDiskDefPtr diskdef = NULL;
virStorageSourcePtr dest = NULL;
size_t i;
virCheckFlags(VIR_DOMAIN_BLOCK_COPY_SHALLOW |
VIR_DOMAIN_BLOCK_COPY_REUSE_EXT |
VIR_DOMAIN_BLOCK_COPY_TRANSIENT_JOB, -1);
if (virTypedParamsValidate(params, nparams,
VIR_DOMAIN_BLOCK_COPY_BANDWIDTH,
VIR_TYPED_PARAM_ULLONG,
VIR_DOMAIN_BLOCK_COPY_GRANULARITY,
VIR_TYPED_PARAM_UINT,
VIR_DOMAIN_BLOCK_COPY_BUF_SIZE,
VIR_TYPED_PARAM_ULLONG,
NULL) < 0)
return -1;
if (!(vm = qemuDomObjFromDomain(dom)))
return -1;
if (virDomainBlockCopyEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
for (i = 0; i < nparams; i++) {
virTypedParameterPtr param = ¶ms[i];
/* Typed params (wisely) refused to expose unsigned long, but
* back-compat demands that we stick with a maximum of
* unsigned long bandwidth in MiB/s, while our value is
* unsigned long long in bytes/s. Hence, we have to do
* overflow detection if this is a 32-bit server handling a
* 64-bit client. */
if (STREQ(param->field, VIR_DOMAIN_BLOCK_COPY_BANDWIDTH)) {
if (sizeof(unsigned long)< sizeof(bandwidth) &&
param->value.ul > ULONG_MAX * (1ULL << 20)) {
virReportError(VIR_ERR_OVERFLOW,
_("bandwidth must be less than %llu bytes"),
ULONG_MAX * (1ULL << 20));
goto cleanup;
}
bandwidth = param->value.ul;
} else if (STREQ(param->field, VIR_DOMAIN_BLOCK_COPY_GRANULARITY)) {
if (param->value.ui != VIR_ROUND_UP_POWER_OF_TWO(param->value.ui)) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("granularity must be power of 2"));
goto cleanup;
}
granularity = param->value.ui;
} else if (STREQ(param->field, VIR_DOMAIN_BLOCK_COPY_BUF_SIZE)) {
buf_size = param->value.ul;
}
}
if (!(diskdef = virDomainDiskDefParse(destxml, vm->def, driver->xmlopt,
VIR_DOMAIN_DEF_PARSE_INACTIVE |
VIR_DOMAIN_DEF_PARSE_DISK_SOURCE)))
goto cleanup;
VIR_STEAL_PTR(dest, diskdef->src);
ret = qemuDomainBlockCopyCommon(vm, dom->conn, disk, dest, bandwidth,
granularity, buf_size, flags, false);
cleanup:
virDomainDiskDefFree(diskdef);
virDomainObjEndAPI(&vm);
return ret;
}
static int
qemuDomainBlockPull(virDomainPtr dom, const char *path, unsigned long bandwidth,
unsigned int flags)
{
virDomainObjPtr vm;
virCheckFlags(VIR_DOMAIN_BLOCK_PULL_BANDWIDTH_BYTES, -1);
if (!(vm = qemuDomObjFromDomain(dom)))
return -1;
if (virDomainBlockPullEnsureACL(dom->conn, vm->def) < 0) {
virDomainObjEndAPI(&vm);
return -1;
}
return qemuDomainBlockPullCommon(dom->conn->privateData,
vm, path, NULL, bandwidth, flags);
}
static int
qemuDomainBlockCommit(virDomainPtr dom,
const char *path,
const char *base,
const char *top,
unsigned long bandwidth,
unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
virQEMUDriverConfigPtr cfg = NULL;
qemuDomainObjPrivatePtr priv;
virDomainObjPtr vm = NULL;
char *device = NULL;
int ret = -1;
virDomainDiskDefPtr disk = NULL;
virStorageSourcePtr topSource;
unsigned int topIndex = 0;
virStorageSourcePtr baseSource = NULL;
unsigned int baseIndex = 0;
virStorageSourcePtr top_parent = NULL;
bool clean_access = false;
char *topPath = NULL;
char *basePath = NULL;
char *backingPath = NULL;
virStorageSourcePtr mirror = NULL;
unsigned long long speed = bandwidth;
qemuBlockJobDataPtr job = NULL;
qemuBlockJobType jobtype = QEMU_BLOCKJOB_TYPE_COMMIT;
/* XXX Add support for COMMIT_DELETE */
virCheckFlags(VIR_DOMAIN_BLOCK_COMMIT_SHALLOW |
VIR_DOMAIN_BLOCK_COMMIT_ACTIVE |
VIR_DOMAIN_BLOCK_COMMIT_RELATIVE |
VIR_DOMAIN_BLOCK_COMMIT_BANDWIDTH_BYTES, -1);
if (!(vm = qemuDomObjFromDomain(dom)))
goto cleanup;
priv = vm->privateData;
cfg = virQEMUDriverGetConfig(driver);
if (virDomainBlockCommitEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_MODIFY) < 0)
goto cleanup;
if (virDomainObjCheckActive(vm) < 0)
goto endjob;
/* Ensure that no one backports commit to RHEL 6.2, where cancel
* behaved differently */
if (!(virQEMUCapsGet(priv->qemuCaps, QEMU_CAPS_BLOCK_COMMIT) &&
virQEMUCapsGet(priv->qemuCaps, QEMU_CAPS_BLOCKJOB_ASYNC))) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("online commit not supported with this QEMU binary"));
goto endjob;
}
/* Convert bandwidth MiB to bytes, if necessary */
if (!(flags & VIR_DOMAIN_BLOCK_COMMIT_BANDWIDTH_BYTES)) {
if (speed > LLONG_MAX >> 20) {
virReportError(VIR_ERR_OVERFLOW,
_("bandwidth must be less than %llu"),
LLONG_MAX >> 20);
goto endjob;
}
speed <<= 20;
}
if (!(disk = qemuDomainDiskByName(vm->def, path)))
goto endjob;
if (!(device = qemuAliasDiskDriveFromDisk(disk)))
goto endjob;
if (!disk->src->path) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("disk %s has no source file to be committed"),
disk->dst);
goto endjob;
}
if (qemuDomainDiskBlockJobIsActive(disk))
goto endjob;
if (!top || STREQ(top, disk->dst))
topSource = disk->src;
else if (virStorageFileParseChainIndex(disk->dst, top, &topIndex) < 0 ||
!(topSource = virStorageFileChainLookup(disk->src, NULL,
top, topIndex,
&top_parent)))
goto endjob;
if (topSource == disk->src) {
if (!virQEMUCapsGet(priv->qemuCaps, QEMU_CAPS_ACTIVE_COMMIT)) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("active commit not supported with this QEMU binary"));
goto endjob;
}
/* XXX Should we auto-pivot when COMMIT_ACTIVE is not specified? */
if (!(flags & VIR_DOMAIN_BLOCK_COMMIT_ACTIVE)) {
virReportError(VIR_ERR_INVALID_ARG,
_("commit of '%s' active layer requires active flag"),
disk->dst);
goto endjob;
}
} else if (flags & VIR_DOMAIN_BLOCK_COMMIT_ACTIVE) {
virReportError(VIR_ERR_INVALID_ARG,
_("active commit requested but '%s' is not active"),
topSource->path);
goto endjob;
}
if (!virStorageSourceHasBacking(topSource)) {
virReportError(VIR_ERR_INVALID_ARG,
_("top '%s' in chain for '%s' has no backing file"),
topSource->path, path);
goto endjob;
}
if (!base && (flags & VIR_DOMAIN_BLOCK_COMMIT_SHALLOW))
baseSource = topSource->backingStore;
else if (virStorageFileParseChainIndex(disk->dst, base, &baseIndex) < 0 ||
!(baseSource = virStorageFileChainLookup(disk->src, topSource,
base, baseIndex, NULL)))
goto endjob;
if ((flags & VIR_DOMAIN_BLOCK_COMMIT_SHALLOW) &&
baseSource != topSource->backingStore) {
virReportError(VIR_ERR_INVALID_ARG,
_("base '%s' is not immediately below '%s' in chain "
"for '%s'"),
base, topSource->path, path);
goto endjob;
}
/* For an active commit, clone enough of the base to act as the mirror */
if (topSource == disk->src) {
if (!(mirror = virStorageSourceCopy(baseSource, false)))
goto endjob;
if (virStorageSourceInitChainElement(mirror,
disk->src,
true) < 0)
goto endjob;
}
if (flags & VIR_DOMAIN_BLOCK_COMMIT_RELATIVE &&
topSource != disk->src) {
if (!virQEMUCapsGet(priv->qemuCaps, QEMU_CAPS_CHANGE_BACKING_FILE)) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("this qemu doesn't support relative block commit"));
goto endjob;
}
if (virStorageFileGetRelativeBackingPath(topSource, baseSource,
&backingPath) < 0)
goto endjob;
if (!backingPath) {
virReportError(VIR_ERR_OPERATION_INVALID, "%s",
_("can't keep relative backing relationship"));
goto endjob;
}
}
/* For the commit to succeed, we must allow qemu to open both the
* 'base' image and the parent of 'top' as read/write; 'top' might
* not have a parent, or might already be read-write. XXX It
* would also be nice to revert 'base' to read-only, as well as
* revoke access to files removed from the chain, when the commit
* operation succeeds, but doing that requires tracking the
* operation in XML across libvirtd restarts. */
clean_access = true;
if (qemuDomainDiskChainElementPrepare(driver, vm, baseSource, false, false) < 0 ||
(top_parent && top_parent != disk->src &&
qemuDomainDiskChainElementPrepare(driver, vm, top_parent, false, false) < 0))
goto endjob;
/* Start the commit operation. Pass the user's original spelling,
* if any, through to qemu, since qemu may behave differently
* depending on whether the input was specified as relative or
* absolute (that is, our absolute top_canon may do the wrong
* thing if the user specified a relative name). Be prepared for
* a ready event to occur while locks are dropped. */
if (mirror) {
disk->mirrorState = VIR_DOMAIN_DISK_MIRROR_STATE_NONE;
disk->mirror = mirror;
disk->mirrorJob = VIR_DOMAIN_BLOCK_JOB_TYPE_ACTIVE_COMMIT;
jobtype = QEMU_BLOCKJOB_TYPE_ACTIVE_COMMIT;
}
if (!(job = qemuBlockJobDiskNew(disk, jobtype)))
goto endjob;
qemuDomainObjEnterMonitor(driver, vm);
basePath = qemuMonitorDiskNameLookup(priv->mon, device, disk->src,
baseSource);
topPath = qemuMonitorDiskNameLookup(priv->mon, device, disk->src,
topSource);
if (basePath && topPath)
ret = qemuMonitorBlockCommit(priv->mon, device,
topPath, basePath, backingPath,
speed);
if (qemuDomainObjExitMonitor(driver, vm) < 0) {
ret = -1;
goto endjob;
}
if (ret == 0) {
qemuBlockJobStarted(job);
mirror = NULL;
} else {
disk->mirror = NULL;
disk->mirrorJob = VIR_DOMAIN_BLOCK_JOB_TYPE_UNKNOWN;
}
if (virDomainSaveStatus(driver->xmlopt, cfg->stateDir, vm, driver->caps) < 0)
VIR_WARN("Unable to save status on vm %s after block job",
vm->def->name);
endjob:
if (ret < 0 && clean_access) {
virErrorPtr orig_err = virSaveLastError();
/* Revert access to read-only, if possible. */
qemuDomainDiskChainElementPrepare(driver, vm, baseSource, true, false);
if (top_parent && top_parent != disk->src)
qemuDomainDiskChainElementPrepare(driver, vm, top_parent, true, false);
if (orig_err) {
virSetError(orig_err);
virFreeError(orig_err);
}
}
virStorageSourceFree(mirror);
qemuBlockJobStartupFinalize(job);
qemuDomainObjEndJob(driver, vm);
cleanup:
VIR_FREE(topPath);
VIR_FREE(basePath);
VIR_FREE(backingPath);
VIR_FREE(device);
virObjectUnref(cfg);
virDomainObjEndAPI(&vm);
return ret;
}
static int
qemuDomainOpenGraphics(virDomainPtr dom,
unsigned int idx,
int fd,
unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
virDomainObjPtr vm = NULL;
int ret = -1;
qemuDomainObjPrivatePtr priv;
const char *protocol;
virCheckFlags(VIR_DOMAIN_OPEN_GRAPHICS_SKIPAUTH, -1);
if (!(vm = qemuDomObjFromDomain(dom)))
return -1;
if (virDomainOpenGraphicsEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_MODIFY) < 0)
goto cleanup;
if (virDomainObjCheckActive(vm) < 0)
goto endjob;
priv = vm->privateData;
if (idx >= vm->def->ngraphics) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("No graphics backend with index %d"), idx);
goto endjob;
}
switch (vm->def->graphics[idx]->type) {
case VIR_DOMAIN_GRAPHICS_TYPE_VNC:
protocol = "vnc";
break;
case VIR_DOMAIN_GRAPHICS_TYPE_SPICE:
protocol = "spice";
break;
case VIR_DOMAIN_GRAPHICS_TYPE_SDL:
case VIR_DOMAIN_GRAPHICS_TYPE_RDP:
case VIR_DOMAIN_GRAPHICS_TYPE_DESKTOP:
case VIR_DOMAIN_GRAPHICS_TYPE_EGL_HEADLESS:
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("Can only open VNC or SPICE graphics backends, not %s"),
virDomainGraphicsTypeToString(vm->def->graphics[idx]->type));
goto endjob;
case VIR_DOMAIN_GRAPHICS_TYPE_LAST:
default:
virReportEnumRangeError(virDomainGraphicsType,
vm->def->graphics[idx]->type);
goto endjob;
}
if (qemuSecuritySetImageFDLabel(driver->securityManager, vm->def, fd) < 0)
goto endjob;
qemuDomainObjEnterMonitor(driver, vm);
ret = qemuMonitorOpenGraphics(priv->mon, protocol, fd, "graphicsfd",
(flags & VIR_DOMAIN_OPEN_GRAPHICS_SKIPAUTH) != 0);
if (qemuDomainObjExitMonitor(driver, vm) < 0)
ret = -1;
endjob:
qemuDomainObjEndJob(driver, vm);
cleanup:
virDomainObjEndAPI(&vm);
return ret;
}
static int
qemuDomainOpenGraphicsFD(virDomainPtr dom,
unsigned int idx,
unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
virDomainObjPtr vm = NULL;
int ret = -1;
qemuDomainObjPrivatePtr priv;
const char *protocol;
int pair[2] = {-1, -1};
virCheckFlags(VIR_DOMAIN_OPEN_GRAPHICS_SKIPAUTH, -1);
if (!(vm = qemuDomObjFromDomain(dom)))
return -1;
if (virDomainOpenGraphicsFdEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
if (virDomainObjCheckActive(vm) < 0)
goto cleanup;
priv = vm->privateData;
if (idx >= vm->def->ngraphics) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("No graphics backend with index %d"), idx);
goto cleanup;
}
switch (vm->def->graphics[idx]->type) {
case VIR_DOMAIN_GRAPHICS_TYPE_VNC:
protocol = "vnc";
break;
case VIR_DOMAIN_GRAPHICS_TYPE_SPICE:
protocol = "spice";
break;
case VIR_DOMAIN_GRAPHICS_TYPE_SDL:
case VIR_DOMAIN_GRAPHICS_TYPE_RDP:
case VIR_DOMAIN_GRAPHICS_TYPE_DESKTOP:
case VIR_DOMAIN_GRAPHICS_TYPE_EGL_HEADLESS:
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("Can only open VNC or SPICE graphics backends, not %s"),
virDomainGraphicsTypeToString(vm->def->graphics[idx]->type));
goto cleanup;
case VIR_DOMAIN_GRAPHICS_TYPE_LAST:
default:
virReportEnumRangeError(virDomainGraphicsType,
vm->def->graphics[idx]->type);
goto cleanup;
}
if (qemuSecuritySetSocketLabel(driver->securityManager, vm->def) < 0)
goto cleanup;
if (socketpair(PF_UNIX, SOCK_STREAM, 0, pair) < 0)
goto cleanup;
if (qemuSecurityClearSocketLabel(driver->securityManager, vm->def) < 0)
goto cleanup;
if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_MODIFY) < 0)
goto cleanup;
qemuDomainObjEnterMonitor(driver, vm);
ret = qemuMonitorOpenGraphics(priv->mon, protocol, pair[1], "graphicsfd",
(flags & VIR_DOMAIN_OPEN_GRAPHICS_SKIPAUTH));
if (qemuDomainObjExitMonitor(driver, vm) < 0)
ret = -1;
qemuDomainObjEndJob(driver, vm);
if (ret < 0)
goto cleanup;
ret = pair[0];
pair[0] = -1;
cleanup:
VIR_FORCE_CLOSE(pair[0]);
VIR_FORCE_CLOSE(pair[1]);
virDomainObjEndAPI(&vm);
return ret;
}
typedef enum {
QEMU_BLOCK_IOTUNE_SET_BYTES = 1 << 0,
QEMU_BLOCK_IOTUNE_SET_IOPS = 1 << 1,
QEMU_BLOCK_IOTUNE_SET_BYTES_MAX = 1 << 2,
QEMU_BLOCK_IOTUNE_SET_IOPS_MAX = 1 << 3,
QEMU_BLOCK_IOTUNE_SET_SIZE_IOPS = 1 << 4,
QEMU_BLOCK_IOTUNE_SET_GROUP_NAME = 1 << 5,
QEMU_BLOCK_IOTUNE_SET_BYTES_MAX_LENGTH = 1 << 6,
QEMU_BLOCK_IOTUNE_SET_IOPS_MAX_LENGTH = 1 << 7,
} qemuBlockIoTuneSetFlags;
/* If the user didn't specify bytes limits, inherit previous values;
* likewise if the user didn't specify iops limits. */
static int
qemuDomainSetBlockIoTuneDefaults(virDomainBlockIoTuneInfoPtr newinfo,
virDomainBlockIoTuneInfoPtr oldinfo,
qemuBlockIoTuneSetFlags set_fields)
{
#define SET_IOTUNE_DEFAULTS(BOOL, FIELD) \
if (!(set_fields & QEMU_BLOCK_IOTUNE_SET_##BOOL)) { \
newinfo->total_##FIELD = oldinfo->total_##FIELD; \
newinfo->read_##FIELD = oldinfo->read_##FIELD; \
newinfo->write_##FIELD = oldinfo->write_##FIELD; \
}
SET_IOTUNE_DEFAULTS(BYTES, bytes_sec);
SET_IOTUNE_DEFAULTS(BYTES_MAX, bytes_sec_max);
SET_IOTUNE_DEFAULTS(IOPS, iops_sec);
SET_IOTUNE_DEFAULTS(IOPS_MAX, iops_sec_max);
#undef SET_IOTUNE_DEFAULTS
if (!(set_fields & QEMU_BLOCK_IOTUNE_SET_SIZE_IOPS))
newinfo->size_iops_sec = oldinfo->size_iops_sec;
if (!(set_fields & QEMU_BLOCK_IOTUNE_SET_GROUP_NAME) &&
VIR_STRDUP(newinfo->group_name, oldinfo->group_name) < 0)
return -1;
/* The length field is handled a bit differently. If not defined/set,
* QEMU will default these to 0 or 1 depending on whether something in
* the same family is set or not.
*
* Similar to other values, if nothing in the family is defined/set,
* then take whatever is in the oldinfo.
