linux-kernel - Re: [Patch] document ext3 requirements (was Re: [RFD] Incremental fsck)

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Message-ID: <20080116200528.4629ad80@lxorguk.ukuu.org.uk>
Date:	Wed, 16 Jan 2008 20:05:28 +0000
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Bryan Henderson <hbryan@...ibm.com>
Cc:	"Daniel Phillips" <phillips@...gle.com>,
	"Al Boldi" <a1426z@...ab.com>, "David Chinner" <dgc@....com>,
	linux-kernel@...r.kernel.org, "Pavel Machek" <pavel@....cz>,
	"Rik van Riel" <riel@...hat.com>, "Theodore Tso" <tytso@....edu>,
	"Valerie Henson" <val.henson@...il.com>
Subject: Re: [Patch] document ext3 requirements (was Re: [RFD] Incremental
 fsck)

> And I think there's a problem with drives that, upon sensing the 
> unreadable sector, assign an alternate even though the sector is fine, and 
> you eventually run out of spares.

You are assuming drives can't tell the difference between stray data loss
and sectors that can't be recovered by rewriting and reuse. I was under
the impression modern drives could do this ?

Alan
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