Return-Path: linux-nfs-owner@vger.kernel.org Received: from fieldses.org ([174.143.236.118]:51172 "EHLO fieldses.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756405Ab2HGT5F (ORCPT ); Tue, 7 Aug 2012 15:57:05 -0400 Date: Tue, 7 Aug 2012 15:57:03 -0400 From: "J. Bruce Fields" To: Bryan Schumaker Cc: Jeff Layton , linux-nfs@vger.kernel.org Subject: Re: nfs4 mounts failing with 3.6.0-rc1 Message-ID: <20120807195703.GC22532@fieldses.org> References: <20120804000819.GB25558@fieldses.org> <20120803220039.743fe1f0@corrin.poochiereds.net> <20120804190104.GA2135@fieldses.org> <20120807130932.79625d7e@tlielax.poochiereds.net> <20120807194250.GB22532@fieldses.org> <50217035.5010304@netapp.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: <50217035.5010304@netapp.com> Sender: linux-nfs-owner@vger.kernel.org List-ID: On Tue, Aug 07, 2012 at 03:44:53PM -0400, Bryan Schumaker wrote: > On 08/07/2012 03:42 PM, J. Bruce Fields wrote: > > On Tue, Aug 07, 2012 at 01:09:32PM -0400, Jeff Layton wrote: > >> On Sat, 4 Aug 2012 15:01:04 -0400 > >> "J. Bruce Fields" wrote: > >> > >>> On Fri, Aug 03, 2012 at 10:00:39PM -0400, Jeff Layton wrote: > >>>> On Fri, 3 Aug 2012 20:08:19 -0400 > >>>> "J. Bruce Fields" wrote: > >>>> > >>>>> I'm getting > >>>>> > >>>>> # mount -tnfs -onfsvers=4 pip1:/exports /mnt/ > >>>>> > >>>>> (OK, admittedly that's with 3.6.0-rc1 + a few experimental patches, but > >>>>> I doubt they're related.) > >>>>> > >>>>> Also: > >>>>> > >>>>> [root@pip2 ~]# modprobe nfs4 > >>>>> [root@pip2 ~]# lsmod|grep nfs4 > >>>>> [root@pip2 ~]# > >>>>> > >>>>> --b. > >>>> > >>>> I hit the same problem... > >>>> > >>>> Try removing /usr/lib/modprobe.d/nfs.conf (assuming you're running > >>>> Fedora). > >>> > >>> Oog, right. > >>> > >>> But, without testing--won't that make v4 mounts fail on older kernels? > >> > >> Actually, now that I look, this does not seem to break on older kernels > >> as long as you use a syntax like: > >> > >> # mount -t nfs server:/export /mnt/point -o vers=4 > >> > >> ...if, however you use a syntax like: > >> > >> # mount -t nfs4 server:/export /mnt/point > >> > >> ...then it fails without the above file in place. I guess the question > >> we have to answer is: Do we want to continue to support the "-t nfs4" > >> mount syntax? > > > > I think you're right that we want to deprecate it. > > > > Though this is a bit of a harsh way to do it--would have been nice to > > have some transition period with a warning or something. > > I didn't expect this to be broken, both ways of mounting still work on my VMs so I expected them to work for everybody else too. Huh. Just checked on an old kernel without an "alias nfs4 nfs" in modprobe configuration, and sure enough I get "No such device". Maybe you have some initscripts or something else that's loading the nfs module for you before the mount? --b.