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Message-ID: <alpine.LFD.2.00.1102281549050.5172@dhcp-27-109.brq.redhat.com> Date: Mon, 28 Feb 2011 15:50:09 +0100 (CET) From: Lukas Czerner <lczerner@...hat.com> To: Dave Young <hidave.darkstar@...il.com> cc: Josef Bacik <josef@...hat.com>, Theodore Tso <tytso@....edu>, linux-ext4@...r.kernel.org, Linux Kernel Mailing List <linux-kernel@...r.kernel.org> Subject: Re: ext2/3/4: punch support? On Mon, 28 Feb 2011, Dave Young wrote: > On Mon, Feb 28, 2011 at 9:11 PM, Josef Bacik <josef@...hat.com> 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@...r.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html >
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