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Message-Id: <1162730244.31873.5.camel@localhost.localdomain>
Date: Sun, 05 Nov 2006 12:37:24 +0000
From: Alan Cox <alan@...rguk.ukuu.org.uk>
To: Brad Campbell <brad@...p.net.au>
Cc: James Courtier-Dutton <James@...erbug.co.uk>,
Albert Cahalan <acahalan@...il.com>, kangur@...com.net,
mikulas@...ax.karlin.mff.cuni.cz, linux-kernel@...r.kernel.org
Subject: Re: New filesystem for Linux
Ar Sul, 2006-11-05 am 15:27 +0400, ysgrifennodd Brad Campbell:
> I've never seen this behaviour in a drive. All the drives I've seen mark bad sectors as "pending
> reallocation", they they return read errors on that sector unless they manage to jag a good read, in
> which case they then reallocate the sector. Or else they wait for you to write to the sector
> triggering a reallocation.
If a drive finds a sector has a high amount of error but readable it can
certainly relocate it and I'd hope it does it atomically as a
transaction. You wouldn't see it as unlike SCSI the ATA world doesn't
have an "I got your sector and did a rewrite" return code
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