Attached is a SQL query that can be run against VCenter and used for LUN to VM, LUN to Datastore, and LUN to HOST mapping.
Here's the columns created and populated with this query.
| name | Datastore | Host | device_name | HOST_ID | SCSI_LUN_ID | LUN_ID_VAL | KEY_VAL | LINK_KEY | SATP_POLICY | path_state | link_key | path_name |
This is fully functional, tested on ESX5.8 and ready to be added to the VMWare connector in Datalink.