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(2) PERSISTENT RESERVE OUT parameter list
The parameter list of the PERSISTENT RESERVE OUT command are shown in
Table 4.92.
Some fields of the parameter list of a particular Service Action and scope values
may be invalid, but all the fields must always be transferred.
Table 4.92 PERSISTENT RESERVE OUT parameter list
Bit
Byte
0
(MSB)
~
~
7
8
(MSB)
~
~
15
16
(MSB)
~
~
19
20
21-23
The "Reservation Key" field contains an 8-byte key code provided by the application
client to identify the initiator that is the source of the PERSISTENT RESERVE OUT
command. The drive checks whether the contents of the "Reservation Key" field
received with the PERSISTENT RESERVE OUT command matches the Reservation
Key registered by the INIT that has issued the command. However, if all the
registered Reservation Keys are zero (not registered), the value specified in this field is
ignored. If a key that is different from the Reservation Key for the relevant INIT is
specified by the PERSISTENT RESERVE OUT command, the drive reports a
RESERVATION CONFLICT status. All the Reservation Keys of this INIT are valid
for Service Actions and scopes.
The specification of the "Service Action Reservation Key" field is necessary for the
REGISTER, PREEMPT, and PREEMPT and ABORT Service Actions. For the
REGISTER Service Action, a Reservation Key to be newly registered is set in this
field. For the PREEMPT and, PREEMPT and ABORT Service Actions, the
Reservation Key of the INIT that holds a reserve condition to be cleared (preempted) is
set in this field. For the PREEMPT and, PREEMPT and ABORT Service Actions, if
the value specified in this field does not match any of the Reservation Keys registered,
C141-C009
7
6
5
Reservation Key
Service Action Reservation Key
Scope-specific Address
Reserved
X'000000' (Reserved)
4.1 Control/Sense Commands
4
3
2
1
0
~
(LSB)
~
(LSB)
~
(LSB)
APTPL
4-129
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