Persistent Reserve OUT 5F | Fujitsu MAN3184, MAN3367, MAN3735

3.1.19PERSISTENT RESERVE OUT (5F)

Bit	7	6		5		4		3	2	1	0
Byte

0							X'5F'

1	0	0	0					Service Action

2			Scope						Type

3	0	0	0		0		0		0	0	0

4	0	0	0		0		0		0	0	0

5	0	0	0		0		0		0	0	0

6	0	0	0		0		0		0	0	0

7					Parameter List Length (MSB)

8					Parameter List Length (LSB)

9	0	0		0	0		0		0	Flag	Link

This command is used to request service actions that reserve a logical unit or element for the exclusive or shared use of a particular initiator. The command uses other service actions to manage and remove such reservations. The command shall be used in conjunction with the PERSISTENT RESERVE IN command and shall not be used with the RESERVE and RELEASE commands.

Initiators performing PERSISTENT RESERVE OUT service actions are identified by a reservation key provided by the application client. An application client may use the PERSISTENT RESERVE IN command to identify which initiators are holding a persistent reservation and use the PERSISTENT RESERVE OUT command to preempt that reservation if required.

If a PERSISTENT RESERVE OUT command is attempted, but there are insufficient device server resources to complete the operation, the device server shall return a CHECK CONDITION status (ILLEGAL REQUEST [=5] / Insufficient registration resources [=55-04]).

The PERSISTENT RESERVE OUT command contains fields that specify a persistent reservation service action, the intended scope of the persistent reservation, and the restrictions caused by the persistent reservation. The "Type" and "Scope" fields are defined in 3.1.18.3.1 and 3.1.18.3.2. If a "Scope" field specifies a scope that is not implemented, the device server shall return a CHECK CONDITION status (ILLEGAL REQUEST [=5] / Invalid field in CDB).

Fields contained in the PERSISTENT RESERVE OUT parameter list specify the information required to perform a particular persistent reservation Service action.

The parameter list shall be 24 bytes in length and the "Parameter List Length" field shall contain 24 (18h). If the parameter list length is not 24, the device server shall return a CHECK CONDITION status (ILLEGAL REQUEST [=5] / Parameter list length error [=1A-00]).

C141-E124-01EN

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Fujitsu MAN3184, MAN3367, MAN3735 specifications Persistent Reserve OUT 5F

Models: MAN3735 MAN3184, MAN3367, MAN3735 SERIES DISK DRIVES MAN3367 MAN3184

3.1.19PERSISTENT RESERVE OUT (5F)

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