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22.
BYTE
BIT 7
00
Operation Code 17h
01
Logical Unit Number (LUN)
02
Reservation Identification
03
RESERVED
04
RESERVED
05
Control Byte
Table 22-1:
3RD
3RD Party ID
Extent
Reservation
Identification
Release
22.1. Command Description
The RELEASE command will release the Drive if it is
currently reserved by the requesting Initiator.
It is not an error to attempt to release the Drive if it
is not currently reserved by the requesting Initiator.
However,
the
Drive
reserved by another Initiator (the RELEASE command will
just be ignored).
The third-party release option allows an Initiator to
release the Drive if it was previously reserved using
the
third-party
Section). This option is intended for use in multiple-
initiator systems.
If disconnection is allowed, the Drive will disconnect.
22.2. Command Descriptor Block
6
5
RELEASE Command Descriptor Block
If the third-party (3RD) bit is zero, then the third-
party release option is not requested. If the 3RD bit is
one the host wishes to release a reservation it has made
for a third-party host.
This field specifies the ID of the third-party device.
This field will be ignored if the 3RD bit is not set to
one.
The Extent bit must be set to zero (extent release is
not supported).
The
Reservation
zero.
22-1
Tandberg SLR Product Line SCSI Functional Specifications
will
not
be
reservation
option
4
3
3RD
3RD Party ID
Identification
field
released
if
it
(see
RESERVE
2
1
0
Extent
must
be
set
is
to
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