From: Neil Brown Subject: Re: Invisible files and input/output errors Date: Tue, 4 Dec 2007 11:23:52 +1100 Message-ID: <18260.40472.276614.78174@notabene.brown> References: <200712040037.36598.bartoschek@or.uni-bonn.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: linux-nfs@vger.kernel.org To: Christoph Bartoschek Return-path: Received: from cantor2.suse.de ([195.135.220.15]:37002 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750896AbXLDAX6 (ORCPT ); Mon, 3 Dec 2007 19:23:58 -0500 In-Reply-To: message from Christoph Bartoschek on Tuesday December 4 Sender: linux-nfs-owner@vger.kernel.org List-ID: On Tuesday December 4, bartoschek-eefaeeawk+jFLWzOrOlZPg@public.gmane.org wrote: > Hi, > > we use a DFS-NFS-Gateway on AIX 5.1 as our NFS-Server. This works fine most of > the time but for four months we have strange problems. There are basically > two issues: > > 1. Using "ls" in specific directories after certain idle time gives us > an "Input/Output Error" without any results. > > 2. In some directories some entries are not shown. For example there is a > directory with the subdirectory ak_fcp in it. "ls" does not show this > directory. But it is possible to do "cd ak_fcp" and then normally work with > it. It is also possible to access files in the directory while being in the > parent directory: " less ak_fcp/logfile" works. > > Does anybody know how to get rid of the problems? The problems occur on > several different linux versions. Sounds a lot like directory cookie problems. Can you get a network trace of the NFS packets. Something like tcpdump -s 0 -w /tmp/trace host NAME-OF-SERVER then cause the failure while that is running. Either compress and attach the result to an Email, or if it is too big, stick it on a website somewhere. NeilBrown