From: Trond Myklebust Subject: Re: [2.6.33-rc3] NFS4 and dentry issues... Date: Sun, 10 Jan 2010 15:08:13 -0500 Message-ID: <1263154093.2987.34.camel@localhost> References: <6278d2221001090632m7fdd77qc73c203840a2a78e@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Cc: linux-nfs@vger.kernel.org, Linux Kernel To: Daniel J Blueman Return-path: Received: from mail-out2.uio.no ([129.240.10.58]:55178 "EHLO mail-out2.uio.no" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751580Ab0AJUIS (ORCPT ); Sun, 10 Jan 2010 15:08:18 -0500 In-Reply-To: <6278d2221001090632m7fdd77qc73c203840a2a78e-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org> Sender: linux-nfs-owner@vger.kernel.org List-ID: On Sat, 2010-01-09 at 14:32 +0000, Daniel J Blueman wrote: > When synchronising files (unison, like a two way rsync) over an NFS4 > mount (server with 2.6.32.2) on a client running 2.6.33-rc3 (also > -rc2), I ran into dcache issues [1]. > > I've been unable to consistently reproduce this for bisecting, and > filesystem benchmarks via NFS on tmpfs over localhost fails to > reproduce it either. > > What additional information may be useful? There is a known issue in 2.6.33-rc3 with rename causing corruption of the dentry lookup hash lists. A fix for that problem has already been merged into mainline as http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git&a=commitdiff&h=56335936de1a41c8978fde62b2158af77ddc7258 Could you see if you can reproduce your problem with that fix applied? Cheers Trond