Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S967885AbWLEAVM (ORCPT ); Mon, 4 Dec 2006 19:21:12 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S967886AbWLEAVM (ORCPT ); Mon, 4 Dec 2006 19:21:12 -0500 Received: from terminus.zytor.com ([192.83.249.54]:48733 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S967885AbWLEAVL (ORCPT ); Mon, 4 Dec 2006 19:21:11 -0500 Message-ID: <4574BB63.4020800@zytor.com> Date: Mon, 04 Dec 2006 16:20:51 -0800 From: "H. Peter Anvin" User-Agent: Thunderbird 1.5.0.8 (X11/20061107) MIME-Version: 1.0 To: Trond Myklebust CC: Janne Karhunen , MrUmunhum@popdial.com, linux-kernel@vger.kernel.org Subject: Re: Mounting NFS root FS References: <4571CE06.4040800@popdial.com> <200612041912.30527.Janne.Karhunen@gmail.com> <1165256490.711.233.camel@lade.trondhjem.org> <200612042205.57577.Janne.Karhunen@gmail.com> <1165267623.5698.33.camel@lade.trondhjem.org> In-Reply-To: <1165267623.5698.33.camel@lade.trondhjem.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1428 Lines: 31 Trond Myklebust wrote: > On Mon, 2006-12-04 at 22:05 +0200, Janne Karhunen wrote: >> On Monday 04 December 2006 20:21, Trond Myklebust wrote: >> >>>>> 2) NFS provides persistent storage. >>>> To me this sounds like a chicken and an egg problem. It >>>> both depends and provides this at the same time :/. But >>>> hey, if it's supposed to work then OK. >>> ??? Locking depends on persistent storage, but persistent storage never >>> depended on locking. >> Except for the fact that to be able to mount anything RW you >> generally _want_ to have locks. And can't have locks without >> the mount. Not that it wouldn't work, it's just that I would >> not do it [for obvious reasons]. > > You just need to be careful to set it up correctly in the initrd: either > make sure that you mount the root partition as 'nolock' or else make > sure that you mount /var/lib/nfs, and start rpc.statd before you start > init and any other applications that might need locking. > The nfsmount which is in the klibc distribution supports running an ad hoc portmap daemon, which allows locking to be done by forwarding information to the "real" portmap for when the real rpc.statd is run. -hpa - 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/