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Date:      Mon, 16 Sep 2002 20:08:04 -0700 (PDT)
From:      Don Lewis <dl-freebsd@catspoiler.org>
To:        ahd@kew.com
Cc:        stable@FreeBSD.ORG
Subject:   Re: vinum / 4.6.2 / mirrored drives
Message-ID:  <200209170308.g8H384wr014734@gw.catspoiler.org>
In-Reply-To: <20020916122410.9C5B8BA14@pandora.hh.kew.com>

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On 16 Sep, Drew Derbyshire wrote:

> In the past week, I've started seeing the following:
> 
>    (da0:ahc0:0:0:0): Invalidating pack
>    fatal :scratch.p1.s0 write error, block 16769125 for 1024 bytes
>    scratch.p1.s0: user buffer block 919388 for 1024 bytes

I think this can be caused by marginal power to the drive.  The voltages
may be sagging when more than one drive does a seek at the same time.
The drive gets upset and notifies the driver software.


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