Table 5-118 Persistent Reservation Out Parameter List-Data Format - Maxtor ATLAS 10K IV User Manual

SCSI Description
Code Name
4h Shared Access
WRITE
Exclusive,
5h
Registrants Only
Exclusive
6h
Registrants Only
7h - Fh Reserved
The PERSISTENT RESERVATION OUT command requires a parameter list,
illustrated in Table 5-118 and defined in Table 5-119. Each of the fields of the
parameter list are sent for every PERSISTENT RESERVATION OUT command,
even if the field is not required for the specific Service action and/or Scope values
PERSISTENT RESERVATION OUT Parameter List-Data Format
Table 5-118
Bit
Byte
(MSB)
0 – 7
(MSB)
8 – 15
(MSB)
16 – 19
20
21
(MSB)
22 – 23
5-86 Maxtor Atlas 10K IV
READS: Shared; any application client on any initiator may execute commands that
perform transfers from the disk to the initiator.
WRITES: Shared; any application client on any initiator may execute commands that
perform transfers to the disk from the initiator.
ADDITIONAL RESERVATIONS: Restricted; any PERSISTENT RESERVATION
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.
READS: Shared; any application client on any initiator may execute commands that
perform transfers from the disk to the initiator.
WRITES: Exclusive; any command from an initiator that has not previously performed
a Register service action with the device server that attempts a transfer to the disk results
in a reservation conflict
ADDITIONAL RESERVATIONS: Allowed; any initiator may reserve the logical unit,
extents, or elements as long as the persistent reservations to not conflict with any reser-
vations already known to the device server.
READS: Exclusive; any command from an initiator that has not previously performed
a Register service action with the device server that attempts a transfer from the disk re-
sults in a reservation conflict.
WRITES: Exclusive; any command from an initiator that has not previously performed
a Register service action with the device server that attempts a transfer to the disk results
in a reservation conflict
ADDITIONAL RESERVATIONS: Allowed; any initiator may reserve the
logical unit, extents, or elements as long as the persistent reservations
to not conflict with any reservations already known to the device
server.
N/A
7 6 5
Service Action Reservation Key
Description
4 3
Reservation Key
Scope-Specific Address
Reserved
Reserved
Extent Length
2 1 0
(LSB)
(LSB)
(LSB)
APTPL
(LSB)