Hi, 18.10.2007 15:49,, Markus Schulz wrote:: > hello, > i've done some mistake with a volume (Label TAPE001) of my dlt-v4 > tape-drive. > At first: my intention was to change the device of my storage daemon > from st0 to non-rewinding nst0. > Therefore i've unmounted the volume, changed the config and restarted > the storage daemon.
That should work without problems. > But after this i can't mount the volume again: > > ################## > *mount > Using default Catalog name=MyCatalog DB=bacula > The defined Storage resources are: > 1: File > 2: Tapes > Select Storage resource (1-2): 2 > 3902 Cannot mount Volume on Storage Device "/dev/nst0" because: > Requested Volume "" on /dev/nst0 is not a Bacula labeled Volume, > because: ERR=block.c:793 Read zero bytes at 0:0 on device /dev/nst0. > 3905 Device /dev/nst0 open but no Bacula volume is mounted. > If this is not a blank tape, try unmounting and remounting the Volume. > ################## > unmount and remount doesn't work too (as suggested). Bad. The tape is probably unuasble for restores. > *list volumes > Pool: Default > +---------+------------+-----------+-----------------+----------+--------------+---------+------+-----------+-----------+---------------------+ > | mediaid | volumename | volstatus | volbytes | volfiles | > volretention | recycle | slot | inchanger | mediatype | > lastwritten | > +---------+------------+-----------+-----------------+----------+--------------+---------+------+-----------+-----------+---------------------+ > | 5 | TAPE001 | Append | 329,255,094,597 | 535 | > 31,536,000 | 1 | 0 | 1 | VS160 | 2007-10-18 > 00:12:49 | > | 8 | TAPE002 | Full | 279,261,830,359 | 504 | > 31,536,000 | 1 | 0 | 1 | VS160 | 2007-07-01 > 08:23:57 | > | 9 | TAPE003 | Full | 327,895,771,225 | 532 | > 31,536,000 | 1 | 0 | 1 | VS160 | 2007-07-27 > 23:07:54 | > | 10 | TAPE004 | Full | 307,050,768,977 | 492 | > 31,536,000 | 1 | 0 | 1 | VS160 | 2007-08-19 > 14:51:04 | > | 11 | TAPE005 | Full | 328,204,187,588 | 524 | > 31,536,000 | 1 | 0 | 1 | VS160 | 2007-09-16 > 10:06:30 | > +---------+------------+-----------+-----------------+----------+--------------+---------+------+-----------+-----------+---------------------+ > > move forward to end-of-data results in: (did this makes sense without a > fixed block size?) Yes. No fixed block size implies variable block size, and this is handled by the drive itself, usually flawless... > # mt -f /dev/nst0 status > SCSI 2 tape drive: > File number=0, block number=0, partition=0. > Tape block size 0 bytes. Density code 0x51 (no translation). > Soft error count since last status=0 > General status bits on (41010000): > BOT ONLINE IM_REP_EN > > # mt -f /dev/nst0 eod > # mt -f /dev/nst0 status > SCSI 2 tape drive: > File number=1, block number=-1, partition=0. > Tape block size 0 bytes. Density code 0x51 (no translation). > Soft error count since last status=0 > General status bits on (9010000): > EOD ONLINE IM_REP_EN So there are no blocks on your tape. > Perhaps i've done another mistake with an misspelled "mt eod" as "mt > eof" (but without count). Looks like it, yes. > As i understand right this writes me [count] eof marker (without given > count => count=1?) Yes, according to mt(1L) here. > to current position(should be 0), perhaps this was > the problem for bacula cause the label was overwritten?) > > Was it possible to get the tape recognized again? Well, you can *try* to write a new label to the tape, not followed by an EOF mark, and it *could* result in your tape being usable again. I wouldn't try that, though, unless I really needed that tapes data. > If not, how can i reassing the same label (TAPE001) to it? Use btape's label command. With bconsole, then set the tape status to used, purge this tape, and it will be recycled when needed. > Is there in general a problem with changing the device from a rewinding > (stX) to a non-rewinding (nstX)? No, I don't think so. Arno -- Arno Lehmann IT-Service Lehmann www.its-lehmann.de ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ _______________________________________________ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users