*
* To clear an existing limit, a 0 is provided; however, passing that
* 0 onto QEMU if there's a family value defined/set (or defaulted)
* will cause an error. So, to mimic that, if our oldinfo was set and
* our newinfo is clearing, then set max_length based on whether we
* have a value in the family set/defined. */
#define SET_MAX_LENGTH(BOOL, FIELD) \
if (!(set_fields & QEMU_BLOCK_IOTUNE_SET_##BOOL)) \
newinfo->FIELD##_max_length = oldinfo->FIELD##_max_length; \
else if ((set_fields & QEMU_BLOCK_IOTUNE_SET_##BOOL) && \
oldinfo->FIELD##_max_length && \
!newinfo->FIELD##_max_length) \
newinfo->FIELD##_max_length = (newinfo->FIELD || \
newinfo->FIELD##_max) ? 1 : 0;
SET_MAX_LENGTH(BYTES_MAX_LENGTH, total_bytes_sec);
SET_MAX_LENGTH(BYTES_MAX_LENGTH, read_bytes_sec);
SET_MAX_LENGTH(BYTES_MAX_LENGTH, write_bytes_sec);
SET_MAX_LENGTH(IOPS_MAX_LENGTH, total_iops_sec);
SET_MAX_LENGTH(IOPS_MAX_LENGTH, read_iops_sec);
SET_MAX_LENGTH(IOPS_MAX_LENGTH, write_iops_sec);
#undef SET_MAX_LENGTH
return 0;
}
static int
qemuDomainSetBlockIoTune(virDomainPtr dom,
const char *path,
virTypedParameterPtr params,
int nparams,
unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
virDomainObjPtr vm = NULL;
qemuDomainObjPrivatePtr priv;
virDomainDefPtr def = NULL;
virDomainDefPtr persistentDef = NULL;
virDomainBlockIoTuneInfo info;
char *drivealias = NULL;
const char *qdevid = NULL;
int ret = -1;
size_t i;
virDomainDiskDefPtr conf_disk = NULL;
virDomainDiskDefPtr disk;
qemuBlockIoTuneSetFlags set_fields = 0;
bool supportMaxOptions = true;
bool supportGroupNameOption = true;
bool supportMaxLengthOptions = true;
virQEMUDriverConfigPtr cfg = NULL;
virObjectEventPtr event = NULL;
virTypedParameterPtr eventParams = NULL;
int eventNparams = 0;
int eventMaxparams = 0;
virCheckFlags(VIR_DOMAIN_AFFECT_LIVE |
VIR_DOMAIN_AFFECT_CONFIG, -1);
if (virTypedParamsValidate(params, nparams,
VIR_DOMAIN_BLOCK_IOTUNE_TOTAL_BYTES_SEC,
VIR_TYPED_PARAM_ULLONG,
VIR_DOMAIN_BLOCK_IOTUNE_READ_BYTES_SEC,
VIR_TYPED_PARAM_ULLONG,
VIR_DOMAIN_BLOCK_IOTUNE_WRITE_BYTES_SEC,
VIR_TYPED_PARAM_ULLONG,
VIR_DOMAIN_BLOCK_IOTUNE_TOTAL_IOPS_SEC,
VIR_TYPED_PARAM_ULLONG,
VIR_DOMAIN_BLOCK_IOTUNE_READ_IOPS_SEC,
VIR_TYPED_PARAM_ULLONG,
VIR_DOMAIN_BLOCK_IOTUNE_WRITE_IOPS_SEC,
VIR_TYPED_PARAM_ULLONG,
VIR_DOMAIN_BLOCK_IOTUNE_TOTAL_BYTES_SEC_MAX,
VIR_TYPED_PARAM_ULLONG,
VIR_DOMAIN_BLOCK_IOTUNE_READ_BYTES_SEC_MAX,
VIR_TYPED_PARAM_ULLONG,
VIR_DOMAIN_BLOCK_IOTUNE_WRITE_BYTES_SEC_MAX,
VIR_TYPED_PARAM_ULLONG,
VIR_DOMAIN_BLOCK_IOTUNE_TOTAL_IOPS_SEC_MAX,
VIR_TYPED_PARAM_ULLONG,
VIR_DOMAIN_BLOCK_IOTUNE_READ_IOPS_SEC_MAX,
VIR_TYPED_PARAM_ULLONG,
VIR_DOMAIN_BLOCK_IOTUNE_WRITE_IOPS_SEC_MAX,
VIR_TYPED_PARAM_ULLONG,
VIR_DOMAIN_BLOCK_IOTUNE_SIZE_IOPS_SEC,
VIR_TYPED_PARAM_ULLONG,
VIR_DOMAIN_BLOCK_IOTUNE_GROUP_NAME,
VIR_TYPED_PARAM_STRING,
VIR_DOMAIN_BLOCK_IOTUNE_TOTAL_BYTES_SEC_MAX_LENGTH,
VIR_TYPED_PARAM_ULLONG,
VIR_DOMAIN_BLOCK_IOTUNE_READ_BYTES_SEC_MAX_LENGTH,
VIR_TYPED_PARAM_ULLONG,
VIR_DOMAIN_BLOCK_IOTUNE_WRITE_BYTES_SEC_MAX_LENGTH,
VIR_TYPED_PARAM_ULLONG,
VIR_DOMAIN_BLOCK_IOTUNE_TOTAL_IOPS_SEC_MAX_LENGTH,
VIR_TYPED_PARAM_ULLONG,
VIR_DOMAIN_BLOCK_IOTUNE_READ_IOPS_SEC_MAX_LENGTH,
VIR_TYPED_PARAM_ULLONG,
VIR_DOMAIN_BLOCK_IOTUNE_WRITE_IOPS_SEC_MAX_LENGTH,
VIR_TYPED_PARAM_ULLONG,
NULL) < 0)
return -1;
memset(&info, 0, sizeof(info));
if (!(vm = qemuDomObjFromDomain(dom)))
return -1;
if (virDomainSetBlockIoTuneEnsureACL(dom->conn, vm->def, flags) < 0)
goto cleanup;
cfg = virQEMUDriverGetConfig(driver);
if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_MODIFY) < 0)
goto cleanup;
priv = vm->privateData;
if (virDomainObjGetDefs(vm, flags, &def, &persistentDef) < 0)
goto endjob;
if (virTypedParamsAddString(&eventParams, &eventNparams, &eventMaxparams,
VIR_DOMAIN_TUNABLE_BLKDEV_DISK, path) < 0)
goto endjob;
#define SET_IOTUNE_FIELD(FIELD, BOOL, CONST) \
if (STREQ(param->field, VIR_DOMAIN_BLOCK_IOTUNE_##CONST)) { \
info.FIELD = param->value.ul; \
set_fields |= QEMU_BLOCK_IOTUNE_SET_##BOOL; \
if (virTypedParamsAddULLong(&eventParams, &eventNparams, \
&eventMaxparams, \
VIR_DOMAIN_TUNABLE_BLKDEV_##CONST, \
param->value.ul) < 0) \
goto endjob; \
continue; \
}
for (i = 0; i < nparams; i++) {
virTypedParameterPtr param = ¶ms[i];
if (param->value.ul > QEMU_BLOCK_IOTUNE_MAX) {
virReportError(VIR_ERR_ARGUMENT_UNSUPPORTED,
_("block I/O throttle limit value must"
" be no more than %llu"), QEMU_BLOCK_IOTUNE_MAX);
goto endjob;
}
SET_IOTUNE_FIELD(total_bytes_sec, BYTES, TOTAL_BYTES_SEC);
SET_IOTUNE_FIELD(read_bytes_sec, BYTES, READ_BYTES_SEC);
SET_IOTUNE_FIELD(write_bytes_sec, BYTES, WRITE_BYTES_SEC);
SET_IOTUNE_FIELD(total_iops_sec, IOPS, TOTAL_IOPS_SEC);
SET_IOTUNE_FIELD(read_iops_sec, IOPS, READ_IOPS_SEC);
SET_IOTUNE_FIELD(write_iops_sec, IOPS, WRITE_IOPS_SEC);
SET_IOTUNE_FIELD(total_bytes_sec_max, BYTES_MAX,
TOTAL_BYTES_SEC_MAX);
SET_IOTUNE_FIELD(read_bytes_sec_max, BYTES_MAX,
READ_BYTES_SEC_MAX);
SET_IOTUNE_FIELD(write_bytes_sec_max, BYTES_MAX,
WRITE_BYTES_SEC_MAX);
SET_IOTUNE_FIELD(total_iops_sec_max, IOPS_MAX,
TOTAL_IOPS_SEC_MAX);
SET_IOTUNE_FIELD(read_iops_sec_max, IOPS_MAX,
READ_IOPS_SEC_MAX);
SET_IOTUNE_FIELD(write_iops_sec_max, IOPS_MAX,
WRITE_IOPS_SEC_MAX);
SET_IOTUNE_FIELD(size_iops_sec, SIZE_IOPS, SIZE_IOPS_SEC);
/* NB: Cannot use macro since this is a value.s not a value.ul */
if (STREQ(param->field, VIR_DOMAIN_BLOCK_IOTUNE_GROUP_NAME)) {
if (VIR_STRDUP(info.group_name, param->value.s) < 0)
goto endjob;
set_fields |= QEMU_BLOCK_IOTUNE_SET_GROUP_NAME;
if (virTypedParamsAddString(&eventParams, &eventNparams,
&eventMaxparams,
VIR_DOMAIN_TUNABLE_BLKDEV_GROUP_NAME,
param->value.s) < 0)
goto endjob;
continue;
}
SET_IOTUNE_FIELD(total_bytes_sec_max_length, BYTES_MAX_LENGTH,
TOTAL_BYTES_SEC_MAX_LENGTH);
SET_IOTUNE_FIELD(read_bytes_sec_max_length, BYTES_MAX_LENGTH,
READ_BYTES_SEC_MAX_LENGTH);
SET_IOTUNE_FIELD(write_bytes_sec_max_length, BYTES_MAX_LENGTH,
WRITE_BYTES_SEC_MAX_LENGTH);
SET_IOTUNE_FIELD(total_iops_sec_max_length, IOPS_MAX_LENGTH,
TOTAL_IOPS_SEC_MAX_LENGTH);
SET_IOTUNE_FIELD(read_iops_sec_max_length, IOPS_MAX_LENGTH,
READ_IOPS_SEC_MAX_LENGTH);
SET_IOTUNE_FIELD(write_iops_sec_max_length, IOPS_MAX_LENGTH,
WRITE_IOPS_SEC_MAX_LENGTH);
}
#undef SET_IOTUNE_FIELD
if ((info.total_bytes_sec && info.read_bytes_sec) ||
(info.total_bytes_sec && info.write_bytes_sec)) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("total and read/write of bytes_sec "
"cannot be set at the same time"));
goto endjob;
}
if ((info.total_iops_sec && info.read_iops_sec) ||
(info.total_iops_sec && info.write_iops_sec)) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("total and read/write of iops_sec "
"cannot be set at the same time"));
goto endjob;
}
if ((info.total_bytes_sec_max && info.read_bytes_sec_max) ||
(info.total_bytes_sec_max && info.write_bytes_sec_max)) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("total and read/write of bytes_sec_max "
"cannot be set at the same time"));
goto endjob;
}
if ((info.total_iops_sec_max && info.read_iops_sec_max) ||
(info.total_iops_sec_max && info.write_iops_sec_max)) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("total and read/write of iops_sec_max "
"cannot be set at the same time"));
goto endjob;
}
if (def) {
supportMaxOptions = virQEMUCapsGet(priv->qemuCaps,
QEMU_CAPS_DRIVE_IOTUNE_MAX);
supportGroupNameOption = virQEMUCapsGet(priv->qemuCaps,
QEMU_CAPS_DRIVE_IOTUNE_GROUP);
supportMaxLengthOptions =
virQEMUCapsGet(priv->qemuCaps, QEMU_CAPS_DRIVE_IOTUNE_MAX_LENGTH);
if (!supportMaxOptions &&
(set_fields & (QEMU_BLOCK_IOTUNE_SET_BYTES_MAX |
QEMU_BLOCK_IOTUNE_SET_IOPS_MAX |
QEMU_BLOCK_IOTUNE_SET_SIZE_IOPS))) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("a block I/O throttling parameter is not "
"supported with this QEMU binary"));
goto endjob;
}
if (!supportGroupNameOption &&
(set_fields & QEMU_BLOCK_IOTUNE_SET_GROUP_NAME)) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("the block I/O throttling group parameter is not "
"supported with this QEMU binary"));
goto endjob;
}
if (!supportMaxLengthOptions &&
(set_fields & (QEMU_BLOCK_IOTUNE_SET_BYTES_MAX_LENGTH |
QEMU_BLOCK_IOTUNE_SET_IOPS_MAX_LENGTH))) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("a block I/O throttling length parameter is not "
"supported with this QEMU binary"));
goto endjob;
}
if (!(disk = qemuDomainDiskByName(def, path)))
goto endjob;
if (virQEMUCapsGet(priv->qemuCaps, QEMU_CAPS_BLOCKDEV)) {
qdevid = QEMU_DOMAIN_DISK_PRIVATE(disk)->qomName;
} else {
if (!(drivealias = qemuAliasDiskDriveFromDisk(disk)))
goto endjob;
}
if (qemuDomainSetBlockIoTuneDefaults(&info, &disk->blkdeviotune,
set_fields) < 0)
goto endjob;
#define CHECK_MAX(val, _bool) \
do { \
if (info.val##_max) { \
if (!info.val) { \
if (QEMU_BLOCK_IOTUNE_SET_##_bool) { \
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, \
_("cannot reset '%s' when " \
"'%s' is set"), \
#val, #val "_max"); \
} else { \
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, \
_("value '%s' cannot be set if " \
"'%s' is not set"), \
#val "_max", #val); \
} \
goto endjob; \
} \
if (info.val##_max < info.val) { \
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, \
_("value '%s' cannot be " \
"smaller than '%s'"), \
#val "_max", #val); \
goto endjob; \
} \
} \
} while (false)
CHECK_MAX(total_bytes_sec, BYTES);
CHECK_MAX(read_bytes_sec, BYTES);
CHECK_MAX(write_bytes_sec, BYTES);
CHECK_MAX(total_iops_sec, IOPS);
CHECK_MAX(read_iops_sec, IOPS);
CHECK_MAX(write_iops_sec, IOPS);
#undef CHECK_MAX
/* NB: Let's let QEMU decide how to handle issues with _length
* via the JSON error code from the block_set_io_throttle call */
qemuDomainObjEnterMonitor(driver, vm);
ret = qemuMonitorSetBlockIoThrottle(priv->mon, drivealias, qdevid,
&info, supportMaxOptions,
set_fields & QEMU_BLOCK_IOTUNE_SET_GROUP_NAME,
supportMaxLengthOptions);
if (qemuDomainObjExitMonitor(driver, vm) < 0)
ret = -1;
if (ret < 0)
goto endjob;
ret = -1;
if (virDomainDiskSetBlockIOTune(disk, &info) < 0)
goto endjob;
if (virDomainSaveStatus(driver->xmlopt, cfg->stateDir,
vm, driver->caps) < 0)
goto endjob;
if (eventNparams) {
event = virDomainEventTunableNewFromDom(dom, eventParams, eventNparams);
eventNparams = 0;
virObjectEventStateQueue(driver->domainEventState, event);
}
}
if (persistentDef) {
if (!(conf_disk = virDomainDiskByName(persistentDef, path, true))) {
virReportError(VIR_ERR_INVALID_ARG,
_("missing persistent configuration for disk '%s'"),
path);
goto endjob;
}
if (qemuDomainSetBlockIoTuneDefaults(&info, &conf_disk->blkdeviotune,
set_fields) < 0)
goto endjob;
if (virDomainDiskSetBlockIOTune(conf_disk, &info) < 0)
goto endjob;
if (virDomainSaveConfig(cfg->configDir, driver->caps,
persistentDef) < 0)
goto endjob;
}
ret = 0;
endjob:
qemuDomainObjEndJob(driver, vm);
cleanup:
VIR_FREE(info.group_name);
VIR_FREE(drivealias);
virDomainObjEndAPI(&vm);
if (eventNparams)
virTypedParamsFree(eventParams, eventNparams);
virObjectUnref(cfg);
return ret;
}
static int
qemuDomainGetBlockIoTune(virDomainPtr dom,
const char *path,
virTypedParameterPtr params,
int *nparams,
unsigned int flags)
{
virDomainDiskDefPtr disk;
virQEMUDriverPtr driver = dom->conn->privateData;
virDomainObjPtr vm = NULL;
qemuDomainObjPrivatePtr priv = NULL;
virDomainDefPtr def = NULL;
virDomainDefPtr persistentDef = NULL;
virDomainBlockIoTuneInfo reply = {0};
char *drivealias = NULL;
const char *qdevid = NULL;
int ret = -1;
int maxparams;
virCheckFlags(VIR_DOMAIN_AFFECT_LIVE |
VIR_DOMAIN_AFFECT_CONFIG |
VIR_TYPED_PARAM_STRING_OKAY, -1);
/* We don't return strings, and thus trivially support this flag. */
flags &= ~VIR_TYPED_PARAM_STRING_OKAY;
if (!(vm = qemuDomObjFromDomain(dom)))
return -1;
priv = vm->privateData;
if (virDomainGetBlockIoTuneEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_QUERY) < 0)
goto cleanup;
/* the API check guarantees that only one of the definitions will be set */
if (virDomainObjGetDefs(vm, flags, &def, &persistentDef) < 0)
goto endjob;
if (def) {
/* If the VM is running, we can check if the current VM can use
* optional parameters or not. */
maxparams = QEMU_NB_BLOCK_IO_TUNE_BASE_PARAMS;
if (virQEMUCapsGet(priv->qemuCaps, QEMU_CAPS_DRIVE_IOTUNE_MAX))
maxparams += QEMU_NB_BLOCK_IO_TUNE_MAX_PARAMS;
if (virQEMUCapsGet(priv->qemuCaps, QEMU_CAPS_DRIVE_IOTUNE_GROUP))
maxparams += QEMU_NB_BLOCK_IO_TUNE_GROUP_PARAMS;
if (virQEMUCapsGet(priv->qemuCaps, QEMU_CAPS_DRIVE_IOTUNE_MAX_LENGTH))
maxparams += QEMU_NB_BLOCK_IO_TUNE_LENGTH_PARAMS;
} else {
maxparams = QEMU_NB_BLOCK_IO_TUNE_ALL_PARAMS;
}
if (*nparams == 0) {
*nparams = maxparams;
ret = 0;
goto endjob;
} else if (*nparams < maxparams) {
maxparams = *nparams;
}
*nparams = 0;
if (def) {
if (!(disk = qemuDomainDiskByName(def, path)))
goto endjob;
if (virQEMUCapsGet(priv->qemuCaps, QEMU_CAPS_BLOCKDEV)) {
qdevid = QEMU_DOMAIN_DISK_PRIVATE(disk)->qomName;
} else {
if (!(drivealias = qemuAliasDiskDriveFromDisk(disk)))
goto endjob;
}
qemuDomainObjEnterMonitor(driver, vm);
ret = qemuMonitorGetBlockIoThrottle(priv->mon, drivealias, qdevid, &reply);
if (qemuDomainObjExitMonitor(driver, vm) < 0)
goto endjob;
if (ret < 0)
goto endjob;
}
if (persistentDef) {
if (!(disk = virDomainDiskByName(persistentDef, path, true))) {
virReportError(VIR_ERR_INVALID_ARG,
_("disk '%s' was not found in the domain config"),
path);
goto endjob;
}
reply = disk->blkdeviotune;
/* Group name needs to be copied since qemuMonitorGetBlockIoThrottle
* allocates it as well */
if (VIR_STRDUP(reply.group_name, disk->blkdeviotune.group_name) < 0)
goto endjob;
}
#define BLOCK_IOTUNE_ASSIGN(name, var) \
if (*nparams < maxparams && \
virTypedParameterAssign(¶ms[(*nparams)++], \
VIR_DOMAIN_BLOCK_IOTUNE_ ## name, \
VIR_TYPED_PARAM_ULLONG, \
reply.var) < 0) \
goto endjob
BLOCK_IOTUNE_ASSIGN(TOTAL_BYTES_SEC, total_bytes_sec);
BLOCK_IOTUNE_ASSIGN(READ_BYTES_SEC, read_bytes_sec);
BLOCK_IOTUNE_ASSIGN(WRITE_BYTES_SEC, write_bytes_sec);
BLOCK_IOTUNE_ASSIGN(TOTAL_IOPS_SEC, total_iops_sec);
BLOCK_IOTUNE_ASSIGN(READ_IOPS_SEC, read_iops_sec);
BLOCK_IOTUNE_ASSIGN(WRITE_IOPS_SEC, write_iops_sec);
BLOCK_IOTUNE_ASSIGN(TOTAL_BYTES_SEC_MAX, total_bytes_sec_max);
BLOCK_IOTUNE_ASSIGN(READ_BYTES_SEC_MAX, read_bytes_sec_max);
BLOCK_IOTUNE_ASSIGN(WRITE_BYTES_SEC_MAX, write_bytes_sec_max);
BLOCK_IOTUNE_ASSIGN(TOTAL_IOPS_SEC_MAX, total_iops_sec_max);
BLOCK_IOTUNE_ASSIGN(READ_IOPS_SEC_MAX, read_iops_sec_max);
BLOCK_IOTUNE_ASSIGN(WRITE_IOPS_SEC_MAX, write_iops_sec_max);
BLOCK_IOTUNE_ASSIGN(SIZE_IOPS_SEC, size_iops_sec);
if (*nparams < maxparams) {
if (virTypedParameterAssign(¶ms[(*nparams)++],
VIR_DOMAIN_BLOCK_IOTUNE_GROUP_NAME,
