From mboxrd@z Thu Jan  1 00:00:00 1970
From: James Bottomley <James.Bottomley@SteelEye.com>
Subject: Re: aic79xx blowups in 2.6.8-1.521smp (RHAT)
Date: 04 Oct 2004 09:00:47 -0500
Sender: linux-scsi-owner@vger.kernel.org
Message-ID: <1096898453.1748.9.camel@mulgrave>
References: <E1CERtQ-0001CV-9T@www.linux.org.uk>
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To: Bryce as root <root@www.linux.org.uk>
Cc: SCSI Mailing List <linux-scsi@vger.kernel.org>

On Mon, 2004-10-04 at 07:24, Bryce as root wrote:
> kernel dmesg dump :
> Reseting Channel for LQI Phase error

This is clearly the cause of all the trouble.  The driver is a bit
opaque at this point, but it looks like an LQI phase error occurs
because of a phase mismatch during L_Q Information Units (These are a
requirement for fast-160 data transfers).

I think this is a strong indicator of bus instability ... could you try
falling back to fast-80 and turning off IU transfers (You'll probably
either have to use the card bios or dig around in the aic79xx driver for
the options).

James