Based on the IRC discussion it seems to me as a bug in Engine. But we
will need more information to tackle that. Please open a bug on
ovirt-engine.
Please also enable debug logs in VDSM and attach engine.log and vdsm.log
from the time the VM started to the time of the snapshot.
Thanks,
Tomas
--
Tomáš Golembiovský <tgolembi(a)redhat.com>