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Date: Tue, 16 Sep 2008 15:34:07 -0400
To: Jeremy Chadwick <koitsu@freebsd.org>, Clint Olsen <clint.olsen@gmail.com>
From: Mike Tancsa <mike@sentex.net>
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Cc: stable@freebsd.org
Subject: Re: Help debugging DMA_READ errors
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At 02:54 PM 9/16/2008, Jeremy Chadwick wrote:

>However, there's no sign of DMA errors in the SMART log.  I'm not sure
>what to make of that; I really would expect there to be some.

Would not bad cables (or trays) be consistent with symptoms like that 
? i.e. the OS sees errors, but when we ask the drive, it says, "what 
errors".  I am sure there are other things that could cause this, but 
in the past I would start with the cables and or trays.

         ---Mike