From: Bernd Schubert <bernd-schubert@web.de>
Subject: Re: Re: Root Over NFS Memory Problem
Date: Thu, 4 Mar 2004 16:06:48 +0100
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Message-ID: <200403041606.48365.bernd-schubert@web.de>
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On Thursday 04 March 2004 15:18, Nick Couchman wrote:
> > We are running currently 43 system over a nfs root filesystem and
> > none of those systems is suffering from such memory leak. So I
> > really don't think this is a vanilla kernel issue. If you are sure >
>
> that its the kernel, try without OpenMosix and other patches.
>
> > Cheers,
> >        Bernd
>
> Two things: 1) What version of the kernel are you running?  

Currently 2.4.24 and 2.4.25, but we have had every kernel version since 2.4.18 
except 2.4.22 since it had NFS-bugs (clients permanentely reported server not 
responding).

> 2) We have 
> another Linux box running the same kernel, but it is not booting
> root-over-NFS, it is using the local hard drive.  This machine does not
> "leak" memory.  

Is this machine also using OpenMosix? 

> Other ideas?  Could it be portmap? 

Portmap is a userspace program, I think memory leakage in userspace is easy to 
detect using top, isn't it?

Well, I don't thinkg that its important, we currently mount the nfs-root 
directory from an initrd and not directly from the kernel nfs-root-mount 
functions. However until 2.4.20 we also used the direct approach and had no 
problems. Sorry, no further ideas.

Bernd


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