VIR_TYPED_PARAM_STRING,
reply.group_name) < 0)
goto endjob;
reply.group_name = NULL;
}
BLOCK_IOTUNE_ASSIGN(TOTAL_BYTES_SEC_MAX_LENGTH, total_bytes_sec_max_length);
BLOCK_IOTUNE_ASSIGN(READ_BYTES_SEC_MAX_LENGTH, read_bytes_sec_max_length);
BLOCK_IOTUNE_ASSIGN(WRITE_BYTES_SEC_MAX_LENGTH, write_bytes_sec_max_length);
BLOCK_IOTUNE_ASSIGN(TOTAL_IOPS_SEC_MAX_LENGTH, total_iops_sec_max_length);
BLOCK_IOTUNE_ASSIGN(READ_IOPS_SEC_MAX_LENGTH, read_iops_sec_max_length);
BLOCK_IOTUNE_ASSIGN(WRITE_IOPS_SEC_MAX_LENGTH, write_iops_sec_max_length);
#undef BLOCK_IOTUNE_ASSIGN
ret = 0;
endjob:
qemuDomainObjEndJob(driver, vm);
cleanup:
VIR_FREE(reply.group_name);
VIR_FREE(drivealias);
virDomainObjEndAPI(&vm);
return ret;
}
static int
qemuDomainGetDiskErrors(virDomainPtr dom,
virDomainDiskErrorPtr errors,
unsigned int nerrors,
unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
virDomainObjPtr vm = NULL;
qemuDomainObjPrivatePtr priv;
virHashTablePtr table = NULL;
bool blockdev = false;
int ret = -1;
size_t i;
int n = 0;
virCheckFlags(0, -1);
if (!(vm = qemuDomObjFromDomain(dom)))
goto cleanup;
priv = vm->privateData;
blockdev = virQEMUCapsGet(priv->qemuCaps, QEMU_CAPS_BLOCKDEV);
if (virDomainGetDiskErrorsEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_QUERY) < 0)
goto cleanup;
if (virDomainObjCheckActive(vm) < 0)
goto endjob;
if (!errors) {
ret = vm->def->ndisks;
goto endjob;
}
qemuDomainObjEnterMonitor(driver, vm);
table = qemuMonitorGetBlockInfo(priv->mon);
if (qemuDomainObjExitMonitor(driver, vm) < 0)
goto endjob;
if (!table)
goto endjob;
for (i = n = 0; i < vm->def->ndisks; i++) {
struct qemuDomainDiskInfo *info;
virDomainDiskDefPtr disk = vm->def->disks[i];
qemuDomainDiskPrivatePtr diskPriv = QEMU_DOMAIN_DISK_PRIVATE(disk);
const char *entryname = disk->info.alias;
if (blockdev)
entryname = diskPriv->qomName;
if ((info = virHashLookup(table, entryname)) &&
info->io_status != VIR_DOMAIN_DISK_ERROR_NONE) {
if (n == nerrors)
break;
if (VIR_STRDUP(errors[n].disk, disk->dst) < 0)
goto endjob;
errors[n].error = info->io_status;
n++;
}
}
ret = n;
endjob:
qemuDomainObjEndJob(driver, vm);
cleanup:
virDomainObjEndAPI(&vm);
virHashFree(table);
if (ret < 0) {
for (i = 0; i < n; i++)
VIR_FREE(errors[i].disk);
}
return ret;
}
static int
qemuDomainSetMetadata(virDomainPtr dom,
int type,
const char *metadata,
const char *key,
const char *uri,
unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
virDomainObjPtr vm;
virQEMUDriverConfigPtr cfg = NULL;
virCapsPtr caps = NULL;
int ret = -1;
virCheckFlags(VIR_DOMAIN_AFFECT_LIVE |
VIR_DOMAIN_AFFECT_CONFIG, -1);
if (!(vm = qemuDomObjFromDomain(dom)))
return -1;
cfg = virQEMUDriverGetConfig(driver);
if (virDomainSetMetadataEnsureACL(dom->conn, vm->def, flags) < 0)
goto cleanup;
if (!(caps = virQEMUDriverGetCapabilities(driver, false)))
goto cleanup;
if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_MODIFY) < 0)
goto cleanup;
ret = virDomainObjSetMetadata(vm, type, metadata, key, uri, caps,
driver->xmlopt, cfg->stateDir,
cfg->configDir, flags);
if (ret == 0) {
virObjectEventPtr ev = NULL;
ev = virDomainEventMetadataChangeNewFromObj(vm, type, uri);
virObjectEventStateQueue(driver->domainEventState, ev);
}
qemuDomainObjEndJob(driver, vm);
cleanup:
virDomainObjEndAPI(&vm);
virObjectUnref(caps);
virObjectUnref(cfg);
return ret;
}
static char *
qemuDomainGetMetadata(virDomainPtr dom,
int type,
const char *uri,
unsigned int flags)
{
virDomainObjPtr vm;
char *ret = NULL;
if (!(vm = qemuDomObjFromDomain(dom)))
return NULL;
if (virDomainGetMetadataEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
ret = virDomainObjGetMetadata(vm, type, uri, flags);
cleanup:
virDomainObjEndAPI(&vm);
return ret;
}
static int
qemuDomainGetCPUStats(virDomainPtr domain,
virTypedParameterPtr params,
unsigned int nparams,
int start_cpu,
unsigned int ncpus,
unsigned int flags)
{
virDomainObjPtr vm = NULL;
int ret = -1;
qemuDomainObjPrivatePtr priv;
virBitmapPtr guestvcpus = NULL;
virCheckFlags(VIR_TYPED_PARAM_STRING_OKAY, -1);
if (!(vm = qemuDomObjFromDomain(domain)))
return -1;
priv = vm->privateData;
if (virDomainGetCPUStatsEnsureACL(domain->conn, vm->def) < 0)
goto cleanup;
if (virDomainObjCheckActive(vm) < 0)
goto cleanup;
if (!virCgroupHasController(priv->cgroup, VIR_CGROUP_CONTROLLER_CPUACCT)) {
virReportError(VIR_ERR_OPERATION_INVALID,
"%s", _("cgroup CPUACCT controller is not mounted"));
goto cleanup;
}
if (qemuDomainHasVcpuPids(vm) &&
!(guestvcpus = virDomainDefGetOnlineVcpumap(vm->def)))
goto cleanup;
if (start_cpu == -1)
ret = virCgroupGetDomainTotalCpuStats(priv->cgroup,
params, nparams);
else
ret = virCgroupGetPercpuStats(priv->cgroup, params, nparams,
start_cpu, ncpus, guestvcpus);
cleanup:
virBitmapFree(guestvcpus);
virDomainObjEndAPI(&vm);
return ret;
}
static int
qemuDomainPMSuspendForDuration(virDomainPtr dom,
unsigned int target,
unsigned long long duration,
unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
virDomainObjPtr vm;
qemuAgentPtr agent;
int ret = -1;
virCheckFlags(0, -1);
if (duration) {
virReportError(VIR_ERR_ARGUMENT_UNSUPPORTED, "%s",
_("Duration not supported. Use 0 for now"));
return -1;
}
if (!(target == VIR_NODE_SUSPEND_TARGET_MEM ||
target == VIR_NODE_SUSPEND_TARGET_DISK ||
target == VIR_NODE_SUSPEND_TARGET_HYBRID)) {
virReportError(VIR_ERR_INVALID_ARG,
_("Unknown suspend target: %u"),
target);
return -1;
}
if (!(vm = qemuDomObjFromDomain(dom)))
goto cleanup;
if (virDomainPMSuspendForDurationEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
if (qemuDomainObjBeginAgentJob(driver, vm, QEMU_AGENT_JOB_MODIFY) < 0)
goto cleanup;
if (virDomainObjCheckActive(vm) < 0)
goto endjob;
if (vm->def->pm.s3 || vm->def->pm.s4) {
if (vm->def->pm.s3 == VIR_TRISTATE_BOOL_NO &&
(target == VIR_NODE_SUSPEND_TARGET_MEM ||
target == VIR_NODE_SUSPEND_TARGET_HYBRID)) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("S3 state is disabled for this domain"));
goto endjob;
}
if (vm->def->pm.s4 == VIR_TRISTATE_BOOL_NO &&
target == VIR_NODE_SUSPEND_TARGET_DISK) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("S4 state is disabled for this domain"));
goto endjob;
}
}
if (!qemuDomainAgentAvailable(vm, true))
goto endjob;
agent = qemuDomainObjEnterAgent(vm);
ret = qemuAgentSuspend(agent, target);
qemuDomainObjExitAgent(vm, agent);
endjob:
qemuDomainObjEndAgentJob(vm);
cleanup:
virDomainObjEndAPI(&vm);
return ret;
}
static int
qemuDomainPMWakeup(virDomainPtr dom,
unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
virDomainObjPtr vm;
int ret = -1;
qemuDomainObjPrivatePtr priv;
virCheckFlags(0, -1);
if (!(vm = qemuDomObjFromDomain(dom)))
goto cleanup;
if (virDomainPMWakeupEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_MODIFY) < 0)
goto cleanup;
if (virDomainObjCheckActive(vm) < 0)
goto endjob;
priv = vm->privateData;
qemuDomainObjEnterMonitor(driver, vm);
ret = qemuMonitorSystemWakeup(priv->mon);
if (qemuDomainObjExitMonitor(driver, vm) < 0)
ret = -1;
endjob:
qemuDomainObjEndJob(driver, vm);
cleanup:
virDomainObjEndAPI(&vm);
return ret;
}
static int
qemuConnectListAllDomains(virConnectPtr conn,
virDomainPtr **domains,
unsigned int flags)
{
virQEMUDriverPtr driver = conn->privateData;
int ret = -1;
virCheckFlags(VIR_CONNECT_LIST_DOMAINS_FILTERS_ALL, -1);
if (virConnectListAllDomainsEnsureACL(conn) < 0)
goto cleanup;
ret = virDomainObjListExport(driver->domains, conn, domains,
virConnectListAllDomainsCheckACL, flags);
cleanup:
return ret;
}
static char *
qemuDomainQemuAgentCommand(virDomainPtr domain,
const char *cmd,
int timeout,
unsigned int flags)
{
virQEMUDriverPtr driver = domain->conn->privateData;
virDomainObjPtr vm;
int ret = -1;
char *result = NULL;
qemuAgentPtr agent;
virCheckFlags(0, NULL);
if (!(vm = qemuDomObjFromDomain(domain)))
goto cleanup;
if (virDomainQemuAgentCommandEnsureACL(domain->conn, vm->def) < 0)
goto cleanup;
if (qemuDomainObjBeginAgentJob(driver, vm, QEMU_AGENT_JOB_MODIFY) < 0)
goto cleanup;
if (virDomainObjCheckActive(vm) < 0)
goto endjob;
if (!qemuDomainAgentAvailable(vm, true))
goto endjob;
qemuDomainObjTaint(driver, vm, VIR_DOMAIN_TAINT_CUSTOM_GA_COMMAND, NULL);
agent = qemuDomainObjEnterAgent(vm);
ret = qemuAgentArbitraryCommand(agent, cmd, &result, timeout);
qemuDomainObjExitAgent(vm, agent);
if (ret < 0)
VIR_FREE(result);
endjob:
qemuDomainObjEndAgentJob(vm);
cleanup:
virDomainObjEndAPI(&vm);
return result;
}
static int
qemuConnectDomainQemuMonitorEventRegister(virConnectPtr conn,
virDomainPtr dom,
const char *event,
virConnectDomainQemuMonitorEventCallback callback,
void *opaque,
virFreeCallback freecb,
unsigned int flags)
{
virQEMUDriverPtr driver = conn->privateData;
int ret = -1;
if (virConnectDomainQemuMonitorEventRegisterEnsureACL(conn) < 0)
goto cleanup;
if (virDomainQemuMonitorEventStateRegisterID(conn,
driver->domainEventState,
dom, event, callback,
opaque, freecb, flags,
&ret) < 0)
ret = -1;
cleanup:
return ret;
}
static int
qemuConnectDomainQemuMonitorEventDeregister(virConnectPtr conn,
int callbackID)
{
virQEMUDriverPtr driver = conn->privateData;
int ret = -1;
if (virConnectDomainQemuMonitorEventDeregisterEnsureACL(conn) < 0)
goto cleanup;
if (virObjectEventStateDeregisterID(conn, driver->domainEventState,
callbackID, true) < 0)
goto cleanup;
ret = 0;
cleanup:
return ret;
}
static int
qemuDomainFSTrim(virDomainPtr dom,
const char *mountPoint,
unsigned long long minimum,
unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
virDomainObjPtr vm;
qemuAgentPtr agent;
int ret = -1;
virCheckFlags(0, -1);
if (mountPoint) {
virReportError(VIR_ERR_ARGUMENT_UNSUPPORTED, "%s",
_("Specifying mount point "
"is not supported for now"));
return -1;
}
if (!(vm = qemuDomObjFromDomain(dom)))
goto cleanup;
if (virDomainFSTrimEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
if (qemuDomainObjBeginAgentJob(driver, vm, QEMU_AGENT_JOB_MODIFY) < 0)
goto cleanup;
if (!qemuDomainAgentAvailable(vm, true))
goto endjob;
if (virDomainObjCheckActive(vm) < 0)
goto endjob;
agent = qemuDomainObjEnterAgent(vm);
ret = qemuAgentFSTrim(agent, minimum);
qemuDomainObjExitAgent(vm, agent);
endjob:
qemuDomainObjEndAgentJob(vm);
cleanup:
virDomainObjEndAPI(&vm);
return ret;
}
static int
qemuNodeGetInfo(virConnectPtr conn,
virNodeInfoPtr nodeinfo)
{
if (virNodeGetInfoEnsureACL(conn) < 0)
return -1;
return virCapabilitiesGetNodeInfo(nodeinfo);
}
static int
qemuNodeGetCPUStats(virConnectPtr conn,
int cpuNum,
virNodeCPUStatsPtr params,
int *nparams,
unsigned int flags)
{
if (virNodeGetCPUStatsEnsureACL(conn) < 0)
return -1;
return virHostCPUGetStats(cpuNum, params, nparams, flags);
}
static int
qemuNodeGetMemoryStats(virConnectPtr conn,
int cellNum,
virNodeMemoryStatsPtr params,
int *nparams,
unsigned int flags)
{
if (virNodeGetMemoryStatsEnsureACL(conn) < 0)
return -1;
return virHostMemGetStats(cellNum, params, nparams, flags);
}
static int
qemuNodeGetCellsFreeMemory(virConnectPtr conn,
unsigned long long *freeMems,
int startCell,
int maxCells)
{
if (virNodeGetCellsFreeMemoryEnsureACL(conn) < 0)
return -1;
return virHostMemGetCellsFree(freeMems, startCell, maxCells);
}
static unsigned long long
qemuNodeGetFreeMemory(virConnectPtr conn)
{
unsigned long long freeMem;
if (virNodeGetFreeMemoryEnsureACL(conn) < 0)
return 0;
if (virHostMemGetInfo(NULL, &freeMem) < 0)
return 0;
return freeMem;
}
static int
qemuNodeGetMemoryParameters(virConnectPtr conn,
virTypedParameterPtr params,
int *nparams,
unsigned int flags)
{
if (virNodeGetMemoryParametersEnsureACL(conn) < 0)
return -1;
return virHostMemGetParameters(params, nparams, flags);
}
static int
qemuNodeSetMemoryParameters(virConnectPtr conn,
virTypedParameterPtr params,
int nparams,
unsigned int flags)
{
if (virNodeSetMemoryParametersEnsureACL(conn) < 0)
return -1;
return virHostMemSetParameters(params, nparams, flags);
}
static int
qemuNodeGetCPUMap(virConnectPtr conn,
unsigned char **cpumap,
unsigned int *online,
unsigned int flags)
{
if (virNodeGetCPUMapEnsureACL(conn) < 0)
return -1;
return virHostCPUGetMap(cpumap, online, flags);
}
static int
qemuNodeSuspendForDuration(virConnectPtr conn,
unsigned int target,
unsigned long long duration,
unsigned int flags)
{
if (virNodeSuspendForDurationEnsureACL(conn) < 0)
return -1;
return virNodeSuspend(target, duration, flags);
}
static int
qemuConnectGetCPUModelNames(virConnectPtr conn,
const char *archName,
char ***models,
unsigned int flags)
{
virArch arch;
virCheckFlags(0, -1);
if (virConnectGetCPUModelNamesEnsureACL(conn) < 0)
return -1;
if (!(arch = virArchFromString(archName))) {
virReportError(VIR_ERR_INVALID_ARG,
_("cannot find architecture %s"),
archName);
return -1;
}
return virCPUGetModels(arch, models);
}
static char *
qemuDomainGetHostname(virDomainPtr dom,
unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
virDomainObjPtr vm = NULL;
qemuAgentPtr agent;
char *hostname = NULL;
virCheckFlags(0, NULL);
if (!(vm = qemuDomObjFromDomain(dom)))
return NULL;
if (virDomainGetHostnameEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
if (qemuDomainObjBeginAgentJob(driver, vm, QEMU_AGENT_JOB_QUERY) < 0)
goto cleanup;
if (virDomainObjCheckActive(vm) < 0)
goto endjob;
if (!qemuDomainAgentAvailable(vm, true))
goto endjob;
agent = qemuDomainObjEnterAgent(vm);
ignore_value(qemuAgentGetHostname(agent, &hostname));
qemuDomainObjExitAgent(vm, agent);
endjob:
qemuDomainObjEndAgentJob(vm);
cleanup:
virDomainObjEndAPI(&vm);
return hostname;
}
static int
qemuDomainGetTime(virDomainPtr dom,
long long *seconds,
unsigned int *nseconds,
unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
virDomainObjPtr vm = NULL;
qemuAgentPtr agent;
int ret = -1;
int rv;
virCheckFlags(0, ret);
if (!(vm = qemuDomObjFromDomain(dom)))
return ret;
if (virDomainGetTimeEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
if (qemuDomainObjBeginAgentJob(driver, vm, QEMU_AGENT_JOB_QUERY) < 0)
goto cleanup;
if (virDomainObjCheckActive(vm) < 0)
goto endjob;
if (!qemuDomainAgentAvailable(vm, true))
goto endjob;
agent = qemuDomainObjEnterAgent(vm);
rv = qemuAgentGetTime(agent, seconds, nseconds);
qemuDomainObjExitAgent(vm, agent);
if (rv < 0)
goto endjob;
ret = 0;
endjob:
qemuDomainObjEndAgentJob(vm);
cleanup:
virDomainObjEndAPI(&vm);
return ret;
}
static int
qemuDomainSetTime(virDomainPtr dom,
long long seconds,
unsigned int nseconds,
unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
qemuDomainObjPrivatePtr priv;
virDomainObjPtr vm;
qemuAgentPtr agent;
bool rtcSync = flags & VIR_DOMAIN_TIME_SYNC;
int ret = -1;
int rv;
virCheckFlags(VIR_DOMAIN_TIME_SYNC, ret);
if (!(vm = qemuDomObjFromDomain(dom)))
