VM start timeout after snapshot deleted

[Mrt12]

Hi guys,
I have a Windows VM where I had one old snapshot. Today, I wanted to migrate the VM to another PVE node, and this gave me the following error:

Cannot migrate VM with local CD/DVD.

The reason was that the VM had a DVD drive while I made the snapshot, but now I removed the DVD drive. Still I could not move the VM, so I decided to remove that snapshot. This worked well, and now the error disappeared. However, before I migrated the VM, I wanted to test whether it still boots nicely, so I tried to start it. However, I got an error: could not start VM - got timeout.

Why is this and how can I resolve it? my PVE node now seems to be locked up somehow, I cannot watch the console of other VMs and I cannot start the VM I wanted to migrate.

Further, when I choose the Migrate button, I cannot select the target storage for the disk images. I think this was possible previously.

What can I do to resolve the lockup issue?

 

[oguz]

hi,

the following could be useful for debugging:

* systemctl | grep failed

if you see any failed services: systemctl status FAILED_SERVICE replace FAILED_SERVICE with the name of the service

* qm showcmd VMID

* qm config VMID

 

[mailinglists]

If just one VM in locked, use qm unlock VMID or something like this...

 

[Mrt12]

Hi guys,
sorry for my late reply.
I tried qm unlock and it didn't help.

However, I didn't reboot the server since approx. 180 days, and because I have a cron job which does regular updates, the system was updated but still running an "older" kernel. For some reason this resulted in different problems, but after a reboot everything was fine again.