Persistent Reserve In Command (5Eh) - Seagate SCSI Interface Product Manual

SCSI Interface Product Manual, Rev. J
5.15

Persistent Reserve In command (5Eh)

The Persistent Reserve In command (see Table 107) is used to obtain information about persistent reserva-
tions and reservation keys that are active within a device server. This command is used in conjunction with the
Persistent Reserve Out command (see Section 5.16). For additional information about Reservations, see Sec-
tion 5.35.5.
When a device server receives a Persistent Reserve In command during the same time Reserve (10) or
Reserve (6) logical unit or extent reservations or SMC element reservations are active (see 5.35 and 5.36), the
command shall be rejected with a Reservation Conflict status. A Persistent Reserve In command shall not con-
flict with any persistent reservation.
Table 107: Persistent Reserve In command (5Eh)
Bit 7
Byte
0 Operation Code (5Eh)
1
2 Reserved
3 Reserved
4 Reserved
5 Reserved
6 Reserved
7 (MSB)
8
9 Control [3]
Notes.
[1] The actual length of the Persistent Reserve In parameter data is available in a parameter data field. The
Allocation Length field in the CDB indicates how much space has been reserved for the returned parame-
ter list. If the length is not sufficient to contain the entire parameter list, the first portion of the list shall be
returned. This shall not be considered an error. If the remainder of the list is required, the application client
should send a new Persistent Reserve In command with an Allocation Length field large enough to con-
tain the entire list.
[2] The Service action codes for the Persistent Reserve In command are defined in Table 108.
6 5
Reserved
4 3
Service Action [2]
Allocation Length [1]
2 1
(LSB)
153
0