return ret;
if (virDomainSetTimeEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
priv = vm->privateData;
if (qemuDomainObjBeginJobWithAgent(driver, vm,
QEMU_JOB_MODIFY,
QEMU_AGENT_JOB_MODIFY) < 0)
goto cleanup;
if (virDomainObjCheckActive(vm) < 0)
goto endjob;
/* On x86, the rtc-reset-reinjection QMP command must be called after
* setting the time to avoid trouble down the line. If the command is
* not available, don't set the time at all and report an error */
if (ARCH_IS_X86(vm->def->os.arch) &&
!virQEMUCapsGet(priv->qemuCaps, QEMU_CAPS_RTC_RESET_REINJECTION))
{
virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s",
_("cannot set time: qemu doesn't support "
"rtc-reset-reinjection command"));
goto endjob;
}
if (!qemuDomainAgentAvailable(vm, true))
goto endjob;
agent = qemuDomainObjEnterAgent(vm);
rv = qemuAgentSetTime(agent, seconds, nseconds, rtcSync);
qemuDomainObjExitAgent(vm, agent);
if (rv < 0)
goto endjob;
if (virDomainObjCheckActive(vm) < 0)
goto endjob;
/* Don't try to call rtc-reset-reinjection if it's not available */
if (virQEMUCapsGet(priv->qemuCaps, QEMU_CAPS_RTC_RESET_REINJECTION)) {
qemuDomainObjEnterMonitor(driver, vm);
rv = qemuMonitorRTCResetReinjection(priv->mon);
if (qemuDomainObjExitMonitor(driver, vm) < 0)
goto endjob;
if (rv < 0)
goto endjob;
}
ret = 0;
endjob:
qemuDomainObjEndJobWithAgent(driver, vm);
cleanup:
virDomainObjEndAPI(&vm);
return ret;
}
static int
qemuDomainFSFreeze(virDomainPtr dom,
const char **mountpoints,
unsigned int nmountpoints,
unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
virDomainObjPtr vm;
int ret = -1;
virCheckFlags(0, -1);
if (!(vm = qemuDomObjFromDomain(dom)))
goto cleanup;
if (virDomainFSFreezeEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
if (qemuDomainObjBeginAgentJob(driver, vm, QEMU_AGENT_JOB_MODIFY) < 0)
goto cleanup;
if (virDomainObjCheckActive(vm) < 0)
goto endjob;
ret = qemuDomainSnapshotFSFreeze(driver, vm, mountpoints, nmountpoints);
endjob:
qemuDomainObjEndAgentJob(vm);
cleanup:
virDomainObjEndAPI(&vm);
return ret;
}
static int
qemuDomainFSThaw(virDomainPtr dom,
const char **mountpoints,
unsigned int nmountpoints,
unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
virDomainObjPtr vm;
int ret = -1;
virCheckFlags(0, -1);
if (mountpoints || nmountpoints) {
virReportError(VIR_ERR_ARGUMENT_UNSUPPORTED, "%s",
_("specifying mountpoints is not supported"));
return ret;
}
if (!(vm = qemuDomObjFromDomain(dom)))
goto cleanup;
if (virDomainFSThawEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
if (qemuDomainObjBeginAgentJob(driver, vm, QEMU_AGENT_JOB_MODIFY) < 0)
goto cleanup;
if (virDomainObjCheckActive(vm) < 0)
goto endjob;
ret = qemuDomainSnapshotFSThaw(driver, vm, true);
endjob:
qemuDomainObjEndAgentJob(vm);
cleanup:
virDomainObjEndAPI(&vm);
return ret;
}
static int
qemuNodeGetFreePages(virConnectPtr conn,
unsigned int npages,
unsigned int *pages,
int startCell,
unsigned int cellCount,
unsigned long long *counts,
unsigned int flags)
{
virCheckFlags(0, -1);
if (virNodeGetFreePagesEnsureACL(conn) < 0)
return -1;
return virHostMemGetFreePages(npages, pages, startCell, cellCount, counts);
}
static char *
qemuConnectGetDomainCapabilities(virConnectPtr conn,
const char *emulatorbin,
const char *arch_str,
const char *machine,
const char *virttype_str,
unsigned int flags)
{
char *ret = NULL;
virQEMUDriverPtr driver = conn->privateData;
virQEMUCapsPtr qemuCaps = NULL;
virArch arch;
virDomainVirtType virttype;
virDomainCapsPtr domCaps = NULL;
virQEMUDriverConfigPtr cfg = NULL;
virCapsPtr caps = NULL;
virCheckFlags(0, ret);
if (virConnectGetDomainCapabilitiesEnsureACL(conn) < 0)
return ret;
cfg = virQEMUDriverGetConfig(driver);
if (!(caps = virQEMUDriverGetCapabilities(driver, false)))
goto cleanup;
qemuCaps = virQEMUCapsCacheLookupDefault(driver->qemuCapsCache,
emulatorbin,
arch_str,
virttype_str,
machine,
&arch, &virttype, &machine);
if (!qemuCaps)
goto cleanup;
if (!(domCaps = virDomainCapsNew(virQEMUCapsGetBinary(qemuCaps), machine,
arch, virttype)))
goto cleanup;
if (virQEMUCapsFillDomainCaps(caps, domCaps, qemuCaps,
cfg->firmwares, cfg->nfirmwares) < 0)
goto cleanup;
ret = virDomainCapsFormat(domCaps);
cleanup:
virObjectUnref(cfg);
virObjectUnref(caps);
virObjectUnref(domCaps);
virObjectUnref(qemuCaps);
return ret;
}
static int
qemuDomainGetStatsState(virQEMUDriverPtr driver ATTRIBUTE_UNUSED,
virDomainObjPtr dom,
virDomainStatsRecordPtr record,
int *maxparams,
unsigned int privflags ATTRIBUTE_UNUSED)
{
if (virTypedParamsAddInt(&record->params,
&record->nparams,
maxparams,
"state.state",
dom->state.state) < 0)
return -1;
if (virTypedParamsAddInt(&record->params,
&record->nparams,
maxparams,
"state.reason",
dom->state.reason) < 0)
return -1;
return 0;
}
typedef enum {
QEMU_DOMAIN_STATS_HAVE_JOB = 1 << 0, /* job is entered, monitor can be
accessed */
QEMU_DOMAIN_STATS_BACKING = 1 << 1, /* include backing chain in
block stats */
} qemuDomainStatsFlags;
#define HAVE_JOB(flags) ((flags) & QEMU_DOMAIN_STATS_HAVE_JOB)
typedef struct _virQEMUResctrlMonData virQEMUResctrlMonData;
typedef virQEMUResctrlMonData *virQEMUResctrlMonDataPtr;
struct _virQEMUResctrlMonData {
char *name;
char *vcpus;
virResctrlMonitorStatsPtr *stats;
size_t nstats;
};
static void
qemuDomainFreeResctrlMonData(virQEMUResctrlMonDataPtr resdata)
{
VIR_FREE(resdata->name);
VIR_FREE(resdata->vcpus);
virResctrlMonitorFreeStats(resdata->stats, resdata->nstats);
VIR_FREE(resdata);
}
/**
* qemuDomainGetResctrlMonData:
* @dom: Pointer for the domain that the resctrl monitors reside in
* @resdata: Pointer of virQEMUResctrlMonDataPtr pointer for receiving the
* virQEMUResctrlMonDataPtr array. Caller is responsible for
* freeing the array.
* @nresdata: Pointer of size_t to report the size virQEMUResctrlMonDataPtr
* array to caller. If *@nresdata is not 0, even if function
* returns an error, the caller is also required to call
* qemuDomainFreeResctrlMonData to free each element in the
* *@resdata array and then the array itself.
* @tag: Could be VIR_RESCTRL_MONITOR_TYPE_CACHE for getting cache statistics
* from @dom cache monitors. VIR_RESCTRL_MONITOR_TYPE_MEMBW for
* getting memory bandwidth statistics from memory bandwidth monitors.
*
* Get cache or memory bandwidth statistics from @dom monitors.
*
* Returns -1 on failure, or 0 on success.
*/
static int
qemuDomainGetResctrlMonData(virDomainObjPtr dom,
virQEMUResctrlMonDataPtr **resdata,
size_t *nresdata,
virResctrlMonitorType tag)
{
virDomainResctrlDefPtr resctrl = NULL;
virQEMUResctrlMonDataPtr res = NULL;
size_t i = 0;
size_t j = 0;
for (i = 0; i < dom->def->nresctrls; i++) {
resctrl = dom->def->resctrls[i];
for (j = 0; j < resctrl->nmonitors; j++) {
virDomainResctrlMonDefPtr domresmon = NULL;
virResctrlMonitorPtr monitor = NULL;
domresmon = resctrl->monitors[j];
monitor = domresmon->instance;
if (domresmon->tag != tag)
continue;
if (VIR_ALLOC(res) < 0)
return -1;
/* If virBitmapFormat successfully returns an vcpu string, then
* res.vcpus is assigned with an memory space holding it,
* let this newly allocated memory buffer to be freed along with
* the free of 'res' */
if (!(res->vcpus = virBitmapFormat(domresmon->vcpus)))
goto error;
if (VIR_STRDUP(res->name, virResctrlMonitorGetID(monitor)) < 0)
goto error;
if (virResctrlMonitorGetCacheOccupancy(monitor,
&res->stats,
&res->nstats) < 0)
goto error;
if (VIR_APPEND_ELEMENT(*resdata, *nresdata, res) < 0)
goto error;
}
}
return 0;
error:
qemuDomainFreeResctrlMonData(res);
return -1;
}
static int
qemuDomainGetStatsCpuCache(virDomainObjPtr dom,
virDomainStatsRecordPtr record,
int *maxparams)
{
char param_name[VIR_TYPED_PARAM_FIELD_LENGTH];
virQEMUResctrlMonDataPtr *resdata = NULL;
size_t nresdata = 0;
size_t i = 0;
size_t j = 0;
int ret = -1;
if (!virDomainObjIsActive(dom))
return 0;
if (qemuDomainGetResctrlMonData(dom, &resdata, &nresdata,
VIR_RESCTRL_MONITOR_TYPE_CACHE) < 0)
goto cleanup;
snprintf(param_name, VIR_TYPED_PARAM_FIELD_LENGTH,
"cpu.cache.monitor.count");
if (virTypedParamsAddUInt(&record->params, &record->nparams,
maxparams, param_name, nresdata) < 0)
goto cleanup;
for (i = 0; i < nresdata; i++) {
snprintf(param_name, VIR_TYPED_PARAM_FIELD_LENGTH,
"cpu.cache.monitor.%zu.name", i);
if (virTypedParamsAddString(&record->params,
&record->nparams,
maxparams,
param_name,
resdata[i]->name) < 0)
goto cleanup;
snprintf(param_name, VIR_TYPED_PARAM_FIELD_LENGTH,
"cpu.cache.monitor.%zu.vcpus", i);
if (virTypedParamsAddString(&record->params, &record->nparams,
maxparams, param_name,
resdata[i]->vcpus) < 0)
goto cleanup;
snprintf(param_name, VIR_TYPED_PARAM_FIELD_LENGTH,
"cpu.cache.monitor.%zu.bank.count", i);
if (virTypedParamsAddUInt(&record->params, &record->nparams,
maxparams, param_name,
resdata[i]->nstats) < 0)
goto cleanup;
for (j = 0; j < resdata[i]->nstats; j++) {
snprintf(param_name, VIR_TYPED_PARAM_FIELD_LENGTH,
"cpu.cache.monitor.%zu.bank.%zu.id", i, j);
if (virTypedParamsAddUInt(&record->params, &record->nparams,
maxparams, param_name,
resdata[i]->stats[j]->id) < 0)
goto cleanup;
snprintf(param_name, VIR_TYPED_PARAM_FIELD_LENGTH,
"cpu.cache.monitor.%zu.bank.%zu.bytes", i, j);
if (virTypedParamsAddUInt(&record->params, &record->nparams,
maxparams, param_name,
resdata[i]->stats[j]->val) < 0)
goto cleanup;
}
}
ret = 0;
cleanup:
for (i = 0; i < nresdata; i++)
qemuDomainFreeResctrlMonData(resdata[i]);
VIR_FREE(resdata);
return ret;
}
static int
qemuDomainGetStatsCpuCgroup(virDomainObjPtr dom,
virDomainStatsRecordPtr record,
int *maxparams)
{
qemuDomainObjPrivatePtr priv = dom->privateData;
unsigned long long cpu_time = 0;
unsigned long long user_time = 0;
unsigned long long sys_time = 0;
int err = 0;
if (!priv->cgroup)
return 0;
err = virCgroupGetCpuacctUsage(priv->cgroup, &cpu_time);
if (!err && virTypedParamsAddULLong(&record->params,
&record->nparams,
maxparams,
"cpu.time",
cpu_time) < 0)
return -1;
err = virCgroupGetCpuacctStat(priv->cgroup, &user_time, &sys_time);
if (!err && virTypedParamsAddULLong(&record->params,
&record->nparams,
maxparams,
"cpu.user",
user_time) < 0)
return -1;
if (!err && virTypedParamsAddULLong(&record->params,
&record->nparams,
maxparams,
"cpu.system",
sys_time) < 0)
return -1;
return 0;
}
static int
qemuDomainGetStatsCpu(virQEMUDriverPtr driver ATTRIBUTE_UNUSED,
virDomainObjPtr dom,
virDomainStatsRecordPtr record,
int *maxparams,
unsigned int privflags ATTRIBUTE_UNUSED)
{
if (qemuDomainGetStatsCpuCgroup(dom, record, maxparams) < 0)
return -1;
if (qemuDomainGetStatsCpuCache(dom, record, maxparams) < 0)
return -1;
return 0;
}
static int
qemuDomainGetStatsBalloon(virQEMUDriverPtr driver,
virDomainObjPtr dom,
virDomainStatsRecordPtr record,
int *maxparams,
unsigned int privflags)
{
qemuDomainObjPrivatePtr priv = dom->privateData;
virDomainMemoryStatStruct stats[VIR_DOMAIN_MEMORY_STAT_NR];
int nr_stats;
unsigned long long cur_balloon = 0;
size_t i;
int err = 0;
if (!virDomainDefHasMemballoon(dom->def)) {
cur_balloon = virDomainDefGetMemoryTotal(dom->def);
} else if (virQEMUCapsGet(priv->qemuCaps, QEMU_CAPS_BALLOON_EVENT)) {
cur_balloon = dom->def->mem.cur_balloon;
} else {
err = -1;
}
if (!err && virTypedParamsAddULLong(&record->params,
&record->nparams,
maxparams,
"balloon.current",
cur_balloon) < 0)
return -1;
if (virTypedParamsAddULLong(&record->params,
&record->nparams,
maxparams,
"balloon.maximum",
virDomainDefGetMemoryTotal(dom->def)) < 0)
return -1;
if (!HAVE_JOB(privflags) || !virDomainObjIsActive(dom))
return 0;
nr_stats = qemuDomainMemoryStatsInternal(driver, dom, stats,
VIR_DOMAIN_MEMORY_STAT_NR);
if (nr_stats < 0)
return 0;
#define STORE_MEM_RECORD(TAG, NAME) \
if (stats[i].tag == VIR_DOMAIN_MEMORY_STAT_ ##TAG) \
if (virTypedParamsAddULLong(&record->params, \
&record->nparams, \
maxparams, \
"balloon." NAME, \
stats[i].val) < 0) \
return -1;
for (i = 0; i < nr_stats; i++) {
STORE_MEM_RECORD(SWAP_IN, "swap_in")
STORE_MEM_RECORD(SWAP_OUT, "swap_out")
STORE_MEM_RECORD(MAJOR_FAULT, "major_fault")
STORE_MEM_RECORD(MINOR_FAULT, "minor_fault")
STORE_MEM_RECORD(UNUSED, "unused")
STORE_MEM_RECORD(AVAILABLE, "available")
STORE_MEM_RECORD(RSS, "rss")
STORE_MEM_RECORD(LAST_UPDATE, "last-update")
STORE_MEM_RECORD(USABLE, "usable")
STORE_MEM_RECORD(DISK_CACHES, "disk_caches")
}
#undef STORE_MEM_RECORD
return 0;
}
static int
qemuDomainGetStatsVcpu(virQEMUDriverPtr driver,
virDomainObjPtr dom,
virDomainStatsRecordPtr record,
int *maxparams,
unsigned int privflags)
{
virDomainVcpuDefPtr vcpu;
qemuDomainVcpuPrivatePtr vcpupriv;
size_t i;
int ret = -1;
char param_name[VIR_TYPED_PARAM_FIELD_LENGTH];
virVcpuInfoPtr cpuinfo = NULL;
unsigned long long *cpuwait = NULL;
if (virTypedParamsAddUInt(&record->params,
&record->nparams,
maxparams,
"vcpu.current",
virDomainDefGetVcpus(dom->def)) < 0)
return -1;
if (virTypedParamsAddUInt(&record->params,
&record->nparams,
maxparams,
"vcpu.maximum",
virDomainDefGetVcpusMax(dom->def)) < 0)
return -1;
if (VIR_ALLOC_N(cpuinfo, virDomainDefGetVcpus(dom->def)) < 0 ||
VIR_ALLOC_N(cpuwait, virDomainDefGetVcpus(dom->def)) < 0)
goto cleanup;
if (HAVE_JOB(privflags) && virDomainObjIsActive(dom) &&
qemuDomainRefreshVcpuHalted(driver, dom, QEMU_ASYNC_JOB_NONE) < 0) {
/* it's ok to be silent and go ahead, because halted vcpu info
* wasn't here from the beginning */
virResetLastError();
}
if (qemuDomainHelperGetVcpus(dom, cpuinfo, cpuwait,
virDomainDefGetVcpus(dom->def),
NULL, 0) < 0) {
virResetLastError();
ret = 0; /* it's ok to be silent and go ahead */
goto cleanup;
}
for (i = 0; i < virDomainDefGetVcpus(dom->def); i++) {
snprintf(param_name, VIR_TYPED_PARAM_FIELD_LENGTH,
"vcpu.%u.state", cpuinfo[i].number);
if (virTypedParamsAddInt(&record->params,
&record->nparams,
maxparams,
param_name,
cpuinfo[i].state) < 0)
goto cleanup;
/* stats below are available only if the VM is alive */
if (!virDomainObjIsActive(dom))
continue;
snprintf(param_name, VIR_TYPED_PARAM_FIELD_LENGTH,
"vcpu.%u.time", cpuinfo[i].number);
if (virTypedParamsAddULLong(&record->params,
&record->nparams,
maxparams,
param_name,
cpuinfo[i].cpuTime) < 0)
goto cleanup;
snprintf(param_name, VIR_TYPED_PARAM_FIELD_LENGTH,
"vcpu.%u.wait", cpuinfo[i].number);
if (virTypedParamsAddULLong(&record->params,
&record->nparams,
maxparams,
param_name,
cpuwait[i]) < 0)
goto cleanup;
/* state below is extracted from the individual vcpu structs */
if (!(vcpu = virDomainDefGetVcpu(dom->def, cpuinfo[i].number)))
continue;
vcpupriv = QEMU_DOMAIN_VCPU_PRIVATE(vcpu);
if (vcpupriv->halted != VIR_TRISTATE_BOOL_ABSENT) {
snprintf(param_name, VIR_TYPED_PARAM_FIELD_LENGTH,
"vcpu.%u.halted", cpuinfo[i].number);
