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Date:      Mon, 19 Dec 2005 10:14:41 +0100
From:      Oliver Brandmueller <ob@e-Gitt.NET>
To:        Jon Dama <jd@ugcs.caltech.edu>
Cc:        freebsd-stable@freebsd.org
Subject:   [SOLVED] Re: NFS UDP mounts on RELENG_6?
Message-ID:  <20051219091441.GQ34429@e-Gitt.NET>
In-Reply-To: <Pine.LNX.4.53.0512190055270.2649@lira.ugcs.caltech.edu>
References:  <20051216143936.GF34429@e-Gitt.NET> <20051216163031.6d5ce939@TP51.local> <20051218124537.GK34429@e-Gitt.NET> <20051218165029.6aa75b7b@TP51.local> <Pine.LNX.4.53.0512190055270.2649@lira.ugcs.caltech.edu>

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Hi.

On Mon, Dec 19, 2005 at 01:01:34AM -0800, Jon Dama wrote:
> A very critical question here is the network topology.
> 
> UDP NFS _cannot_ be used across switches where the ports are operating at
> different speeds--unless the UDP packet size is to be smaller than MTU.
> 
> Be sure and verify that every link between the server and the client are
> operating at the same speed.

*ouch* shame on me.

I looked at interfaces, links, errors - everything. I found the problem 
in a misconfiguration and you just pointed at it:

The server has not been booted for a few hundred days before upgrading. 
>From an old test there was an "mtu 9000" for the NFS interface still in 
/etc/rc.conf (while it has been reset after failed tests with other 
hardware on that network manually to 1500).

So: SORRY for making everybody mad here. It was just me being blind.

Thanx for pointing me at that!

- Oliver

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