If you need to verify the status of ALUA on an EMC storage appliance, try the powermt command:
powermt display dev=all
If you see a see an output of failover mode 4, ALUA is enabled and functioning properly. If you see an output of failover mode 1, ALUA is disabled and not functioning.
Failover Mode 4 - ALUA Enabled
Failover Mode 1 - ALUA Disabled
Comments