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To: linux-kernel@vger.kernel.org
From: torvalds@transmeta.com (Linus Torvalds)
Subject: Re: bio too big device
Date: Wed, 12 Mar 2003 17:59:03 +0000 (UTC)
Organization: Transmeta Corporation
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In article <20030312154440.GA4868@win.tue.nl>,
Andries Brouwer  <aebr@win.tue.nl> wrote:
>On Wed, Mar 12, 2003 at 11:14:14AM +0100, Jens Axboe wrote:
>
>> So I still think it's much better stick with the safe choice. Why do you
>> think it's only one drive that has this bug? It basically boils down to
>> whether That Other OS uses 256 sector commands or not. If it doesn't, I
>> wouldn't trust the drives one bit.
>
>I am not quite sure I understand your reasoning.
>We have seen *zero* drives that do not understand 256 sector commands.
>Maybe such drives exist, but so far there is zero evidence.

That is definitely not true.  We definitely _have_ had drives that
misconstrue the 256-sector case. It's been a long time, but they
definitely exist.

The right limit for IDE is 255 sectors, and doing 256 sectors WILL fail
on some setups.

		Linus
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