Unrecognized switch: --help
Usage:  sg_emc_trespass [-d] [-hr] [-s] [-V] DEVICE
  Change ownership of a LUN from another SP to this one.
  EMC CLARiiON CX-/AX-family + FC5300/FC4500/FC4700.
    -d : output debug
    -hr: Set Honor Reservation bit
    -s : Send Short Trespass Command page (default: long)
         (for FC series)
    -V: print version string then exit
     DEVICE   sg or block device (latter in lk 2.6 or lk 3 series)
        Example: sg_emc_trespass /dev/sda