From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tomasz Chmielewski Subject: snapshot merging? Date: Sun, 21 Sep 2008 14:22:38 +0200 Message-ID: <48D63C8E.2060802@wpkg.org> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed To: linux-btrfs@vger.kernel.org Return-path: List-ID: At the beginning of August, Mikulas Patocka posted to linux-kernel mailing list about adding snapshot merging to LVM[1]. Basicaly, snapshot merging means that it is possible to turn a snapshot back into its origin. Using LVM, however, means that you need to have free place outside of the filesystem (i.e., in physical volume) to make snapshots, which is not always possible on workstations and some servers. Is something similar available, or planned, for btrfs? I didn't find anything similar on "btrfs design" page in the wiki. [1] http://kerneltrap.org/Linux/LVM_Snapshot_Merging -- Tomasz Chmielewski http://wpkg.org