Re: [Bacula-users] Bacula recognizes only 7 slots in an 8-slot-changer

[Jens G. <jen...@eb...>]

Zitat von John Drescher <dre...@gm...>:

> On Mon, Jun 25, 2012 at 10:30 AM, Jens Grüntjes  
> <jen...@eb...> wrote:
>> Hello list,
>>
>> I have a strange problem with a Tandberg Storage Loader (some kind of
>> autochanger) and bacula. I run Debian squeeze (Kernel 2.6.32-5-686)
>> and bacula 5.0.2 (shipped with Debian). The changer has 8 slots and is
>> attached to the computer via SCSI. Her is the output of lsscsi -g:
>>
>> boromir /etc/bacula/scripts # lsscsi -g
>> [0:0:0:0]    disk    AMCC     9500S-8    DISK  2.06  /dev/sda  /dev/sg0
>> [0:0:1:0]    disk    AMCC     9500S-8    DISK  2.06  /dev/sdb  /dev/sg1
>> [1:0:0:0]    cd/dvd  TOSHIBA  ODD-DVD SD-C2732 1051  /dev/sr0  /dev/sg2
>> [3:0:0:0]    tape    HP       Ultrium 4-SCSI   W51U  /dev/st0  /dev/sg3
>> [3:0:0:1]    mediumx TANDBERG StorageLoader    0347  /dev/sch0  /dev/sg4
>>
>> Until last week I defined a slot in the autochanger as a "Cleaning
>> Slot" so that I had 7 slots that could be used for backup-tapes. Then
>> I decided to clean the drive manually because I read that cleaning the
>> drive is actually not necessary. I could better use the slot for
>> another backup tape.
>>
>> So I redefined the former cleaning-slot to an ordinary slot in the
>> Tandberg autochanger. That was successfull because the front panel
>> indicated the cleaning-slot with a "C" which was gone and replaced by
>> an "8" (I defined the tape in slot 8 to be the cleaning tape).
>>
>> After that I started bconsole and issued an "update slots" command.
>> The output looks like this:
>>
>> boromir /etc/bacula/scripts # bconsole
>> Connecting to Director boromir.dmz:9101
>> 1000 OK: boromir-dir Version: 5.0.2 (28 April 2010)
>> Enter a period to cancel a command.
>> *update slots
>> Automatically selected Catalog: MyCatalog
>> Using Catalog "MyCatalog"
>> The defined Storage resources are:
>>      1: boromir-sd-100
>>      2: boromir-sd-1000
>> Select Storage resource (1-2): 2
>> Connecting to Storage daemon boromir-sd-1000 at 10.0.0.1:9103 ...
>> 3306 Issuing autochanger "slots" command.
>> Device "Tandberg" has 7 slots.
>> Connecting to Storage daemon boromir-sd-1000 at 10.0.0.1:9103 ...
>> 3306 Issuing autochanger "list" command.
>> Catalog record for Volume "WOC4-01L4" updated to reference slot 1.
>> Catalog record for Volume "WOC4-02L4" updated to reference slot 2.
>> Catalog record for Volume "WOC4-03L4" updated to reference slot 3.
>> Catalog record for Volume "WOC5-01L4" updated to reference slot 4.
>> Catalog record for Volume "WOC5-02L4" updated to reference slot 5.
>> Catalog record for Volume "WOC5-03L4" updated to reference slot 6.
>> Catalog record for Volume "WOC1-01L4" updated to reference slot 7.
>> *
>>
>> The strange line is the one that reads "Device "Tandberg" has 7
>> slots." because there are actually 8 slots.
>>
>> I reset the Tandberg autochanger to the default settings and rebooted
>> both the changer and the computer that it is attached to. There was no
>> change regarding the "update slots" command.
>>
>> The I tried to get the number of slots via:
>>
>> boromir /etc/bacula/scripts # ./mtx-changer /dev/sg4 slots
>> 7
>>
>> So, there are the 7 slots again.
>>
>> After some investigation I think it is not necessarily a problem with
>> bacula but could be a problem with the OS itself. But nevertheless I
>> hope you can help me on the issue. I can post config files as you
>> need, please tell me what you need.
>>
>> Does anyone of you know where I can set the number of slots or where
>> the number of slots is set by the OS?
>>
>
> I believe the problem is with mtx and probably how it handles your
> mail slot. Assuming your changer has that feature..
>
> John

What do you mean by a mail slot? I have some more output, maybe that  
helps anybody?

boromir /etc/bacula/scripts # mtx -f /dev/sg4 status
   Storage Changer /dev/sg4:1 Drives, 7 Slots ( 0 Import/Export )
Data Transfer Element 0:Empty
       Storage Element 1:Full :VolumeTag=WOC4-01L4
       Storage Element 2:Full :VolumeTag=WOC4-02L4
       Storage Element 3:Full :VolumeTag=WOC4-03L4
       Storage Element 4:Full :VolumeTag=WOC5-01L4
       Storage Element 5:Full :VolumeTag=WOC5-02L4
       Storage Element 6:Full :VolumeTag=WOC5-03L4
       Storage Element 7:Full :VolumeTag=WOC1-01L4

There is this "Data Transfer Element" which is empty. Is that maybe my  
"lost" slot?
-- 
Greetings
Jens