From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from cantor2.suse.de ([195.135.220.15]:35982 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753363AbaLBN2n (ORCPT ); Tue, 2 Dec 2014 08:28:43 -0500 Date: Tue, 2 Dec 2014 14:28:42 +0100 From: David Sterba To: Shriramana Sharma Cc: Chris Murphy , linux-btrfs Subject: Re: Moving an entire subvol? Message-ID: <20141202132842.GT12140@twin.jikos.cz> Reply-To: dsterba@suse.cz References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: Sender: linux-btrfs-owner@vger.kernel.org List-ID: On Tue, Dec 02, 2014 at 08:51:40AM +0530, Shriramana Sharma wrote: > > openSUSE uses subvol id 5 for installing the OS to, and some > > directories are made subvolumes such as home var and maybe usr. > > Therefore when subvolid 5 is snapshot, those are exempt, and have to > > be individually snapshot. > > Yes I also noticed that openSUSE creates such separate subvols, but is > there any particular benefit to making it so? A subvolume is also a snapshotting barrier, so it's convenient to create subvolumes in well-known paths that contain data that should not be rolled back (/var/log, /srv, bootloader).