On Thursday 31 December 2009 09:00:35 JanJaap Scholing wrote:
> > > Hi List,
> > > All most every night our storage daemon get stuck in a deadlock or
> > > something. In every case only a restart of the storage daemon is the
> > > only way to get the sd back to work. This is the case:
> > > We have 2 pools:
> > > Diskpool: contains disk backup volumes.Migratepool: contains the tape
> > > autochanger Every night between 17:00 and 6:00 the backups (150+
> > > systems) are made to the diskpool.Every day between 11:00 - until
> > > ready, all the backups made to the diskpool are copied to tape using a
> > > copy job.  At night some of the clients are set to make a backup
> > > directly to the migratepool. This are jobs with a large amount of data
> > > (200Gb +)In other words, at night backups are made to diskpool and
> > > migratepool at the same time. Most of the time the copy jobs (to
> > > migratepool) are not ready before he starts with normal backup jobs (to
> > > diskpool or migratepool). Normal this is no problem, bacula first makes
> > > normal backup jobs, and when ready he goes further with the copy jobs.
> > > But in our case this results in a deadlock.
> > > Do you have a suggestions to make this better and avoid deadlocks?
> >
> > This sounds relatively complicated and to answer would require some
> > detailed analysis of your configuration, which is "support" and we don't
> > do that on this list.
> >
> > > What can
> > > we do? Our bacula server is busy 24x7 make backups and copies. We are
> > > using bacula 3.0.3 and debian 5.
> >
> > Without having a valid backtrace, it is hard to give any specific advice
> > on deadlocks.  See the kaboom chapter of the manual for info on
> > backtraces. If we have a good backtrace and
>
> Ok, but bacula did not crash. So I don't think i could make a backtrace of
> this case.

Bacula does not need to crash to get a backtrace.  "See the kaboom chapter of 
the manual for info on backtraces."
 
>
> > I can say that we have corrected three or four deadlock conditions in the
> > SD in the current development version.  We do not intend to backport
> > these changes to the 3.0 branch though.  The current development version
> > will very likely be released before the end of the month.
>
> Do you mean the end of Januari 2010?

Yes, I jumped ahead a bit too quickly ...

>
> > If you are having serious problems, you might try getting the current
> > development version as it might resolve your problems.  At this moment,
> > the current git repo seems quite stable, but I caution you, this is a
> > development version, and so sometimes we make a small change and it
> > breaks a lot of stuff.  We still have more work to do before we
> > officially release it.  One major problem in trying the new version is
> > that it requires a database upgrade, and you cannot go back.  So I don't
> > recommend using it unless you *really* know Bacula extremely well.
> >
> > Best regards,
> >
> > Kern
>
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