On Thu, Aug 20, 2009 at 09:02:29PM +0800, Trond Myklebust wrote:
> 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
I used 1024 and found the mount failed here in nfs_walk_authlist():
dfprintk(MOUNT, "NFS: server does not support requested auth flavor\ n");
nfs_umount(request);
Thanks,
Fengguang
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