Amanda-Users

Re: amverify reports problems

2007-08-21 10:28:12
Subject: Re: amverify reports problems
From: "Dustin J. Mitchell" <dustin AT zmanda DOT com>
To: Paul Lussier <pll+amanda AT permabit DOT com>
Date: Tue, 21 Aug 2007 09:27:50 -0500
On Tue, Aug 21, 2007 at 10:20:49AM -0400, Paul Lussier wrote:
> So, I'm fairly confident that this file system was not properly backed
> up.  More disturbing to me though, are the 2 or more tapes which
> reported "Too many errors".  Is this a problem with the tape, the
> drive, or amanda?  And how do I prove which one it is?  I'm leaning
> towards the tapes, but haven't ruled out the drive.

It sounds like you have the right probabilities assigned.  You can rule
out Amanda by using tools like 'mt' and 'dd' to manipulate tapes -- both
the tapes in question and new tapes which haven't demonstrated these
errors before.  

It's worth noting that amverify is basically a shell script that uses
these tools itself.  The "0+0 in" lines are from 'dd', and indicate that
it couldn't read anything from the tape at that particular point.

Dustin

-- 
        Dustin J. Mitchell
        Storage Software Engineer, Zmanda, Inc.
        http://www.zmanda.com/

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