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SCSI Commands: 26BPERSISTENT RESERVE OUT
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118
3.14.1.2
PERSISTENT RESERVE OUT service action codes
Code Name
Description
GENERATION field
incremented
00h REGISTER Register a reservation key with the device
server.
Yes
01h RESERVE
Creates a persistent reservation having a
specified SCOPE and TYPE.
No
02h RELEASE
Releases the selected reservation for the
requesting initiator.
No
03h CLEAR
Clears all reservation keys and all
persistent reservations.
Yes
04 PREEMPT Preempts persistent reservations from
another initiator.
Yes
05h
PREEMPT AND
ABORT
Preempts persistent reservations from another
initiator and aborts all tasks for all initiators
registered with the specified reservation key.
Yes
06h
REGISTER AND
IGNORE
EXISTING KEY
Register a reservation key with the device
server or unregister a reservation key.
Yes
3.14.1.3
PERSISTENT RESERVE OUT parameter list
Byte
Bits
7 6 5 4 3 2 1 0
0
(MSB)
7
Reservation Key
(LSB)
8
(MSB)
15
Service Action Reservation Key
(LSB)
16
(MSB)
19
Scope-Specific Address
(LSB)
20
Reserved ATPTL
21
Reserved
22
Obsolete
23
Obsolete
Field
Bytes
Bits
Description
APTPL 20
0 If the last valid APTPL bit value received by the device server is
zero, the loss of power in the target shall release the persistent
reservation for all logical units and remove all reservation keys.
If the last valid APTPL bit value received by the device server is
one, the logical unit shall retain any persistent reservation(s)
that may be present and all reservation keys for all initiators
even if power is lost and later returned.
Obsolete
All obsolete fields must be 0.
Summary of Contents for LTO 4
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