Cluster Lock Disk

[P Arumugavel]

Hi,

If a two-node cluster experiences the loss of all network connections between the nodes. This means that cluster heartbeat ceases. Each node will then try to re-form the cluster separately. This is called split-brain situation. If this were allowed to occur, it would have the potential to run the same application in two different locations and to corrupt application data. In a split-brain scenario, different incarnations of an application could end up simultaneously accessing the same disks. One incarnation might well be initiating recovery activity while the other is modifying the state of the disks. Lock disk requirement is designed to prevent a split-brain situation.

Rgds...

[rooble]

thanks all