3.1.18.3.1 Persistent reservations scope

The value in the "Scope" field shall indicate whether a persistent reservation applies to an entire logical unit or to an element. The values in the "Scope" field are defined below.

Code

 

Name

Description

 

 

 

 

0h

 

Logical Unit

Persistent reservation applies to the full logical unit

1h

 

Reserved

Reserved

2h

 

Element

Persistent reservation applies to the specified element

3h-Fh

 

Reserved

Reserved

 

 

 

 

3.1.18.3.1.1

Logical unit scope

A "Scope" field value of LU shall indicate that the persistent reservation applies to the entire logical unit. The Logical Unit scope shall be implemented by all device servers that implement

PERSISTENT RESERVE OUT.

3.1.18.3.1.2 Element scope (not supported)

A "Scope" field value of Element shall indicate that the persistent reservation applies to the element of the logical unit defined by the "Scope-specific Address" field in the PERSISTENT RESERVE OUT parameter list. An element is defined by the SCSI-3 Medium Changer Commands (SMC) standard. The Element scope is optional for all device servers that implement

PERSISTENT RESERVE OUT.

3.1.18.3.2 Persistent reservations type

The value in the "Type" field shall specify the characteristics of the persistent reservation being established for all data blocks within the element or within the logical unit. Table 3.2 defines the characteristics of the different type values. For each persistent reservation type, table 3.2 lists code value and describes the required device server support. In table 3.2, the description of required device server support is divided into two paragraphs. The first paragraph defines the required handling for read operations. The second paragraph defines the required handling for write operations.

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Fujitsu MAN3367 Persistent reservations scope, Logical unit scope, Persistent Reserve OUT, Element scope not supported
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MAN3735, MAN3184, MAN3367, MAN3735 SERIES DISK DRIVES, MAN3367, MAN3184 specifications

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