Bacula-users

Re: [Bacula-users] Change a volume from 'Error' to 'Append'

2014-05-21 08:33:56
Subject: Re: [Bacula-users] Change a volume from 'Error' to 'Append'
From: "Roberts, Ben" <Ben.Roberts AT gsacapital DOT com>
To: Korbinian Grote <grote AT genomatix DOT de>, "bacula-users AT lists.sourceforge DOT net" <bacula-users AT lists.sourceforge DOT net>
Date: Wed, 21 May 2014 12:57:08 +0100
Hi Korbinian,

I've observed similar issues in the past. A job fails part way through and the 
catalog is not updated leaving a mismatch in the number of files in the volume 
versus what's recorded in the catalog. This is then detected the next time the 
volume is used, and Bacula marks the volume as Error without writing anything 
to it.

Given the mismatch, the safest thing to do is mark the volume as Full, and wait 
for the retention period to expire so the volume can be recycled. Unfortunately 
this wastes space (more painful when you have 100GB volumes and it failed 
within the first few gig...), so you'll need to either have sufficient spare 
space on your SD that you can cope with this, or be willing to sacrifice the 
other jobs on the volume and delete jobs+purge or purge it immediately to 
regain the space.

I'm not sure how Bacula would behave if you change it straight to append; 
whether it would leave a hole in the volume, or whether this mismatch would 
corrupt subsequent jobs.

Regards,
Ben Roberts

> -----Original Message-----
> From: Korbinian Grote [mailto:grote AT genomatix DOT de]
> Sent: 21 May 2014 11:59
> To: bacula-users AT lists.sourceforge DOT net
> Subject: [Bacula-users] Change a volume from 'Error' to 'Append'
>
> Hi everyone.
>
> While I do have some basic knowledge of bacula (i.e. viewing logs, restoring
> files/folders, labeling volumes) I couldn't really find conclusive
> documentation on how to resolve the following situation:
>
> We're using bacula with a Tandberg tape library. One of the volumes (tapes)
> has a status of 'Error' when I do a 'list volumes'
> in bconsole. Looking at the logs at around the time of the 'Last written to'
> field, I can see that a - probably running job - got cancelled due to losing
> connection to the server. (Which coincides with a switch problem we had at
> that point, so that is probably what happened).
> The job had accessed two volumes but only one shows an 'Error' the other one
> is marked full. Querying the database I get 0 files and bytes written to
> either volume for the job.
>
> How do I go forward making the volume appendable again? (Assuming that the
> reason for the 'Error' is the interrupted job?)
>
> Thanks in advance,
>
> Korbinian
>
>
>
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