From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932347AbWGRSg2 (ORCPT ); Tue, 18 Jul 2006 14:36:28 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932349AbWGRSg2 (ORCPT ); Tue, 18 Jul 2006 14:36:28 -0400 Received: from s2.ukfsn.org ([217.158.120.143]:55436 "EHLO mail.ukfsn.org") by vger.kernel.org with ESMTP id S932347AbWGRSg1 (ORCPT ); Tue, 18 Jul 2006 14:36:27 -0400 Message-ID: <44BD2A29.8060405@dgreaves.com> Date: Tue, 18 Jul 2006 19:36:25 +0100 From: David Greaves User-Agent: Thunderbird 1.5.0.2 (X11/20060516) MIME-Version: 1.0 To: Neil Brown Cc: Martin Filip , linux-kernel@vger.kernel.org Subject: Re: NFS and partitioned md References: <1151355145.4460.16.camel@archon.smoula-in.net> <17568.31894.207153.563590@cse.unsw.edu.au> <1151432312.11996.32.camel@reaver.netbox-in.cz> <17571.19699.980491.970386@cse.unsw.edu.au> In-Reply-To: <17571.19699.980491.970386@cse.unsw.edu.au> X-Enigmail-Version: 0.94.0.0 Content-Type: text/plain; charset=ISO-8859-2 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Neil Brown wrote: > On Tuesday June 27, bugtraq@smoula.net wrote: >> Hi, >> >> thx for your interrest, >> >> Neil Brown píše v Út 27. 06. 2006 v 10:32 +1000: >>> So I suspect there is something else going on that has nothing to do >>> with the usage of partitioned md.... then again, maybe there is some >>> weird sign extension happening to '254' somewhere, though that would >>> be terribly strange. >> (as I look on that it comes on my mind, that problem could be minor >> longer than 1 byte) >> > > Exactly. 4105 > 256. Such devices need a different format filehandle > which didn't work until very recently due to a bug (obviously no-one > tried it until recently). > > The patch below fixes the kernel so that this will work. > Alternately use md_d0 md_d1, md_d2, or md_d3. Then it will work with > no patches. FWIW (and google) I have just encountered this problem on 2.6.16.9 server. My error message with the NFS mount failing was: mount teak:/media /mnt/test mount: teak:/media: can't read superblock teak:~# ll /dev/media* brw-rw---- 1 root disk 254, 8128 2006-07-18 18:39 /dev/media brw-rw---- 1 root disk 254, 8129 2006-07-18 18:39 /dev/media1 brw-rw---- 1 root disk 254, 8130 2006-07-18 18:39 /dev/media2 brw-rw---- 1 root disk 254, 8131 2006-07-18 18:39 /dev/media3 brw-rw---- 1 root disk 254, 8132 2006-07-18 18:39 /dev/media4 I rebooted to use /dev/md_d0 and /dev/md_d0p1 and it's fine. David