On 07/10/2012 10:53 AM, Martin Simmons wrote:
>>>>>> On Mon, 09 Jul 2012 12:55:14 -0700, Stephen Thompson said:
>>
>> On 07/09/12 11:37, Martin Simmons wrote:
>>>>>>>> On Fri, 06 Jul 2012 11:12:35 -0700, Stephen Thompson said:
>>>>
>>>> On 07/06/2012 11:01 AM, Martin Simmons wrote:
>>>>>>>>>> On Thu, 05 Jul 2012 11:35:15 -0700, Stephen Thompson said:
>>>>>>
>>>>>> Hello again,
>>>>>>
>>>>>> Here's something even stranger... Another Full job logs that it's
>>>>>> written to a volume in the Full pool (FB0956), but then the status
>>>>>> output of the job lists a volume in the Incremental pool (IM0093). This
>>>>>> Incremental volume was never even mentioned in the log as a volume to
>>>>>> which the job despooled.
>>>>>
>>>>> It could be a database problem (the volumes listed in the status output
>>>>> come
>>>>> from a query). What is the output of the sql commands below?
>>>>>
>>>>> SELECT VolumeName,JobMedia.* FROM JobMedia,Media WHERE
>>>>> JobMedia.JobId=242323 AND JobMedia.MediaId=Media.MediaId;
>>>>>
>>>>> SELECT MediaId,VolumeName FROM Media WHERE Media.VolumeName in
>>>>> ('IM0093','FB0956');
>>>>>
>>>>
>>>> Looks like it did in fact write to the Incremental tape IM0093 instead
>>>> of the requested Full tape BUT logged that it wrote to a Full tape
>>>> FB0956. This begs the questions 1) Why is it writing to a tape in
>>>> another pool? and 2) Why is logging that it wrote to a different tape
>>>> than it did?
>>>
>>> You could verify that IM0093 contains the data by using bls -j with the tape
>>> loaded (but not mounted in Bacula).
>>>
>>> It looks like you have concurrent jobs (non-consecutive JobMediaId values).
>>> Was another job trying to use IM0093? Maybe IM0093 was in another drive and
>>> Bacula mixed up the drives somehow?
>>
>>
>> Yes, I believe that FB0956 was in one drive and IM0093 in the other,
>> though I do not understand how bacula 'mixed up' which volume to use, or
>> which drive a particular volume was in.
>>
>> Not sure how closely related this is, but I've seen cases occasionally
>> where bacula will say that it cannot mount a certain volume in Drive0
>> and requires user intervention, only to find that the volume requested
>> is already mounted and in use in Drive1 by other jobs. So it is
>> possible for bacula either to lose track of which drive a volume is in
>> or to not be sure if a volume is already in use.
>>
>> I did a partial restore of the job and it did in fact load and read off
>> IM0093 successfully. So in some sense I know what happened, I just
>> don't know why it happened or how to prevent it (other than isolating
>> jobs, but that defeats the point of concurrency).
>
> You could try upgrading to 5.2.10. If that doesn't fix it, then reporting it
> in the bug tracker might be the next step
> (http://www.bacula.org/en/?page=bugs).
>
Already upgraded. We'll see if it happens again.
thanks,
Stephen
> __Martin
>
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--
Stephen Thompson Berkeley Seismological Laboratory
step...@seismo.berkeley.edu 215 McCone Hall # 4760
404.538.7077 (phone) University of California, Berkeley
510.643.5811 (fax) Berkeley, CA 94720-4760
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