Persistent Reserve In
96122 • Revision: F Chapter 6 SCSI Commands 173
Persistent Reserve In Data for Report Capabilities
The format for the parameter data provided in response to a Persistent Reserve In
command with the Report Capabilities service action is shown in TABLE 6-62.
TABLE 6-62 Persistent Reserve In Parameter Data for Report Capabilities
Byte
Bit
76543210
0
to
1
(MSB)
Length (0008h)
(LSB)
2 Reserved (00h) SIP_C
(0)
ATP_C
(0)
Rsvd (0) PTPL_C
(1)
3 TMV (1) Reserved (00h) PTPL_A
4
to
5
(MSB)
Persistent Reservation Mask
(LSB)
6
to
7
Reserved (00h)
Persistent Reserve In parameter data for Report Capabilities Definitions:
Length This field indicates the length in bytes of the parameter data.
SIP_C The library will return a value of 0 for the Specify Initiator Ports Capable bit,
indicating the SPEC_I_PT bit in the PERSISTENT RESERVE OUT command
parameter data is not supported.
ATP_C The library will return a value of 0, indicating the ALL_TG_PT bit in the
PERSISTENT RESERVE OUT command parameter data is not supported
PTPL_C Persist Through Power Loss Capable bit
■ 0 = The library does not support the persist through power loss capability
for persistent reservations and the APTPL bit in the in PERSISTENT
RESERVE OUT command parameter data
■ 1 = The library supports the persist through power loss capability for
persistent reservations and the APTPL bit in the in PERSISTENT RESERVE
OUT command parameter data
TMV Type Mask Valid bit
■ 0 = The PERSISTENT RESERVATION TYPE MASK field shall be ignored
■ 1 = The PERSISTENT RESERVATION TYPE MASK field contains a bit map
indicating which persistent reservation types are supported by the library.
PTPL_A Persist Through Power Loss Activated bit
■ 0 = The persist through power loss capability is not activated.
■ 1 = Persist through power loss capability is activated because the most recent
successfully completed PERSISTENT RESERVE OUT command with
REGISTER or REGISTER AND IGNORE EXISTING KEY or RESERVE or
RELEASE service action had the APTPL bit set to one in the parameter data.
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