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From: "Clayton Milos" <clay@milos.co.za>
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Date: Fri, 19 Jan 2007 05:35:30 +0100
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Subject: Re: Read_dma timeout - FreeBSD 6-1
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> 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" !?!?
>
> -- 
> Ivan Kurzweg
> Web : http://www.kurzweg.info
>
>

Hi Ivan

Sounds like  power problem to me. Perhaps there is not enough power for the 
drive.
Best advice I could give is not to use Maxtor. They have known problems with 
many models and in my opinion are not good hard drives.

-Clay