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Re: [Bacula-devel] bacula-sd hanging after tape gets full + unload (2.5.19)


On Thu, Dec 04, 2008 at 01:33:46PM +0100, Eric Bollengier wrote:
> > >
> > > Could you stop all daemons with a sigsegv to force a backtrace ?
> > > killall -SEGV bacula-sd bacula-dir
> > >
> > > (you will find 2 kind of file, *traceback and *bactrace in working
> > > directory)
> > >
> > > After, if you can put results to pastbin, it will give information about
> > > your problem.
> >
> > Ok, problems again.. here are the tracebacks:
> >
> > http://pasik.reaktio.net/bacula/debug/bacula-sd-traceback.txt
> > http://pasik.reaktio.net/bacula/debug/bacula-dir-traceback.txt
> >
> > Here's what I did to make bacula-sd hang:
> >
> > 1. Rebooted the bacula server and the tape library
> > 2. Fresh after the reboot made sure mtx and bacula mtx-changer work OK.
> > 3. Started bacula
> > 4. Ran a job that copies jobs from disk pool to tape pool
> > 5. Bacula starts a bunch of jobs, but nothing happens.. bacula-sd is stuck.
> >
> > Any ideas how to debug this further?
> 
> Thanks for this traceback, it's very useful, i have found a problem in the 
> code.
> 
> in bool DCR::can_i_write_volume() we have :
>    lock_read_volumes();
>    vol = find_read_volume(VolumeName);
> 
> And the first step of find_read_volume() is to call lock_read_volumes(). And 
> this lock is not recursive.
> 
> Now, i will take a look.
> 

Thanks. Good to hear those tracebacks helped.

If you want me to test patches, I'm happy to help.

-- Pasi

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