You can use vxclustadm commands
# Vxclustadm -v nodestatestate: cluster member nodeId = 1 masterId = 1 - This is the master node id neighborId = 0 members = 0x3 joiners = 0x0 leavers = 0x0 reconfig_seqnum = 0x2a9209 vxfen = off # fsclustadm idtoname 1cluster2