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Chapter 3 Media Changer Commands
Persistent Reserve In Command (5Eh)
Quantum ATL SuperLoader Software Interface Guide
99
Table 44 Persistent
Reservation Type
Codes
Code
Name
Description
0h
Obsolete
1h
WRITE
Exclusive
READS: Shared; any application client on any initiator may execute
commands that perform transfers from the target to the initiator.
WRITES: Exclusive; any command from any initiator other than the
initiator that holds the persistent reservation that attempts a transfer
to the target results in a reservation conflict
ADDITIONAL RESERVATIONS: Allowed; any initiator may
reserve the logical unit, extents, or elements as long as the persistent
reservations do not conflict with any reservations already known to
the device server.
2h
Obsolete
3h
Exclusive
Access
READS: Exclusive; any command from any initiator other than the
initiator holding the persistent reservation that attempts a transfer
from the target results in a reservation conflict.
WRITES: Exclusive; any command from any initiator other than the
initiator holding the persistent reservation that attempts a transfer
to the target results in a reservation conflict.
ADDITIONAL RESERVATIONS: Restricted; any PERSISTENT
RESERVE OUT command with the Reserve service action from any
initiator other than the initiator holding the persistent reservation
results in a reservation conflict. The initiator that holds the
persistent reservation can reserve the logical unit, extents, or
elements as long as the persistent reservations do not conflict with
any reservations already known to the device server.
4h
Obsolete
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...