> AFAIK this change comes from oVirt. They recently started to use
> persistently defined VMs for their actions, but they define them before
> use. And undefine them after done.
> 
> I presume that they delete all inactive persistent VMs they find as
> a way to "clean up" after themselves rather than just those they've
> created.
> 
> I presume their rationale is that oVirt is the only thing that should
> deal with libvirt on the oVirt hypervisor node, but that sounds flawed.

Thank you for your help, I managed to find the offending lines in the log and, yes, unfortunately you seem to be right.  I will take it up in the oVirt bug tracker.

Thanks again,

Andy