From mboxrd@z Thu Jan 1 00:00:00 1970 From: Greg Lindahl Subject: Re: NFS mount/umount problem Date: Thu, 16 Jan 2003 12:00:18 -0800 Sender: nfs-admin@lists.sourceforge.net Message-ID: <20030116200018.GA1253@wumpus.internal.keyresearch.com> References: <1042744656.3312.43.camel@localhost> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: NFS mailing list , Craig Tierney Return-path: Received: from ppp-66-122-194-201.aonnetworks.com ([66.122.194.201] helo=localhost.localdomain) by sc8-sf-list1.sourceforge.net with esmtp (Cipher TLSv1:DES-CBC3-SHA:168) (Exim 3.31-VA-mm2 #1 (Debian)) id 18ZG6s-0006BS-00 for ; Thu, 16 Jan 2003 11:55:30 -0800 To: "David B. Ritch" In-Reply-To: <1042744656.3312.43.camel@localhost> 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: > After I upgraded the server from 2.4.14 to 2.4.20, I am having a problem > mounting and unmounting the NFS partitions using autofs. I have all > of the clients touch the nfs filesystems (ls /misc/scratchx) to cause > them to mount. Many of the mounts fail (~ 50%) with the error. Dave, You might want to have Craig mention how many clients are involved. If this is the FSL cluster, it's 1000. I don't know how mount decides whether to use UCP or TCP for the mount operation, but I do know that 1000 UDP requests heading at the same server at the same time is some major congestion. 1000 TCP connections against the same server is likewise problemmatic. -- greg ------------------------------------------------------- This SF.NET email is sponsored by: Thawte.com Understand how to protect your customers personal information by implementing SSL on your Apache Web Server. Click here to get our FREE Thawte Apache Guide: http://ads.sourceforge.net/cgi-bin/redirect.pl?thaw0029en _______________________________________________ NFS maillist - NFS@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/nfs