[ClusterLabs] DRBD, dual-primary, Live-Migration - Cluster FS necessary ?

[Lentes, Bernd]

Hi,

i just want to be sure. I created a DRBD partition in a dual primary setup. I have a VirtualDomain (KVM) resource which resides in the naked DRBD (without FS), and i can live migrate.
Are there situations where in this setup a cluster fs is necessary/recommended ? I'd like to avoid it, it causes more complexity.
Btw: resource level fencing is necessary. Is the setup for dual-primary the same as with single-primary ?

My cluster: SLES 11 SP4, DRBD 8.4.4, pacemaker 1.12.

Thanks.


Bernd


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Bernd Lentes 

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