[Bacula-users] recover partial readable tape (was: I/O error with quantum lto-4)
2009-03-04 11:04:39
hi
i've found out, that the error on tape is between file 4 and 20. i can
successfull forward space to file 20 ("mt -f /dev/nst0 20").
reading from file 0 with "dd if=/dev/nst0 of=/dev/null bs=64512" works
until file 4 and 235MB.
Is there a way to "reassemble" the two parts of the file and reread them
with bacula? i've not found any option like "skip file 4 to 20" with the
bextract,bscan,bls tools
i've allready read the first part of the tape to a file and
tried to read it from there. No luck so far:
bls: match.c:249-0 add_fname_to_include prefix=0 gzip=0 fname=/
bls: butil.c:282 Using device: "/srv/backup/vtl" for reading.
04-Mar 16:50 bls JobId 0: Ready to read from volume "ARCHIVE-0000" on device
"FileStorage" (/srv/backup/vtl).
04-Mar 16:50 bls JobId 0: Error: block.c:275 Volume data error at 0:64511!
Wanted ID: "BB02", got "". Buffer discarded.
0 files found.
bls: acquire.c:436-0 dir_update_vol_info. label=64 Vol=ARCHIVE-0000
seems that not all data is in correct order. if i do a "strings ARCHIVE-0000":
BB02
Bacula 1.0 immortal
ARCHIVE-0000
Archive
Backup
LTO-4
backuphost
backuphost-sd
Ver. 2.2.8 26 January 2008
Build Mar 28 2008 17:04:06
...
so BB02 seems to be there.
anybody allready did such a tape reassembling?
or if any programmer is out there: is it a big task to implement a
"skip file(s)" option to the volume utilities?
- Thomas
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