[ale] DAT Tape Data Recovery

[Benjie Godfrey]

Jonathan Glass wrote:
> Good morning.
> 
> A researcher walked in this morning and handed me a Fuji Film "DG-90MAA"
> (90Meter tape) and wants the data off of it.  I've tried tar, cpio,
> dump/restore.  Any suggestions on what else to try?  I always backup
> using tar, so my cpio and restore syntax may be wrong, but the fact that
> I'm getting tape read errors from all three commands makes me nervous.
> 
> TIA
> 
> mt recognizes the tape:
> 
> # mt status
> SCSI 2 tape drive:
> File number=0, block number=0, partition=0.
> Tape block size 512 bytes. Density code 0x13 (DDS (61000 bpi)).
> Soft error count since last status=0
> General status bits on (45010000):
>  BOT WR_PROT ONLINE IM_REP_EN
> 

You might try " mt setblk 0."  This sets the drive in variable block 
size mode.  I have experienced the same error messages when reading 
tapes from different platforms on a linux box, and that mt command 
corrected my problems.

Benjie

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