if (virTypedParamsAddBoolean(&record->params,
&record->nparams,
maxparams,
param_name,
vcpupriv->halted == VIR_TRISTATE_BOOL_YES) < 0)
goto cleanup;
}
}
ret = 0;
cleanup:
VIR_FREE(cpuinfo);
VIR_FREE(cpuwait);
return ret;
}
#define QEMU_ADD_COUNT_PARAM(record, maxparams, type, count) \
do { \
char param_name[VIR_TYPED_PARAM_FIELD_LENGTH]; \
snprintf(param_name, VIR_TYPED_PARAM_FIELD_LENGTH, "%s.count", type); \
if (virTypedParamsAddUInt(&(record)->params, \
&(record)->nparams, \
maxparams, \
param_name, \
count) < 0) \
goto cleanup; \
} while (0)
#define QEMU_ADD_NAME_PARAM(record, maxparams, type, subtype, num, name) \
do { \
char param_name[VIR_TYPED_PARAM_FIELD_LENGTH]; \
snprintf(param_name, VIR_TYPED_PARAM_FIELD_LENGTH, \
"%s.%zu.%s", type, num, subtype); \
if (virTypedParamsAddString(&(record)->params, \
&(record)->nparams, \
maxparams, \
param_name, \
name) < 0) \
goto cleanup; \
} while (0)
#define QEMU_ADD_NET_PARAM(record, maxparams, num, name, value) \
do { \
char param_name[VIR_TYPED_PARAM_FIELD_LENGTH]; \
snprintf(param_name, VIR_TYPED_PARAM_FIELD_LENGTH, \
"net.%zu.%s", num, name); \
if (value >= 0 && virTypedParamsAddULLong(&(record)->params, \
&(record)->nparams, \
maxparams, \
param_name, \
value) < 0) \
return -1; \
} while (0)
static int
qemuDomainGetStatsInterface(virQEMUDriverPtr driver ATTRIBUTE_UNUSED,
virDomainObjPtr dom,
virDomainStatsRecordPtr record,
int *maxparams,
unsigned int privflags ATTRIBUTE_UNUSED)
{
size_t i;
struct _virDomainInterfaceStats tmp;
int ret = -1;
if (!virDomainObjIsActive(dom))
return 0;
QEMU_ADD_COUNT_PARAM(record, maxparams, "net", dom->def->nnets);
/* Check the path is one of the domain's network interfaces. */
for (i = 0; i < dom->def->nnets; i++) {
virDomainNetDefPtr net = dom->def->nets[i];
virDomainNetType actualType;
if (!net->ifname)
continue;
memset(&tmp, 0, sizeof(tmp));
actualType = virDomainNetGetActualType(net);
QEMU_ADD_NAME_PARAM(record, maxparams,
"net", "name", i, net->ifname);
if (actualType == VIR_DOMAIN_NET_TYPE_VHOSTUSER) {
if (virNetDevOpenvswitchInterfaceStats(net->ifname, &tmp) < 0) {
virResetLastError();
continue;
}
} else {
if (virNetDevTapInterfaceStats(net->ifname, &tmp,
!virDomainNetTypeSharesHostView(net)) < 0) {
virResetLastError();
continue;
}
}
QEMU_ADD_NET_PARAM(record, maxparams, i,
"rx.bytes", tmp.rx_bytes);
QEMU_ADD_NET_PARAM(record, maxparams, i,
"rx.pkts", tmp.rx_packets);
QEMU_ADD_NET_PARAM(record, maxparams, i,
"rx.errs", tmp.rx_errs);
QEMU_ADD_NET_PARAM(record, maxparams, i,
"rx.drop", tmp.rx_drop);
QEMU_ADD_NET_PARAM(record, maxparams, i,
"tx.bytes", tmp.tx_bytes);
QEMU_ADD_NET_PARAM(record, maxparams, i,
"tx.pkts", tmp.tx_packets);
QEMU_ADD_NET_PARAM(record, maxparams, i,
"tx.errs", tmp.tx_errs);
QEMU_ADD_NET_PARAM(record, maxparams, i,
"tx.drop", tmp.tx_drop);
}
ret = 0;
cleanup:
return ret;
}
#undef QEMU_ADD_NET_PARAM
#define QEMU_ADD_BLOCK_PARAM_UI(record, maxparams, num, name, value) \
do { \
char param_name[VIR_TYPED_PARAM_FIELD_LENGTH]; \
snprintf(param_name, VIR_TYPED_PARAM_FIELD_LENGTH, \
"block.%zu.%s", num, name); \
if (virTypedParamsAddUInt(&(record)->params, \
&(record)->nparams, \
maxparams, \
param_name, \
value) < 0) \
goto cleanup; \
} while (0)
/* expects a LL, but typed parameter must be ULL */
#define QEMU_ADD_BLOCK_PARAM_LL(record, maxparams, num, name, value) \
do { \
char param_name[VIR_TYPED_PARAM_FIELD_LENGTH]; \
snprintf(param_name, VIR_TYPED_PARAM_FIELD_LENGTH, \
"block.%zu.%s", num, name); \
if (value >= 0 && virTypedParamsAddULLong(&(record)->params, \
&(record)->nparams, \
maxparams, \
param_name, \
value) < 0) \
goto cleanup; \
} while (0)
#define QEMU_ADD_BLOCK_PARAM_ULL(record, maxparams, num, name, value) \
do { \
char param_name[VIR_TYPED_PARAM_FIELD_LENGTH]; \
snprintf(param_name, VIR_TYPED_PARAM_FIELD_LENGTH, \
"block.%zu.%s", num, name); \
if (virTypedParamsAddULLong(&(record)->params, \
&(record)->nparams, \
maxparams, \
param_name, \
value) < 0) \
goto cleanup; \
} while (0)
/* refresh information by opening images on the disk */
static int
qemuDomainGetStatsOneBlockFallback(virQEMUDriverPtr driver,
virQEMUDriverConfigPtr cfg,
virDomainObjPtr dom,
virDomainStatsRecordPtr record,
int *maxparams,
virStorageSourcePtr src,
size_t block_idx)
{
int ret = -1;
if (virStorageSourceIsEmpty(src))
return 0;
if (qemuStorageLimitsRefresh(driver, cfg, dom, src) < 0) {
virResetLastError();
return 0;
}
if (src->allocation)
QEMU_ADD_BLOCK_PARAM_ULL(record, maxparams, block_idx,
"allocation", src->allocation);
if (src->capacity)
QEMU_ADD_BLOCK_PARAM_ULL(record, maxparams, block_idx,
"capacity", src->capacity);
if (src->physical)
QEMU_ADD_BLOCK_PARAM_ULL(record, maxparams, block_idx,
"physical", src->physical);
ret = 0;
cleanup:
return ret;
}
/**
* qemuDomainGetStatsOneBlockRefreshNamed:
* @src: disk source structure
* @alias: disk alias
* @stats: hash table containing stats for all disks
* @nodedata: reply containing 'query-named-block-nodes' data
*
* Refresh disk block stats data (qemuBlockStatsPtr) which are present only
* in the reply of 'query-named-block-nodes' in cases when the data was gathered
* by using query-block originally.
*/
static void
qemuDomainGetStatsOneBlockRefreshNamed(virStorageSourcePtr src,
const char *alias,
virHashTablePtr stats,
virHashTablePtr nodedata)
{
qemuBlockStatsPtr entry;
virJSONValuePtr data;
unsigned long long tmp;
if (!nodedata || !src->nodestorage)
return;
if (!(entry = virHashLookup(stats, alias)))
return;
if (!(data = virHashLookup(nodedata, src->nodestorage)))
return;
if (virJSONValueObjectGetNumberUlong(data, "write_threshold", &tmp) == 0)
entry->write_threshold = tmp;
}
static int
qemuDomainGetStatsOneBlock(virQEMUDriverPtr driver,
virQEMUDriverConfigPtr cfg,
virDomainObjPtr dom,
virDomainStatsRecordPtr record,
int *maxparams,
const char *entryname,
virStorageSourcePtr src,
size_t block_idx,
virHashTablePtr stats)
{
qemuBlockStats *entry;
int ret = -1;
/* the VM is offline so we have to go and load the stast from the disk by
* ourselves */
if (!virDomainObjIsActive(dom)) {
ret = qemuDomainGetStatsOneBlockFallback(driver, cfg, dom, record,
maxparams, src, block_idx);
goto cleanup;
}
/* In case where qemu didn't provide the stats we stop here rather than
* trying to refresh the stats from the disk. Inability to provide stats is
* usually caused by blocked storage so this would make libvirtd hang */
if (!stats || !entryname || !(entry = virHashLookup(stats, entryname))) {
ret = 0;
goto cleanup;
}
QEMU_ADD_BLOCK_PARAM_ULL(record, maxparams, block_idx,
"allocation", entry->wr_highest_offset);
if (entry->capacity)
QEMU_ADD_BLOCK_PARAM_ULL(record, maxparams, block_idx,
"capacity", entry->capacity);
if (entry->physical) {
QEMU_ADD_BLOCK_PARAM_ULL(record, maxparams, block_idx,
"physical", entry->physical);
} else {
if (qemuDomainStorageUpdatePhysical(driver, cfg, dom, src) == 0) {
QEMU_ADD_BLOCK_PARAM_ULL(record, maxparams, block_idx,
"physical", src->physical);
} else {
virResetLastError();
}
}
ret = 0;
cleanup:
return ret;
}
static int
qemuDomainGetStatsBlockExportBackendStorage(const char *entryname,
virHashTablePtr stats,
size_t recordnr,
virDomainStatsRecordPtr records,
int *nrecords)
{
qemuBlockStats *entry;
int ret = -1;
if (!stats || !entryname || !(entry = virHashLookup(stats, entryname))) {
ret = 0;
goto cleanup;
}
if (entry->write_threshold)
QEMU_ADD_BLOCK_PARAM_ULL(records, nrecords, recordnr, "threshold",
entry->write_threshold);
ret = 0;
cleanup:
return ret;
}
static int
qemuDomainGetStatsBlockExportFrontend(const char *frontendname,
virHashTablePtr stats,
size_t recordnr,
virDomainStatsRecordPtr records,
int *nrecords)
{
qemuBlockStats *entry;
int ret = -1;
/* In case where qemu didn't provide the stats we stop here rather than
* trying to refresh the stats from the disk. Inability to provide stats is
* usually caused by blocked storage so this would make libvirtd hang */
if (!stats || !frontendname || !(entry = virHashLookup(stats, frontendname))) {
ret = 0;
goto cleanup;
}
QEMU_ADD_BLOCK_PARAM_LL(records, nrecords, recordnr, "rd.reqs", entry->rd_req);
QEMU_ADD_BLOCK_PARAM_LL(records, nrecords, recordnr, "rd.bytes", entry->rd_bytes);
QEMU_ADD_BLOCK_PARAM_LL(records, nrecords, recordnr, "rd.times", entry->rd_total_times);
QEMU_ADD_BLOCK_PARAM_LL(records, nrecords, recordnr, "wr.reqs", entry->wr_req);
QEMU_ADD_BLOCK_PARAM_LL(records, nrecords, recordnr, "wr.bytes", entry->wr_bytes);
QEMU_ADD_BLOCK_PARAM_LL(records, nrecords, recordnr, "wr.times", entry->wr_total_times);
QEMU_ADD_BLOCK_PARAM_LL(records, nrecords, recordnr, "fl.reqs", entry->flush_req);
QEMU_ADD_BLOCK_PARAM_LL(records, nrecords, recordnr, "fl.times", entry->flush_total_times);
ret = 0;
cleanup:
return ret;
}
static int
qemuDomainGetStatsBlockExportHeader(virDomainDiskDefPtr disk,
virStorageSourcePtr src,
size_t recordnr,
virDomainStatsRecordPtr records,
int *nrecords)
{
int ret = -1;
QEMU_ADD_NAME_PARAM(records, nrecords, "block", "name", recordnr, disk->dst);
if (virStorageSourceIsLocalStorage(src) && src->path)
QEMU_ADD_NAME_PARAM(records, nrecords, "block", "path", recordnr, src->path);
if (src->id)
QEMU_ADD_BLOCK_PARAM_UI(records, nrecords, recordnr, "backingIndex",
src->id);
ret = 0;
cleanup:
return ret;
}
static int
qemuDomainGetStatsBlockExportDisk(virDomainDiskDefPtr disk,
virHashTablePtr stats,
virHashTablePtr nodestats,
virDomainStatsRecordPtr records,
int *nrecords,
size_t *recordnr,
bool visitBacking,
virQEMUDriverPtr driver,
virQEMUDriverConfigPtr cfg,
virDomainObjPtr dom,
bool blockdev)
{
char *alias = NULL;
virStorageSourcePtr n;
const char *frontendalias;
const char *backendalias;
const char *backendstoragealias;
int ret = -1;
/*
* This helps to keep logs clean from error messages on getting stats
* for optional disk with nonexistent source file. We won't get any
* stats for such a disk anyway in below code.
*/
if (!virDomainObjIsActive(dom) &&
qemuDomainDiskIsMissingLocalOptional(disk)) {
VIR_INFO("optional disk '%s' source file is missing, "
"skip getting stats", disk->dst);
return qemuDomainGetStatsBlockExportHeader(disk, disk->src, *recordnr,
records, nrecords);
}
for (n = disk->src; virStorageSourceIsBacking(n); n = n->backingStore) {
if (blockdev) {
frontendalias = QEMU_DOMAIN_DISK_PRIVATE(disk)->qomName;
backendalias = n->nodeformat;
backendstoragealias = n->nodestorage;
} else {
/* alias may be NULL if the VM is not running */
if (disk->info.alias &&
!(alias = qemuDomainStorageAlias(disk->info.alias, n->id)))
goto cleanup;
qemuDomainGetStatsOneBlockRefreshNamed(n, alias, stats, nodestats);
frontendalias = alias;
backendalias = alias;
backendstoragealias = alias;
}
if (qemuDomainGetStatsBlockExportHeader(disk, n, *recordnr,
records, nrecords) < 0)
goto cleanup;
/* The following stats make sense only for the frontend device */
if (n == disk->src) {
if (qemuDomainGetStatsBlockExportFrontend(frontendalias, stats, *recordnr,
records, nrecords) < 0)
goto cleanup;
}
if (qemuDomainGetStatsOneBlock(driver, cfg, dom, records, nrecords,
backendalias, n, *recordnr,
stats) < 0)
goto cleanup;
if (qemuDomainGetStatsBlockExportBackendStorage(backendstoragealias,
stats, *recordnr,
records, nrecords) < 0)
goto cleanup;
VIR_FREE(alias);
(*recordnr)++;
if (!visitBacking)
break;
}
ret = 0;
cleanup:
VIR_FREE(alias);
return ret;
}
static int
qemuDomainGetStatsBlock(virQEMUDriverPtr driver,
virDomainObjPtr dom,
virDomainStatsRecordPtr record,
int *maxparams,
unsigned int privflags)
{
size_t i;
int ret = -1;
int rc;
virHashTablePtr stats = NULL;
virHashTablePtr nodestats = NULL;
virJSONValuePtr nodedata = NULL;
qemuDomainObjPrivatePtr priv = dom->privateData;
virQEMUDriverConfigPtr cfg = virQEMUDriverGetConfig(driver);
bool blockdev = virQEMUCapsGet(priv->qemuCaps, QEMU_CAPS_BLOCKDEV);
bool fetchnodedata = virQEMUCapsGet(priv->qemuCaps,
QEMU_CAPS_QUERY_NAMED_BLOCK_NODES) && !blockdev;
int count_index = -1;
size_t visited = 0;
bool visitBacking = !!(privflags & QEMU_DOMAIN_STATS_BACKING);
if (HAVE_JOB(privflags) && virDomainObjIsActive(dom)) {
qemuDomainObjEnterMonitor(driver, dom);
rc = qemuMonitorGetAllBlockStatsInfo(priv->mon, &stats, visitBacking);
if (rc >= 0) {
if (blockdev)
rc = qemuMonitorBlockStatsUpdateCapacityBlockdev(priv->mon, stats);
else
ignore_value(qemuMonitorBlockStatsUpdateCapacity(priv->mon, stats,
visitBacking));
}
if (fetchnodedata)
nodedata = qemuMonitorQueryNamedBlockNodes(priv->mon);
if (qemuDomainObjExitMonitor(driver, dom) < 0)
goto cleanup;
/* failure to retrieve stats is fine at this point */
if (rc < 0 || (fetchnodedata && !nodedata))
virResetLastError();
}
if (nodedata &&
!(nodestats = qemuBlockGetNodeData(nodedata)))
goto cleanup;
/* When listing backing chains, it's easier to fix up the count
* after the iteration than it is to iterate twice; but we still
* want count listed first. */
count_index = record->nparams;
QEMU_ADD_COUNT_PARAM(record, maxparams, "block", 0);
for (i = 0; i < dom->def->ndisks; i++) {
if (qemuDomainGetStatsBlockExportDisk(dom->def->disks[i], stats, nodestats,
record, maxparams, &visited,
visitBacking, driver, cfg, dom,
blockdev) < 0)
goto cleanup;
}
record->params[count_index].value.ui = visited;
ret = 0;
cleanup:
virHashFree(stats);
virHashFree(nodestats);
virJSONValueFree(nodedata);
virObjectUnref(cfg);
return ret;
}
#undef QEMU_ADD_BLOCK_PARAM_LL
#undef QEMU_ADD_BLOCK_PARAM_ULL
#undef QEMU_ADD_NAME_PARAM
#define QEMU_ADD_IOTHREAD_PARAM_UI(record, maxparams, id, name, value) \
do { \
char param_name[VIR_TYPED_PARAM_FIELD_LENGTH]; \
snprintf(param_name, VIR_TYPED_PARAM_FIELD_LENGTH, \
"iothread.%u.%s", id, name); \
if (virTypedParamsAddUInt(&(record)->params, \
&(record)->nparams, \
maxparams, \
param_name, \
value) < 0) \
goto cleanup; \
} while (0)
#define QEMU_ADD_IOTHREAD_PARAM_ULL(record, maxparams, id, name, value) \
do { \
char param_name[VIR_TYPED_PARAM_FIELD_LENGTH]; \
snprintf(param_name, VIR_TYPED_PARAM_FIELD_LENGTH, \
"iothread.%u.%s", id, name); \
if (virTypedParamsAddULLong(&(record)->params, \
&(record)->nparams, \
maxparams, \
param_name, \
value) < 0) \
goto cleanup; \
} while (0)
static int
qemuDomainGetStatsIOThread(virQEMUDriverPtr driver,
virDomainObjPtr dom,
virDomainStatsRecordPtr record,
int *maxparams,
unsigned int privflags ATTRIBUTE_UNUSED)
{
qemuDomainObjPrivatePtr priv = dom->privateData;
size_t i;
qemuMonitorIOThreadInfoPtr *iothreads = NULL;
int niothreads;
int ret = -1;
if (!virDomainObjIsActive(dom))
return 0;
if (!virQEMUCapsGet(priv->qemuCaps, QEMU_CAPS_OBJECT_IOTHREAD))
return 0;
