From: Donald Burns Subject: Problems with hard links in root NFS filesystem Date: Thu, 1 Aug 2002 12:20:19 +0100 Sender: nfs-admin@lists.sourceforge.net Message-ID: Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Return-path: Received: from rg134.reliance.co.uk ([62.254.170.185] ident=hidden-user) by usw-sf-list1.sourceforge.net with esmtp (Exim 3.31-VA-mm2 #1 (Debian)) id 17aE0H-0006nb-00 for ; Thu, 01 Aug 2002 04:20:25 -0700 To: "'nfs@lists.sourceforge.net'" Errors-To: nfs-admin@lists.sourceforge.net List-Help: List-Post: List-Subscribe: , List-Id: Discussion of NFS under Linux development, interoperability, and testing. List-Unsubscribe: , List-Archive: Dear list members, I have a problem using NFS. Synopsis: Files that are hard linked on the server's root NFS images for a Beowulf cluster become inaccesable either imediately or after a few hours. Boot example: From the server's logs (server is rg272) :- July 30 10:05:45 rg272 kernel: nfsd Security: sbin/init bad export. July 30 10:05:46 rg272 kernel: nfsd Security: sbin/bash bad export. The client boot-up hangs at this point. After time example: From the server's logs (as I remember it):- July 30 11:34:02 rg272 kernel: nfsd Security: lib/libc6.x.x.so bad export. Client example: From the command line:- cat /etc/inittab cat: standard output: Stale NFS file handle Other symptoms: When booting the cluster each machine must be booted on its own. Booting the machines in parallel fills the servers logs with "bad export" messages. Problem exists irrespective of NFS protocol used (V2 or V3) Cycling the power on the server clears the problem temporarily but restarting the NFS service does not. System Details: Software:- Linux RedHat 7.3 on server and clients (kernel 2.4.18) Server:- Dell GX530 dual processor precision work station. Clients:- Dell GX260 single processor work station. Progress in solving the problem to date: By trawling the web I found one Gunnar Raetch who experianced almost identical problems using kernel 2.4.14. He fixed the problem by applying the following kernel patches:- http://www.cse.unsw.edu.au/~neilb/patches/linux/2.4.14-pre4/ patch-D-NfsdOpsPrepare patch-E-NfsdOps patch-F-ReiserfsNfsdOps I am unable patch my 2.4.18 kernel with these patches. I also tried down grading to kernel 2.4.14, successfully applied the patches & compiled, but the USB support in 2.4.14 would not allow me use of my mouse and keyboard (Oh Sh*t!). I hope this provides sufficient info to resolve the problem. Many thanks in advance for your anticipated kind help. Best Regards, Donald. Reliance Gear Company Ltd. Rowley Mills Penistone Road Lepton Huddersfield England HD8 0LE Tel: +44 1484 601000 fax: +44 1484 601001 http://www.reliance.co.uk THE INFORMATION IN THIS COMMUNICATION IS CONFIDENTIAL AND INTENDED ONLY FOR THE USE OF THE ADDRESSEE. DISCLOSURE, USE OR COPYING OF THIS MESSAGE OR ITS CONTENTS OTHER THAN BY THE ADDRESSEE IS PROHIBITED. IF YOU RECEIVE THIS COMMUNICATION IN ERROR WE WOULD BE GRATEFUL IF YOU WOULD NOTIFY US IMMEDIATELY AND DELETE ANY MATERIAL RECEIVED ------------------------------------------------------- This sf.net email is sponsored by:ThinkGeek Welcome to geek heaven. http://thinkgeek.com/sf _______________________________________________ NFS maillist - NFS@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/nfs