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:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
99.35% setiathome rank, not too shabby for a WV hillbilly
Yahoo.com and AOL/TW attorneys please note, additions to the above
message by Gene Heskett are:
Copyright 2005 by Maurice Eugene Heskett, all rights reserved.