![background image](http://html1.mh-extra.com/html/quantum/atl-superloader-atl/atl-superloader-atl_user-manual_770480124.webp)
Chapter 3 Media Changer Commands
Persistent Reserve Out Command (5Fh)
106
Quantum ATL SuperLoader Software Interface Guide
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
Summary of Contents for ATL SuperLoader ATL
Page 1: ...ATL SuperLoader DLT and ATL SuperLoader LTO Software Interface Guide 81 60220 01 A02...
Page 18: ...Preface Document Conventions xviii Quantum ATL SuperLoader Software Interface Guide...
Page 44: ...Chapter 2 Messages Supported SCSI Messages 26 Quantum ATL SuperLoader Software Interface Guide...
Page 196: ...Index 178 Quantum ATL SuperLoader Software Interface Guide...