[Pacemaker] Lustre and Multiple Mount Protection

Michael Schwartzkopff misch at multinet.de
Tue Dec 22 17:52:34 UTC 2009


Hi,

The Lustre Filesystem uses a feature called Multiple Mount Protection to make 
sure that one device is really only mounted by one node.

My question now: Is this feature really needed in a pacemaker cluster?

In a pacemaker cluster with correctly enables STONITH the cluster manager 
takes care that the resource is only mounted on one node, isn't it? At least 
in my understanding it should. Only after getting the positive feedback that 
the resource was stopped on the other node or the other node was fenced 
pacemaker starts the resource on the second node, or?

Greetings,


-- 
Dr. Michael Schwartzkopff
MultiNET Services GmbH
Addresse: Bretonischer Ring 7; 85630 Grasbrunn; Germany
Tel: +49 - 89 - 45 69 11 0
Fax: +49 - 89 - 45 69 11 21
mob: +49 - 174 - 343 28 75

mail: misch at multinet.de
web: www.multinet.de

Sitz der Gesellschaft: 85630 Grasbrunn
Registergericht: Amtsgericht München HRB 114375
Geschäftsführer: Günter Jurgeneit, Hubert Martens

---

PGP Fingerprint: F919 3919 FF12 ED5A 2801 DEA6 AA77 57A4 EDD8 979B
Skype: misch42




More information about the Pacemaker mailing list