restore

[bob%anvil.UUCP at harvard.harvard.edu]

> My disk head has crashed.  I get my dump tapes.  The most recent full backup
> tape can not be read (tape errors).
> I get the next previous tape. I do a restore -r.  I then get the various
> incrementals up to that point where the full faulty dump was made. 
> I have now built the filesystem up to just before that
> dump which cannot be read.  I try to read the first incremental after
> that bad tape, but it can not be read (restore complains about dates...)
> 
> Am I lost?
> -- 
> | Michael Mc Namara              | Let the words by yours, I'm done with mine.
> | UUCP: dual!vecpyr!tflop!mac    | May your life proceed by its own design.
> | ARPA: tflop!mac at ames.arpa      |

I haven't used restore for a while but can't you extract individual
files off of the incremental tapes (or even the full backup up to
the point of the bad spot?

You might even be able to get past the bad spot on the full tape by
cleaning your tape drive, reading from another tape drive (preferably
better & probably more expensive), or using the dd program that
will continue reading past the bad spot and stuffing bytes of NULs for
unreadable blocks to stay in sync. I believe "dd conv=sync" will do
this.

Bob Toxen
Stratus Computer
{ucbvax!ihnp4,harvard}!anvil!bob
"values of dot give rise to dom"
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