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Command Specifications
The format of the Reservation descriptors is defined in Table 4.27.
Table 4.27 Format of reservation descriptors
Bit
7
Byte
0
(MSB)
~
~
7
8
(MSB)
~
~
11
12
13
14-15
The Reservation Descriptor in the parameter data contains the information on
each reserve condition held in the logical unit. The Descriptor contains the
Reservation key of the INIT that holds the reserve conditions. It also contains the
"Type" and "Scope" reserve condition values specified by the PERSISTENT
RESERVE OUT command.
The "Reservation key" field indicates the Reservation key registered with its
reserve condition. If each INIT uses a key specific to itself, the application needs
to know the association of the INIT that holds a reserve condition with a
Reservation key.
If the "Scope" value is element reserve, the "Scope-specific Address" field
indicates the element address (with the high byte filled with 0's). If the Scope
value is logical unit reserve, the "Scope-specific Address" field is set to zero.
Remarks: Element reserve is not supported.
198
6
5
4
Reservation Key
Scope-specific Address
X'00' (Reserved)
Scope
X'00' (Reserved)
3
2
1
Type
0
~
(LSB)
~
(LSB)
C141-C013
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