nice function..very helpful while performing any storage maintenance..I need few more work around on this.. Is it possible to skip unmount/detach the lun where vms running cluster..For example..

if  a single lun is mapped to three clusters in a data center  but In only one cluster vms are running and rest of two clusters there is only connectivity..now if I execute the above function it should skip the cluster where vms running and unmount rest of two clusters..