From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from sc8-sf-mx2-b.sourceforge.net ([10.3.1.12] helo=sc8-sf-mx2.sourceforge.net) by sc8-sf-list1.sourceforge.net with esmtp (Exim 4.30) id 1CEQt7-00065g-Dt for user-mode-linux-devel@lists.sourceforge.net; Mon, 04 Oct 2004 04:20:17 -0700 Received: from hirsch.in-berlin.de ([192.109.42.6] ident=root) by sc8-sf-mx2.sourceforge.net with esmtp (TLSv1:AES256-SHA:256) (Exim 4.41) id 1CEQt5-0001yq-BZ for user-mode-linux-devel@lists.sourceforge.net; Mon, 04 Oct 2004 04:20:17 -0700 Subject: Re: [uml-devel] uml "ip header error" for large (fragmented) udp packets References: <200410031711.26138.blaisorblade_spam@yahoo.it> From: Gerd Knorr In-Reply-To: <200410031711.26138.blaisorblade_spam@yahoo.it> Message-ID: <871xgevj03.fsf@bytesex.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: user-mode-linux-devel-admin@lists.sourceforge.net Errors-To: user-mode-linux-devel-admin@lists.sourceforge.net List-Unsubscribe: , List-Id: The user-mode Linux development list List-Post: List-Help: List-Subscribe: , List-Archive: Date: 04 Oct 2004 13:07:56 +0200 To: BlaisorBlade Cc: user-mode-linux-devel@lists.sourceforge.net, Lars Ellenberg BlaisorBlade writes: > > I wonder, if someone uses nfs over udp on uml, this should > > be a long known issue and turn up loads of hits in a search. > > I did not find a single reference to that problem, though. > > Does NFS uses large UDP packets? Looks like it does. I can ack that issue for the NFS case. NFS over tcp does fine (which seems to be the default, so I didn't notice until now). NFS over udp works, is very slow through and I get plenty of "nfs server not responding" + "nfs server ok" messages in the syslog. Looks like it doesn't loose all packets, but enougth to slowdown it drastically and trigger timeouts on the client side. That is (kernel) nfs server on the host machine, uml being connected via tuntap networking and mounting /home using NFS. Gerd -- return -ENOSIG; ------------------------------------------------------- This SF.net email is sponsored by: IT Product Guide on ITManagersJournal Use IT products in your business? Tell us what you think of them. Give us Your Opinions, Get Free ThinkGeek Gift Certificates! Click to find out more http://productguide.itmanagersjournal.com/guidepromo.tmpl _______________________________________________ User-mode-linux-devel mailing list User-mode-linux-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel