linux-kernel - Re: New filesystem for Linux

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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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