Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754431Ab1B1OuQ (ORCPT ); Mon, 28 Feb 2011 09:50:16 -0500 Received: from mx1.redhat.com ([209.132.183.28]:23829 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754118Ab1B1OuP (ORCPT ); Mon, 28 Feb 2011 09:50:15 -0500 Date: Mon, 28 Feb 2011 15:50:09 +0100 (CET) From: Lukas Czerner X-X-Sender: lukas@dhcp-27-109.brq.redhat.com To: Dave Young cc: Josef Bacik , Theodore Tso , linux-ext4@vger.kernel.org, Linux Kernel Mailing List Subject: Re: ext2/3/4: punch support? In-Reply-To: Message-ID: References: <20110228131118.GA18193@dhcp231-156.rdu.redhat.com> User-Agent: Alpine 2.00 (LFD 1167 2008-08-23) MIME-Version: 1.0 Content-Type: MULTIPART/MIXED; BOUNDARY="571140353-850269878-1298904612=:5172" Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1685 Lines: 50 This message is in MIME format. The first part should be readable text, while the remaining parts are likely unreadable without MIME-aware tools. --571140353-850269878-1298904612=:5172 Content-Type: TEXT/PLAIN; charset=UTF-8 Content-Transfer-Encoding: 8BIT On Mon, 28 Feb 2011, Dave Young wrote: > On Mon, Feb 28, 2011 at 9:11 PM, Josef Bacik wrote: > > On Mon, Feb 28, 2011 at 03:03:40PM +0800, Dave Young wrote: > >> Hi, josef and ext guys > >> > >> Do you have any plan with ext4 hole punching support? And the > >> fallocate for ext2/3? > >> > >> What's the obstacle to work on this? could someone tell the status of > >> this issue? > > > > There is no obstacle, just nobody has bothered to do it.  If you want to do it > > go for it.  Thanks, > > Yes, I want to do some kvm image space discard stuff, > I use ext4 as my filesystem, but currently only xfs support something > like trim/discard. Ext4 supports discard as well, actually batched discard support was added into ext4 before xfs :) Thanks! -Lukas > > I know general knowledge about ext filesystem, but nearly new to ext4 code, > could you give some hint where to start? > > -- > Thanks > dave > -- > To unsubscribe from this list: send the line "unsubscribe linux-ext4" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > --571140353-850269878-1298904612=:5172-- -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/