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  1. 05 5月, 2015 5 次提交
    • C
      polkit: Allow password-less access for 'libvirt' group · e94979e9
      由 Cole Robinson 提交于 
      Many users, who admin their own machines, want to be able to access
system libvirtd via tools like virt-manager without having to enter
a root password. Just google 'virt-manager without password' and
you'll find many hits. I've read at least 5 blog posts over the years
describing slightly different ways of achieving this goal.

Let's finally add official support for this.

Install a polkit-1 rules file granting password-less auth for any user
in the new 'libvirt' group. Create the group on RPM install

https://bugzilla.redhat.com/show_bug.cgi?id=957300
      e94979e9
    • C
      storage: fs: Don't try to chown directory unless user requested · 28c547ed
      由 Cole Robinson 提交于 
      Currently we try to chown any directory passed to virDirCreate,
even if the user didn't request any explicit owner/group via the
pool/vol XML.

This causes issues with qemu:///session: try to build a pool of
a root owned directory like /tmp, and it fails trying to chown the
directory to the session user. Instead it should just leave things
as they are, unless the user requests changing permissions via
the pool XML.

Similarly this is annoying if creating a storage pool via system
libvirtd of an existing directory in user $HOME, it's now owned
by root.

The virDirCreate function is pretty convoluted, since it needs to
fork off in certain specific cases. Try to document that, to make
it clear where exactly we are changing behavior.
      28c547ed
    • C
      storage: fs: Don't attempt directory creation if it already exists · 262b3c05
      由 Cole Robinson 提交于 
      The current code attempts to handle this, but it only catches mkdir
failing with EEXIST. However if say trying to build /tmp for an
unprivileged qemu:///session, mkdir will fail with EPERM.

Rather than catch any errors, just don't attempt mkdir if the directory
already exists.
      262b3c05
    • C
      storage: fs: Fill in permissions on pool refresh · d6f8b35d
      由 Cole Robinson 提交于 
      This means pool XML actually reports accurate user/group/mode/label.

This uses UpdateVolTargetInfoFD in a bit of a hackish way, but it works
      d6f8b35d
    • C
      storage: fs: Don't overwrite virDirCreate error · 27a4c492
      由 Cole Robinson 提交于 
      virDirCreate will give us fine grained details about what actually failed.
      27a4c492
  3. 04 5月, 2015 20 次提交
  5. 01 5月, 2015 2 次提交
  7. 30 4月, 2015 6 次提交
  9. 29 4月, 2015 7 次提交
    • C
      domain: conf: Drop unused OSTYPE_AIX · 066f7c7c
      由 Cole Robinson 提交于 
      The phyp driver stuffed it into a DomainDefPtr during its attachdevice
routine, but the value is never advertised via capabilities so it should
be safe to drop.

Have the phyp driver use OSTYPE_LINUX, which is what it advertises via
capabilities.
      066f7c7c
    • M
      qemu: migration: use sync block job helpers · 99725f94
      由 Michael Chapman 提交于 
      In qemuMigrationDriveMirror we can start all disk mirrors in parallel.
We wait until they are all ready, or one of them aborts.

In qemuMigrationCancelDriveMirror, we wait until all mirrors are
properly stopped. This is necessary to ensure that destination VM is
fully in sync with the (paused) source VM.

If a drive mirror can not be cancelled, then the destination is not in a
consistent state. In this case it is not safe to continue with the
migration.
Signed-off-by: NMichael Chapman <mike@very.puzzling.org>
      99725f94
    • M
      qemuDomainBlockJobAbort: use sync block job helpers · 1e106fee
      由 Michael Chapman 提交于 
      The !modern code path needs to call qemuBlockJobEventProcess directly.
the modern code path will call it via qemuBlockJobSyncWait.
Signed-off-by: NMichael Chapman <mike@very.puzzling.org>
      1e106fee
    • M
      qemuProcessStop: wake up pending sync block jobs · 1ec03c87
      由 Michael Chapman 提交于 
      Other threads may be blocked in qemuBlockJobSyncWait. Ensure that
they're woken up when the domain is stopped.
Signed-off-by: NMichael Chapman <mike@very.puzzling.org>
      1ec03c87
    • M
      qemuBlockJobSync*: introduce sync block job helpers · 89a5e25d
      由 Michael Chapman 提交于 
      qemuBlockJobSyncBegin and qemuBlockJobSyncEnd delimit a region of code
where block job events are processed "synchronously".
qemuBlockJobSyncWait and qemuBlockJobSyncWaitWithTimeout wait for an
event generated by a block job.

The Wait* functions may be called multiple times while the synchronous
block job is active. Any pending block job event will be processed by
only when Wait* or End is called.  disk->blockJobStatus is reset by
these functions, so if it is needed a pointer to a
virConnectDomainEventBlockJobStatus variable should be passed as the
last argument. It is safe to pass NULL if you do not care about the
block job status.

All functions assume the VM object is locked. The Wait* functions will
unlock the object for as long as they are waiting. They will return -1
and report an error if the domain exits before an event is received.

Typical use is as follows:

  virQEMUDriverPtr driver;
  virDomainObjPtr vm; /* locked */
  virDomainDiskDefPtr disk;
  virConnectDomainEventBlockJobStatus status;

  qemuBlockJobSyncBegin(disk);

  ... start block job ...

  if (qemuBlockJobSyncWait(driver, vm, disk, &status) < 0) {
      /* domain died while waiting for event */
      ret = -1;
      goto error;
  }

  ... possibly start other block jobs
      or wait for further events ...

  qemuBlockJobSyncEnd(driver, vm, disk, NULL);

To perform other tasks periodically while waiting for an event:

  virQEMUDriverPtr driver;
  virDomainObjPtr vm; /* locked */
  virDomainDiskDefPtr disk;
  virConnectDomainEventBlockJobStatus status;
  unsigned long long timeout = 500 * 1000ull; /* milliseconds */

  qemuBlockJobSyncBegin(disk);

  ... start block job ...

  do {
      ... do other task ...

      if (qemuBlockJobSyncWaitWithTimeout(driver, vm, disk,
                                          timeout, &status) < 0) {
          /* domain died while waiting for event */
          ret = -1;
          goto error;
      }
  } while (status == -1);

  qemuBlockJobSyncEnd(driver, vm, disk, NULL);
Signed-off-by: NMichael Chapman <mike@very.puzzling.org>
      89a5e25d
    • M
      qemuBlockJobEventProcess: move to new source file · 206dbf3f
      由 Michael Chapman 提交于 
      We will want to use synchronous block jobs from qemu_migration as well,
so split this function out into a new source file.
Signed-off-by: NMichael Chapman <mike@very.puzzling.org>
      206dbf3f
    • P
      qemu: Validate available slot count for memory devices · a83b2e25
      由 Peter Krempa 提交于 
      While qemu would reject the configuration we can check whether it makes
sense to plug the device upfront.
      a83b2e25