Yaniv,
Maybe you can look at
http://jenkins.ovirt.org/job/vdsm_master_check-merged-el7-x86_64/791/cons...
Unlike other, this was actually run by CI, and failed to start vdsm on
the lago host.
"A dependency job for vdsmd.service failed. See 'journalctl -xe' for
details."
The cause might be the beautifully-numbered
Bug 1400003 - imageio fails during system startup
but that's just a guess.
Yaniv, can you extract the journal from the VM to take a look?