HP C2488A

Release
Release
The RELEASE command is used to release previously reserved logical units. It is not an
error for an
Initiator to attempt to release a reservation that is not currently active. In this
case,
the Target returns GOOD status without altering any other reservation. A third-party
release option for the RELEASE command allows an Initiator to release a logical unit that
was previously reserved using the third-party reservation option.
Release Command Descriptor Block (CDB)
Bit
Byte
7
I
6
I
5
I
4
I
3
I
2
I
1
I
0
00 Opcode = 17H
01 Logical Unit Number
J 3RDPTY I
Third Party Device ill
I XTNT=O
02
Reservation Identification = 00
03-04
(MSB=03) Reserved (LSB=04)
05
Control Byte
3RDPTY (Third-Party). If the 3RDPTY bit is set to one (1), the Target shall release the
specified logical unit, but only if the reservation was made using the third-party reservation
option by
the same Initiator for the same SCSI device as specified in the Third-Party Device
ID field.
If the 3RDPTY bit is set to zero (0), the third-party release option is not requested.
DRAFT
SCSI Command Descriptions A·41
1/18/93 09:58