提交 88151c7c 编写于 作者: C Chris Lalancette

Snapshot virsh implementation.

Signed-off-by: NChris Lalancette <clalance@redhat.com>
上级 c572222a
......@@ -49,6 +49,7 @@
#include "console.h"
#include "util.h"
#include "memory.h"
#include "xml.h"
static char *progname;
......@@ -8174,6 +8175,449 @@ cmdQuit(vshControl *ctl, const vshCmd *cmd ATTRIBUTE_UNUSED)
return TRUE;
}
/*
* "snapshot-create" command
*/
static const vshCmdInfo info_snapshot_create[] = {
{"help", N_("Create a snapshot")},
{"desc", N_("Snapshot create")},
{NULL, NULL}
};
static const vshCmdOptDef opts_snapshot_create[] = {
{"domain", VSH_OT_DATA, VSH_OFLAG_REQ, N_("domain name, id or uuid")},
{"xmlfile", VSH_OT_DATA, 0, N_("domain snapshot XML")},
{NULL, 0, 0, NULL}
};
static int
cmdSnapshotCreate(vshControl *ctl, const vshCmd *cmd)
{
virDomainPtr dom = NULL;
int ret = FALSE;
char *from;
char *buffer = NULL;
virDomainSnapshotPtr snapshot = NULL;
xmlDocPtr xml = NULL;
xmlXPathContextPtr ctxt = NULL;
char *doc = NULL;
char *name = NULL;
if (!vshConnectionUsability(ctl, ctl->conn, TRUE))
goto cleanup;
dom = vshCommandOptDomain(ctl, cmd, NULL);
if (dom == NULL)
goto cleanup;
from = vshCommandOptString(cmd, "xmlfile", NULL);
if (from == NULL)
buffer = strdup("<domainsnapshot/>");
else {
if (virFileReadAll(from, VIRSH_MAX_XML_FILE, &buffer) < 0) {
/* we have to report the error here because during cleanup
* we'll run through virDomainFree(), which loses the
* last error
*/
virshReportError(ctl);
goto cleanup;
}
}
if (buffer == NULL) {
vshError(ctl, "%s", _("Out of memory"));
goto cleanup;
}
snapshot = virDomainSnapshotCreateXML(dom, buffer, 0);
if (snapshot == NULL)
goto cleanup;
doc = virDomainSnapshotGetXMLDesc(snapshot, 0);
if (!doc)
goto cleanup;
xml = xmlReadDoc((const xmlChar *) doc, "domainsnapshot.xml", NULL,
XML_PARSE_NOENT | XML_PARSE_NONET |
XML_PARSE_NOWARNING);
if (!xml)
goto cleanup;
ctxt = xmlXPathNewContext(xml);
if (!ctxt)
goto cleanup;
name = virXPathString("string(/domainsnapshot/name)", ctxt);
if (!name) {
vshError(ctl, "%s",
_("Could not find 'name' element in domain snapshot XML"));
goto cleanup;
}
vshPrint(ctl, _("Domain snapshot %s created"), name);
if (from)
vshPrint(ctl, _(" from '%s'"), from);
vshPrint(ctl, "\n");
ret = TRUE;
cleanup:
VIR_FREE(name);
xmlXPathFreeContext(ctxt);
if (xml)
xmlFreeDoc(xml);
if (snapshot)
virDomainSnapshotFree(snapshot);
VIR_FREE(doc);
VIR_FREE(buffer);
if (dom)
virDomainFree(dom);
return ret;
}
/*
* "snapshot-current" command
*/
static const vshCmdInfo info_snapshot_current[] = {
{"help", N_("Get the current snapshot")},
{"desc", N_("Get the current snapshot")},
{NULL, NULL}
};
static const vshCmdOptDef opts_snapshot_current[] = {
{"domain", VSH_OT_DATA, VSH_OFLAG_REQ, N_("domain name, id or uuid")},
{NULL, 0, 0, NULL}
};
static int
cmdSnapshotCurrent(vshControl *ctl, const vshCmd *cmd)
{
virDomainPtr dom = NULL;
int ret = FALSE;
int current;
virDomainSnapshotPtr snapshot = NULL;
if (!vshConnectionUsability(ctl, ctl->conn, TRUE))
goto cleanup;
dom = vshCommandOptDomain(ctl, cmd, NULL);
if (dom == NULL)
goto cleanup;
current = virDomainHasCurrentSnapshot(dom, 0);
if (current < 0)
goto cleanup;
else if (current) {
char *xml;
if (!(snapshot = virDomainSnapshotCurrent(dom, 0)))
goto cleanup;
xml = virDomainSnapshotGetXMLDesc(snapshot, 0);
if (!xml)
goto cleanup;
vshPrint(ctl, "%s", xml);
VIR_FREE(xml);
}
ret = TRUE;
cleanup:
if (snapshot)
virDomainSnapshotFree(snapshot);
if (dom)
