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Chapter 8 SCSI Commands
8.14.1. Logical unit release
When the Element bit is 0, the command releases a valid autoloader or element
reservation in the logical unit specified by the host.
8.14.2. Element release
When the Element bit is 1, the command releases the reservation of the element
requested by the host that matches the reservation ID. Reservations not
requested by the host are maintained.
8.14.3. Third party release
The autoloader does not support Third Party Reservation, therefore the 3rdPty
bit and Third party device ID field are always 0. If this is a value other than 0,
the command is terminated with a CHECK CONDITION status. The sense key
is ILLEGAL REQUEST and ASC/ASCQ is INVALID FIELD IN CDB.
8.15. REPORT LUNS Command (A0h)
The REPORT LUNS command returns Logical Unit Numbers supported by the
autoloader. This command is not affected by RESERVE. The allocation size
must be at least 16 bytes. If the allocation size is less than 16 bytes, a CHECK
CONDITION is returned. The sense key is ILLEGAL REQUEST and ASC/
ASCQ is INVALID FIELD IN CDB. The autoloader only supports one Logical
Unit, therefore even if the allocation size is larger than 16 bytes, the returned
data is 16 bytes.
Table 8.15.1 : REPORT LUNS command
Bit
Byte
7
6
5
4
3
2
1
0
0
Operation code (A0h)
1
Logical unit number(0h)
Reserved(0h)
2
Reserved(0h)
3
Reserved(0h)
4
Reserved(0h)
5
Reserved(0h)
6
(MSB)
Allocation Length
7
8
9
(LSB)
10
Reserved(0h)
11
Control(0h)