if ((niothreads = qemuDomainGetIOThreadsMon(driver, dom, &iothreads)) < 0)
return -1;
if (niothreads == 0)
return 0;
QEMU_ADD_COUNT_PARAM(record, maxparams, "iothread", niothreads);
for (i = 0; i < niothreads; i++) {
if (iothreads[i]->poll_valid) {
QEMU_ADD_IOTHREAD_PARAM_ULL(record, maxparams,
iothreads[i]->iothread_id,
"poll-max-ns",
iothreads[i]->poll_max_ns);
QEMU_ADD_IOTHREAD_PARAM_UI(record, maxparams,
iothreads[i]->iothread_id,
"poll-grow",
iothreads[i]->poll_grow);
QEMU_ADD_IOTHREAD_PARAM_UI(record, maxparams,
iothreads[i]->iothread_id,
"poll-shrink",
iothreads[i]->poll_shrink);
}
}
ret = 0;
cleanup:
for (i = 0; i < niothreads; i++)
VIR_FREE(iothreads[i]);
VIR_FREE(iothreads);
return ret;
}
#undef QEMU_ADD_IOTHREAD_PARAM_UI
#undef QEMU_ADD_IOTHREAD_PARAM_ULL
#undef QEMU_ADD_COUNT_PARAM
static int
qemuDomainGetStatsPerfOneEvent(virPerfPtr perf,
virPerfEventType type,
virDomainStatsRecordPtr record,
int *maxparams)
{
char param_name[VIR_TYPED_PARAM_FIELD_LENGTH];
uint64_t value = 0;
if (virPerfReadEvent(perf, type, &value) < 0)
return -1;
snprintf(param_name, VIR_TYPED_PARAM_FIELD_LENGTH, "perf.%s",
virPerfEventTypeToString(type));
if (virTypedParamsAddULLong(&record->params,
&record->nparams,
maxparams,
param_name,
value) < 0)
return -1;
return 0;
}
static int
qemuDomainGetStatsPerf(virQEMUDriverPtr driver ATTRIBUTE_UNUSED,
virDomainObjPtr dom,
virDomainStatsRecordPtr record,
int *maxparams,
unsigned int privflags ATTRIBUTE_UNUSED)
{
size_t i;
qemuDomainObjPrivatePtr priv = dom->privateData;
int ret = -1;
for (i = 0; i < VIR_PERF_EVENT_LAST; i++) {
if (!virPerfEventIsEnabled(priv->perf, i))
continue;
if (qemuDomainGetStatsPerfOneEvent(priv->perf, i,
record, maxparams) < 0)
goto cleanup;
}
ret = 0;
cleanup:
return ret;
}
typedef int
(*qemuDomainGetStatsFunc)(virQEMUDriverPtr driver,
virDomainObjPtr dom,
virDomainStatsRecordPtr record,
int *maxparams,
unsigned int flags);
struct qemuDomainGetStatsWorker {
qemuDomainGetStatsFunc func;
unsigned int stats;
bool monitor;
};
static struct qemuDomainGetStatsWorker qemuDomainGetStatsWorkers[] = {
{ qemuDomainGetStatsState, VIR_DOMAIN_STATS_STATE, false },
{ qemuDomainGetStatsCpu, VIR_DOMAIN_STATS_CPU_TOTAL, false },
{ qemuDomainGetStatsBalloon, VIR_DOMAIN_STATS_BALLOON, true },
{ qemuDomainGetStatsVcpu, VIR_DOMAIN_STATS_VCPU, true },
{ qemuDomainGetStatsInterface, VIR_DOMAIN_STATS_INTERFACE, false },
{ qemuDomainGetStatsBlock, VIR_DOMAIN_STATS_BLOCK, true },
{ qemuDomainGetStatsPerf, VIR_DOMAIN_STATS_PERF, false },
{ qemuDomainGetStatsIOThread, VIR_DOMAIN_STATS_IOTHREAD, true },
{ NULL, 0, false }
};
static int
qemuDomainGetStatsCheckSupport(unsigned int *stats,
bool enforce)
{
unsigned int supportedstats = 0;
size_t i;
for (i = 0; qemuDomainGetStatsWorkers[i].func; i++)
supportedstats |= qemuDomainGetStatsWorkers[i].stats;
if (*stats == 0) {
*stats = supportedstats;
return 0;
}
if (enforce &&
*stats & ~supportedstats) {
virReportError(VIR_ERR_ARGUMENT_UNSUPPORTED,
_("Stats types bits 0x%x are not supported by this daemon"),
*stats & ~supportedstats);
return -1;
}
*stats &= supportedstats;
return 0;
}
static bool
qemuDomainGetStatsNeedMonitor(unsigned int stats)
{
size_t i;
for (i = 0; qemuDomainGetStatsWorkers[i].func; i++)
if (stats & qemuDomainGetStatsWorkers[i].stats &&
qemuDomainGetStatsWorkers[i].monitor)
return true;
return false;
}
static int
qemuDomainGetStats(virConnectPtr conn,
virDomainObjPtr dom,
unsigned int stats,
virDomainStatsRecordPtr *record,
unsigned int flags)
{
int maxparams = 0;
virDomainStatsRecordPtr tmp;
size_t i;
int ret = -1;
if (VIR_ALLOC(tmp) < 0)
goto cleanup;
for (i = 0; qemuDomainGetStatsWorkers[i].func; i++) {
if (stats & qemuDomainGetStatsWorkers[i].stats) {
if (qemuDomainGetStatsWorkers[i].func(conn->privateData, dom, tmp,
&maxparams, flags) < 0)
goto cleanup;
}
}
if (!(tmp->dom = virGetDomain(conn, dom->def->name,
dom->def->uuid, dom->def->id)))
goto cleanup;
*record = tmp;
tmp = NULL;
ret = 0;
cleanup:
if (tmp) {
virTypedParamsFree(tmp->params, tmp->nparams);
VIR_FREE(tmp);
}
return ret;
}
static int
qemuConnectGetAllDomainStats(virConnectPtr conn,
virDomainPtr *doms,
unsigned int ndoms,
unsigned int stats,
virDomainStatsRecordPtr **retStats,
unsigned int flags)
{
virQEMUDriverPtr driver = conn->privateData;
virErrorPtr orig_err = NULL;
virDomainObjPtr *vms = NULL;
virDomainObjPtr vm;
size_t nvms;
virDomainStatsRecordPtr *tmpstats = NULL;
bool enforce = !!(flags & VIR_CONNECT_GET_ALL_DOMAINS_STATS_ENFORCE_STATS);
int nstats = 0;
size_t i;
int ret = -1;
unsigned int privflags = 0;
unsigned int domflags = 0;
unsigned int lflags = flags & (VIR_CONNECT_LIST_DOMAINS_FILTERS_ACTIVE |
VIR_CONNECT_LIST_DOMAINS_FILTERS_PERSISTENT |
VIR_CONNECT_LIST_DOMAINS_FILTERS_STATE);
virCheckFlags(VIR_CONNECT_LIST_DOMAINS_FILTERS_ACTIVE |
VIR_CONNECT_LIST_DOMAINS_FILTERS_PERSISTENT |
VIR_CONNECT_LIST_DOMAINS_FILTERS_STATE |
VIR_CONNECT_GET_ALL_DOMAINS_STATS_NOWAIT |
VIR_CONNECT_GET_ALL_DOMAINS_STATS_BACKING |
VIR_CONNECT_GET_ALL_DOMAINS_STATS_ENFORCE_STATS, -1);
if (virConnectGetAllDomainStatsEnsureACL(conn) < 0)
return -1;
if (qemuDomainGetStatsCheckSupport(&stats, enforce) < 0)
return -1;
if (ndoms) {
if (virDomainObjListConvert(driver->domains, conn, doms, ndoms, &vms,
&nvms, virConnectGetAllDomainStatsCheckACL,
lflags, true) < 0)
return -1;
} else {
if (virDomainObjListCollect(driver->domains, conn, &vms, &nvms,
virConnectGetAllDomainStatsCheckACL,
lflags) < 0)
return -1;
}
if (VIR_ALLOC_N(tmpstats, nvms + 1) < 0)
goto cleanup;
if (qemuDomainGetStatsNeedMonitor(stats))
privflags |= QEMU_DOMAIN_STATS_HAVE_JOB;
for (i = 0; i < nvms; i++) {
virDomainStatsRecordPtr tmp = NULL;
domflags = 0;
vm = vms[i];
virObjectLock(vm);
if (HAVE_JOB(privflags)) {
int rv;
if (flags & VIR_CONNECT_GET_ALL_DOMAINS_STATS_NOWAIT)
rv = qemuDomainObjBeginJobNowait(driver, vm, QEMU_JOB_QUERY);
else
rv = qemuDomainObjBeginJob(driver, vm, QEMU_JOB_QUERY);
if (rv == 0)
domflags |= QEMU_DOMAIN_STATS_HAVE_JOB;
}
/* else: without a job it's still possible to gather some data */
if (flags & VIR_CONNECT_GET_ALL_DOMAINS_STATS_BACKING)
domflags |= QEMU_DOMAIN_STATS_BACKING;
if (qemuDomainGetStats(conn, vm, stats, &tmp, domflags) < 0) {
if (HAVE_JOB(domflags) && vm)
qemuDomainObjEndJob(driver, vm);
virObjectUnlock(vm);
goto cleanup;
}
if (tmp)
tmpstats[nstats++] = tmp;
if (HAVE_JOB(domflags))
qemuDomainObjEndJob(driver, vm);
virObjectUnlock(vm);
}
*retStats = tmpstats;
tmpstats = NULL;
ret = nstats;
cleanup:
virErrorPreserveLast(&orig_err);
virDomainStatsRecordListFree(tmpstats);
virObjectListFreeCount(vms, nvms);
virErrorRestore(&orig_err);
return ret;
}
static int
qemuNodeAllocPages(virConnectPtr conn,
unsigned int npages,
unsigned int *pageSizes,
unsigned long long *pageCounts,
int startCell,
unsigned int cellCount,
unsigned int flags)
{
bool add = !(flags & VIR_NODE_ALLOC_PAGES_SET);
virCheckFlags(VIR_NODE_ALLOC_PAGES_SET, -1);
if (virNodeAllocPagesEnsureACL(conn) < 0)
return -1;
return virHostMemAllocPages(npages, pageSizes, pageCounts,
startCell, cellCount, add);
}
static int
qemuDomainGetFSInfo(virDomainPtr dom,
virDomainFSInfoPtr **info,
unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
virDomainObjPtr vm;
qemuAgentPtr agent;
virCapsPtr caps = NULL;
virDomainDefPtr def = NULL;
int ret = -1;
virCheckFlags(0, ret);
if (!(vm = qemuDomObjFromDomain(dom)))
return ret;
if (virDomainGetFSInfoEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
if (qemuDomainObjBeginAgentJob(driver, vm, QEMU_AGENT_JOB_QUERY) < 0)
goto cleanup;
if (virDomainObjCheckActive(vm) < 0)
goto endjob;
if (!qemuDomainAgentAvailable(vm, true))
goto endjob;
if (!(caps = virQEMUDriverGetCapabilities(driver, false)))
goto endjob;
if (!(def = virDomainDefCopy(vm->def, caps, driver->xmlopt, NULL, false)))
goto endjob;
agent = qemuDomainObjEnterAgent(vm);
ret = qemuAgentGetFSInfo(agent, info, def);
qemuDomainObjExitAgent(vm, agent);
endjob:
qemuDomainObjEndAgentJob(vm);
cleanup:
virDomainObjEndAPI(&vm);
virDomainDefFree(def);
virObjectUnref(caps);
return ret;
}
static int
qemuDomainInterfaceAddresses(virDomainPtr dom,
virDomainInterfacePtr **ifaces,
unsigned int source,
unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
virDomainObjPtr vm = NULL;
qemuAgentPtr agent;
int ret = -1;
virCheckFlags(0, -1);
if (!(vm = qemuDomObjFromDomain(dom)))
goto cleanup;
if (virDomainInterfaceAddressesEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
if (virDomainObjCheckActive(vm) < 0)
goto cleanup;
switch (source) {
case VIR_DOMAIN_INTERFACE_ADDRESSES_SRC_LEASE:
ret = qemuGetDHCPInterfaces(dom, vm, ifaces);
break;
case VIR_DOMAIN_INTERFACE_ADDRESSES_SRC_AGENT:
if (qemuDomainObjBeginAgentJob(driver, vm, QEMU_AGENT_JOB_QUERY) < 0)
goto cleanup;
if (!qemuDomainAgentAvailable(vm, true))
goto endjob;
agent = qemuDomainObjEnterAgent(vm);
ret = qemuAgentGetInterfaces(agent, ifaces);
qemuDomainObjExitAgent(vm, agent);
endjob:
qemuDomainObjEndAgentJob(vm);
break;
case VIR_DOMAIN_INTERFACE_ADDRESSES_SRC_ARP:
ret = qemuARPGetInterfaces(vm, ifaces);
break;
default:
virReportError(VIR_ERR_ARGUMENT_UNSUPPORTED,
_("Unknown IP address data source %d"),
source);
break;
}
cleanup:
virDomainObjEndAPI(&vm);
return ret;
}
static int
qemuGetDHCPInterfaces(virDomainPtr dom,
virDomainObjPtr vm,
virDomainInterfacePtr **ifaces)
{
int rv = -1;
int n_leases = 0;
size_t i, j;
size_t ifaces_count = 0;
virNetworkPtr network = NULL;
char macaddr[VIR_MAC_STRING_BUFLEN];
virDomainInterfacePtr iface = NULL;
virNetworkDHCPLeasePtr *leases = NULL;
virDomainInterfacePtr *ifaces_ret = NULL;
if (!dom->conn->networkDriver ||
!dom->conn->networkDriver->networkGetDHCPLeases) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Network driver does not support DHCP lease query"));
return -1;
}
for (i = 0; i < vm->def->nnets; i++) {
if (vm->def->nets[i]->type != VIR_DOMAIN_NET_TYPE_NETWORK)
continue;
virMacAddrFormat(&(vm->def->nets[i]->mac), macaddr);
virObjectUnref(network);
network = virNetworkLookupByName(dom->conn,
vm->def->nets[i]->data.network.name);
if ((n_leases = virNetworkGetDHCPLeases(network, macaddr,
&leases, 0)) < 0)
goto error;
if (n_leases) {
if (VIR_EXPAND_N(ifaces_ret, ifaces_count, 1) < 0)
goto error;
if (VIR_ALLOC(ifaces_ret[ifaces_count - 1]) < 0)
goto error;
iface = ifaces_ret[ifaces_count - 1];
/* Assuming each lease corresponds to a separate IP */
iface->naddrs = n_leases;
if (VIR_ALLOC_N(iface->addrs, iface->naddrs) < 0)
goto error;
if (VIR_STRDUP(iface->name, vm->def->nets[i]->ifname) < 0)
goto error;
if (VIR_STRDUP(iface->hwaddr, macaddr) < 0)
goto error;
}
for (j = 0; j < n_leases; j++) {
virNetworkDHCPLeasePtr lease = leases[j];
virDomainIPAddressPtr ip_addr = &iface->addrs[j];
if (VIR_STRDUP(ip_addr->addr, lease->ipaddr) < 0)
goto error;
ip_addr->type = lease->type;
ip_addr->prefix = lease->prefix;
}
for (j = 0; j < n_leases; j++)
virNetworkDHCPLeaseFree(leases[j]);
VIR_FREE(leases);
}
VIR_STEAL_PTR(*ifaces, ifaces_ret);
rv = ifaces_count;
cleanup:
virObjectUnref(network);
if (leases) {
for (i = 0; i < n_leases; i++)
virNetworkDHCPLeaseFree(leases[i]);
}
VIR_FREE(leases);
return rv;
error:
if (ifaces_ret) {
for (i = 0; i < ifaces_count; i++)
virDomainInterfaceFree(ifaces_ret[i]);
}
VIR_FREE(ifaces_ret);
goto cleanup;
}
static int
qemuARPGetInterfaces(virDomainObjPtr vm,
virDomainInterfacePtr **ifaces)
{
size_t i, j;
size_t ifaces_count = 0;
int ret = -1;
char macaddr[VIR_MAC_STRING_BUFLEN];
virDomainInterfacePtr *ifaces_ret = NULL;
virDomainInterfacePtr iface = NULL;
virArpTablePtr table;
table = virArpTableGet();
if (!table)
goto cleanup;
for (i = 0; i < vm->def->nnets; i++) {
virMacAddrFormat(&(vm->def->nets[i]->mac), macaddr);
for (j = 0; j < table->n; j++) {
virArpTableEntry entry = table->t[j];
if (STREQ(entry.mac, macaddr)) {
if (VIR_ALLOC(iface) < 0)
goto cleanup;
if (VIR_STRDUP(iface->name, vm->def->nets[i]->ifname) < 0)
goto cleanup;
if (VIR_STRDUP(iface->hwaddr, macaddr) < 0)
goto cleanup;
if (VIR_ALLOC(iface->addrs) < 0)
goto cleanup;
iface->naddrs = 1;
if (VIR_STRDUP(iface->addrs->addr, entry.ipaddr) < 0)
goto cleanup;
if (VIR_APPEND_ELEMENT(ifaces_ret, ifaces_count, iface) < 0)
goto cleanup;
}
}
}
VIR_STEAL_PTR(*ifaces, ifaces_ret);
ret = ifaces_count;
cleanup:
virArpTableFree(table);
virDomainInterfaceFree(iface);
if (ifaces_ret) {
for (i = 0; i < ifaces_count; i++)
virDomainInterfaceFree(ifaces_ret[i]);
}
VIR_FREE(ifaces_ret);
return ret;
}
static int
qemuDomainSetUserPassword(virDomainPtr dom,
const char *user,
const char *password,
unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
virDomainObjPtr vm;
qemuAgentPtr agent;
int ret = -1;
int rv;
virCheckFlags(VIR_DOMAIN_PASSWORD_ENCRYPTED, -1);
if (!(vm = qemuDomObjFromDomain(dom)))
return ret;
if (virDomainSetUserPasswordEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
if (qemuDomainObjBeginAgentJob(driver, vm, QEMU_AGENT_JOB_MODIFY) < 0)
goto cleanup;
if (virDomainObjCheckActive(vm) < 0)
goto endjob;
if (!qemuDomainAgentAvailable(vm, true))
goto endjob;
agent = qemuDomainObjEnterAgent(vm);
rv = qemuAgentSetUserPassword(agent, user, password,
flags & VIR_DOMAIN_PASSWORD_ENCRYPTED);
qemuDomainObjExitAgent(vm, agent);
if (rv < 0)
goto endjob;
ret = 0;
endjob:
qemuDomainObjEndAgentJob(vm);
cleanup:
virDomainObjEndAPI(&vm);
return ret;
}
static int
qemuDomainRenameCallback(virDomainObjPtr vm,
const char *new_name,
unsigned int flags,
void *opaque)
{
virQEMUDriverPtr driver = opaque;
virQEMUDriverConfigPtr cfg = NULL;
virObjectEventPtr event_new = NULL;
virObjectEventPtr event_old = NULL;
int ret = -1;
char *new_dom_name = NULL;
char *old_dom_name = NULL;
char *new_dom_cfg_file = NULL;
char *old_dom_cfg_file = NULL;
char *new_dom_autostart_link = NULL;
char *old_dom_autostart_link = NULL;
virCheckFlags(0, ret);
if (strchr(new_name, '/')) {
virReportError(VIR_ERR_XML_ERROR,
_("name %s cannot contain '/'"), new_name);
return -1;
}
cfg = virQEMUDriverGetConfig(driver);
if (VIR_STRDUP(new_dom_name, new_name) < 0)
goto cleanup;
if (!(new_dom_cfg_file = virDomainConfigFile(cfg->configDir,
new_dom_name)) ||
!(old_dom_cfg_file = virDomainConfigFile(cfg->configDir,
vm->def->name)))
goto cleanup;
if (vm->autostart) {
if (!(new_dom_autostart_link = virDomainConfigFile(cfg->autostartDir,
new_dom_name)) ||
!(old_dom_autostart_link = virDomainConfigFile(cfg->autostartDir,
vm->def->name)))
goto cleanup;
if (symlink(new_dom_cfg_file, new_dom_autostart_link) < 0) {
virReportSystemError(errno,
_("Failed to create symlink '%s to '%s'"),
new_dom_autostart_link, new_dom_cfg_file);
goto cleanup;
}
}
