Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932750Ab3CTPAZ (ORCPT ); Wed, 20 Mar 2013 11:00:25 -0400 Received: from mail-ie0-f169.google.com ([209.85.223.169]:52638 "EHLO mail-ie0-f169.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752022Ab3CTPAX convert rfc822-to-8bit (ORCPT ); Wed, 20 Mar 2013 11:00:23 -0400 Date: Wed, 20 Mar 2013 01:54:53 -0500 From: Rob Landley Subject: Re: Tux3 Report: Initial fsck has landed To: Martin Steigerwald Cc: tux3@phunq.net, Daniel Phillips , "Theodore Ts'o" , "Darrick J. Wong" , David Lang , linux-kernel@vger.kernel.org, tux3@tux3.org, linux-fsdevel@vger.kernel.org References: <20130129014000.GA7003@thunk.org> <201303200000.33356.Martin@lichtvoll.de> In-Reply-To: <201303200000.33356.Martin@lichtvoll.de> (from Martin@lichtvoll.de on Tue Mar 19 18:00:32 2013) X-Mailer: Balsa 2.4.11 Message-Id: <1363762493.15703.46@driftwood> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii; DelSp=Yes; Format=Flowed Content-Disposition: inline Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1776 Lines: 42 On 03/19/2013 06:00:32 PM, Martin Steigerwald wrote: > Am Dienstag, 29. Januar 2013 schrieb Daniel Phillips: > > On Mon, Jan 28, 2013 at 5:40 PM, Theodore Ts'o > wrote: > > > On Mon, Jan 28, 2013 at 04:20:11PM -0800, Darrick J. Wong wrote: > > >> On Mon, Jan 28, 2013 at 03:27:38PM -0800, David Lang wrote: > > >> > The situation I'm thinking of is when dealing with VMs, you > make a > > >> > filesystem image once and clone it multiple times. Won't that > end up > > >> > with the same UUID in the superblock? > > >> > > >> Yes, but one ought to be able to change the UUID a la tune2fs > > >> -U. Even still... so long as the VM images have a different UUID > > >> than the fs that they live on, it ought to be fine. > > > > > > ... and this is something most system administrators should be > > > familiar with. For example, it's one of those things that Norton > > > Ghost when makes file system image copes (the equivalent of > "tune2fs > > > -U random /dev/XXX") > > > > Hmm, maybe I missed something but it does not seem like a good idea > > to use the volume UID itself to generate unique-per-volume metadata > > hashes, if users expect to be able to change it. All the metadata > hashes > > would need to be changed. > > I believe that is what BTRFS is doing. > > And yes, AFAIK there is no easy way to change the UUID of a BTRFS > filesystems > after it was created. I'm confused, http://tux3.org/ lists a bunch of dates from 5 years ago, then nothing. Is this project dead or not? Rob-- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/