Identifying Master Node on Cluster Volume Manager

root@indhost-s71.prd:/etc/vx/bin# vxdctl -c mode
mode: enabled: cluster active - SLAVE
master: indhost-s72

Here cluster volume Manager is installed.
Need to make sure you need to ask the storage team to make visisble any disk to following all nodes:
root@indhost-s71.prd
root@indhost-s72.prd--- Master Node
root@indhost-s91.prd
root@indhost-s92.prd