[Lustre-discuss] Enabling mds failover after filesystem creation
jeff.johnson at aeoncomputing.com
Tue Jun 14 12:06:58 PDT 2011
I am attempting to add mds failover operation to an existing v1.8.4
filesystem. I have heartbeat/stonith configured on the mds nodes. What
is unclear is what to change in the lustre parameters. I have read over
the 1.8.x and 2.0 manuals and they are unclear as exactly how to enable
failover mds operation on an existing filesystem.
Do I simply run the following on the primary mds node and specify the
NID of the secondary mds node?
tunefs.lustre --param="failover.node=10.0.1.3 at o2ib" /dev/<mdt device>
where: 10.0.1.2=primary mds, 10.0.1.3=secondary mds
All of the examples for enabling failover via tunefs.lustre are for OSTs
and I want to be sure that there isn't a different procedure for the MDS
since it can only be active/passive.
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