Persistent Reservation Out Command-Field Descriptions - Maxtor ATLAS 10K III Product Manual

T a b l e 5 - 1 1 9 PERSISTENT RESERVATION OUT Command-Field Descriptions
& C V C ( K G N F
Service actions that require information about persistent reservation and registrations
Service Ac-
may require enabling of nonvolatile memory within the logical unit.
tion
Service action codes available are:
00h
01h
02h
03h
04h
05h
06 – 1Fh
Refer to Table 5-120 for detailed descriptions of each of the service action codes.
The value in this field indicates whether a persistent reservation applies to an entire
logical unit, to a part of the logical unit (defined as an extent), or to an element.
Scope
The values for the Scope field are:
C o d e
0h
1h
2h
3h – Fh
& G U E T K R V K Q P
Regis-
Register a reservation key with the device server
ter
Re-
Create a persistent reservation using a reservation key
serve
Re-
Release a persistent reservation
lease
Clear all reservation keys and all persistent reserva-
Clear
Pre-
Pre-empt persistent reservations from another initiator
empt
Pre-
Pre-empt persistent reservations from another initiator
empt &
and clear the task set for the pre-empted initiator
Clear
Re-
served
N a m e
Logical Unit. Persistent reservation applies to the full
logical unit. The LU scope is therefore implemented by
LU
all device servers that implement PERSISTENT RESER-
VATION OUT.
Persistent reservation applies to the specified extent.
When Extent is the scope, it indicates that the persis-
tent reservation applies to the extent of the logical unit
defined by the Scope-Specific Address and Extent
Extent Length fields in the PERSISTENT RESERVATION OUT
command's parameter list. Note that an extent is de-
fined only for devices defining contiguous logical block
addresses. The Extent scope is optional for all device
servers that implement PERSISTENT RESERVATION
OUT.
Persistent reservation applies to the specified element.
When Element is the scope, it indicates that the persis-
tent reservation applies to the element of the logical
Ele- unit defined by the Scope-Specific Address field in the
ment PERSISTENT RESERVATION OUT parameter list. An
element is as defined by the SCSI-3 Medium Changer
Commands (SMC) standard. The Element scope is op-
tional for all device servers that implement PERSIS-
TENT RESERVATION OUT.
Re-
Reserved
served
SCSI Description
tions
Reserved
D e s c r i p t i o n
Maxtor Atlas 10K III 5-97