[Bacula-users] Please mount volume

Hello group,

Lately I have a rather annoying problem. I'm using bacula already for 
quite a long time with my AIT4 Changer without problems. I don't know 
exactly since when (maybe during upgrades), but lately backups are often 
failing and I don't know why. Bacula asks to mount a volume, for example :

06-Dec 03:21 bacula-sd JobId 16918: Please mount Volume "A082Y2" or label 
a new
one for:
      Job:          OblTape.2008-12-05_21.00.29
      Storage:      "AIT4-1" (/dev/nst0)
      Pool:         FridayPool-Tape
      Media type:   AIT4

However, update slots has been run before, the volume is in the changer, 
but it seems like Bacula doesn't run the mtx-changer script for one 
reason or so.

The problem is that this behaviour is not consequent. Sometimes the backup 
just works. When it doesn't work (and asks for a tape), then I try to type 
'mount', but then I just get the message 'OK Mount' but nothing happens. 
The same with umount.

I've tried running btape with the 'test' and the 'fill' command (complete 
test with 2 tapes) again, which works without problems and happily changes 
tapes.

Currently I'm using Bacula 2.4.3 with all the latest patches (incl. 
slots-patch).

This is my relevant bacula-sd.conf information for the autochanger:

Autochanger {
    Name = Autochanger
    Device = AIT4-1
    Changer Command = "/usr/local/bacula/etc/mtx-changer %c %o %S %a %d"
    Changer Device = /dev/sg0
}

Device {
    Name = AIT4-1
    Drive Index = 0
    Media Type = AIT4
    Archive Device = /dev/nst0
    AutomaticMount = yes;               # when device opened, read it
    AlwaysOpen = no;
    RemovableMedia = yes;
    RandomAccess = no;
    AutoChanger = yes;
    Alert Command = "sh -c 'tapeinfo -f /dev/sg0 |grep TapeAlert|cat'"
    Spool Directory = "/mnt/storage/spool"
}

I don't see any errors in the working log.

If anybody has an idea how I can try to find out further where the problem 
lies, or what I can do to debug things furher, please let me know.

Thanks!

K.


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