hi 

ok, last month i bought a LTO-4 from Quantum for a customer. I 
successfully made the btape tests and a test backup/restore. 

then i ran the backup job - successful, the verifyjob (volume to catalog 
- pins5) - successfull. 

Now i try to restore some files. It reads from the first tape - OK. On 
the second tape i get the following after a whil with dmesg:

st0: Add. Sense: Unrecovered read error
st0: Sense Key : Medium Error [current]
st0: Add. Sense: Unrecovered read error
st0: Sense Key : Medium Error [current]
st0: Add. Sense: Unrecovered read error
st0: Sense Key : Medium Error [current]
st0: Add. Sense: Unrecovered read error


last lines of bacula joblog:

18-Jul 19:42 bacula-sd JobId 794: Error: block.c:994 Read error on fd=5 
at file:blk 14:10608 on device "LTO-4" (/dev/nst0). ERR=Input/output 
error.
18-Jul 19:42 bacula-fd JobId 794: Error: attribs.c:421 File size of 
restored file /archive/restore/transfer/bogusfile.dpx not correct. 
Original 8302592, restored 1769472.
18-Jul 19:42 bacula-dir JobId 794: Error: Bacula bacula-dir 2.2.8 
(26Jan08): 18-Jul-2008 19:42:17
  Build OS:               x86_64-pc-linux-gnu debian 4.0
  JobId:                  794
  Job:                    RestoreFilesFromArchive.2008-07-18_17.35.35
  Restore Client:         bacula-fd
  Start time:             18-Jul-2008 17:35:46
  End time:               18-Jul-2008 19:42:17
  Files Expected:         24,763
  Files Restored:         15,423
  Bytes Restored:         55,496,768,057
  Rate:                   7310.9 KB/s
  FD Errors:              1
  FD termination status:  Error
  SD termination status:  Error
  Termination:            *** Restore Error ***

18-Jul 19:42 bacula-dir JobId 794: Begin pruning Jobs.
18-Jul 19:42 bacula-dir JobId 794: No Jobs found to prune.
18-Jul 19:42 bacula-dir JobId 794: Begin pruning Files.
18-Jul 19:42 bacula-dir JobId 794: No Files found to prune.
18-Jul 19:42 bacula-dir JobId 794: End auto prune.


Is it really possible that a new media (once written and backup job 
checked with verify) could already be DAMAGED?

i've rerun the job, same error... 

and is there some way to tell bacula to not stop on filesize mismatch on 
restore?

- Thomas




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