From: Gerd Knorr <kraxel@bytesex.org>
To: BlaisorBlade <blaisorblade_spam@yahoo.it>
Cc: user-mode-linux-devel@lists.sourceforge.net,
Lars Ellenberg <Lars.Ellenberg@linbit.com>
Subject: Re: [uml-devel] uml "ip header error" for large (fragmented) udp packets
Date: 04 Oct 2004 13:07:56 +0200 [thread overview]
Message-ID: <871xgevj03.fsf@bytesex.org> (raw)
In-Reply-To: <200410031711.26138.blaisorblade_spam@yahoo.it>
BlaisorBlade <blaisorblade_spam@yahoo.it> 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
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next prev parent reply other threads:[~2004-10-04 11:20 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-10-03 2:36 [uml-devel] uml "ip header error" for large (fragmented) udp packets Lars Ellenberg
2004-10-03 15:11 ` BlaisorBlade
2004-10-03 19:29 ` Lars Ellenberg
2004-10-04 11:07 ` Gerd Knorr [this message]
2004-10-04 11:56 ` Henrik Nordstrom
2004-10-06 17:50 ` BlaisorBlade
2004-10-06 18:48 ` Lars Ellenberg
2004-10-06 20:35 ` Andi Kleen
2004-10-06 21:48 ` Lars Ellenberg
2004-10-07 18:41 ` BlaisorBlade
2004-10-07 18:41 ` BlaisorBlade
2004-10-07 20:24 ` Lars Ellenberg
2004-10-11 17:55 ` Lars Ellenberg
2004-10-12 0:03 ` [uml-devel] SOLVED: " Lars Ellenberg
2004-10-12 0:11 ` Andi Kleen
2004-10-12 1:10 ` BlaisorBlade
2004-10-12 1:53 ` Michael Richardson
2004-10-15 15:25 ` [uml-devel] larger MTU _does_ work Lars Ellenberg
2004-10-12 0:27 ` [uml-devel] SOLVED: uml "ip header error" for large (fragmented) udp packets BlaisorBlade
2004-10-12 14:00 ` Lars Ellenberg
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