On Sat, Aug 22, 2009 at 01:50:52AM +0800, Chuck Lever wrote: > > On Aug 20, 2009, at 10:36 PM, Trond Myklebust wrote: > > > On Fri, 2009-08-21 at 09:27 +0800, Wu Fengguang wrote: > >> 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! > > > > Chuck, this looks like one of yours. Could it be that you are hitting > > the same Linux knfsd bug that Tom Haynes saw with a Solaris client? > > AFAICR, the problem was that existing nfs servers do not set a default > > auth flavour, and so you just have to try with auth_sys and see if it > > succeeds... > > With 1024 set, the mount client's XDR routines should have listed the > server's flavors, if any, in the system log. Should be something like > "NFS: received 0 auth flavors" if the server didn't return any. Can > you confirm that? Yes. The full logs are: Aug 21 09:54:38 hp kernel: [ 74.671552] NFS: nfs mount opts='nolock,addr=192.168.11.2' Aug 21 09:54:38 hp kernel: [ 74.677150] NFS: parsing nfs mount option 'nolock' Aug 21 09:54:38 hp kernel: [ 74.682204] NFS: parsing nfs mount option 'addr=192.168.11.2' Aug 21 09:54:38 hp kernel: [ 74.688234] NFS: MNTPATH: '/cc' Aug 21 09:54:38 hp kernel: [ 74.691468] NFS: sending MNT request for pxe:/cc Aug 21 09:54:38 hp kernel: [ 74.704458] NFS: received 0 auth flavors Aug 21 09:54:38 hp kernel: [ 74.708587] NFS: MNT request succeeded Aug 21 09:54:38 hp kernel: [ 74.712435] NFS: server does not support requested auth flavor Aug 21 09:54:38 hp kernel: [ 74.718358] NFS: sending UMNT request for pxe:/cc > I'll try to post a fix later today. Thanks! Fengguang -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
