For this case, both LUN_ID are ended with a string of zeros. How can we
determine which one is "uncessary zeros"?

*********** output for "lsattr -El" ******************
$ lsattr -El -hdisk6
lun_id 0x8000000000000 => LUN ID = 0x8
$ lsattr -El -hdisk7
lun_id 0x40000000000000 => LUN ID = 0x40