event_old = virDomainEventLifecycleNewFromObj(vm,
VIR_DOMAIN_EVENT_UNDEFINED,
VIR_DOMAIN_EVENT_UNDEFINED_RENAMED);
/* Switch name in domain definition. */
old_dom_name = vm->def->name;
vm->def->name = new_dom_name;
new_dom_name = NULL;
if (virDomainSaveConfig(cfg->configDir, driver->caps, vm->def) < 0)
goto rollback;
if (virFileExists(old_dom_cfg_file) &&
unlink(old_dom_cfg_file) < 0) {
virReportSystemError(errno,
_("cannot remove old domain config file %s"),
old_dom_cfg_file);
goto rollback;
}
if (vm->autostart) {
if (virFileIsLink(old_dom_autostart_link) &&
unlink(old_dom_autostart_link) < 0) {
virReportSystemError(errno,
_("Failed to delete symlink '%s'"),
old_dom_autostart_link);
goto rollback;
}
}
event_new = virDomainEventLifecycleNewFromObj(vm,
VIR_DOMAIN_EVENT_DEFINED,
VIR_DOMAIN_EVENT_DEFINED_RENAMED);
ret = 0;
cleanup:
VIR_FREE(old_dom_autostart_link);
VIR_FREE(new_dom_autostart_link);
VIR_FREE(old_dom_cfg_file);
VIR_FREE(new_dom_cfg_file);
VIR_FREE(old_dom_name);
VIR_FREE(new_dom_name);
virObjectEventStateQueue(driver->domainEventState, event_old);
virObjectEventStateQueue(driver->domainEventState, event_new);
virObjectUnref(cfg);
return ret;
rollback:
if (old_dom_name) {
new_dom_name = vm->def->name;
vm->def->name = old_dom_name;
old_dom_name = NULL;
}
if (virFileExists(new_dom_cfg_file))
unlink(new_dom_cfg_file);
if (vm->autostart &&
virFileExists(new_dom_autostart_link))
unlink(new_dom_autostart_link);
goto cleanup;
}
static int qemuDomainRename(virDomainPtr dom,
const char *new_name,
unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
virDomainObjPtr vm = NULL;
int ret = -1;
virCheckFlags(0, ret);
if (!(vm = qemuDomObjFromDomain(dom)))
goto cleanup;
if (virDomainRenameEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_MODIFY) < 0)
goto cleanup;
if (virDomainObjIsActive(vm)) {
virReportError(VIR_ERR_OPERATION_INVALID, "%s",
_("cannot rename active domain"));
goto endjob;
}
if (!vm->persistent) {
virReportError(VIR_ERR_OPERATION_INVALID, "%s",
_("cannot rename a transient domain"));
goto endjob;
}
if (vm->hasManagedSave) {
virReportError(VIR_ERR_OPERATION_INVALID, "%s",
_("domain with a managed saved state can't be renamed"));
goto endjob;
}
if (virDomainObjGetState(vm, NULL) != VIR_DOMAIN_SHUTOFF) {
virReportError(VIR_ERR_OPERATION_INVALID,
"%s", _("domain has to be shutoff before renaming"));
goto endjob;
}
if (virDomainSnapshotObjListNum(vm->snapshots, NULL, 0) > 0) {
virReportError(VIR_ERR_OPERATION_INVALID,
"%s", _("cannot rename domain with snapshots"));
goto endjob;
}
if (virDomainObjListRename(driver->domains, vm, new_name, flags,
qemuDomainRenameCallback, driver) < 0)
goto endjob;
/* Success, domain has been renamed. */
ret = 0;
endjob:
qemuDomainObjEndJob(driver, vm);
cleanup:
virDomainObjEndAPI(&vm);
return ret;
}
static int
qemuDomainGetGuestVcpusParams(virTypedParameterPtr *params,
unsigned int *nparams,
qemuAgentCPUInfoPtr info,
int ninfo)
{
virTypedParameterPtr par = NULL;
int npar = 0;
int maxpar = 0;
virBitmapPtr vcpus = NULL;
virBitmapPtr online = NULL;
virBitmapPtr offlinable = NULL;
char *tmp = NULL;
size_t i;
int ret = -1;
if (!(vcpus = virBitmapNew(QEMU_GUEST_VCPU_MAX_ID)) ||
!(online = virBitmapNew(QEMU_GUEST_VCPU_MAX_ID)) ||
!(offlinable = virBitmapNew(QEMU_GUEST_VCPU_MAX_ID)))
goto cleanup;
for (i = 0; i < ninfo; i++) {
if (virBitmapSetBit(vcpus, info[i].id) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("vcpu id '%u' reported by guest agent is out of "
"range"), info[i].id);
goto cleanup;
}
if (info[i].online)
ignore_value(virBitmapSetBit(online, info[i].id));
if (info[i].offlinable)
ignore_value(virBitmapSetBit(offlinable, info[i].id));
}
#define ADD_BITMAP(name) \
if (!(tmp = virBitmapFormat(name))) \
goto cleanup; \
if (virTypedParamsAddString(&par, &npar, &maxpar, #name, tmp) < 0) \
goto cleanup; \
VIR_FREE(tmp)
ADD_BITMAP(vcpus);
ADD_BITMAP(online);
ADD_BITMAP(offlinable);
#undef ADD_BITMAP
*params = par;
*nparams = npar;
par = NULL;
ret = 0;
cleanup:
VIR_FREE(tmp);
virBitmapFree(vcpus);
virBitmapFree(online);
virBitmapFree(offlinable);
virTypedParamsFree(par, npar);
return ret;
}
static int
qemuDomainGetGuestVcpus(virDomainPtr dom,
virTypedParameterPtr *params,
unsigned int *nparams,
unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
virDomainObjPtr vm = NULL;
qemuAgentPtr agent;
qemuAgentCPUInfoPtr info = NULL;
int ninfo = 0;
int ret = -1;
virCheckFlags(0, ret);
if (!(vm = qemuDomObjFromDomain(dom)))
goto cleanup;
if (virDomainGetGuestVcpusEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
if (qemuDomainObjBeginAgentJob(driver, vm, QEMU_AGENT_JOB_QUERY) < 0)
goto cleanup;
if (!qemuDomainAgentAvailable(vm, true))
goto endjob;
agent = qemuDomainObjEnterAgent(vm);
ninfo = qemuAgentGetVCPUs(agent, &info);
qemuDomainObjExitAgent(vm, agent);
if (ninfo < 0)
goto endjob;
if (qemuDomainGetGuestVcpusParams(params, nparams, info, ninfo) < 0)
goto endjob;
ret = 0;
endjob:
qemuDomainObjEndAgentJob(vm);
cleanup:
VIR_FREE(info);
virDomainObjEndAPI(&vm);
return ret;
}
static int
qemuDomainSetGuestVcpus(virDomainPtr dom,
const char *cpumap,
int state,
unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
virDomainObjPtr vm = NULL;
virBitmapPtr map = NULL;
qemuAgentCPUInfoPtr info = NULL;
qemuAgentPtr agent;
int ninfo = 0;
size_t i;
int ret = -1;
virCheckFlags(0, -1);
if (state != 0 && state != 1) {
virReportInvalidArg(state, "%s", _("unsupported state value"));
return -1;
}
if (virBitmapParse(cpumap, &map, QEMU_GUEST_VCPU_MAX_ID) < 0)
goto cleanup;
if (!(vm = qemuDomObjFromDomain(dom)))
goto cleanup;
if (virDomainSetGuestVcpusEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
if (qemuDomainObjBeginAgentJob(driver, vm, QEMU_AGENT_JOB_MODIFY) < 0)
goto cleanup;
if (!qemuDomainAgentAvailable(vm, true))
goto endjob;
agent = qemuDomainObjEnterAgent(vm);
ninfo = qemuAgentGetVCPUs(agent, &info);
qemuDomainObjExitAgent(vm, agent);
agent = NULL;
if (ninfo < 0)
goto endjob;
for (i = 0; i < ninfo; i++) {
if (!virBitmapIsBitSet(map, info[i].id))
continue;
if (!state && !info[i].offlinable) {
virReportError(VIR_ERR_OPERATION_UNSUPPORTED,
_("vCPU '%u' is not offlinable"), info[i].id);
goto endjob;
}
info[i].online = !!state;
info[i].modified = true;
ignore_value(virBitmapClearBit(map, info[i].id));
}
if (!virBitmapIsAllClear(map)) {
char *tmp = virBitmapFormat(map);
virReportError(VIR_ERR_INVALID_ARG,
_("guest is missing vCPUs '%s'"), NULLSTR(tmp));
VIR_FREE(tmp);
goto endjob;
}
if (!qemuDomainAgentAvailable(vm, true))
goto endjob;
agent = qemuDomainObjEnterAgent(vm);
ret = qemuAgentSetVCPUs(agent, info, ninfo);
qemuDomainObjExitAgent(vm, agent);
endjob:
qemuDomainObjEndAgentJob(vm);
cleanup:
VIR_FREE(info);
virBitmapFree(map);
virDomainObjEndAPI(&vm);
return ret;
}
static int
qemuDomainSetVcpu(virDomainPtr dom,
const char *cpumap,
int state,
unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
virDomainObjPtr vm = NULL;
virDomainDefPtr def = NULL;
virDomainDefPtr persistentDef = NULL;
virBitmapPtr map = NULL;
ssize_t lastvcpu;
int ret = -1;
virCheckFlags(VIR_DOMAIN_AFFECT_LIVE |
VIR_DOMAIN_AFFECT_CONFIG, -1);
if (state != 0 && state != 1) {
virReportInvalidArg(state, "%s", _("unsupported state value"));
return -1;
}
if (virBitmapParse(cpumap, &map, QEMU_GUEST_VCPU_MAX_ID) < 0)
goto cleanup;
if ((lastvcpu = virBitmapLastSetBit(map)) < 0) {
virReportError(VIR_ERR_INVALID_ARG, "%s",
_("no vcpus selected for modification"));
goto cleanup;
}
if (!(vm = qemuDomObjFromDomain(dom)))
goto cleanup;
if (virDomainSetVcpuEnsureACL(dom->conn, vm->def, flags) < 0)
goto cleanup;
if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_MODIFY) < 0)
goto cleanup;
if (virDomainObjGetDefs(vm, flags, &def, &persistentDef) < 0)
goto endjob;
if (persistentDef) {
if (lastvcpu >= virDomainDefGetVcpusMax(persistentDef)) {
virReportError(VIR_ERR_INVALID_ARG,
_("vcpu %zd is not present in persistent config"),
lastvcpu);
goto endjob;
}
}
if (def) {
if (lastvcpu >= virDomainDefGetVcpusMax(def)) {
virReportError(VIR_ERR_INVALID_ARG,
_("vcpu %zd is not present in live config"),
lastvcpu);
goto endjob;
}
}
ret = qemuDomainSetVcpuInternal(driver, vm, def, persistentDef, map, !!state);
endjob:
qemuDomainObjEndJob(driver, vm);
cleanup:
virBitmapFree(map);
virDomainObjEndAPI(&vm);
return ret;
}
static int
qemuDomainSetBlockThreshold(virDomainPtr dom,
const char *dev,
unsigned long long threshold,
unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
qemuDomainObjPrivatePtr priv;
virDomainObjPtr vm = NULL;
virStorageSourcePtr src;
char *nodename = NULL;
int rc;
int ret = -1;
virCheckFlags(0, -1);
if (!(vm = qemuDomObjFromDomain(dom)))
goto cleanup;
priv = vm->privateData;
if (virDomainSetBlockThresholdEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_MODIFY) < 0)
goto cleanup;
if (virDomainObjCheckActive(vm) < 0)
goto endjob;
if (!virQEMUCapsGet(priv->qemuCaps, QEMU_CAPS_BLOCK_WRITE_THRESHOLD)) {
virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s",
_("this qemu does not support setting device threshold"));
goto endjob;
}
if (!(src = qemuDomainGetStorageSourceByDevstr(dev, vm->def)))
goto endjob;
if (!src->nodestorage &&
qemuBlockNodeNamesDetect(driver, vm, QEMU_ASYNC_JOB_NONE) < 0)
goto endjob;
if (!src->nodestorage) {
virReportError(VIR_ERR_OPERATION_UNSUPPORTED,
_("threshold currently can't be set for block device '%s'"),
dev);
goto endjob;
}
if (VIR_STRDUP(nodename, src->nodestorage) < 0)
goto endjob;
qemuDomainObjEnterMonitor(driver, vm);
rc = qemuMonitorSetBlockThreshold(priv->mon, nodename, threshold);
if (qemuDomainObjExitMonitor(driver, vm) < 0 || rc < 0)
goto endjob;
ret = 0;
endjob:
qemuDomainObjEndJob(driver, vm);
cleanup:
VIR_FREE(nodename);
virDomainObjEndAPI(&vm);
return ret;
}
static void
qemuDomainModifyLifecycleAction(virDomainDefPtr def,
virDomainLifecycle type,
virDomainLifecycleAction action)
{
switch (type) {
case VIR_DOMAIN_LIFECYCLE_POWEROFF:
def->onPoweroff = action;
break;
case VIR_DOMAIN_LIFECYCLE_REBOOT:
def->onReboot = action;
break;
case VIR_DOMAIN_LIFECYCLE_CRASH:
def->onCrash = action;
break;
case VIR_DOMAIN_LIFECYCLE_LAST:
break;
}
}
static int
qemuDomainSetLifecycleAction(virDomainPtr dom,
unsigned int type,
unsigned int action,
unsigned int flags)
{
virQEMUDriverPtr driver = dom->conn->privateData;
virQEMUDriverConfigPtr cfg = virQEMUDriverGetConfig(driver);
qemuDomainObjPrivatePtr priv;
virDomainObjPtr vm = NULL;
virDomainDefPtr def = NULL;
virDomainDefPtr persistentDef = NULL;
int ret = -1;
virCheckFlags(VIR_DOMAIN_AFFECT_LIVE |
VIR_DOMAIN_AFFECT_CONFIG, -1);
if (!virDomainDefLifecycleActionAllowed(type, action))
goto cleanup;
if (!(vm = qemuDomObjFromDomain(dom)))
goto cleanup;
priv = vm->privateData;
if (virDomainSetLifecycleActionEnsureACL(dom->conn, vm->def) < 0)
goto cleanup;
if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_MODIFY) < 0)
goto cleanup;
if (virDomainObjGetDefs(vm, flags, &def, &persistentDef) < 0)
goto endjob;
if (def) {
if (priv->allowReboot == VIR_TRISTATE_BOOL_NO) {
virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s",
_("cannot update lifecycle action because QEMU "
"was started with -no-reboot option"));
goto endjob;
}
qemuDomainModifyLifecycleAction(def, type, action);
if (virDomainSaveStatus(driver->xmlopt, cfg->stateDir,
vm, driver->caps) < 0)
goto endjob;
}
if (persistentDef) {
qemuDomainModifyLifecycleAction(persistentDef, type, action);
if (virDomainSaveConfig(cfg->configDir, driver->caps,
persistentDef) < 0)
goto endjob;
}
ret = 0;
endjob:
qemuDomainObjEndJob(driver, vm);
cleanup:
virDomainObjEndAPI(&vm);
virObjectUnref(cfg);
return ret;
}
static int
qemuGetSEVInfoToParams(virQEMUCapsPtr qemuCaps,
virTypedParameterPtr *params,
int *nparams,
unsigned int flags)
{
int maxpar = 0;
int n = 0;
virSEVCapabilityPtr sev = virQEMUCapsGetSEVCapabilities(qemuCaps);
virTypedParameterPtr sevParams = NULL;
virCheckFlags(VIR_TYPED_PARAM_STRING_OKAY, -1);
if (virTypedParamsAddString(&sevParams, &n, &maxpar,
VIR_NODE_SEV_PDH, sev->pdh) < 0)
return -1;
if (virTypedParamsAddString(&sevParams, &n, &maxpar,
VIR_NODE_SEV_CERT_CHAIN, sev->cert_chain) < 0)
goto cleanup;
if (virTypedParamsAddUInt(&sevParams, &n, &maxpar,
VIR_NODE_SEV_CBITPOS, sev->cbitpos) < 0)
goto cleanup;
if (virTypedParamsAddUInt(&sevParams, &n, &maxpar,
VIR_NODE_SEV_REDUCED_PHYS_BITS,
sev->reduced_phys_bits) < 0)
goto cleanup;
VIR_STEAL_PTR(*params, sevParams);
*nparams = n;
return 0;
cleanup:
virTypedParamsFree(sevParams, n);
return -1;
}
static int
qemuNodeGetSEVInfo(virConnectPtr conn,
virTypedParameterPtr *params,
int *nparams,
unsigned int flags)
{
virQEMUDriverPtr driver = conn->privateData;
virQEMUCapsPtr qemucaps = NULL;
int ret = -1;
if (virNodeGetSevInfoEnsureACL(conn) < 0)
return ret;
qemucaps = virQEMUCapsCacheLookupByArch(driver->qemuCapsCache,
virArchFromHost());
if (!qemucaps)
goto cleanup;
if (!virQEMUCapsGet(qemucaps, QEMU_CAPS_SEV_GUEST)) {
virReportError(VIR_ERR_OPERATION_UNSUPPORTED, "%s",
_("QEMU does not support SEV guest"));
goto cleanup;
}
if (qemuGetSEVInfoToParams(qemucaps, params, nparams, flags) < 0)
goto cleanup;
ret = 0;
cleanup:
virObjectUnref(qemucaps);
return ret;
}
static int
qemuDomainGetSEVMeasurement(virQEMUDriverPtr driver,
virDomainObjPtr vm,
virTypedParameterPtr *params,
int *nparams,
unsigned int flags)
{
int ret = -1;
char *tmp = NULL;
int maxpar = 0;
virCheckFlags(VIR_TYPED_PARAM_STRING_OKAY, -1);
if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_QUERY) < 0)
return -1;
qemuDomainObjEnterMonitor(driver, vm);
tmp = qemuMonitorGetSEVMeasurement(QEMU_DOMAIN_PRIVATE(vm)->mon);
if (qemuDomainObjExitMonitor(driver, vm) < 0)
goto endjob;
if (!tmp)
goto endjob;
if (virTypedParamsAddString(params, nparams, &maxpar,
VIR_DOMAIN_LAUNCH_SECURITY_SEV_MEASUREMENT,
tmp) < 0)
goto endjob;
ret = 0;
endjob:
VIR_FREE(tmp);
qemuDomainObjEndJob(driver, vm);
return ret;
}
static int
qemuDomainGetLaunchSecurityInfo(virDomainPtr domain,
virTypedParameterPtr *params,
int *nparams,
unsigned int flags)
{
virQEMUDriverPtr driver = domain->conn->privateData;
virDomainObjPtr vm;
int ret = -1;
if (!(vm = qemuDomObjFromDomain(domain)))
goto cleanup;
if (virDomainGetLaunchSecurityInfoEnsureACL(domain->conn, vm->def) < 0)
goto cleanup;
if (vm->def->sev) {
if (qemuDomainGetSEVMeasurement(driver, vm, params, nparams, flags) < 0)
goto cleanup;
}
ret = 0;
cleanup:
virDomainObjEndAPI(&vm);
return ret;
}
static virHypervisorDriver qemuHypervisorDriver = {
.name = QEMU_DRIVER_NAME,
.connectURIProbe = qemuConnectURIProbe,
.connectOpen = qemuConnectOpen, /* 0.2.0 */
