Matt Hollingsworth wrote:

[EMAIL PROTECTED] ~]# mount.lustre 10.0.0.243:/cms-mds/client /var/writable/cms-lustre/

mount.lustre: mount([EMAIL PROTECTED]:/cms-mds/client, /var/writable/cms-lustre/) failed: No such device

mds nid 0: [EMAIL PROTECTED]

mds name: cms-mds

profile: client

options:

retry: 0

Are the lustre modules loaded?

^^^^^^^^^^^ Hint #1

Check /etc/modprobe.conf and /proc/filesystems

[EMAIL PROTECTED] ~]#

and this pops up in the error log:

Feb 14 04:50:07 localhost kernel: LustreError: 6053:0:(genops.c:224:class_newdev()) OBD: unknown type: osc

^^^^^^^^^^^ Hint #2

Feb 14 04:50:07 localhost kernel: LustreError: 6053:0:(obd_config.c:102:class_attach()) Cannot create device OSC_osg1.<mydomain>_node253-ost-sda_MNT_client-000001011f659c00 of type osc : -19

Feb 14 04:50:07 localhost kernel: LustreError: mdc_dev: The configuration 'client' could not be read from the MDS 'cms-mds'. This may be the result of communication errors between the client and the MDS, or if the MDS is not running.

Feb 14 04:50:07 localhost kernel: LustreError: 6053:0:(llite_lib.c:936:lustre_fill_super()) Unable to process log: client

Any idea what’s going on here?

The 'osc' module must be loaded on the mds and clients. It seems that it's not at least on this client. You should be able to modprobe it by hand and make sure it loads - see if there's maybe a symbol mismatch.

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