From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S267278AbUHDG1R (ORCPT ); Wed, 4 Aug 2004 02:27:17 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S267274AbUHDG1R (ORCPT ); Wed, 4 Aug 2004 02:27:17 -0400 Received: from acheron.informatik.uni-muenchen.de ([129.187.214.135]:38626 "EHLO acheron.informatik.uni-muenchen.de") by vger.kernel.org with ESMTP id S267278AbUHDG1L (ORCPT ); Wed, 4 Aug 2004 02:27:11 -0400 Message-ID: <411081BD.6030706@bio.ifi.lmu.de> Date: Wed, 04 Aug 2004 08:27:09 +0200 From: Frank Steiner User-Agent: Mozilla Thunderbird 0.6 (X11/20040503) X-Accept-Language: en-us, en MIME-Version: 1.0 To: L A Walsh Cc: linux-kernel@vger.kernel.org Subject: Re: NFS-mounted, read-only /dev unusable in 2.6 References: <410F481C.9090408@bio.ifi.lmu.de> <64bf.410f9d6f.62af@altium.nl> <410FA44F.1020804@bio.ifi.lmu.de> <410FCB3A.9000401@tlinx.org> In-Reply-To: <410FCB3A.9000401@tlinx.org> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org L A Walsh wrote: > Maybe I'm missing something, but in the 2.6 series, wasn't the ability > to mount subdirectories with different options, also, added? Would > it be possible to export and mount /dev with rw options to a specific > client? Yes, that's an option. But all this needs to be done in the init script, since with nfsroot I only get /. So mounting /dev rw from the server is similar to figuring out which client-specific /dev should be mounted. But in this init process things can fail and I want to see those messages. If I fail to mount the server /dev rw for any reason, I won't see the error message :-( > > Or, more radical, if the roots of the clients end up being mounted RW > eventually anyway, why not specify 'rw' in the lilo option? It's not > like it is a local filesystem that may be corrupt where one should > boot from it RO until it is checked... No, the real / is exported ro from the server and stays mounted ro on the clients. Only the client specific /dev, /var and /etc are mounted rw... cu, Frank -- Dipl.-Inform. Frank Steiner Web: http://www.bio.ifi.lmu.de/~steiner/ Lehrstuhl f. Bioinformatik Mail: http://www.bio.ifi.lmu.de/~steiner/m/ LMU, Amalienstr. 17 Phone: +49 89 2180-4049 80333 Muenchen, Germany Fax: +49 89 2180-99-4049 * Rekursion kann man erst verstehen, wenn man Rekursion verstanden hat. *