Apologies, I should have been more descriptive.
I am running a dedicated MGS node and MGT device. The MDT is a
standalone RAID-10 shared via SAS between two nodes, one being the
current MDS and the second being the planned secondary MDS. Heartbeat
and stonith w/ ipmi control is currently configured but not started
between the two nodes.
On 6/14/11 12:12 PM, Cliff White wrote:
It depends - are you using a combined MGS/MDS?
If so, you will have to update the mgsnid on all servers to reflect
the failover node,
plus change the client mount string to show the failover node.
otherwise, it's the same procedure as with an OST.
cliffw
On Tue, Jun 14, 2011 at 12:06 PM, Jeff Johnson
<jeff.john...@aeoncomputing.com
<mailto:jeff.john...@aeoncomputing.com>> wrote:
Greetings,
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@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.
Thanks,
--Jeff
------------------------------
Jeff Johnson
Aeon Computing
www.aeoncomputing.com <http://www.aeoncomputing.com>
4905 Morena Boulevard, Suite 1313 - San Diego, CA 92117
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--
cliffw
Support Guy
WhamCloud, Inc.
www.whamcloud.com <http://www.whamcloud.com>
------------------------------
Jeff Johnson
Aeon Computing
www.aeoncomputing.com
4905 Morena Boulevard, Suite 1313 - San Diego, CA 92117
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