On Friday 08 July 2005 09:44, Jon LaBadie wrote:
>On Fri, Jul 08, 2005 at 10:18:53AM +0200, MATILDA MATILDA wrote:
>> Hi all,
>>
>> After backup I run amverifyrun to check the backup. Now I have the
>> following situation and I don't know if this behaviour is intended
>> or I'm doing something wrong.
>
>brief synopsis:
> on a multi-tape run
> amverify notes an incomplete dump file at the end of a tape
> marks that as an error
> finds the complete dump file on the next tape
> does not remove the earlier error
> thus generates a report showing errors
>
>> My question: Is there a way to check that backup so that I get an
>> error when there is really an error in the backup set? In this
>> context error means to me that I probably can't restore alle
>> tar-files I backed up before.
>
>Seems to me that your desired behavior would be reasonable.
>
>It could be a real bear to test, having to read through entire tapes
>before getting to the test point.
>
>I hope someone with a vtape test setup can duplicate the problem and
>use that as a testbed instead.
I'm running vtapes here. This was indeed true the last time I tried
runtapes=2, Jon. There were also some other amverifyish housekeeping
problems whose details I don't recall now as that was several (6+)
months back up the log and none of the examples now exist.
To me, the obvious cure would be to remove the partial file, a piece
of cake in a vtape setup, but in a tape environment, that would
require keeping track of the fm's so that a backspace could be done
and the partial files header overwritten with an EOT marker & 32k
of /dev/zero before going on to the next tape in the magazine &
restarting the failed file. Thats a lot of wear and tear on both the
tape and the drive IMO, so the real cure should be done in amverify
itself.
The question then is: can amrecover/amrestore cope properly with this
scenario? I do not know, having never tested that exact scenario.
--
Cheers, Gene
"There are four boxes to be used in defense of liberty:
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-Ed Howdershelt (Author)
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Copyright 2005 by Maurice Eugene Heskett, all rights reserved.
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