From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from userp1040.oracle.com ([156.151.31.81]:22969 "EHLO userp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752956AbcKHCRq (ORCPT ); Mon, 7 Nov 2016 21:17:46 -0500 Date: Mon, 7 Nov 2016 18:17:23 -0800 From: "Darrick J. Wong" To: Adam Borowski Cc: Mark Fasheh , dsterba@suse.cz, James Pharaoh , linux-btrfs@vger.kernel.org Subject: Re: Announcing btrfs-dedupe Message-ID: <20161108021722.GA16801@birch.djwong.org> References: <2855552b-714c-d1de-08f9-89153c293772@wellbehavedsoftware.com> <20161107140200.GM12522@suse.cz> <20161107205409.GA20325@angband.pl> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: <20161107205409.GA20325@angband.pl> Sender: linux-btrfs-owner@vger.kernel.org List-ID: On Mon, Nov 07, 2016 at 09:54:09PM +0100, Adam Borowski wrote: > On Mon, Nov 07, 2016 at 09:48:41AM -0800, Mark Fasheh wrote: > > also on XFS with the dedupe ioctl (I believe this should be out with > > Linux-4.9). > > It's already there in 4.9-rc1, although you need a special version of > xfsprogs (possibly already released, I didn't check). It's an experimental > feature that needs to be enabled with "-m reflink=1". The code will be available in xfsprogs 4.9, due out after Linux 4.9. You'll still have to pass '-m reflink=1' to enable reflink until we declare the feature stable, however. > Despite that experimental status, I'd strongly recommend James to test his > tool on xfs as well, as it's the second major implementation of this API[1]. Agreed. :) > Mark has already included XFS in documentation of duperemove, all that looks > amiss is btrfs-extent-same having an obsolete name. But then, I never did > any non-superficial tests on XFS, beyond "seems to work". /me wonders if ocfs2 will ever catch up to the reflink/dedupe party. ;) --Darrick > > > Meow! > > [1]. For some reasons zfs-on-linux guys didn't implement this yet, despite > it being an obvious thing on ZFS. > -- > A MAP07 (Dead Simple) raspberry tincture recipe: 0.5l 95% alcohol, 1kg > raspberries, 0.4kg sugar; put into a big jar for 1 month. Filter out and > throw away the fruits (can dump them into a cake, etc), let the drink age > at least 3-6 months. > -- > To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html