linux-kernel - Re: SATA exceptions with 2.6.20-rc5

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Message-Id: <200701191505.33480.s0348365@sms.ed.ac.uk>
Date:	Fri, 19 Jan 2007 15:05:33 +0000
From:	Alistair John Strachan <s0348365@....ed.ac.uk>
To:	Jeff Garzik <jeff@...zik.org>
Cc:	Robert Hancock <hancockr@...w.ca>,
	Björn Steinbrink <B.Steinbrink@....de>,
	linux-kernel@...r.kernel.org, htejun@...il.com,
	jens.axboe@...cle.com
Subject: Re: SATA exceptions with 2.6.20-rc5

On Tuesday 16 January 2007 01:53, Jeff Garzik wrote:
> Robert Hancock wrote:
> > I'll try your stress test when I get a chance, but I doubt I'll run into
> > the same problem and I haven't seen any similar reports. Perhaps it's
> > some kind of wierd timing issue or incompatibility between the
> > controller and that drive when running in ADMA mode? I seem to remember
> > various reports of issues with certain Maxtor drives and some nForce
> > SATA controllers under Windows at least..
>
> Just to eliminate things, has disabling ADMA been attempted?
>
> It can be disabled using the sata_nv.adma module parameter.

Setting this option fixes the problem for me. I suggest that ADMA defaults off 
in 2.6.20, if there's still time to do that.

-- 
Cheers,
Alistair.

Final year Computer Science undergraduate.
1F2 55 South Clerk Street, Edinburgh, UK.
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