libvir: Xen error : Domain not found: xenUnifiedDomainLookupByName
Traceback (most recent call last):
  File "./migtest.py", line 8, in <module>
    print repr(c.migrate(d, libvirt.VIR_MIGRATE_LIVE, None, '10.0.0.110', 0))
  File "/usr/lib/python2.5/site-packages/libvirt.py", line 1508, in migrate
    if ret is None:raise libvirtError('virDomainMigrate() failed', conn=self)
libvirt.libvirtError: Domain not found: xenUnifiedDomainLookupByName