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The GENERATION field shall contain a 32-bit counter maintained by the device
server that shall be incremented every time a PERSISTENT RESERVE OUT
command requests a REGISTER, a REGISTER AND IGNORE EXISTING KEY, a
CLEAR, a PREEMPT, or a PREEMPT AND ABORT service action. The counter shall
not be incremented by a PERSISTENT RESERVE IN command, by a PERSISTENT
RESERVE OUT command that performs a RESERVE or RELEASE service action, or
by a PERSISTENT RESERVE OUT command that is terminated due to an error or
reservation conflict. Regardless of the APTPL bit value the generation value shall be
set to zero as part of the power on reset process.
The additional length field contains a count of the number of bytes in the Reservation
key list. If the allocation length specified by the PERSISTENT RESERVE IN
command is not sufficient to contain the entire parameter list, then only the first
portion of the list (byte 0 to the allocation length) shall be sent to the application
client. The incremental remaining bytes shall be truncated, although the additional
length field shall still contain the actual number of bytes in the reservation key list
without consideration of any truncation resulting from an insufficient allocation
length. This shall not be considered an error.
The reservation key list contains the 8-byte reservation keys for all initiators that
have registered through all ports with the device server.
The format for the parameter data provided in response to a PERSISTENT
RESERVE IN command with the READ RESERVATION service action is shown in
Table 5.83.
Bit
Byte
0
(MSB)
•
•
3
4
(MSB)
•
•
7
PERSISTENT RESERVE IN:(5Eh)
5 COMMAND DESCRIPTIONS
Table 5.83 READ RESERVATION Parameter Data
7
6
5
4
3
GENERATION
Additional Length(N-7)
OEM MANUAL:K6602924
2
1
0
(LSB)
(LSB)
(cont'd)
Revision: 1 / Date: 2003.03.06
Page: 189 / 273
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