I have noticed that some of our Windows VM's (2012 - 2022) randomly won't boot when reboot is initiated from guest OS. As far as I can tell this started happening after we raised the cluster compatibility from 4.4 to 4.5 (it's 4.6 now). To fix it a VM needs to be stopped and started.

We are running oVirt 4.4.10. 

I cannot really see much from the logs if grepping for a specific VM that had these issues.

Example VM ID is: daf33e97-a76f-4b82-b4f2-20fa4891c88b

Im attaching logs:

- Initial hypervisor where VM was running on (reboot is initiated at 4:06:38 AM): vdsm-1.log
- Second hypervisor where VM was started after it was stopped and started back (this was done 7:45:43 AM): vdsm-2.log
- Engine log: engine.log

Has someone noticed any similar issues and can provide some feedback / help?