Release; Table 6-78 Release Command (6) - Sun Microsystems storagetek sl500 Reference Manual

Release (6)

Release (6)
The 6-byte Release command (17h) enables the initiator to release unit or element
reservations of the library as set using a previous Reserve command.
Performing a unit release of a library that has no active reservations is not
considered an error. Only the initiator that performed the reservation can release
the reservation. If another initiator attempts to release a unit reservation, the
library returns good status, but does not release the reservation.

TABLE 6-78 Release Command (6)

Byte 7
0
1
2
3
4
5
Release Element Definitions:
Element
Reservation
Identification
204 SL500: Interface Reference Manual • July 2008
6 5
Operation Code (17h)
Ignored
Reservation Identification
Control Byte (00h)
This bit indicates if the release is an element release:
0 = The library or any elements reserved by the initiator are to be released
■
from reserved status.
1 = The reserved elements associated with the Reservation Identification
■
field from this initiator are to be released from reserved status.
This field is a value established by the initiator in a previous
Reserve command.
The field identifies the specific element reservation to be released.
If an invalid Reservation Identification is specified, the library returns a Check
Condition status. If the Element bit is 0, ignore this field.
Bit
4 3
Reserved (0h)
Reserved (00h)
Reserved (00h)
2 1 0
Element
Revision: F • 96122