[Linux-cluster] SCSI PR fencing

[Rajeev P]

Hi,

Consider a two node RHEL5 cluster that is configured with SCSI PR fencing
but without a qdisk. In the event of network split, nodes will attempt to
fence the other one. One of the node's (node that lost the race) key will be
successfully removed from the disk and key of the node that won race will be
present on the disk.

The question I have is that, in the event of a network split, is there a
possibility (even remote) for both the nodes to "successfully" fence each
other? That is key of both the nodes are successfully removed from the
disk.

I am trying draw comparision with HP iLO fencing mechanism, where there is
possibily for the nodes to fence each and hence bringing down the entire
cluster.

Thanks,
Rajeev Purushottam
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