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RELEASE UNIT
R
enables the host to release any reservation it may have on the drive. Reserving a
ELEASE UNIT
device is a way of ensuring exclusive access to that device from a single initiator for the period of
the reservation. The drive may be reserved using a
Pre-execution checks:
Illegal Field
Command descriptor block:
6-byte
7
0
1
2
4
5
3rdPty
Third-Party Device ID This bit is always zero because third-party reservation is not supported.
10-byte
7
0
1
2
3
4
6
7
(MSB)
8
9
10-byte only
3rd Pty
Deferred Error
Unit Attention
6
5
Operation Code (17h)
Reserved (0)
3rd Pty
This bit is always zero because third-party reservation is not supported.
6
5
Operation Code (57h)
Reserved (0)
3rd Pty
Third-Party Device ID
Parameter List Length
0 Third-party release is not requested.
1 The initiator requests third-party release. The value in the Third-Party
Device ID field is valid.
command.
RESERVE
4
3
2
Third-Party Device ID
Reserved (0)
Control
4
3
2
Reserved (0)
Reserved (0)
Reserved (0)
Control
17h/57h
1
0
Rsvd(0)
1
0
LongID
Rsvd(0)
(LSB)
RELEASE UNIT 17h/57h 135
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