Datasheet

Command Specifications
4-122 C141-C008
Table 4.85 Format of reservation descriptors
Bit
Byte
7 6 5 4 3 2 1 0
0 (MSB)
Reservation Key
7 (LSB)
8 (MSB)
Scope-specific Address
11 (LSB)
12 X'00' (Reserved)
13 Scope Type
14-15 X'00' (Reserved)
If a persistent reservation is present in the logical unit that does not contain
elements, there shall be a single Reservation descriptor in the list of parameter
data returned by the device server in response to the PERSISTENT RESERVE IN
command with a READ RESERVATIONS service action. The Reservation
descriptor for each reservation shall contain the RESERVATION KEY under
which the persistent reservation is held. The "Type" and "Scope" of each
persistent reservation as present in the PERSISTENT RESERVE OUT command
that created the persistent reservation shall be returned.
If a persistent reservation is present in the logical unit that does contain elements,
there shall be a Reservation descriptor in the list of parameter data returned by the
device server in response to the PERSISTENT RESERVE IN command with a
READ RESERVATIONS service action for the Logical Unit persistent
reservation that is held, if any, and each element persistent reservation that may
be held. The Reservation descriptor shall contain the RESERVATION KEY
under which the persistent reservation is held. The "Type" and "Scope" of the
persistent reservation as present in the PERSISTENT RESERVE OUT command
that created the persistent reservation shall be returned.
If the "Scope" is an Element reservation, the "Scope-specific Address" field shall
contain the element address, zero filled in the most significant bytes to fit the
field. If the "Scope" is a Logical Unit reservation, the "Scope-specific Address"
field shall be set to zero.
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