From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760522AbXGBO5Q (ORCPT ); Mon, 2 Jul 2007 10:57:16 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751325AbXGBO5G (ORCPT ); Mon, 2 Jul 2007 10:57:06 -0400 Received: from Mycroft.westnet.com ([216.187.52.7]:34937 "EHLO Mycroft.westnet.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753370AbXGBO5F (ORCPT ); Mon, 2 Jul 2007 10:57:05 -0400 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-ID: <18057.4421.660858.199636@stoffel.org> Date: Mon, 2 Jul 2007 10:52:53 -0400 From: "John Stoffel" To: Neil Brown Cc: Turbo Fredriksson , Alasdair G Kergon , linux-kernel Subject: Re: Moving MD/LVM from PPC to x86 In-Reply-To: <18054.9063.45466.586046@notabene.brown> References: <87wsxneqs0.fsf@pumba.bayour.com> <20070629215416.GA12786@agk.fab.redhat.com> <876455erlw.fsf@pumba.bayour.com> <18054.9063.45466.586046@notabene.brown> X-Mailer: VM 7.19 under Emacs 21.4.1 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org >>>>> "Neil" == Neil Brown writes: Neil> On Saturday June 30, turbo@bayour.com wrote: >> Quoting Alasdair G Kergon : >> >> > On Thu, Jun 28, 2007 at 11:02:39PM +0200, Turbo Fredriksson wrote: >> >> 2. How do I move a VG/PV/LV from PPC to x86? >> > >> > The on-disk LVM2 metadata should be accessible from both >> > architectures. >> >> Well, when I move the disks, the intel machine say that one of >> the disks don't have a partition table and that the other don't >> have any MD superblock... Neil> Version 0.90 MD superblocks (still the default) uses host-endian Neil> values so you cannot move between architectures directly. Neil> However isn't too hard to make it work. So if we have version 1.0, 1.1 and 1.2 superblocks, why aren't they the default yet? I assume they're useful, so let's use them! John