virDomainFree(dom);
return ret;
}
/*
* "snapshot-list" command
*/
static const vshCmdInfo info_snapshot_list[] = {
{"help", N_("List snapshots for a domain")},
{"desc", N_("Snapshot List")},
{NULL, NULL}
};
static const vshCmdOptDef opts_snapshot_list[] = {
{"domain", VSH_OT_DATA, VSH_OFLAG_REQ, N_("domain name, id or uuid")},
{NULL, 0, 0, NULL}
};
static int
cmdSnapshotList(vshControl *ctl, const vshCmd *cmd)
{
virDomainPtr dom = NULL;
int ret = FALSE;
int numsnaps;
char **names = NULL;
int actual;
int i;
xmlDocPtr xml = NULL;
xmlXPathContextPtr ctxt = NULL;
char *doc = NULL;
virDomainSnapshotPtr snapshot = NULL;
char *state = NULL;
long creation;
char timestr[100];
struct tm time_info;
if (!vshConnectionUsability(ctl, ctl->conn, TRUE))
goto cleanup;
dom = vshCommandOptDomain(ctl, cmd, NULL);
if (dom == NULL)
goto cleanup;
numsnaps = virDomainSnapshotNum(dom, 0);
if (numsnaps < 0)
goto cleanup;
vshPrint(ctl, " %-20s %-25s %s\n", _("Name"), _("Creation Time"), _("State"));
vshPrint(ctl, "---------------------------------------------------\n");
if (numsnaps) {
if (VIR_ALLOC_N(names, numsnaps) < 0)
goto cleanup;
actual = virDomainSnapshotListNames(dom, names, numsnaps, 0);
if (actual < 0)
goto cleanup;
qsort(&names[0], actual, sizeof(char*), namesorter);
for (i = 0; i < actual; i++) {
/* free up memory from previous iterations of the loop */
VIR_FREE(state);
if (snapshot)
virDomainSnapshotFree(snapshot);
xmlXPathFreeContext(ctxt);
if (xml)
xmlFreeDoc(xml);
VIR_FREE(doc);
snapshot = virDomainSnapshotLookupByName(dom, names[i], 0);
if (snapshot == NULL)
continue;
doc = virDomainSnapshotGetXMLDesc(snapshot, 0);
if (!doc)
continue;
xml = xmlReadDoc((const xmlChar *) doc, "domainsnapshot.xml", NULL,
XML_PARSE_NOENT | XML_PARSE_NONET |
XML_PARSE_NOWARNING);
if (!xml)
continue;
ctxt = xmlXPathNewContext(xml);
if (!ctxt)
continue;
state = virXPathString("string(/domainsnapshot/state)", ctxt);
if (state == NULL)
continue;
if (virXPathLong("string(/domainsnapshot/creationTime)", ctxt,
&creation) < 0)
continue;
localtime_r(&creation, &time_info);
strftime(timestr, sizeof(timestr), "%F %T %z", &time_info);
vshPrint(ctl, " %-20s %-25s %s\n", names[i], timestr, state);
}
}
ret = TRUE;
cleanup:
/* this frees up memory from the last iteration of the loop */
VIR_FREE(state);
if (snapshot)
virDomainSnapshotFree(snapshot);
xmlXPathFreeContext(ctxt);
if (xml)
xmlFreeDoc(xml);
VIR_FREE(doc);
VIR_FREE(names);
if (dom)
virDomainFree(dom);
return ret;
}
/*
* "snapshot-dumpxml" command
*/
static const vshCmdInfo info_snapshot_dumpxml[] = {
{"help", N_("Dump XML for a domain snapshot")},
{"desc", N_("Snapshot Dump XML")},
{NULL, NULL}
};
static const vshCmdOptDef opts_snapshot_dumpxml[] = {
{"domain", VSH_OT_DATA, VSH_OFLAG_REQ, N_("domain name, id or uuid")},
{"snapshotname", VSH_OT_DATA, VSH_OFLAG_REQ, N_("snapshot name")},
{NULL, 0, 0, NULL}
};
static int
cmdSnapshotDumpXML(vshControl *ctl, const vshCmd *cmd)
{
virDomainPtr dom = NULL;
int ret = FALSE;
char *name;
virDomainSnapshotPtr snapshot = NULL;
char *xml = NULL;
if (!vshConnectionUsability(ctl, ctl->conn, TRUE))
goto cleanup;
dom = vshCommandOptDomain(ctl, cmd, NULL);
if (dom == NULL)
goto cleanup;
name = vshCommandOptString(cmd, "snapshotname", NULL);
if (name == NULL) {
vshError(ctl, "%s", _("missing snapshotname"));
goto cleanup;
}
snapshot = virDomainSnapshotLookupByName(dom, name, 0);
if (snapshot == NULL)
goto cleanup;
