Table
Data Field | Description | |
| This field contains an | |
| to identify which initiator is the source of the PERSISTENT RESERVATION OUT command. | |
Reservation Key | The device server verifies that the Reservation Key in the PERSISTENT RESERVATION OUT | |
command matches the Reservation Key that is registered for the initiator from which the com- | ||
| ||
| mand is received. If there is no match, the device server returns a RESERVATION CONFLICT | |
| status. The Reservation Key of the initiator is valid for all Service action and Scope values. | |
| This field contains information needed for 3 service actions: the Register service action, the Pre- | |
| empt service action, and the | |
| is ignored for all other service actions. | |
| For the Register service action, the Service Action Reservation Key field contains the new Reser- | |
Service Action | vation Key to be registered. | |
Reservation Key | For the | |
| ||
| contains the reservation key of the persistent reservations that are being | |
| empt and the | |
| match any registered keys results in the device server returning a RESERVATION CONFLICT | |
| status. | |
| If the Scope is an Extent reservation, this field contains the Logical Block Address of the extent | |
| and the Extent Length field (bytes 22 – 23) contain the number of blocks in the extent. | |
If the Scope signifies an Element reservation, the | ||
Address | ment Address, | |
| If the Service action is Register or Clear, or if the Scope is a Logical Unit reservation, both the | |
| ||
| Activate Persist Through Power Loss. This bit is valid only for Register service actions; it is ig- | |
| nored for all other types of service actions. | |
| Support for APTPL set to 1 is optional. If a device server that does not support APTPL receives a | |
| 1 in that bit in a Register service action, it returns a CHECK CONDITION status, with the sense | |
APTPL | key set to ILLEGAL REQUEST and additional sense data set to INVALID FIELD IN PARAM- | |
ETER LIST. | ||
| If the last valid APTPL bit value received by the device server is 0, the loss of power in the target | |
| releases any persistent reservations and removes all reservation keys. If the last valid APTPL bit | |
| value is 1, the logical unit retains all persistent reservations and all reservation keys for all initia- | |
| tors even if power is lost and later returned. The most recently received valid APTPL value from | |
| any initiator governs the logical unit’s behavior in the event of a power loss. |