How long time for a rollback?

[Inlakesh]

Hello

I wonder how long time it could take for a rollback of a snapshot of about 45GB?

 

[spirit]

depend of the storage. (zfs, ceph rbd, lvm ,...)

 

[Inlakesh]

If it is zfs?

 

[spirit]

for zfs, it should be almost instantaneous.

 

[Inlakesh]

So I think something is wrong with the rollback I currently trying to do. can it be cause I do it live?
Is there some way to see how far the current process is?

 

[spirit]

The vm is stopped when the rollback occur. Is it a vm ? If yes , do you have a Snapshot with vm state memory ?

 

[Inlakesh]

Edit: No, the VM was active when I did the snapshot, and the snapshot was done with vm state memory.

 

[Inlakesh]

The rollback has been going for 2.5 hours now... is this normal?

 

[spirit]

The rollback has been going for 2.5 hours now... is this normal?

mmm, no.
Do you have log ?

The zfs disk rollback should be fast.
If you have memory state snapshot, the state file is also read to fill the vm memory.

(But, until you have 500GB memory state snasphot and a super slow disk, it shouldn't take 2,5 hours)

 

[Inlakesh]

How to I get to show the log? I am quite new to proxmox, so my knowledge is very limited.

 

[Inlakesh]

I stopped the rollback as nothing happened, seemed to be in a loop or something, anyway, restarted the KVM and looking thru the OS that was installed, seems it rolled back to the snapshot I was trying... very strange.

 

[spirit]

I stopped the rollback as nothing happened, seemed to be in a loop or something, anyway, restarted the KVM and looking thru the OS that was installed, seems it rolled back to the snapshot I was trying... very strange.

as I said, disk rollback should be instant. but maybe it has take a lot of time to read the vmstate file. (both are 2 different things).

you can also see the task log, simply by double click on the running task on the bottom panel.

 

[Inlakesh]

as I said, disk rollback should be instant. but maybe it has take a lot of time to read the vmstate file. (both are 2 different things).

you can also see the task log, simply by double click on the running task on the bottom panel.

Ok, I understand, I think.

I looked at that task many times, but it didn't show anything.

Feels good though, it rolled back and everything is working again, I will hesitate to use this way of snapshot the next time...

Thanks for your effort trying to guide me, I appreciate that.