xml = virDomainSnapshotGetXMLDesc(snapshot, 0);
if (!xml)
goto cleanup;
printf("%s", xml);
ret = TRUE;
cleanup:
VIR_FREE(xml);
if (snapshot)
virDomainSnapshotFree(snapshot);
if (dom)
virDomainFree(dom);
return ret;
}
/*
* "revert-to-snapshot" command
*/
static const vshCmdInfo info_revert_to_snapshot[] = {
{"help", N_("Revert a domain to a snapshot")},
{"desc", N_("Revert domain to snapshot")},
{NULL, NULL}
};
static const vshCmdOptDef opts_revert_to_snapshot[] = {
{"domain", VSH_OT_DATA, VSH_OFLAG_REQ, N_("domain name, id or uuid")},
{"snapshotname", VSH_OT_DATA, VSH_OFLAG_REQ, N_("snapshot name")},
{NULL, 0, 0, NULL}
};
static int
cmdDomainRevertToSnapshot(vshControl *ctl, const vshCmd *cmd)
{
virDomainPtr dom = NULL;
int ret = FALSE;
char *name;
virDomainSnapshotPtr snapshot = NULL;
if (!vshConnectionUsability(ctl, ctl->conn, TRUE))
goto cleanup;
dom = vshCommandOptDomain(ctl, cmd, NULL);
if (dom == NULL)
goto cleanup;
name = vshCommandOptString(cmd, "snapshotname", NULL);
if (name == NULL) {
vshError(ctl, "%s", _("missing snapshotname"));
goto cleanup;
}
snapshot = virDomainSnapshotLookupByName(dom, name, 0);
if (snapshot == NULL)
goto cleanup;
if (virDomainRevertToSnapshot(snapshot, 0) < 0)
goto cleanup;
ret = TRUE;
cleanup:
if (snapshot)
virDomainSnapshotFree(snapshot);
if (dom)
virDomainFree(dom);
return ret;
}
/*
* "snapshot-delete" command
*/
static const vshCmdInfo info_snapshot_delete[] = {
{"help", N_("Delete a domain snapshot")},
{"desc", N_("Snapshot Delete")},
{NULL, NULL}
};
static const vshCmdOptDef opts_snapshot_delete[] = {
{"domain", VSH_OT_DATA, VSH_OFLAG_REQ, N_("domain name, id or uuid")},
{"snapshotname", VSH_OT_DATA, VSH_OFLAG_REQ, N_("snapshot name")},
{"children", VSH_OT_BOOL, 0, N_("delete snapshot and all children")},
{NULL, 0, 0, NULL}
};
static int
cmdSnapshotDelete(vshControl *ctl, const vshCmd *cmd)
{
virDomainPtr dom = NULL;
int ret = FALSE;
char *name;
virDomainSnapshotPtr snapshot = NULL;
unsigned int flags = 0;
if (!vshConnectionUsability(ctl, ctl->conn, TRUE))
goto cleanup;
dom = vshCommandOptDomain(ctl, cmd, NULL);
if (dom == NULL)
goto cleanup;
name = vshCommandOptString(cmd, "snapshotname", NULL);
if (name == NULL) {
vshError(ctl, "%s", _("missing snapshotname"));
goto cleanup;
}
if (vshCommandOptBool(cmd, "children"))
flags |= VIR_DOMAIN_SNAPSHOT_DELETE_CHILDREN;
snapshot = virDomainSnapshotLookupByName(dom, name, 0);
if (snapshot == NULL)
goto cleanup;
if (virDomainSnapshotDelete(snapshot, flags) < 0)
goto cleanup;
ret = TRUE;
cleanup:
if (snapshot)
virDomainSnapshotFree(snapshot);
if (dom)
virDomainFree(dom);
return ret;
}
/*
* Commands
*/
......@@ -8328,6 +8772,14 @@ static const vshCmdDef commands[] = {
{"vcpupin", cmdVcpupin, opts_vcpupin, info_vcpupin},
{"version", cmdVersion, NULL, info_version},
{"vncdisplay", cmdVNCDisplay, opts_vncdisplay, info_vncdisplay},
{"snapshot-create", cmdSnapshotCreate, opts_snapshot_create, info_snapshot_create},
{"snapshot-current", cmdSnapshotCurrent, opts_snapshot_current, info_snapshot_current},
{"snapshot-delete", cmdSnapshotDelete, opts_snapshot_delete, info_snapshot_delete},
{"snapshot-dumpxml", cmdSnapshotDumpXML, opts_snapshot_dumpxml, info_snapshot_dumpxml},
{"snapshot-list", cmdSnapshotList, opts_snapshot_list, info_snapshot_list},
{"revert-to-snapshot", cmdDomainRevertToSnapshot, opts_revert_to_snapshot, info_revert_to_snapshot},
{NULL, NULL, NULL, NULL}
};
......
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