John Drescher wrote:
>> I use two pools to hold DDS-4 and DDS-3 tapes respectively. All tapes have 
>> been
>> labeled and registered in their respective pools. I use normally DDS-4 tapes 
>> for
>> daily back-ups and the DDS-3 for special purposes like manually initiated
>> back-ups of VMware vertual machines.
>>
>> I usually keep the current DDS-4 tape loaded and yesterday I had to reboot in
>> order to work on the next Linux (and Bacula) version. When I booted back to 
>> FC5
>> Bacula started as expected and mounted the loaded DDS-4 tape. However, what I
>> didn't see was that it assumed it belonged to the DDS-3 pool. The consequence
>> was that the daily back-ups failed with error messages which ment absolutely
>> nothing to me. It was not till I issued the "status storage" command that I 
>> saw
>> the error. An "unmount DDS-3" and a subsequent "mount DDS-4" cleared the 
>> problem.
>>
>> I have several questions to this experience:
>>
>> 1. Was it a bug?
> Probably but without the error message it is hard to tell.

OK. Here are the error messages:

09-Aug 01:12 epo-dir: Start Backup JobId 1787, Job=epowork.2007-08-09_01.12.20
09-Aug 01:21 epohost-sd: epowork.2007-08-09_01.12.20 Fatal error: dev.c:362 
dev.c:356 Unable to open device "DDS-4" (/dev/nst0): ERR=Device or resource busy
09-Aug 01:21 epohost-sd: epowork.2007-08-09_01.12.20 Fatal error: device.c:296 
Unable to open device "DDS-4" (/dev/nst0): ERR=dev.c:356 Unable to open device 
"DDS-4" (/dev/nst0): ERR=Device or resource busy

09-Aug 01:21 epowork-fd: epowork.2007-08-09_01.12.20 Fatal error: 
c:\cygwin\home\kern\bacula\k\src\win32\filed\../../filed/job.c:1602 Bad 
response 
to Append Data command. Wanted 3000 OK data
, got 3903 Error append data

09-Aug 01:21 epo-dir: epowork.2007-08-09_01.12.20 Error: Bacula 1.38.5 
(18Jan06): 09-Aug-2007 01:21:09
   JobId:                  1787
   Job:                    epowork.2007-08-09_01.12.20
   Backup Level:           Incremental, since=2007-08-08 00:16:02
   Client:                 "epowork-fd" Windows 2000,MVS,NT 5.0.2195
   FileSet:                "W2K Set" 2006-09-19 02:16:10
   Pool:                   "LargeTapes"
   Storage:                "DDS-4"
   Scheduled time:         09-Aug-2007 01:12:17
   Start time:             09-Aug-2007 01:12:22
   End time:               09-Aug-2007 01:21:09
   Priority:               10
   FD Files Written:       0
   SD Files Written:       0
   FD Bytes Written:       0
   SD Bytes Written:       0
   Rate:                   0.0 KB/s
   Software Compression:   None
   Volume name(s):
   Volume Session Id:      1
   Volume Session Time:    1186614658
   Last Volume Bytes:      2,690,855,970
   Non-fatal FD errors:    0
   SD Errors:              0
   FD termination status:  Error
   SD termination status:  Error
   Termination:            *** Backup Error ***

> 
>> 2. Could I have avoided it?
> Rewind or unmount the tape when booting.

That's what I've begun to do. I even unmount the tape as soon as the back-up is 
finished. However, I think Bacula should have seen that the tape was DDS-4 and 
have mounted it as such. Actually I prefer that Bacula would start without 
automounting a pre-loaded tape. Maybe there is an option for it but I haven't 
found it.
> 
>> 3. Is the way I use the two pools unreliable?
> No this is the correct way.

OK, good.
> 
>> 4. Why doesn't Bacula know which pool and storage a specific volume belong 
>> to?
>>
> It should. Did the DDS-4 tape have data on it? Did it rewind when the
> server went down?

Yes, it had data on it. And yes it did rewind when I took the system down. It 
did not "go down", it was an orderly shut down.

-- 
Erik.

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