[Lustre-discuss] Lustre 2.5.2 Client Errors

Murshid Azman murshid.azman at gmail.com
Mon Aug 25 21:28:08 PDT 2014

Hello Oleg,

Thanks for your response.

The kernel I'm using is 2.6.32-279.19.1.el6.x86_64

This client mounts NFS shares from another server. They're not mounted
directly onto Lustre filesystem, but rather onto a tmpfs filesystem
residing in the memory.

[root at node01 ~]# df -h /
Filesystem            Size  Used Avail Use% Mounted on
tmpfs                  50M  484K   50M   1% /

I've removed the NFS mounts but can still see the same error. This client
does not share NFS to others.

Thank you.

Murshid Azman.

On Fri, Aug 22, 2014 at 9:12 PM, Drokin, Oleg <oleg.drokin at intel.com> wrote:

> Hello!
> On Aug 22, 2014, at 3:28 AM, Murshid Azman wrote:
> > We're trying to run a cluster image on Lustre filesystem version 2.5.2
> and repeatedly seeing the following message. Haven't seen anything bizarre
> on this machine other than this:
> >
> > 2014-08-22T13:52:01+07:00 node01 kernel: LustreError:
> 4271:0:(namei.c:530:ll_lookup_
> > it()) Tell Peter, lookup on mtpt, it open
> > 2014-08-22T13:52:01+07:00 node01 kernel: LustreError:
> 4271:0:(namei.c:530:ll_lookup_it()) Skipped 128 previous similar messages
> >
> > This doesn't happen to our desktop Lustre clients.
> >
> > I'm wondering if anyone has any idea what this means.
> This is one of those "impossible condition has been met" messages.
> Essentially it means that we got a lookup call for a mountpount,
> which should not happen because it's a mountpoint, so it's always valid
> and pinned in memory at the very least.
> What kernel do you use? anything else interesting about this client - e.g.
> NFS rexport?
> Bye,
>     Oleg
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