Am 16.07.21 um 13:42 schrieb Pierre Bernhardt:
It was hard to find the reason, but it looks like on one tape on special 
position
the bacula-sd process is waiting for a non-interruptible IO from the drive.
The interesting point is, that it is the penultimate job of the tape.

The situation was so hard, if the bacula-sd would be restarted the process
is left as a zombie process (State Z) so only a full reboot of the system
helps to fix the issue.

I migrated all other jobs from this tape to another one (via a disk migration
step) so only the problem job is still active on this tape. I hope I won't
need this weekly backup job so in one year I will put the tape in the trash
bin.

So the reason is found and I don't want to find the exact reason why the
bacula-sd process never comes back. But it is reproducible so I can make
investigations more in detail if it is needed.

PS: Normally I mean a problem should never bring the system in such a state.
The process should die by itself in such a situation e.b. by a timeout or
something else and leave the system intact.

Cheers,
Pierre



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