From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751216AbVIWUMj (ORCPT ); Fri, 23 Sep 2005 16:12:39 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751221AbVIWUMj (ORCPT ); Fri, 23 Sep 2005 16:12:39 -0400 Received: from smtp003.mail.ukl.yahoo.com ([217.12.11.34]:27220 "HELO smtp003.mail.ukl.yahoo.com") by vger.kernel.org with SMTP id S1751216AbVIWUMi (ORCPT ); Fri, 23 Sep 2005 16:12:38 -0400 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=yahoo.it; h=Received:From:To:Subject:Date:User-Agent:Cc:References:In-Reply-To:MIME-Version:Content-Type:Content-Transfer-Encoding:Content-Disposition:Message-Id; b=Mn7KzVKL22O0liDPhSraZtzubR60WjKvfWBDht2cFo5MODNP0YH2yGn7NMybTkBaUi8TLmsZHQ2ZnQ0sHt/PVpJpQfcl4B7eLiJ8RugAkpAcOVLNz7aGkjN3U1BWFMisnxItO8xuRbwCQMPPvLQtKaCQYvKTJpQ9dWO0epAb9Z4= ; From: Blaisorblade To: Alasdair G Kergon Subject: Writing on DM snapshots, and having no "mainstream" device (was: Re: Fw: [PATCH 1/7] Add dm-snapshot tutorial in Documentation) Date: Fri, 23 Sep 2005 22:11:31 +0200 User-Agent: KMail/1.8.2 Cc: LKML , user-mode-linux-devel@lists.sourceforge.net, user-mode-linux-user@lists.sourceforge.net References: <20050920163433.6081be3b.akpm@osdl.org> <20050921154846.GW18976@agk.surrey.redhat.com> In-Reply-To: <20050921154846.GW18976@agk.surrey.redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200509232211.32238.blaisorblade@yahoo.it> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Wednesday 21 September 2005 17:48, Alasdair G Kergon wrote: > On Tue, Sep 20, 2005 at 04:34:33PM -0700, Andrew Morton wrote: > > ack? > > Applied some quick corrections to this. I'm now looking at this, but you've done an error. You say that You must create the snapshot-origin device before you can create snapshots. This is totally wrong. The whole point of my document is to show that you can create snapshots *WITHOUT* having a snapshot-origin device (yes, I did it). And while the LVM setup (with snapshot-origin) is often used and well known, the possibility to do without the snapshot-origin, and more important to write on the snapshots, is something which is not widely known at all. In fact, UML community has been using an in-house version of the same feature, which cannot be mounted on the host due to missing code. > See also http://people.redhat.com/agk/talks/FOSDEM_2005/ > (slides 15-27) Not yet had time to look at those, sorry. > You might like to convert some of those diagrams to ASCII > and include them? If you feel like doing this, ok, but I'm not normally a documentor. > Alasdair -- Inform me of my mistakes, so I can keep imitating Homer Simpson's "Doh!". Paolo Giarrusso, aka Blaisorblade (Skype ID "PaoloGiarrusso", ICQ 215621894) http://www.user-mode-linux.org/~blaisorblade ___________________________________ Yahoo! Mail: gratis 1GB per i messaggi e allegati da 10MB http://mail.yahoo.it