.connectClose = qemuConnectClose, /* 0.2.0 */
.connectSupportsFeature = qemuConnectSupportsFeature, /* 0.5.0 */
.connectGetType = qemuConnectGetType, /* 0.2.0 */
.connectGetVersion = qemuConnectGetVersion, /* 0.2.0 */
.connectGetHostname = qemuConnectGetHostname, /* 0.3.3 */
.connectGetSysinfo = qemuConnectGetSysinfo, /* 0.8.8 */
.connectGetMaxVcpus = qemuConnectGetMaxVcpus, /* 0.2.1 */
.nodeGetInfo = qemuNodeGetInfo, /* 0.2.0 */
.connectGetCapabilities = qemuConnectGetCapabilities, /* 0.2.1 */
.connectListDomains = qemuConnectListDomains, /* 0.2.0 */
.connectNumOfDomains = qemuConnectNumOfDomains, /* 0.2.0 */
.connectListAllDomains = qemuConnectListAllDomains, /* 0.9.13 */
.domainCreateXML = qemuDomainCreateXML, /* 0.2.0 */
.domainLookupByID = qemuDomainLookupByID, /* 0.2.0 */
.domainLookupByUUID = qemuDomainLookupByUUID, /* 0.2.0 */
.domainLookupByName = qemuDomainLookupByName, /* 0.2.0 */
.domainSuspend = qemuDomainSuspend, /* 0.2.0 */
.domainResume = qemuDomainResume, /* 0.2.0 */
.domainShutdown = qemuDomainShutdown, /* 0.2.0 */
.domainShutdownFlags = qemuDomainShutdownFlags, /* 0.9.10 */
.domainReboot = qemuDomainReboot, /* 0.9.3 */
.domainReset = qemuDomainReset, /* 0.9.7 */
.domainDestroy = qemuDomainDestroy, /* 0.2.0 */
.domainDestroyFlags = qemuDomainDestroyFlags, /* 0.9.4 */
.domainGetOSType = qemuDomainGetOSType, /* 0.2.2 */
.domainGetMaxMemory = qemuDomainGetMaxMemory, /* 0.4.2 */
.domainSetMaxMemory = qemuDomainSetMaxMemory, /* 0.4.2 */
.domainSetMemory = qemuDomainSetMemory, /* 0.4.2 */
.domainSetMemoryFlags = qemuDomainSetMemoryFlags, /* 0.9.0 */
.domainSetMemoryParameters = qemuDomainSetMemoryParameters, /* 0.8.5 */
.domainGetMemoryParameters = qemuDomainGetMemoryParameters, /* 0.8.5 */
.domainSetMemoryStatsPeriod = qemuDomainSetMemoryStatsPeriod, /* 1.1.1 */
.domainSetBlkioParameters = qemuDomainSetBlkioParameters, /* 0.9.0 */
.domainGetBlkioParameters = qemuDomainGetBlkioParameters, /* 0.9.0 */
.domainGetInfo = qemuDomainGetInfo, /* 0.2.0 */
.domainGetState = qemuDomainGetState, /* 0.9.2 */
.domainGetControlInfo = qemuDomainGetControlInfo, /* 0.9.3 */
.domainSave = qemuDomainSave, /* 0.2.0 */
.domainSaveFlags = qemuDomainSaveFlags, /* 0.9.4 */
.domainRestore = qemuDomainRestore, /* 0.2.0 */
.domainRestoreFlags = qemuDomainRestoreFlags, /* 0.9.4 */
.domainSaveImageGetXMLDesc = qemuDomainSaveImageGetXMLDesc, /* 0.9.4 */
.domainSaveImageDefineXML = qemuDomainSaveImageDefineXML, /* 0.9.4 */
.domainCoreDump = qemuDomainCoreDump, /* 0.7.0 */
.domainCoreDumpWithFormat = qemuDomainCoreDumpWithFormat, /* 1.2.3 */
.domainScreenshot = qemuDomainScreenshot, /* 0.9.2 */
.domainSetVcpus = qemuDomainSetVcpus, /* 0.4.4 */
.domainSetVcpusFlags = qemuDomainSetVcpusFlags, /* 0.8.5 */
.domainGetVcpusFlags = qemuDomainGetVcpusFlags, /* 0.8.5 */
.domainPinVcpu = qemuDomainPinVcpu, /* 0.4.4 */
.domainPinVcpuFlags = qemuDomainPinVcpuFlags, /* 0.9.3 */
.domainGetVcpuPinInfo = qemuDomainGetVcpuPinInfo, /* 0.9.3 */
.domainPinEmulator = qemuDomainPinEmulator, /* 0.10.0 */
.domainGetEmulatorPinInfo = qemuDomainGetEmulatorPinInfo, /* 0.10.0 */
.domainGetVcpus = qemuDomainGetVcpus, /* 0.4.4 */
.domainGetMaxVcpus = qemuDomainGetMaxVcpus, /* 0.4.4 */
.domainGetIOThreadInfo = qemuDomainGetIOThreadInfo, /* 1.2.14 */
.domainPinIOThread = qemuDomainPinIOThread, /* 1.2.14 */
.domainAddIOThread = qemuDomainAddIOThread, /* 1.2.15 */
.domainDelIOThread = qemuDomainDelIOThread, /* 1.2.15 */
.domainSetIOThreadParams = qemuDomainSetIOThreadParams, /* 4.10.0 */
.domainGetSecurityLabel = qemuDomainGetSecurityLabel, /* 0.6.1 */
.domainGetSecurityLabelList = qemuDomainGetSecurityLabelList, /* 0.10.0 */
.nodeGetSecurityModel = qemuNodeGetSecurityModel, /* 0.6.1 */
.domainGetXMLDesc = qemuDomainGetXMLDesc, /* 0.2.0 */
.connectDomainXMLFromNative = qemuConnectDomainXMLFromNative, /* 0.6.4 */
.connectDomainXMLToNative = qemuConnectDomainXMLToNative, /* 0.6.4 */
.connectListDefinedDomains = qemuConnectListDefinedDomains, /* 0.2.0 */
.connectNumOfDefinedDomains = qemuConnectNumOfDefinedDomains, /* 0.2.0 */
.domainCreate = qemuDomainCreate, /* 0.2.0 */
.domainCreateWithFlags = qemuDomainCreateWithFlags, /* 0.8.2 */
.domainDefineXML = qemuDomainDefineXML, /* 0.2.0 */
.domainDefineXMLFlags = qemuDomainDefineXMLFlags, /* 1.2.12 */
.domainUndefine = qemuDomainUndefine, /* 0.2.0 */
.domainUndefineFlags = qemuDomainUndefineFlags, /* 0.9.4 */
.domainAttachDevice = qemuDomainAttachDevice, /* 0.4.1 */
.domainAttachDeviceFlags = qemuDomainAttachDeviceFlags, /* 0.7.7 */
.domainDetachDevice = qemuDomainDetachDevice, /* 0.5.0 */
.domainDetachDeviceFlags = qemuDomainDetachDeviceFlags, /* 0.7.7 */
.domainUpdateDeviceFlags = qemuDomainUpdateDeviceFlags, /* 0.8.0 */
.domainDetachDeviceAlias = qemuDomainDetachDeviceAlias, /* 4.4.0 */
.domainGetAutostart = qemuDomainGetAutostart, /* 0.2.1 */
.domainSetAutostart = qemuDomainSetAutostart, /* 0.2.1 */
.domainGetSchedulerType = qemuDomainGetSchedulerType, /* 0.7.0 */
.domainGetSchedulerParameters = qemuDomainGetSchedulerParameters, /* 0.7.0 */
.domainGetSchedulerParametersFlags = qemuDomainGetSchedulerParametersFlags, /* 0.9.2 */
.domainSetSchedulerParameters = qemuDomainSetSchedulerParameters, /* 0.7.0 */
.domainSetSchedulerParametersFlags = qemuDomainSetSchedulerParametersFlags, /* 0.9.2 */
.domainMigratePerform = qemuDomainMigratePerform, /* 0.5.0 */
.domainBlockResize = qemuDomainBlockResize, /* 0.9.8 */
.domainBlockStats = qemuDomainBlockStats, /* 0.4.1 */
.domainBlockStatsFlags = qemuDomainBlockStatsFlags, /* 0.9.5 */
.domainInterfaceStats = qemuDomainInterfaceStats, /* 0.4.1 */
.domainMemoryStats = qemuDomainMemoryStats, /* 0.7.5 */
.domainBlockPeek = qemuDomainBlockPeek, /* 0.4.4 */
.domainMemoryPeek = qemuDomainMemoryPeek, /* 0.4.4 */
.domainGetBlockInfo = qemuDomainGetBlockInfo, /* 0.8.1 */
.nodeGetCPUStats = qemuNodeGetCPUStats, /* 0.9.3 */
.nodeGetMemoryStats = qemuNodeGetMemoryStats, /* 0.9.3 */
.nodeGetCellsFreeMemory = qemuNodeGetCellsFreeMemory, /* 0.4.4 */
.nodeGetFreeMemory = qemuNodeGetFreeMemory, /* 0.4.4 */
.connectDomainEventRegister = qemuConnectDomainEventRegister, /* 0.5.0 */
.connectDomainEventDeregister = qemuConnectDomainEventDeregister, /* 0.5.0 */
.domainMigratePrepare2 = qemuDomainMigratePrepare2, /* 0.5.0 */
.domainMigrateFinish2 = qemuDomainMigrateFinish2, /* 0.5.0 */
.nodeDeviceDettach = qemuNodeDeviceDettach, /* 0.6.1 */
.nodeDeviceDetachFlags = qemuNodeDeviceDetachFlags, /* 1.0.5 */
.nodeDeviceReAttach = qemuNodeDeviceReAttach, /* 0.6.1 */
.nodeDeviceReset = qemuNodeDeviceReset, /* 0.6.1 */
.domainMigratePrepareTunnel = qemuDomainMigratePrepareTunnel, /* 0.7.2 */
.connectIsEncrypted = qemuConnectIsEncrypted, /* 0.7.3 */
.connectIsSecure = qemuConnectIsSecure, /* 0.7.3 */
.domainIsActive = qemuDomainIsActive, /* 0.7.3 */
.domainIsPersistent = qemuDomainIsPersistent, /* 0.7.3 */
.domainIsUpdated = qemuDomainIsUpdated, /* 0.8.6 */
.connectCompareCPU = qemuConnectCompareCPU, /* 0.7.5 */
.connectBaselineCPU = qemuConnectBaselineCPU, /* 0.7.7 */
.domainGetJobInfo = qemuDomainGetJobInfo, /* 0.7.7 */
.domainGetJobStats = qemuDomainGetJobStats, /* 1.0.3 */
.domainAbortJob = qemuDomainAbortJob, /* 0.7.7 */
.domainMigrateGetMaxDowntime = qemuDomainMigrateGetMaxDowntime, /* 3.7.0 */
.domainMigrateSetMaxDowntime = qemuDomainMigrateSetMaxDowntime, /* 0.8.0 */
.domainMigrateGetCompressionCache = qemuDomainMigrateGetCompressionCache, /* 1.0.3 */
.domainMigrateSetCompressionCache = qemuDomainMigrateSetCompressionCache, /* 1.0.3 */
.domainMigrateSetMaxSpeed = qemuDomainMigrateSetMaxSpeed, /* 0.9.0 */
.domainMigrateGetMaxSpeed = qemuDomainMigrateGetMaxSpeed, /* 0.9.5 */
.connectDomainEventRegisterAny = qemuConnectDomainEventRegisterAny, /* 0.8.0 */
.connectDomainEventDeregisterAny = qemuConnectDomainEventDeregisterAny, /* 0.8.0 */
.domainManagedSave = qemuDomainManagedSave, /* 0.8.0 */
.domainHasManagedSaveImage = qemuDomainHasManagedSaveImage, /* 0.8.0 */
.domainManagedSaveRemove = qemuDomainManagedSaveRemove, /* 0.8.0 */
.domainManagedSaveGetXMLDesc = qemuDomainManagedSaveGetXMLDesc, /* 3.7.0 */
.domainManagedSaveDefineXML = qemuDomainManagedSaveDefineXML, /* 3.7.0 */
.domainSnapshotCreateXML = qemuDomainSnapshotCreateXML, /* 0.8.0 */
.domainSnapshotGetXMLDesc = qemuDomainSnapshotGetXMLDesc, /* 0.8.0 */
.domainSnapshotNum = qemuDomainSnapshotNum, /* 0.8.0 */
.domainSnapshotListNames = qemuDomainSnapshotListNames, /* 0.8.0 */
.domainListAllSnapshots = qemuDomainListAllSnapshots, /* 0.9.13 */
.domainSnapshotNumChildren = qemuDomainSnapshotNumChildren, /* 0.9.7 */
.domainSnapshotListChildrenNames = qemuDomainSnapshotListChildrenNames, /* 0.9.7 */
.domainSnapshotListAllChildren = qemuDomainSnapshotListAllChildren, /* 0.9.13 */
.domainSnapshotLookupByName = qemuDomainSnapshotLookupByName, /* 0.8.0 */
.domainHasCurrentSnapshot = qemuDomainHasCurrentSnapshot, /* 0.8.0 */
.domainSnapshotGetParent = qemuDomainSnapshotGetParent, /* 0.9.7 */
.domainSnapshotCurrent = qemuDomainSnapshotCurrent, /* 0.8.0 */
.domainSnapshotIsCurrent = qemuDomainSnapshotIsCurrent, /* 0.9.13 */
.domainSnapshotHasMetadata = qemuDomainSnapshotHasMetadata, /* 0.9.13 */
.domainRevertToSnapshot = qemuDomainRevertToSnapshot, /* 0.8.0 */
.domainSnapshotDelete = qemuDomainSnapshotDelete, /* 0.8.0 */
.domainQemuMonitorCommand = qemuDomainQemuMonitorCommand, /* 0.8.3 */
.domainQemuAttach = qemuDomainQemuAttach, /* 0.9.4 */
.domainQemuAgentCommand = qemuDomainQemuAgentCommand, /* 0.10.0 */
.connectDomainQemuMonitorEventRegister = qemuConnectDomainQemuMonitorEventRegister, /* 1.2.3 */
.connectDomainQemuMonitorEventDeregister = qemuConnectDomainQemuMonitorEventDeregister, /* 1.2.3 */
.domainOpenConsole = qemuDomainOpenConsole, /* 0.8.6 */
.domainOpenGraphics = qemuDomainOpenGraphics, /* 0.9.7 */
.domainOpenGraphicsFD = qemuDomainOpenGraphicsFD, /* 1.2.8 */
.domainInjectNMI = qemuDomainInjectNMI, /* 0.9.2 */
.domainMigrateBegin3 = qemuDomainMigrateBegin3, /* 0.9.2 */
.domainMigratePrepare3 = qemuDomainMigratePrepare3, /* 0.9.2 */
.domainMigratePrepareTunnel3 = qemuDomainMigratePrepareTunnel3, /* 0.9.2 */
.domainMigratePerform3 = qemuDomainMigratePerform3, /* 0.9.2 */
.domainMigrateFinish3 = qemuDomainMigrateFinish3, /* 0.9.2 */
.domainMigrateConfirm3 = qemuDomainMigrateConfirm3, /* 0.9.2 */
.domainSendKey = qemuDomainSendKey, /* 0.9.4 */
.domainGetPerfEvents = qemuDomainGetPerfEvents, /* 1.3.3 */
.domainSetPerfEvents = qemuDomainSetPerfEvents, /* 1.3.3 */
.domainBlockJobAbort = qemuDomainBlockJobAbort, /* 0.9.4 */
.domainGetBlockJobInfo = qemuDomainGetBlockJobInfo, /* 0.9.4 */
.domainBlockJobSetSpeed = qemuDomainBlockJobSetSpeed, /* 0.9.4 */
.domainBlockPull = qemuDomainBlockPull, /* 0.9.4 */
.domainBlockRebase = qemuDomainBlockRebase, /* 0.9.10 */
.domainBlockCopy = qemuDomainBlockCopy, /* 1.2.9 */
.domainBlockCommit = qemuDomainBlockCommit, /* 1.0.0 */
.connectIsAlive = qemuConnectIsAlive, /* 0.9.8 */
.nodeSuspendForDuration = qemuNodeSuspendForDuration, /* 0.9.8 */
.domainSetBlockIoTune = qemuDomainSetBlockIoTune, /* 0.9.8 */
.domainGetBlockIoTune = qemuDomainGetBlockIoTune, /* 0.9.8 */
.domainSetNumaParameters = qemuDomainSetNumaParameters, /* 0.9.9 */
.domainGetNumaParameters = qemuDomainGetNumaParameters, /* 0.9.9 */
.domainGetInterfaceParameters = qemuDomainGetInterfaceParameters, /* 0.9.9 */
.domainSetInterfaceParameters = qemuDomainSetInterfaceParameters, /* 0.9.9 */
.domainGetDiskErrors = qemuDomainGetDiskErrors, /* 0.9.10 */
.domainSetMetadata = qemuDomainSetMetadata, /* 0.9.10 */
.domainGetMetadata = qemuDomainGetMetadata, /* 0.9.10 */
.domainPMSuspendForDuration = qemuDomainPMSuspendForDuration, /* 0.9.11 */
.domainPMWakeup = qemuDomainPMWakeup, /* 0.9.11 */
.domainGetCPUStats = qemuDomainGetCPUStats, /* 0.9.11 */
.nodeGetMemoryParameters = qemuNodeGetMemoryParameters, /* 0.10.2 */
.nodeSetMemoryParameters = qemuNodeSetMemoryParameters, /* 0.10.2 */
.nodeGetCPUMap = qemuNodeGetCPUMap, /* 1.0.0 */
.domainFSTrim = qemuDomainFSTrim, /* 1.0.1 */
.domainOpenChannel = qemuDomainOpenChannel, /* 1.0.2 */
.domainMigrateBegin3Params = qemuDomainMigrateBegin3Params, /* 1.1.0 */
.domainMigratePrepare3Params = qemuDomainMigratePrepare3Params, /* 1.1.0 */
.domainMigratePrepareTunnel3Params = qemuDomainMigratePrepareTunnel3Params, /* 1.1.0 */
.domainMigratePerform3Params = qemuDomainMigratePerform3Params, /* 1.1.0 */
.domainMigrateFinish3Params = qemuDomainMigrateFinish3Params, /* 1.1.0 */
.domainMigrateConfirm3Params = qemuDomainMigrateConfirm3Params, /* 1.1.0 */
.connectGetCPUModelNames = qemuConnectGetCPUModelNames, /* 1.1.3 */
.domainFSFreeze = qemuDomainFSFreeze, /* 1.2.5 */
.domainFSThaw = qemuDomainFSThaw, /* 1.2.5 */
.domainGetHostname = qemuDomainGetHostname, /* 4.8.0 */
.domainGetTime = qemuDomainGetTime, /* 1.2.5 */
.domainSetTime = qemuDomainSetTime, /* 1.2.5 */
.nodeGetFreePages = qemuNodeGetFreePages, /* 1.2.6 */
.connectGetDomainCapabilities = qemuConnectGetDomainCapabilities, /* 1.2.7 */
.connectGetAllDomainStats = qemuConnectGetAllDomainStats, /* 1.2.8 */
.nodeAllocPages = qemuNodeAllocPages, /* 1.2.9 */
.domainGetFSInfo = qemuDomainGetFSInfo, /* 1.2.11 */
.domainInterfaceAddresses = qemuDomainInterfaceAddresses, /* 1.2.14 */
.domainSetUserPassword = qemuDomainSetUserPassword, /* 1.2.16 */
.domainRename = qemuDomainRename, /* 1.2.19 */
.domainMigrateStartPostCopy = qemuDomainMigrateStartPostCopy, /* 1.3.3 */
.domainGetGuestVcpus = qemuDomainGetGuestVcpus, /* 2.0.0 */
.domainSetGuestVcpus = qemuDomainSetGuestVcpus, /* 2.0.0 */
.domainSetVcpu = qemuDomainSetVcpu, /* 3.1.0 */
.domainSetBlockThreshold = qemuDomainSetBlockThreshold, /* 3.2.0 */
.domainSetLifecycleAction = qemuDomainSetLifecycleAction, /* 3.9.0 */
.connectCompareHypervisorCPU = qemuConnectCompareHypervisorCPU, /* 4.4.0 */
.connectBaselineHypervisorCPU = qemuConnectBaselineHypervisorCPU, /* 4.4.0 */
.nodeGetSEVInfo = qemuNodeGetSEVInfo, /* 4.5.0 */
.domainGetLaunchSecurityInfo = qemuDomainGetLaunchSecurityInfo, /* 4.5.0 */
};
static virConnectDriver qemuConnectDriver = {
.localOnly = true,
.uriSchemes = (const char *[]){ "qemu", NULL },
.hypervisorDriver = &qemuHypervisorDriver,
};
static virStateDriver qemuStateDriver = {
.name = QEMU_DRIVER_NAME,
.stateInitialize = qemuStateInitialize,
.stateAutoStart = qemuStateAutoStart,
.stateCleanup = qemuStateCleanup,
.stateReload = qemuStateReload,
.stateStop = qemuStateStop,
};
int qemuRegister(void)
{
if (virRegisterConnectDriver(&qemuConnectDriver,
true) < 0)
return -1;
if (virRegisterStateDriver(&qemuStateDriver) < 0)
return -1;
return 0;
}