[Lustre-discuss] NFS export problem

anil kumar anil.k.kv at gmail.com
Wed Apr 22 04:02:09 PDT 2009


Ralf,

I could fix similar issue on RHEL 5 by updating following /etc/exports
entries,

/lustremnt  *(rw,no_root_squash,async)
no_root_squash is important

Thanks,
Anil
On Wed, Apr 22, 2009 at 2:35 PM, Ralf Utermann <
ralf.utermann at physik.uni-augsburg.de> wrote:

> Dear list,
>
> on a Debian etch system, I have NFS-mounted a Lustre
> filesystem. The mount was possible without error. However,
> when I want to access this NFS-mounted Lustre filesystem, I see the
> following error message on the NFS client system:
>
> # ls -l /alcc/alf1/
> total 0
> ?--------- ? ? ? ?                ? /alcc/alf1/admin
> # ls -ld /alcc/alf1/admin
> ls: /alcc/alf1/admin: Input/output error
>
> each time I access the NFS mounted Lustre system, I see
> a syslog entry on the client like:
>
> kernel: nfs_stat_to_errno: bad nfs status return value: 45
>
> The Lustre client which acts as the NFS server and the Lustre MDT
> don't show any error in the logs. On the Lustre client, /alcc/alf1
> is the mount point for the Lustre filesystem and this is exported
> with NFS:
> # ls -ld /alcc/alf1/admin
> drwxr-xr-x 3 root root 4096 2009-03-24 10:38 /alcc/alf1/admin
> # exportfs -v -r
> exporting 192.168.2.0/24:/alcc/alf1
>
> The Lustre client (and servers) are Debian Lenny systems running a
> vanilla 2.6.22.19 kernel with Lustre 1.6.7(+ the latest critical patch).
> 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).
>
> Any hints?
> TIA, Ralf
> --
>        Ralf Utermann
> _____________________________________________________________________
>        Universität Augsburg, Institut für Physik   --   EDV-Betreuer
>        Universitätsstr.1
>        D-86135 Augsburg                     Phone:  +49-821-598-3231
>        SMTP: Ralf.Utermann at Physik.Uni-Augsburg.DE         Fax: -3411
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