From: Bernd Schubert <bernd-schubert@web.de>
Subject: Re: mysterious NFS-behaviour
Date: Thu, 8 May 2003 10:56:01 +0200
Sender: nfs-admin@lists.sourceforge.net
Message-ID: <200305081056.01105.bernd-schubert@web.de>
References: <03May8.101130cest.115214@gw.cae-gmbh.de>
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On Thursday 08 May 2003 10:17, Christoph Dohmen wrote:
> Hi folks,
>
> I was told about a very mysterious behaviour of a NFS-system. But I could
> not explain what's happening. So, maybe someone of this list is able?!
>
> Well, there's a system running suse linux 7.2 with kernel 2.4.4 on a

Have you ever been thought about upgrading your kernel ?

> nfs-server using software-raid for the exported directory. More than 60
> clients (also suse 7.2 with 2.4.4) mount this export.

Upgrade the clients as well.

> So the behaviour is the following:
> I have one client and open four terminales.
> In the first terminal (local) I do a mkdir foo in the mounted directory
> In the second terminal (local) I do a ls in the mounted directory and I get
> an I/O-error
> In the third terminal (ssh on the nfs-server) I can see the created
> directory. In the fourth terminal (ssh on another client) I can see the
> created directory after about one or two seconds.
>
> So, what's going on? Is there a misconfiguration? Are 60 clients too many??
>

2.4.4 is really old and many nfs- and other fs-fixes have been done since the 
release of this kernel version. Furthermore I think everything below 2.4.8 
can be considered as very buggy and shouldn't be used in a production 
environment.

Bernd


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