User's Guide
Table Of Contents
- Preface
- Theory of Operation
- Media Changer Commands
- Overview of Command and Status Processing
- Media Changer Command Descriptions
- Initialize Element Status Command (07h)
- Inquiry Command (12h)
- Load Unload Command (1Bh)
- Log Sense Command (4Dh)
- Mode Select (6) / (10) Command (15h / 55h)
- Mode Sense (6) / (10) Command (1Ah/ 5Ah)
- Move Medium Command (A5h)
- Persistent Reserve In Command (5Eh)
- Persistent Reserve Out Command (5Fh)
- Position to Element Command (2Bh)
- Prevent/Allow Medium Removal (1Eh)
- Read Buffer Command (3Ch)
- Read Element Status Command (B8h)
- Release Element (10) Command (57h)
- Release Unit (6) Command (17h)
- Report Device Identifier Command (A3h)
- Report LUNS Command (A0h)
- Request Sense Command (03h)
- Reserve Element (10) Command (56h)
- Reserve Element (6) Command (16h)
- Send Diagnostic Command (1Dh)
- Set Device Identifier Command (A4h)
- Test Unit Ready Command (00h)
- Write Buffer Command (3Bh)
- Index
Chapter 2 Media Changer Commands
Persistent Reserve Out Command (5Fh)
Quantum SuperLoader 3 Software Interface Guide 83
02h Release A PERSISTENT RESERVE OUT command with Release service action
removes a persistent reservation held by the same initiator.
The fields associated with a
Release service action match fields of the
active persistent reservation. Sending of a
PERSISTENT RESERVE OUT
command that specifies a
Release service action when no persistent
reservation exists from that initiator does not result in an error. Instead,
the device server returns a
GOOD message without altering any other
reservation: the reservation key is not changed by the
Release service
action.
The device server returns a
CHECK CONDITION status for any
PERSISTENT RESERVE OUT command that specifies the release of a
persistent reservation held by the requesting initiator that does not match
the
Scope and Type. The sense key is set to ILLEGAL REQUEST and
additional sense data is set to
INVALID RELEASE OF ACTIVE PERSISTENT
RESERVATION
. Attempts to release persistent reservations in which none
of the
Scope, Type, Reservation Key, and extent values match an existing
persistent reservation held by the initiator making the request are not
errors.
An active persistent reservation may also be released by:
Powering off. When the most recent APTPL value received by the device
server is 0, a power-off performs a hard reset, clears all persistent
reservations, and removes all registered reservation keys; or
Executing a
PERSISTENT RESERVE OUT command from another initiator
with a persistent reserve service action of
Clear, Pre-empt, or Pre-empt and
Clear.
Note that a
Release service action should not be performed if any
operations interlocked by the persistent reservation have not yet
completed.
Powering off. When the most recent APTPL value received by the device
server is 0, a power-off performs a hard reset, clears all persistent
reservations, and removes all registered reservation keys; or
Executing a
PERSISTENT RESERVE OUT command from another initiator
with a persistent reserve service action of
Clear, Pre-empt, or Pre-empt and
Clear.
Note that a
Release service action should not be performed if any
operations interlocked by the persistent reservation have not yet
completed.
Code Name Description