Re: "svc: unknown version (3)" when CONFIG_NFSD_V4=y

From: Fengguang Wu
Date: Fri Jan 05 2007 - 07:48:50 EST


On Fri, Jan 05, 2007 at 01:25:39PM +0100, Trond Myklebust wrote:
> On Fri, 2007-01-05 at 10:42 +0800, Fengguang Wu 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)
>
> Are you perhaps running the userland NFS server instead of knfsd? The
> former will only support NFSv2.

I'm running kernel nfs servers:

USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
root 5451 0.0 0.0 0 0 ? S 19:30 0:00 [nfsd]
root 5452 0.0 0.0 0 0 ? S 19:30 0:00 [nfsd]
root 5453 0.0 0.0 0 0 ? S 19:30 0:00 [nfsd]
root 5454 0.0 0.0 0 0 ? S 19:30 0:00 [nfsd]
root 5455 0.0 0.0 0 0 ? S 19:30 0:00 [nfsd]
root 5456 0.0 0.0 0 0 ? S 19:30 0:00 [nfsd]
root 5457 0.0 0.0 0 0 ? S 19:30 0:00 [nfsd]
root 5458 0.0 0.0 0 0 ? S 19:30 0:00 [nfsd]
root 5449 0.0 0.0 0 0 ? S< 19:30 0:00 [rpciod/0]
root 5450 0.0 0.0 0 0 ? S< 19:30 0:00 [rpciod/1]
root 5462 0.0 0.0 7940 672 ? Ss 19:30 0:00 /usr/sbin/rpc.mountd
statd 5527 0.0 0.0 7892 1084 ? Ss 19:30 0:00 /sbin/rpc.statd
root 5538 0.0 0.0 23168 764 ? Ss 19:30 0:00 /usr/sbin/rpc.idmapd

My system is Debian etch. And I just found that CONFIG_NFSD_V4 is irrelevant,
the message remains even if it is disabled. I'll check more kernel versions.

Thanks,
Wu
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