[Users] VM with stateless snapshot won't start

Dafna Ron dron at redhat.com
Thu Dec 5 12:56:52 UTC 2013

Martijn,Thank you for updating us on the solution, I really appreciate it.

Doron,do you know if there is a bug on this?

On 12/05/2013 12:01 PM, Martijn Grendelman wrote:
> Hello Dafna,
>> If a failure happened and the stateless vm has shut down without delete
>> of the snapshot, the next time you will try to run it we will try to
>> delete the snapshot.
>> from the engine log, it seems that there is a problem deleting the
>> snapshot because of quota.
>> can you please try to disable the quota and try to run the vm again?
> Quota were not enabled on this Data Center, I have never done anything
> with quota on oVirt. The 'quota' table was empty, and the 'quota_id'
> field on all VMs in the 'vm_static' table was NULL.
> Since it was seemingly trying to set the quota_id for this particular VM
> to '00000000-0000-0000-0000-000000000000', I manually inserted a record
> into the quota table using this ID. After that, I was able to start te
> VM. The quota_id field for the VM now contains a reference to this fake id.
>> Please note that the first time you will run it after disabling the
>> quota, the snapshot should be deleted but the vm will still not start.
>> only after the snapshot is deleted you will be able to run the vm again.
> Indeed, it took two attempts to start the VM.
> Question: is it harmful to leave the fake quota record with id
> '00000000-0000-0000-0000-000000000000' and the reference to it in the
> vm_static table in place?
> Cheers,
> Martijn.
>> On 12/05/2013 11:23 AM, Martijn Grendelman wrote:
>>> Hi,
>>>> After maintenance on a host, I am trying to start a VM that has been
>>>> running statelessly for a while. It refuses to start and Engine logs the
>>>> following:
>>>> 2013-12-05 11:59:18,125 INFO
>>>> [org.ovirt.engine.core.dal.dbbroker.auditloghandling.AuditLogDirector]
>>>> (pool-6-thread-48) Correlation ID: 43d49965, Job ID:
>>>> 0d943a6d-9d65-4ac1-89b7-139d30b4813c, Call Stack: null, Custom Event ID:
>>>> -1, Message: Failed to start VM WinXP, because exist snapshot for
>>>> stateless state. Snapshot will be deleted.
>>>> Should I submit a bug report for the poor English in this log line? ;-)
>>>> The 'Snapshots' tab for the VM doesn't show anything, but repeated
>>>> attempts to start the VM just show the same message in the log.
>>>> What can I do to start this VM?
>>> It seems I missed some info in the log that may well indicate the root
>>> cause of this issue. Please see attached log excerpt. A database query
>>> is failing due to a foreign key constraint violation.
>>> Please advise how to fix the database inconsistency.
>>> Regards,
>>> Martijn.
>>> _______________________________________________
>>> Users mailing list
>>> Users at ovirt.org
>>> http://lists.ovirt.org/mailman/listinfo/users

Dafna Ron

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