Hi community. Centos 6.4 w/Ovirt 3.3.0-0.5.rc.el6. I have been having the same issue for a few months. (I thought it was just me.) For me, when I reboot, atleast ~50% of my VMs are gone. When I drill down to check the disks associated with the missing VMS them all show illegal states. I thought it might be hardware related so I replaced all my disks, and still have the same issue each time I reboot. It's gotten so bad that that before complete my patch/maint window by rebooting to test updates -- I have to export all the disks to an external LUN just to make sure, and then detach it from oVirt. I then re-import that LUN as an export share (via NFS) to get themn back into the system. Very very strange. Anyways, it till happens to me being fully upated as of 9/20/2013.