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C141-E124-01EN3 - 64
Table 3.2 Persistent reservations type codes
Code Name Description
0h Reserved
Reads Shared:
Any application client on any initiator may execute tasks that
request transfers from the storage medium or cache of the logical unit to the
initiator.
1h Write
Exclusive
Writes Exclusive:
Any task from any initiator other than the initiator holding the
persistent reservation that requests a transfer from the initiator to the storage
medium or cache of the logical unit shall result in a reservation conflict.
2h Reserved
Reads Shared:
Any task from any initiator other than the initiator holding the
persistent reservation that requests a transfer from the storage medium or cache of
the logical unit to the initiator shall result in a reservation conflict.
3h Exclusive
Access
Writes Exclusive:
Any task from any initiator other than the initiator holding the
persistent reservation that requests a transfer from the initiator to the storage
medium or cache of the logical unit shall result in a reservation conflict.
4h Reserved
5h Write
Exclusive-
Registrants
Only
Reads Shared:
Any application client on any initiator may execute tasks that
request transfers from the storage medium or cache of the logical unit to the
initiator.
Writes Exclusive:
A task that requests a transfer to the storage medium or cache of
the logical unit from an initiator that is not currently registered with the device
server shall result in a reservation conflict.
Reads Exclusive:
A task that requests a transfer from the storage medium or cache
of the logical unit to an initiator that is not currently registered with the device
server shall result in a reservation conflict.
6h Exclusive
Access-
Registrants
Only
Write Exclusive:
A task that requests a transfer to the storage medium or cache of
the logical unit from an initiator that is not currently registered with the device
server shall result in a reservation conflict.
7h-Fh Reserved