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Subject: Re: mount.nfs: access denied by server
From: Trond Myklebust <trond.myklebust@fys.uio.no>
To: Wu Fengguang <fengguang.wu@intel.com>
Cc: linux-nfs@vger.kernel.org, LKML <linux-kernel@vger.kernel.org>
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Date: Thu, 20 Aug 2009 09:02:29 -0400
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On Thu, 2009-08-20 at 15:13 +0800, Wu Fengguang wrote:
> Hi,
> 
> After upgrading NFS client kernel to latest linux-next, NFS mount
> failed:
> 
>         # mount -t nfs pxe:/cc /cc
>         mount.nfs: access denied by server while mounting pxe:/cc
> 
>         # uname -a
>         Linux hp 2.6.31-rc6-next-20090818 #61 SMP Thu Aug 20 14:46:10 CST 2009 x86_64 GNU/Linux 
> 
> However server log says OK:
> 
>         Aug 20 15:02:09 wu-t61 mountd[4599]: authenticated mount request from 192.168.11.6:973 for /cc (/cc)
>         Aug 20 15:02:09 wu-t61 mountd[4599]: authenticated unmount request from 192.168.11.6:974 for /cc (/cc)
> 
> However-2: nfsroot can be mounted at boot time. Server kernel has always been 2.6.30.
> 
> Any ideas?
> 
> Thanks,
> Fengguang

Can you try again after enabling mount debugging on the NFS client?

echo 512 > /proc/sys/sunrpc/nfs_debug


Cheers
  Trond