User's Guide
Table Of Contents
- Preface
- Theory of Operation
- Media Changer Commands
- Overview of Command and Status Processing
- Media Changer Command Descriptions
- Initialize Element Status Command (07h)
- Inquiry Command (12h)
- Load Unload Command (1Bh)
- Log Sense Command (4Dh)
- Mode Select (6) / (10) Command (15h / 55h)
- Mode Sense (6) / (10) Command (1Ah/ 5Ah)
- Move Medium Command (A5h)
- Persistent Reserve In Command (5Eh)
- Persistent Reserve Out Command (5Fh)
- Position to Element Command (2Bh)
- Prevent/Allow Medium Removal (1Eh)
- Read Buffer Command (3Ch)
- Read Element Status Command (B8h)
- Release Element (10) Command (57h)
- Release Unit (6) Command (17h)
- Report Device Identifier Command (A3h)
- Report LUNS Command (A0h)
- Request Sense Command (03h)
- Reserve Element (10) Command (56h)
- Reserve Element (6) Command (16h)
- Send Diagnostic Command (1Dh)
- Set Device Identifier Command (A4h)
- Test Unit Ready Command (00h)
- Write Buffer Command (3Bh)
- Index
Chapter 2 Media Changer Commands
Persistent Reserve In Command (5Eh)
Quantum SuperLoader 3 Software Interface Guide 74
The figure and table below illustrate and describe the data fields of each
Read Reservations descriptor’s data fields.
Figure 48 Persistent Reserve
In Read Reservations
Additional
Length
This field contains the count of the number of bytes of Reservation descriptors
(bytes 8 – n). Note that this field contains the number of bytes regardless of the
value prescribed by the
Allocation Length field in the command’s CDB.
Reservations
Descriptors
One
Reservation descriptor is reported for each unique persistent reservation
on the logical unit when the
PERSISTENT RESERVE IN command has indicated
a
Read Reservations action. Figure 48 and table 36 detail the contents of each
Reservation Descriptors field.
Bit
Byte765 43210
0 - 7
(MSB)
Reservation Key
(LSB)
8 - 11
(MSB)
Scope-Specific Address
(LSB)
12
Reserved
13
Scope Type
14 - 15
Obsolete
Field Name Description