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Chapter 4 SCSI Commands
RELEASE (10) Command (57h)
DLT-S4 Interface Reference Guide
278
RELEASE (10) Command (57h)
4
The
RELEASE
and
RESERVE
commands provide contention resolution in
multiple-initiator systems. The
RELEASE
(10) command releases a
previously reserved logical unit. The tape drive does not return an error if
an initiator attempts to release a reservation that is not currently valid.
Figure 139
RELEASE
(10)
Command Descriptor Block —
Data Format
Note:
This command has been made obsolete in the latest version of
SCSI-3 and should not be used with any new implementations.
The tape drive supports this command for legacy applications
only.
Bit
7
6
5
4
3
2
1
0
Byte
0
Operation Code (57h)
1
Reserved
3rdPty
Reserved
LongID
Extent (0)
2
Reservation Identification
3
Third Party Device ID
4 — 6
Reserved
7 — 8
(MSB)
Parameter List Length
(LSB)
9
Control