[DRBD-user] DRBD and KVM for a HA-Cluster ?

Lentes, Bernd bernd.lentes at helmholtz-muenchen.de
Fri Jan 7 00:25:35 CET 2011

Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.


Digimer wrote:

On 01/06/2011 03:14 PM, Lentes, Bernd wrote:
>> How can a dual primary solution works, when i install the VM's in a plain lv ?  Don't i need a cluster aware filesystem (like OCFS2) for a dual primary solution ?
>>
>> Bernd

>Dual-Primary does not require a cluster. The LVM is below the DRBD
>device, as you've described your implementation, so it has no expose to
>the cluster.

>Each LV is, ultimately, an OS and totally independent. The data on each
>LV will not be modified from both nodes at the same time, so cluster
>locking is not needed (unless you tried to start the VM on both nodes,
>which would fail for many other reasons, too).

Hi,

i thought dual primary means, that i have services (like a VM) running on both nodes. Am i wrong ?


Bernd


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