Hi,
14.05.2008 14:30, Tobias Barth wrote:
> Hi,
>
> I am using bacula 2.2.8, SuSE linux 10.1 and a Benchmark DLT1 tape
> drive. Today, a backup which spans multiple tapes failed because of a
> tape error. I could not unmount the tape, and bacula-sd told to the
> director: "Device /dev/nst0 is busy in acquire." Which obviously was
> wrong, because the tape did nothing any more.
Still, from Bacula's point of view, the status might be correct.
> I gave up the hope that I
> could proceed the backup with a new tape now, stopping bacula in order
> to get rid of the stuck bacula-sd process. Now, bacula-sd is a zombie
> process and still occupies the tape device.
Is there anything in the system log regarding SCSI problems?
A zombie process usually indicates this process is either still
blocked by outstanding I/O requests, or can't be finally terminated
because the parent process is still busy. Or something similar... so,
what you describe, sounds more like a general OS, kernel, SCSI driver
or tape hardware problem.
> I think this is a bug. When a tape error occurs (which is quite normal
> because tape are mechanical parts and those errors should be handled by
> software), bacula-sd should unmount the tape and wait for a new
> appendable tape to be mounted.
Which is what Bacula usually does, more or less. It handles a tape
error just like and end of media situation.
> Bacula should then rewind the backup to
> the position before the failed tape,
That's not what Bacula does, and there are some reasons for it.
> so the operator can throw the
> failed tape away and replace it by a better one without losing data.
Arno
> Greetings,
>
> Tobias Barth
--
Arno Lehmann
IT-Service Lehmann
www.its-lehmann.de
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