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Date: Tue, 8 Feb 2011 19:09:21 -0500
From: "'J. Bruce Fields'" <bfields@fieldses.org>
To: Txema Heredia <txema.heredia@upf.edu>
Cc: linux-nfs@vger.kernel.org
Subject: Re: NFSv4 memory allocation bug?
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On Tue, Feb 08, 2011 at 07:07:08PM +0100, Txema Heredia wrote:
> Hi all,
> 
> After a month or so struggling with this, and some other problems with NFSD
> in my "old" kernel (2.6.16.60-0.39.3-smp) related with MTUs larger than 1500
> stalling the server, I think I have found something related with my
> inability to serve v4 filesystems:
> 
> In /usr/src/linux/include/linux/nfsd/const.h there is this defined:
> /*
>  * Maximum protocol version supported by knfsd
>  */
> #define NFSSVC_MAXVERS          3
> 
> And in /usr/src/linux/fs/nfsd/nfsctl.c we can find this:
> err = -EINVAL;
> if (data->gd_version < 2 || data->gd_version > NFSSVC_MAXVERS)
>    goto out;
> ...
> out:
>         return err;
> 
> 
> And I found exactly the same in 2.6.34.7
> 
> Is this "real" or some old thing that is no longer used and I shouldn't
> worry about?

Probably irrelevant.

Could you tell us exactly what you've tried to do and why it's failing?

--b.