If the scope is an Element reservation, the "Scope-specific Address" field shall contain the Element address, zero filled in the most significant bytes to fit the field. If the service action is REGISTER, REGISTER AND IGNORE EXISTING KEY, or CLEAR or if the scope is a Logical Unit reservation, the "Scope-specific Address" field shall be set to zero.

The "Activate Persist Through Power Loss (APTPL)" bit shall be valid only for the REGISTER, or the REGISTER AND IGNORE EXISTING KEY service action. In all other cases, the "APTPL" bit shall be ignored. Support for an "APTPL" bit equal to one is optional. If a device server that does not support the "APTPL" bit value of one receives that value in a REGISTER or a REGISTER AND IGNORE EXISTING KEY service action, the device server shall return a CHECK CONDITION status (ILLEGAL REQUEST [=5] / Invalid field in parameter list [=26- 00]).

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

Table 3.4 summarizes which fields are set by the application client and interpreted by the device server for each service action and scope value. The "APTPL" bit PERSISTENT RESERVE OUT parameter is not summarized in table 3.4, since it is specified above.

Table 3.4 PERSISTENT RESERVE OUT service action and valid parameters

 

 

 

 

Parameters

 

 

 

 

 

 

 

Service Action

Allowed Scope

type

Reservation

Reservation

Service Action

 

 

 

Key

Key

Scope-Specific

 

 

 

 

 

Address

 

 

 

 

 

 

Register

ignored

ignored

valid

valid

ignored

 

 

 

 

 

 

Register And

ignored

ignored

ignored

valid

ignored

Ignore Existing

 

 

 

 

 

Key

 

 

 

 

 

 

 

 

 

 

 

Reserve

Logical Unit

valid

valid

ignored

ignored

 

Element

valid

 

ignored

valid(Element)

 

 

 

 

 

 

Release

Logical Unit

valid

valid

ignored

ignored

 

Element

valid

 

ignored

valid (Element)

 

 

 

 

 

 

Clear

ignored

ignored

valid

ignored

ignored

 

 

 

 

 

 

Preempt

Logical Unit

valid

valid

valid

ignored

 

Element

valid

 

valid

valid (Element)

 

 

 

 

 

 

Preempt &

Logical Unit

valid

valid

valid

ignored

Abort

Element

valid

 

valid

valid (Element)

 

 

 

 

 

 

3 - 68

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Fujitsu MAN3735, MAN3367, MAN3184 specifications Persistent Reserve OUT service action and valid parameters

MAN3735, MAN3184, MAN3367, MAN3735 SERIES DISK DRIVES, MAN3367, MAN3184 specifications

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