Lustre 1.6 Operations Manual

5.1.5 Determine Appropriate Mount Parameters for
Clients
In their mount commands, clients use the NID of the MDS host to retrieve their
configuration information. Since an MDS may have more than one NID, a client
should use the appropriate NID for its local network. If you are unsure which NID
to use, there is a lctl command that can help.
MDS
On the MDS, run:
lctl list_nids
This displays the server's NIDs.
Client
On a client, run:
lctl which_nid
This displays the closest NID for the client.
Client with SSH Access
From a client with SSH access to the MDS, run:
mds_nids=`ssh the_mds lctl list_nids`
lctl which_nid $mds_nids
This displays, generally, the correct NID to use for the MDS in the mount command.
Chapter 5 Configuring the Lustre Network 5-3