[Lustre-discuss] NFS export problem

Ralf Utermann ralf.utermann at physik.uni-augsburg.de
Wed May 13 04:53:52 PDT 2009


Oleg Drokin wrote:
> Hello!
> 
> On Apr 23, 2009, at 4:29 AM, Ralf Utermann wrote:
>>>> kernel: nfs_stat_to_errno: bad nfs status return value: 45
>>> Do you mean "43" instead of "45"?  Please see thread this week about
>>> OS/X client + NFS export on this same list.
>> It is really 45, not the 43 from the OS/X thread.
> 
> That's really weird.
> 45 stands for
> #define EL2NSYNC        45      /* Level 2 not synchronized */
> 
> We really do not use this error value (and I don't even have idea
> what it's supposed to mean).
> 
>>>> All systems have nss  access to the same user database, although
>>>> the example above does not even need this (no root squash on
>>>> Lustre and NFS).
>>> If you are sure the numeric userid is the same on the NFS client and
>>> the MDS then it may be a different issue.  Please run "id" on the
>>> client to list the userid, and "/usr/sbin/l_getgroups -d {uid}" on
>>> the MDS to verify that the UID can be resolved properly.
>> I have the problems with user root, as well as with other users. The
>> uid is definitely the same on the systems:
> 
> What might be useful is if you can reproduce this quickly n as few set  
> of
> Lustre nodes as possible.
> remember your current /proc/sys/lnet/debug value.
> on lustre-client/nfs-server and on MDS echo -1 >/proc/sys/lnet/debug
> then do lctl dk >/dev/null (on those same two nodes).
> Reproduce the problem and do lctl dk >/tmp/somefile on both of the nodes
> again as soon as possible after the problem was reproduced.

I did this on both  lustre-client/nfs-server and on MDS.
The output of lctl dk on both is only:

Debug log: 0 lines, 0 kept, 0 dropped, 0 bad.


Regards, Ralf
-- 
        Ralf Utermann
_____________________________________________________________________
        Universität Augsburg, Institut für Physik   --   EDV-Betreuer
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        SMTP: Ralf.Utermann at Physik.Uni-Augsburg.DE         Fax: -3411



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