From mboxrd@z Thu Jan 1 00:00:00 1970 From: Luke S Crawford Subject: Re: LVM Snapshot Feature Date: 01 Aug 2008 10:15:18 -0400 Message-ID: References: <4DE0C34D8B0DA64C9585DC45C36EA03BAB0788@dewdfe1g.wdf.sap.corp> Reply-To: device-mapper development Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: In-Reply-To: <4DE0C34D8B0DA64C9585DC45C36EA03BAB0788@dewdfe1g.wdf.sap.corp> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: dm-devel-bounces@redhat.com Errors-To: dm-devel-bounces@redhat.com To: device-mapper development List-Id: dm-devel.ids "Bombardier, Pascal" writes: > In your opinion, does it make sense to be able to create non-persistent > snapshots ? > In the case of a filesystem backup, a non-persistent snapshot would be a > snapshot that we agree to lose in case of failure or reboot. If anything > happens, a server administrator would have to recreate a new snapshot > and then restart the backup. Considering the current failure mode when a snapshot becomes 'full' (that is, when I run out of space to remap changed blocks the snapshot becomes corrupted) this is the only way I currently feel comfortable using LVM snapshots at all, so personally, I think snapshots that did not persist through reboots would be quite useful.