[ovirt-users] Migration of CentOS 6.5 VMs causes kernel panic after upgrading to oVirt 3.4.3

[s k]

Hello,

I upgraded oVirt yesterday from 3.4.2 to 3.4.3 and performed a yum upgrade on all ovirt nodes as well without rebooting any of them.

After completing the upgrade, I tried to perform manual migration of VMs to a different host. The result was that all Windows 2003/2008  and CentOS 5 VMs were migrated successfully without any issues but all CentOS 6.5 VMs crashed although migration was completed successfully.

By looking the console of the CentOS 6.5 VMs I noticed that a few seconds after migration was complete, all the processes were killed, many out of memory errors were thrown as well as messages like "virtio_balloon virtio3: Out of puff! Cant' get 256 pages" and the VM ended up in kernel panic so I had to perform a manual poweroff and start the VM again.

Any ideas of what might be the cause? I have opened an urgent Bug for this (https://bugzilla.redhat.com/show_bug.cgi?id=1123274)

Thank you,

Sokratis




 		 	   		  
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