From: "Mike Snitzer" Subject: Re: Online ext4 defragmention Date: Mon, 12 Jan 2009 09:44:17 -0500 Message-ID: <170fa0d20901120644g3f208430y46d129facbebb38b@mail.gmail.com> References: <20090111134443.581cfc83@lithium.local.net> <20090111202838.GA29383@mit.edu> <170fa0d20901120539w4e3bbc03na39f01edde206d25@mail.gmail.com> <20090112141539.GD21793@mit.edu> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: "Alex Buell" , "Linux Kernel Mailing List" , linux-ext4@vger.kernel.org To: "Theodore Tso" Return-path: Received: from ey-out-2122.google.com ([74.125.78.24]:61196 "EHLO ey-out-2122.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755081AbZALOoU (ORCPT ); Mon, 12 Jan 2009 09:44:20 -0500 In-Reply-To: <20090112141539.GD21793@mit.edu> Content-Disposition: inline Sender: linux-ext4-owner@vger.kernel.org List-ID: On 1/12/09, Theodore Tso 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