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SCSI Commands: 25BPERSISTENT RESERVE IN
Page
114
3.13
PERSISTENT RESERVE IN
The PERSISTENT RESERVE IN command is used to obtain information about
persistent reservations and reservation keys that are active within a device server.
This command is used in conjunction with the PERSISTENT RESERVE OUT
command.
3.13.1
PERSISTENT RESERVE IN Command Descriptor Block
Byte
Bits
7 6 5 4 3 2 1 0
0
Operation Code (5Eh)
1
Reserved Service
Action
2
Reserved
3
Reserved
4
Reserved
5
Reserved
6
Reserved
7
(MSB)
8
Allocation Length
(LSB)
9
Control
3.13.1.1
PERSISTENT RESERVE IN Command Field Descriptions
Field
Bytes
Bits
Description
Operation
Code
0
The Operation Code for PERSISTENT RESERVE IN is 5Eh.
Service
Action
1
0-4
00h = READ KEYS Reads all registered Reservation Keys
01h = READ RESERVATION Reads the current persistent
reservations
Allocation
Length
7-8 How much space has been allocated for the returned parameter
list.
Reserved
All reserved bits must be 0.
Control 9
See
SCSI Command Control Byte Format on page 25.
Summary of Contents for LTO 4
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