linux-kernel - Re: Online ext4 defragmention

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Message-ID: <170fa0d20901120644g3f208430y46d129facbebb38b@mail.gmail.com>
Date:	Mon, 12 Jan 2009 09:44:17 -0500
From:	"Mike Snitzer" <snitzer@...il.com>
To:	"Theodore Tso" <tytso@....edu>
Cc:	"Alex Buell" <alex.buell@...ted.org.uk>,
	"Linux Kernel Mailing List" <linux-kernel@...r.kernel.org>,
	linux-ext4@...r.kernel.org
Subject: Re: Online ext4 defragmention

On 1/12/09, Theodore Tso <tytso@....edu> wrote:
> On Mon, Jan 12, 2009 at 08:39:33AM -0500, Mike Snitzer wrote:
>  >
>  > Hi Ted,
>  >
>  > Could you elaborate on which allocation patches you're referring to in
>  > the ext4 patch queue (2.6.28-ext4-3?) ?
>
>
> They haven't been implemented yet.  They've been discussed on the ext4
>  mailing list, however.  Basically, the Orlov algorithm was disabled
>  for flex_bg, and I want to optimize how directory blocks are allocated
>  to hopefully speed up fsck times a tad bit more.  The design has been
>  roughly worked out; but it's a matter of me finding time to code and
>  test it...

Ah, that ext4 thread is here:
http://kerneltrap.org/mailarchive/linux-ext4/2008/12/12/4403324

Thanks for clarifying,
Mike
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