>>>>> On Fri, 19 Nov 2010 16:52:25 +1300, Royce Brown said:
> 
>  Using bacula v 5.0.2 on A netbsd machine v 5.1 (64bit )
> 
> I have this strange problem when after a computer crash, the next time
> bacula tries to write to tape it gets the file count wrong by -1 file.
> No backups are running when the computer crashes.
> 
> The error is:
> 
> Error: Bacula cannot write on tape Volume "57" because:
> The number of files mismatch! Volume=70 Catalog=71
> 
> if I do a bscan of the tape. the end result looks like this, but the
> main point is it seems to agree with the catalog number
> 
> 19-Nov 13:39 bscan JobId 0: End of Volume at file 71 on device
> "BACKUP-LTO-1" (/dev/nrst1), Volume "57"
> bscan: bscan.c:337-5818 ========== JobId=0 ========
> 19-Nov 13:39 bscan JobId 0: End of all volumes.
> bscan: bscan.c:424 Record: SessId=0 SessTim=0 FileIndex=-6 Stream=0 len=0
> End of physical tape.
> bscan: bscan.c:637 End of all Volumes. VolFiles=71 VolBlocks=0
> VolBytes=59,378,195,110
> Records would have been added or updated in the catalog:
>       1 Media
>       1 Pool
>      95 Job
>  579697 File
> 
> Going into bconsole and reducing the file count by 1 allows the tape to
> be written to, but I suspect the last backup to the tape has now just
> been corrupted. 
> There are three tape drives on the machine (2 LTO4 & 1 DLT drives) and
> this happens to every tape in all drives. You  are unable to use those
> tapes again unit you fix the file number up or purge the tape.
> 
> Bacula works correctly in every other way I have successfully done
> multiple backups and restores.
> 
> Has anyone seen this kind of behaviour before or have any suggestions,
> any help would be much appreciated.

Maybe the TWO EOF setting is changing in the drive, e.g. being reset to some
default which doesn't match what Bacula expects.  Try using the mt geteotmodel
command (assuming netbsd has this) to check it.

__Martin

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