[ovirt-users] VMs changing to unknown state

[Michael Watters]

I have an ovirt host running ovirt 4.0 which keeps putting the VMs
running on that host into an unknown state.  I checked the vdsm logs and
there are several errors similar to below.

Mar 20 10:16:11 ovirt-node-production3.example.com vdsm[17123]: vdsm root ERROR Unhandled exception
Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/vdsm/utils.py", line 372, in wrapper
    return f(*a, **kw)
  File "/usr/share/vdsm/virt/migration.py", line 624, in run
    self.monitor_migration()
  File "/usr/share/vdsm/virt/migration.py", line 657, in monitor_migration
    job_stats = self._vm._dom.jobStats()
  File "/usr/lib/python2.7/site-packages/vdsm/virt/virdomain.py", line 69, in f
    ret = attr(*args, **kwargs)
  File "/usr/lib/python2.7/site-packages/vdsm/libvirtconnection.py", line 123, in wrapper
    ret = f(*args, **kwargs)
  File "/usr/lib/python2.7/site-packages/vdsm/utils.py", line 917, in wrapper
    return func(inst, *args, **kwargs)
  File "/usr/lib64/python2.7/site-packages/libvirt.py", line 1387, in jobStats
    if ret is None: raise libvirtError ('virDomainGetJobStats() failed', dom=self)
libvirtError: Requested operation is not valid: domain is not running

Restarting vdsmd resolves the issue however I would like to resolve the
issue permanently.  Does anybody know what would cause this?