On Sun, 03 Feb 2002 15:19, John R. Jackson wrote:
> >I was more than a little dismayed today to find that all of the backups I
> >have been doing are not recoverable.  ...
>
> Yeah, that kind of thing can really put an end to a perfectly good day.

> Could you post some examples of what you tried and the results?

>From the client, I tried amrecover, the indices seem fine as I was able to 
add the directory to bring back.  After the 'extract', it asked me for the 
correct tape which I loaded and then it skipped through till it reached the 
correct tape file and started restoring it.  tar then complained of an 
invalid header and said it was skipping to the next file.

Next, on the server, I tried an amrestore to local disk.  It died saying 
the compressed file was in the wrong format.  It had however restored about 
150Mb of the file (not enough for the bit I needed).  I then tried several 
other files from the tape and got similiar results.

Next I used dd to copy the file from the tape to disk and then tried to 
gunzip it. Boom... bad format.

It seems that all of the files, as written to tape have been corrupted 
somehow.

I wonder whether I have a scenario where the compressed tar is being 
compressed by the HW ( I have not explicitly turned H/W compression off or 
on, maybe the default on an 8505 is on! If so, how do I turn it off ? )

I have given up being able to recover anything written to date, but I really 
need to ensure that anything more written can be recovered from.
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Glen and Rosanne Eustace,
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