Hello,
On Thursday 21 April 2005 17:04, Marc Brueckner wrote:
> Hi there,
>
> I am running Bacula in a productive environment for almost two year now
> and I am totally happy with it.
>
> Now I have a little problem an perhaps one of you can help me.
>
> (For now this is a hypothetical question.)
> I need to restore a backup from a write protected tape.
> Bacula won't mount a write protected tape. bextract or bscan neither.
>
> "So switch off the write protect of your tape !" some one would say.
>
> The answer is " I can't" because the hardware protects the tape from
> being written.
> The tape was written by a DLT VS80 Streamer, now I ve upgraded to a DLT
> VS160.
> If I insert a VS80 written tape its automaticly read-only. So if my VS80
> streamer dies on day I have no chance
> to read the tapes by Bacula.
>
> I already tryed to dd if=/dev/st0 of=/tmp/tape.dump and tryed to
> bextract from the filedevice.
>
> btape then is able to read the label but bextract terminates with errors.
>
> Backup:/etc/bacula # bextract /tmp/ISLBHV_Woche_0 /restore
> bextract: butil.c:151 Using device: /tmp for reading.
> bextract: Ready to read from volume "ISLBHV_Woche_0" on device /tmp.
> bextract: bextract Error: block.c:248 Expected block-id BB01 or BB02,
> got . Buffer discarded.
> bextract: bextract Error: block.c:248 Expected block-id BB01 or BB02,
> got . Buffer discarded.
> bextract: bextract Error: Read error on Record Header /tmp: Success
> 0 files restored.
>
> I would be happy to have a solution because if my VS80 dies I will need it.
I haven't tried it, but I suspect the solution is to modify your Device
resource and set "Always Open = no", then run a restore. When the restore
runs, it should open the drive as read-only. When you have "Always Open =
yes", Bacula must open the drive read-write because it cannot know in advance
if you are going to do read or write operations.
If the above works, please let me know, and I will document it.
--
Best regards,
Kern
(">
/\
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