From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from relay4-d.mail.gandi.net ([217.70.183.196]:40230 "EHLO relay4-d.mail.gandi.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754595Ab3BUPqR convert rfc822-to-8bit (ORCPT ); Thu, 21 Feb 2013 10:46:17 -0500 Received: from mfilter18-d.gandi.net (mfilter18-d.gandi.net [217.70.178.146]) by relay4-d.mail.gandi.net (Postfix) with ESMTP id 463F8172090 for ; Thu, 21 Feb 2013 16:46:16 +0100 (CET) Received: from relay4-d.mail.gandi.net ([217.70.183.196]) by mfilter18-d.gandi.net (mfilter18-d.gandi.net [10.0.15.180]) (amavisd-new, port 10024) with ESMTP id 7qG7+lhXH+x4 for ; Thu, 21 Feb 2013 16:46:14 +0100 (CET) Received: from [192.168.1.66] (AMontpellier-256-1-85-163.w90-28.abo.wanadoo.fr [90.28.140.163]) (Authenticated sender: swami@petaramesh.org) by relay4-d.mail.gandi.net (Postfix) with ESMTPSA id D265A1720E7 for ; Thu, 21 Feb 2013 16:46:14 +0100 (CET) Message-ID: <51264146.3070504@petaramesh.org> Date: Thu, 21 Feb 2013 16:46:14 +0100 From: =?ISO-8859-1?Q?Sw=E2mi_Petaramesh?= MIME-Version: 1.0 To: "BTRFS, Linux" Subject: Another defrag question Content-Type: text/plain; charset=ISO-8859-1 Sender: linux-btrfs-owner@vger.kernel.org List-ID: Hi again, Having numerous snapshots, I prefer to ask rather than take the risk of exploding my storage space, better safe than sorry ;-) "man btrfs" states : « NOTE: defragmenting with kernels up to 2.6.37 will unlink COW-ed copies of data, don't use it if you use snapshots, have deduplicated your data or made copies with cp --reflink. » I use : # uname -r 3.5.0-24-generic ...So should I expect that defraging my BTRFS will be smart enough not to uncow my snapshots ? Is it actually able to defrag both the file and its snapshots altogether, keeping all this as a single physical copy of the defragged data ? TIA. -- Swâmi Petaramesh http://petaramesh.org PGP 9076E32E Ne cherchez pas : Je ne suis pas sur Facebook.