Date: Wed, 29 Oct 2008 20:17:24 +0000
From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Oskar Liljeblad <oskar@osk.mine.nu>
Cc: Robert Hancock <hancockr@shaw.ca>, linux-kernel@vger.kernel.org
Subject: Re: sata errors with Seagate 1.5TB on AMD 780G/SB700 motherboard
Message-ID: <20081029201724.0a7d736e@lxorguk.ukuu.org.uk>
In-Reply-To: <20081029185856.GA8152@osk.mine.nu>
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	<20081029185856.GA8152@osk.mine.nu>
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O> Anyway Seagate (inofficially) claims it's a driver issue in Linux - from
> http://forums.seagate.com/stx/board/message?board.id=ata_drives&thread.id=2390&view=by_date_ascending&page=6

Well then perhaps they would care to share the information with us 8)

The HPA size reporting one is certinly Linux, the flush cache one I don't
think is. The fact Mac people report it and Seagate suggest workarounds
of the form of "don't use 33% of the disk" don't inspire confidence.

>   "We already know about the Linux issue, it is indeed a kernel error
>   causing the problem as it was explained to me by one of our developers."

Well if they'd care to explain it to linux-ide perhaps we can find a work
around. I would be cautious about disabling the write caching as it will
harm both performance and probably drive lifetime.

Alan
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