From owner-freebsd-stable@FreeBSD.ORG  Fri Jan 19 10:30:47 2007
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Date: Fri, 19 Jan 2007 10:30:43 +0000
From: Dominic Marks <dom@helenmarks.co.uk>
To: freebsd-stable@freebsd.org
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Subject: Re: Read_dma timeout - FreeBSD 6-1
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On Fri, 19 Jan 2007 08:02:00 +0000
"Ikare.run" <ikare.run@gmail.com> wrote:

> Hi,
> 
> I've got some troubles with sata disks (Maxtor DiamondMax 10 160go) : 
> this is the second one I use in less than 1 month.
> 
> With the first one, I got more and more ofently TIMEOUT - READ_DMA 
> errors ... so I changed it last week (I thought the disk was broken) ! 
> And now, 10 days after installing the _new_ one, I re-get the sames 
> errors. They appear randomly ...
> 
> No log, no debug messages, just TIMEOUT - READ_DMA in dmesg
> 
> Is there some tools on FreeBSD to test the SATA controler or the disks ? 
>   Some known bugs in drivers ?
> Does anyone get the same problem ?
> 
> PS : when error occurs, the disk make a "click" !?!?

Sounds like it is dying. What controller is this attached to?
Have you tried another cable?

SMART reports are useful only if the error is
detectable / reported.

Dom