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..
I don't see any IO errors in dmesg and/or messages.
-- Pasi
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