Usage: sg_persist [OPTIONS] [DEVICE]
  where the main OPTIONS are:
    --clear|-C                 PR Out: Clear
    --help|-h                  print usage message, twice for more
    --in|-i                    request PR In command (default)
    --out|-o                   request PR Out command
    --param-rk=RK|-K RK        PR Out parameter reservation key
                               (RK is in hex)
    --param-sark=SARK|-S SARK    PR Out parameter service action
                                 reservation key (SARK is in hex)
    --preempt|-P               PR Out: Preempt
    --preempt-abort|-A         PR Out: Preempt and Abort
    --prout-type=TYPE|-T TYPE    PR Out type field (see '-hh')
    --read-full-status|-s      PR In: Read Full Status
    --read-keys|-k             PR In: Read Keys (default)
    --read-reservation|-r      PR In: Read Reservation
    --read-status|-s           PR In: Read Full Status
    --register|-G              PR Out: Register
    --register-ignore|-I       PR Out: Register and Ignore
    --register-move|-M         PR Out: Register and Move
                               for '--register-move'
    --release|-L               PR Out: Release
    --replace-lost|-x          PR Out: Replace Lost Reservation
    --report-capabilities|-c   PR In: Report Capabilities
    --reserve|-R               PR Out: Reserve
    --unreg|-U                 optional with PR Out Register and Move

Performs a SCSI PERSISTENT RESERVE (IN or OUT) command. Invoking
'sg_persist DEVICE' will do a PR In Read Keys command. Use '-hh'
for more options and TYPE meanings.