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

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Message-ID: <20080115220528.139da08a@bree.surriel.com>
Date:	Tue, 15 Jan 2008 22:05:28 -0500
From:	Rik van Riel <riel@...hat.com>
To:	"Daniel Phillips" <phillips@...gle.com>
Cc:	"Pavel Machek" <pavel@....cz>,
	"Alan Cox" <alan@...rguk.ukuu.org.uk>,
	"Theodore Tso" <tytso@....edu>, "Al Boldi" <a1426z@...ab.com>,
	"Valerie Henson" <val.henson@...il.com>,
	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [Patch] document ext3 requirements (was Re: [RFD] Incremental
 fsck)

On Tue, 15 Jan 2008 20:44:38 -0500
"Daniel Phillips" <phillips@...gle.com> wrote:

> Along with this effort, could you let me know if the world actually
> cares about online fsck?  Now we know how to do it I think, but is it
> worth the effort.

With a filesystem that is compartmentalized and checksums metadata,
I believe that an online fsck is absolutely worth having.

Instead of the filesystem resorting to mounting the whole volume
read-only on certain errors, part of the filesystem can be offlined
while an fsck runs.  This could even be done automatically in many
situations.

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