From mboxrd@z Thu Jan 1 00:00:00 1970 From: "J. Bruce Fields" Subject: Re: Linux NFS-HOWTO - improvement to Troubleshooting permission denied Date: Mon, 25 Aug 2008 11:55:03 -0400 Message-ID: <20080825155503.GH30871@fieldses.org> References: <87skstbl7j.fsf@jondo.cante.net> <76bd70e30808250841v4e73c576qc1e68c85d88bb989@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Jari Aalto , NFS HOWTO author , "http://linux-nfs.org" , chip@users.sourceforge.net, hjl@users.sourceforge.net, jbfields@users.sourceforge.net, jweber@users.sourceforge.net, marcmerlin@users.sourceforge.net, neilbrown@users.sourceforge.net, steved12345@users.sourceforge.net, trondmy@users.sourceforge.net To: chucklever@gmail.com Return-path: Received: from mail.fieldses.org ([66.93.2.214]:52707 "EHLO fieldses.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750769AbYHYPzI (ORCPT ); Mon, 25 Aug 2008 11:55:08 -0400 In-Reply-To: <76bd70e30808250841v4e73c576qc1e68c85d88bb989-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org> Sender: linux-nfs-owner@vger.kernel.org List-ID: On Mon, Aug 25, 2008 at 11:41:02AM -0400, Chuck Lever wrote: > Hi Jari- > > On Mon, Aug 25, 2008 at 3:36 AM, Jari Aalto wrote: > > > > Thank you for the NFS howto (last modified 2006). Please add further > > diagnostics to section: > > > > => "I do not have permission to access files on the mounted volume" > > http://nfs.sourceforge.net/nfs-howto/ar01s07.html#pemission_issues > > > > The error condition "Permission denied" also happens in certain NFS > > (client/server) combinations and the workaround is to add additional > > mount parameter at client: > > > > sec=sys > > > > Please add this to the "#pemission_issues" (tag the word seems to have a > > small typo). > > This is a known bug in nfs-utils 1.1.3 when used with older client > kernels that do not support text-based mounts. > > Seems like an esoteric (ie not widespread) problem, but I could easily > be wrong about that. People should be able to upgrade nfs-utils without upgrading their kernel! The referenced debian bug report: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=492970 claims the first bad commit is a server-side commit that itself seems to claim to work around a problem? ("For mountd, it does not advertise AUTH_NULL anymore. This is necessary to avoid backward compatibility issue. If AUTH_NULL appears in the list, either the new or the old client will choose that over AUTH_SYS.") Did we ever find the actual root cause? --b.