Error mount NFS -- nfs4_get_rootfh

[Geoffrey Leach]

Fedora 16 on both server and client.

/etc/exports

/nfs4exports        192.168.0.0/24
(ro,sync,insecure,root_squash,no_subtree_check,fsid=0)
/nfs4exports/tmp   192.168.0.0/24
(rw,nohide,sync,insecure,root_squash,no_subtree_check)

ll -d  /nfs4exports /nfs4exports/*
drwxrwxrwt   5 root root 4.0K Dec 31 15:34 /nfs4export
ll -d  /nfs4exports /nfs4exports/*
drwxrwxrwt. 30 root root 4.0K Dec 31 16:06 /nfs4exports/tmp

client --
sysctl -w sunrpc.nfs_debug=1023
root at pvr[60]->mount -t nfs4 mtranch:/tmp /tmpm
mount.nfs4: access denied by server while mounting mtranch:/tmp
root at pvr[61]->dmesg|tail
[ 4840.385627] encode_compound: tag=
[ 4840.386755] nfs4_get_rootfh: getroot error = 13
[ 4840.386757] <-- nfs4_get_rootfh() = -13
[ 4840.386759] --> nfs_free_server()
[ 4840.387247] --> nfs_put_client({1})
[ 4840.387249] --> nfs_free_client(4)
[ 4840.387327] <-- nfs_free_client()
[ 4840.387337] <-- nfs_free_server()
[ 4840.387338] <-- nfs4_create_server() = error -13
[ 4840.387341] <-- nfs4_mount() = -13 [error]

The error is generated by /* getroot.c: get the root dentry for an NFS 
mount ...
	/* Start by getting the root filehandle from the server */
	ret = server->nfs_client->rpc_ops->getroot(server, mntfh, 
&fsinfo);
	if (ret < 0) {
		dprintk("nfs4_get_rootfh: getroot error = %d\n", -ret);
		goto out;
	}

So, what the .... is the root filehandle in this context and how do I 
define it?