[Users] VM with stateless snapshot won't start

[Martijn Grendelman]

Gilad Chaplik schreef op 5-12-2013 13:48:
> hi Martijn,
> 
> Indeed we have a bug there, and we've already solved it [1].
> As long as you're not using quota, your workaround is great.
> If you'll decide to use quota you can contact me and we will see how to proceed.

Ok, thanks! I have no plans for using quota ATM.

Cheers,
Martijn.




> [1] http://gerrit.ovirt.org/#/c/21332/
> 
> ----- Original Message -----
>> From: "Martijn Grendelman" <martijn.grendelman at isaac.nl>
>> To: dron at redhat.com, "Doron Fediuck" <dfediuck at redhat.com>
>> Cc: users at ovirt.org
>> Sent: Thursday, December 5, 2013 2:01:44 PM
>> Subject: Re: [Users] VM with stateless snapshot won't start
>>
>> 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.
>>>>
>>>>
>>>>
>>>>
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>>>> Users at ovirt.org
>>>> http://lists.ovirt.org/mailman/listinfo/users
>>>
>>>
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