On Tuesday 16 November 2004 11:53, Fabricio Luiz Machado wrote:
>Hi guys.
>I got an I/O error while trying to recover data from a tape with
>amrecover or amrestore.
>There is another way or command to recover my precious data ?
>
>ps.: This "my precious" reminds me Gollum... ;-)
>
>thanks in advance,
>
>Fabricio.

Yes, look in the indices to see where the last level 0 is for the 
stuff you need to recover.  Put that tape in the drive.

Rewind the tape with mt & check it with an mt status to make sure its 
ONLINE and BOT.

do: cd someplace where you have the tapes contents worth of scratchpad
space to fill up with the below operations.

do: dd if=/dev/nst0 bs=32768 count=1

It should spit out the tapes label block to your shells screen.

do: dd if=/dev/nst0 bs=32768 count=1

It should spit out the instructions and syntax required to recover the 
first file on the tape

do that

do: dd if=/dev/nst0 bs=32768 count=1

It should spit out the instructions to read the next file

do that

repeat as required till you have read what you needed, or hit the 
tapes EOT.  Put the next tape in and repeat until you are uptodate.  
Copy data back to original location.

Yes, its time consuming, but it works, I've done it a couple of times 
now.  You might need to change the device if your tape isn't 
on /dev/nst0, but make sure you are using a non-rewinding device 
as /dev/nst0 is.  On linux, its a 99% probability that its /dev/nst0.

If you feel really confident, you could cd to the directory that data 
came from in the first place, and just let tar overwrite whats there.
But I sure wouldn't do it the first time I tried it, Murphy is alive 
and well you know.

-- 
Cheers, Gene
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Copyright 2004 by Maurice Eugene Heskett, all rights reserved.