From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Mon, 10 Sep 2001 17:22:57 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Mon, 10 Sep 2001 17:22:46 -0400 Received: from chunnel.redhat.com ([199.183.24.220]:61946 "EHLO sisko.scot.redhat.com") by vger.kernel.org with ESMTP id ; Mon, 10 Sep 2001 17:22:36 -0400 Date: Mon, 10 Sep 2001 22:22:43 +0100 From: "Stephen C. Tweedie" To: "H. Peter Anvin" Cc: linux-kernel@vger.kernel.org, Stephen Tweedie Subject: Re: linux-2.4.10-pre5 Message-ID: <20010910222243.B9166@redhat.com> In-Reply-To: <9ngirh$jsu$1@cesium.transmeta.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5i In-Reply-To: <9ngirh$jsu$1@cesium.transmeta.com>; from hpa@zytor.com on Sun, Sep 09, 2001 at 01:18:57PM -0700 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Hi, On Sun, Sep 09, 2001 at 01:18:57PM -0700, H. Peter Anvin wrote: > The ideal way to run backups I have found is on filesystems which > support atomic snapshots -- that way, your backup set becomes not only > safe (since it goes through the kernel etc. etc.) but totally > coherent, since it is guaranteed to be unchanging. This is a major > win for filesystems which can do atomic snapshots, and I'd highly > encourage filesystem developers to consider this feature. It's already done. LVM's snapshot facility has the ability to ask the filesystem to quiesce itself into a consistent state before the snapshot is taken, and both Reiserfs and ext3 support that function. Cheers, Stephen