User Manual

SCSI Commands Reference Manual, Rev. J 115
www.seagate.com Direct Access Block commands (SPC-5 and SBC-4)
3.13 PERSISTENT RESERVE IN command
3.13.1 PERSISTENT RESERVE IN command introduction
The PERSISTENT RESERVE IN command (see table 76) is used to obtain information about persistent reservations and reservation
keys (i.e., registrations) that are active within a device server. This command is used in conjunction with the PERSISTENT RESERVE
OUT command (see 3.14).
The service action codes for the PERSISTENT RESERVE IN command are defined in table 77.
Table 76 PERSISTENT RESERVE IN command
Bit
Byte
7 6 5 4 3 2 1 0
0
OPERATION CODE (5Eh)
1
Reserved SERVICE ACTION
2
Reserved
. . .
6
7
(MSB)
ALLOCATION LENGTH
8
(LSB)
9
CONTROL
Table 77 PERSISTENT RESERVE IN service action codes
Code Name Description Reference
00h
READ KEYS Reads all registered reservation keys (i.e., registrations) as described in SPC-5.
3.13.2
01h
READ RESERVATION Reads the current persistent reservations as described in SPC-5.
3.13.3
02h
REPORT CAPABILITIES Returns capability information
3.13.4
03h
READ FULL STATUS
Reads complete information about all registrations and the persistent reservations,
if any
3.13.5
04h - 1Fh
Reserved Reserved