linux-kernel - Re: first one disk drops our of raid, then the other

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Message-ID: <18016.54466.838932.490284@notabene.brown>
Date:	Sat, 2 Jun 2007 12:24:02 +1000
From:	Neil Brown <neilb@...e.de>
To:	Brad Langhorst <brad@...ghorst.com>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: first one disk drops our of raid, then the other - I/O error on
	same sector. raid bug?

On Friday June 1, brad@...ghorst.com wrote:
> This is a debian stable system in production. Kernel 2.6.18.
> I upgraded the kernel from 2.6.8 to 2.6.18 about 2 weeks ago and saw no
> problems until today.
> 
> 
> May 30 12:58:00 bitc kernel: (scsi0:A:1:0): Unexpected busfree in
> Command phase

This error is not indicative of drive problems, but rather of
buss/controller problems.

The fact that identical problems hit both devices support this.  I
would suggest that you check all cable connections and re-seat the
SCSI card (if it is a separate card).  If the problem persists, look
at replacing hardware.

NeilBrown
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