Hi Giulio,

To get to the root cause of this problem, I think it is best to look at the
engine and vdsm logs
from the initial failures with vprotect. You can open a new bug in BZ and
place the relevant logs there.

Thanks,
Mark

On Tue, Aug 30, 2022 at 10:25 AM Giulio Casella <giu...@di.unimi.it> wrote:

> Hi folks,
> since some month I have an issue with snapshot removals (I have storware
> vprotect backup system, heavily using snapshots).
> After some time spent on a bugzilla
> (https://bugzilla.redhat.com/show_bug.cgi?id=1948599) we discovered that
> my issue is not depending on that bug :-(
>
> So they pointed me here again.
>
> Briefly: sometime snapshot removal fails, leaving snapshot in illegal
> state. Trying to remove again (via ovirt UI) keeps failing and doesn't
> solve. The only way to rebuild a consistent situation is live migrating
> affected disk to another storage domain; after moving the disk, snapshot
> is no more marked illegal and then I can remove it. You can imagine this
> is a bit tricky, specially for large disks.
>
> In my logs I can find:
>
> 2022-08-29 09:17:11,890+02 ERROR
> [org.ovirt.engine.core.bll.MergeStatusCommand]
> (EE-ManagedExecutorService-commandCoordinator-Thread-1)
> [0eced56f-689d-422b-b15c-20b824377b08] Failed to live merge. Top volume
> f8f84b1c-53ab-4c99-a01d-743ed3d7859b is still in qemu chain
> [0ea89fbc-d39a-48ff-aa2b-0381d79d7714,
> 55bb387f-01a6-41b6-b585-4bcaf2ea5e32, f8f84b1c-53ab-4c99-a01d-743ed3d7859b]
>
>
> My setup is ovirt-engine-4.5.2.4-1.el8.noarch, with hypervisors based on
> oVirt Node 4.5.2 (vdsm-4.50.2.2-1.el8).
>
> Thank you in advance.
>
> Regards,
> gc
>
>
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