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


On Thu, Nov 13, 2008 at 05:37:06PM +0100, Eric Bollengier wrote:
> Hello,
> 
> Le Thursday 13 November 2008 17:03:10 Pasi Kärkkäinen, vous avez écrit :
> > Hello list!
> >
> > I'm using Bacula 2.5.19 and trying 'copy jobs' feature to copy jobs from
> > disk volumes/pools to tape.
> >
> > Sometimes bacula-sd seems to get stuck.. it hangs without doing anything.
> > Now it happened when tape got full and Bacula started to change the tape on
> > the drive (using autoloader):
> >
> > bacula-sd JobId 3082: Start Copying JobId 3082,
> > Job=CopyPool4UncopiedToTape.2008-11-13_10.53.04.54 bacula-sd JobId 3082:
> > Using Device "IBM-LTO3-Drive"
> > bacula-sd JobId 3082: Ready to read from volume "Pool4-Vol-0127" on device
> > "FSDevice4" (/mnt/backup1/pool04). bacula-sd JobId 3082: Forward spacing
> > Volume "Pool4-Vol-0127" to file:block 0:218. bacula-sd JobId 3082: End of
> > Volume "756NNNL3" at 764:10067 on device "IBM-LTO3-Drive" (/dev/nst0).
> > Write of 64512 bytes got -1. bacula-sd JobId 3082: Re-read of last block
> > succeeded.
> > bacula-sd JobId 3082: End of medium on Volume "756NNNL3"
> > Bytes=725,237,130,240 Blocks=11,241,894 at 13-Nov-2008 11:51. bacula-sd
> > JobId 3082: 3307 Issuing autochanger "unload slot 3, drive 0" command.
> >
> > <nothing happens after this>
> >
> >
> > *sta
> > Status available for:
> >      1: Director
> >      2: Storage
> >      3: Client
> >      4: All
> > Select daemon type for status (1-4): 2
> >
> > ...
> >
> > Device status:
> > Autochanger "IBM-LTO3-AutoChanger" with devices:
> >    "IBM-LTO3-Drive" (/dev/nst0)
> > Device "FSDevice0" (/mnt/backup1/pool00) is not open.
> > Device "FSDevice1" (/mnt/backup1/pool01) is not open.
> > Device "FSDevice2" (/mnt/backup1/pool02) is not open.
> > Device "FSDevice3" (/mnt/backup1/pool03) is not open.
> > Device "FSDevice4" (/mnt/backup1/pool04) is mounted with:
> >     Volume:      Pool4-Vol-0127
> >     Pool:        Pool4
> >     Media type:  File4
> >     Total Bytes Read=1,649,507,328 Blocks Read=25,569 Bytes/block=64,512
> >     Positioned at File=0 Block=1,649,507,534
> > Device "IBM-LTO3-Drive" (/dev/nst0) is not open.
> >     Device is being initialized.
> >     Drive 0 is not loaded.
> > ====
> >
> > Used Volume status:
> >
> > <hangs here and nothing happens>
> >
> >
> > I can exit bconsole by pressing CTRL+C multiple times.. if I restart
> > bconsole and run that again, it gets stuck again..
> >
> > I tried 'strace -p <pid>' to see what bacula-sd is doing:
> >
> > # strace -p 7339
> > Process 7339 attached - interrupt to quit
> > select(5, [4], NULL, NULL, NULL <unfinished ...>
> > Process 7339 detached
> >
> > So.. bacula-sd seems to be stuck on select() ..
> >
> > Running 'mtx' seems to work fine.. at the same time when bacula-sd is
> > stuck.
> >
> > # mtx -f /dev/sg3 status
> >   Storage Changer /dev/sg3:1 Drives, 8 Slots ( 0 Import/Export )
> > Data Transfer Element 0:Empty
> >       Storage Element 1:Full :VolumeTag=179MMML3
> >       Storage Element 2:Full :VolumeTag=658NNNL3
> >       Storage Element 3:Full :VolumeTag=756NNNL3
> >       Storage Element 4:Full :VolumeTag=177MMML3
> >       Storage Element 5:Full :VolumeTag=655NNNL3
> >       Storage Element 6:Full :VolumeTag=656NNNL3
> >       Storage Element 7:Full :VolumeTag=657NNNL3
> >       Storage Element 8:Full :VolumeTag=CLNU38L1
> >
> >
> > Any ideas how to fix this? Other than restarting Bacula..
> 
> 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.
> 

Thanks for your reply.

Actually I already restarted Bacula..

I'll continue playing with it.. if it goes like earlier, I should be able to
get it stuck again..

-- Pasi

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