From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from outrelay08.libero.it ([212.52.84.112]:36100 "EHLO outrelay08.libero.it" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755268Ab3KZRpA (ORCPT ); Tue, 26 Nov 2013 12:45:00 -0500 Message-ID: <5294DE1A.8010305@libero.it> Date: Tue, 26 Nov 2013 18:44:58 +0100 From: Goffredo Baroncelli Reply-To: kreijack@inwind.it MIME-Version: 1.0 To: Konstantinos Skarlatos CC: linux-btrfs@vger.kernel.org Subject: Re: [PATCH] BTRFS-PROG: recursively subvolume snapshot and delete References: <1384621747-25441-1-git-send-email-kreijack@inwind.it> <5293BFD1.6000502@libero.it> <5294BA6D.5080006@gmail.com> In-Reply-To: <5294BA6D.5080006@gmail.com> Content-Type: text/plain; charset=UTF-8 Sender: linux-btrfs-owner@vger.kernel.org List-ID: On 2013-11-26 16:12, Konstantinos Skarlatos wrote: > On 25/11/2013 11:23 μμ, Goffredo Baroncelli wrote: >> Hi all, >> >> nobody is interested in these new features ? > Is this ZFS-style recursive snapshotting? If yes, i am interested, and > thanks for your great work :) No it is not equal. My recursive snapshotting is not atomic as the ZFS one; every subvolume snapshot is atomic, but each snapshot is taken at different time. BR G.Baroncelli >> >> On 2013-11-16 18:09, Goffredo Baroncelli wrote: >>> Hi All, >>> >>> the following patches implement the recursively snapshotting and >>> deleting of a subvolume. >>> >>> To snapshot recursively you must pass the -R switch: >>> >>> # btrfs subvolume create sub1 >>> Create subvolume './sub1' >>> # btrfs subvolume create sub1/sub2 >>> Create subvolume 'sub1/sub2' >>> >>> # btrfs subvolume snapshot -R sub1 sub1-snap >>> Create a snapshot of 'sub1' in './sub1-snap' >>> Create a snapshot of 'sub1/sub2' in './sub1-snap/sub2' >>> >>> To recursively delete subvolumes, you must pass the switch '-R': >>> >>> # btrfs subvolume create sub1 >>> Create subvolume './sub1' >>> # btrfs subvolume create sub1/sub2 >>> Create subvolume 'sub1/sub2' >>> >>> # btrfs subvolume delete -R sub1 >>> Delete subvolume '/root/sub1/sub2' >>> Delete subvolume '/root/sub1' >>> >>> >>> Some caveats: >>> 1) the recursively behaviour need the root capability >>> This because how the subvolume are discovered >>> >>> 2) it is not possible to recursively snapshot a subvolume >>> in read-only mode >>> This because when a subvolume is snapshotted, its >>> nested subvolumes appear as directory in the snapshot. >>> These directories are removed before snapshotting the >>> nested subvolumes. This is incompatible with a read >>> only subvolume. >>> >>> BR >>> G.Baroncelli >>> >>> -- >>> 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 >>> >> > > -- > 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 > -- gpg @keyserver.linux.it: Goffredo Baroncelli (kreijackATinwind.it> Key fingerprint BBF5 1610 0B64 DAC6 5F7D 17B2 0EDA 9B37 8B82 E0B5