I've not been able to reproduce, if happens again I'll submit a bugzilla.

Thank you.

Regards,
gc


On 03/02/2021 17:49, Shani Leviim wrote:
> In such a case, the disks shouldn't remain locked - sounds like a bug.
> This one requires a deeper look.
> If you're able to reproduce it again, please open a bug in Bugzilla
> (https://bugzilla.redhat.com <https://bugzilla.redhat.com>) with engine
> and vdsm logs,
> so we'll be able to investigate it.
> 
> *Regards,
> *
> *Shani Leviim
> *
> 
> 
> On Wed, Feb 3, 2021 at 5:39 PM Giulio Casella <[email protected]
> <mailto:[email protected]>> wrote:
> 
>     Hi,
>     I tried unlock_entity.sh, and it solved the issue. So far so good.
> 
>     But it's still unclear why disks were locked.
> 
>     Let me make an hypothesis: in ovirt 4.3 a failure in snapshot removal
>     would lead to a snapshot in illegal status. No problem, you can remove
>     again and the situation is fixed.
>     In ovirt 4.4 a failure in snapshot removal leave the whole disk in
>     locked state (maybe a bug?), preventing any further action.
> 
>     Does it make sense?
> 
> 
>     On 03/02/2021 12:25, Giulio Casella wrote:
>     > Hi Shani,
>     > no tasks listed in UI, and now "taskcleaner.sh -o" reports no task
>     (just
>     > before I gave "taskcleaner.sh -r").
>     > But disks are still locked, and "unlock_entity.sh -q -t all -c"
>     > (accordingly) reports only two disk's uuid (with their vm's uuid).
>     >
>     > Time to give a chance to unlock_entity.sh?
>     >
>     > Regards,
>     > gc
>     >
>     > On 03/02/2021 11:52, Shani Leviim wrote:
>     >> Hi Giulio,
>     >> Before running unlock_entity.sh, let's try to find if there's any
>     task
>     >> in progress.
>     >> Is there any hint on the events in the UI?
>     >> Or try to run [1]:
>     >> ./taskcleaner.sh -o  
>     >>
>     >> Also, you can verify what entities are locked [2]:
>     >> ./unlock_entity.sh -q -t all -c
>     >>
>     >> [1]
>     >>
>     
> https://github.com/oVirt/ovirt-engine/blob/master/packaging/setup/dbutils/taskcleaner.sh
>     
> <https://github.com/oVirt/ovirt-engine/blob/master/packaging/setup/dbutils/taskcleaner.sh>
>     >>
>     
> <https://github.com/oVirt/ovirt-engine/blob/master/packaging/setup/dbutils/taskcleaner.sh
>     
> <https://github.com/oVirt/ovirt-engine/blob/master/packaging/setup/dbutils/taskcleaner.sh>>
>     >> [2]
>     >>
>     
> https://github.com/oVirt/ovirt-engine/blob/master/packaging/setup/dbutils/unlock_entity.sh
>     
> <https://github.com/oVirt/ovirt-engine/blob/master/packaging/setup/dbutils/unlock_entity.sh>
>     >>
>     
> <https://github.com/oVirt/ovirt-engine/blob/master/packaging/setup/dbutils/unlock_entity.sh
>     
> <https://github.com/oVirt/ovirt-engine/blob/master/packaging/setup/dbutils/unlock_entity.sh>>
>     >>
>     >> *Regards,
>     >> *
>     >> *Shani Leviim
>     >> *
>     >>
>     >>
>     >> On Wed, Feb 3, 2021 at 10:43 AM Giulio Casella
>     <[email protected] <mailto:[email protected]>
>     >> <mailto:[email protected] <mailto:[email protected]>>> wrote:
>     >>
>     >>     Since yesterday I found a couple VMs with locked disk. I
>     don't know the
>     >>     reason, I suspect some interaction made by our backup system
>     (vprotect,
>     >>     snapshot based), despite it's working for more than a year.
>     >>
>     >>     I'd give a chance to unlock_entity.sh script, but it reports:
>     >>
>     >>     CAUTION, this operation may lead to data corruption and
>     should be used
>     >>     with care. Please contact support prior to running this command
>     >>
>     >>     Do you think I should trust? Is it safe? VMs are in production...
>     >>
>     >>     My manager is 4.4.4.7-1.el8 (CentOS stream 8), hosts are
>     oVirt Node
>     >>     4.4.4
>     >>
>     >>
>     >>     TIA,
>     >>     Giulio
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