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    SubjectRe: "svc: unknown version (3)" when CONFIG_NFSD_V4=y
    On Wed, Jan 10, 2007 at 05:01:23PM +1100, Neil Brown wrote:
    > On Friday January 5, fengguang.wu@gmail.com wrote:
    > > Hi Neil,
    > >
    > > NFS mounting succeeded, but the kernel gives a warning.
    > > I'm running 2.6.20-rc2-mm1.
    > >
    > > # mount -o vers=3 localhost:/suse /mnt
    > > [ 689.651606] svc: unknown version (3)
    > > # mount | grep suse
    > > localhost:/suse on /mnt type nfs (rw,nfsvers=3,addr=127.0.0.1)
    > >
    > > Any clues about it?
    >
    > Weird.
    >
    > Please try this patch. It should provide more useful information.
    >
    > NeilBrown
    >
    > Signed-off-by: Neil Brown <neilb@suse.de>
    >
    > ### Diffstat output
    > ./net/sunrpc/svc.c | 3 ++-
    > 1 file changed, 2 insertions(+), 1 deletion(-)
    >
    > diff .prev/net/sunrpc/svc.c ./net/sunrpc/svc.c
    > --- .prev/net/sunrpc/svc.c 2007-01-10 16:58:14.000000000 +1100
    > +++ ./net/sunrpc/svc.c 2007-01-10 16:59:55.000000000 +1100
    > @@ -910,7 +910,8 @@ err_bad_prog:
    >
    > err_bad_vers:
    > #ifdef RPC_PARANOIA
    > - printk("svc: unknown version (%d)\n", vers);
    > + printk("svc: unknown version (%d for prog %d, %s)\n",
    > + vers, prog, progp->pg_name);
    > #endif
    > serv->sv_stats->rpcbadfmt++;
    > svc_putnl(resv, RPC_PROG_MISMATCH);

    root ~# mount localhost:/suse /mnt
    [ 132.678204] svc: unknown version (3 for prog 100227, nfsd)

    I've confirmed that 2.6.20-rc2-mm1, 2.6.20-rc3-mm1, 2.6.19-rc6-mm1 all
    have this warning, while 2.6.17-2-amd64 is good.

    Thanks,
    Wu
    -
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