PERSISTENT RESERVE IN | 6.Command Specification |
SCOPE: The value in this field indicates whether a persistent reservation applies to an entire logical unit to an element. The value in this filed are defined in Table
Table 6-60: PERSISTENT RESERVATION SCOPE Codes
Code | Name | Description |
0h | Logical unit | Persistent reservation applies to the full logical unit |
1h | Obsolete | Obsolete |
2h | Element (not supported in this drive) | Persistent reservation applies to the specified element |
Reserved | Reserved |
Logical unit: A SCOPE value of logical unit indicates that the persistent reservation applies to the entire logical unit. The logical unit scope will be implemented by all targets that implement PERSISTENT RESERVE OUT.
Element: A SCOPE filed value of Element indicates that the persistent reservation applies to the element of the logical unit defined by the
The drive do not support it.
TYPE: The value in the TYPE filed specify the characteristics of the persistent reservation being established for all data blocks within the element or within the logical unit. Table
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Code | Name |
| Description |
0h |
|
| Obsolete |
1h | Write |
| Reads Shared: Any application client on any initiator may execute tasks that |
| Exclusive |
| request transfers from the storage medium or cache of the logical unit to the |
|
|
| initiator. |
|
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| 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 will result in a reservation conflict. |
2h |
|
| Obsolete |
3h | Exclusive |
| Reads Exclusive: Any task from any initiator other than the initiator holding the |
| Access |
| persistent reservation that requests a transfer from the storage medium or cache of |
|
|
| the logical unit will result in a reservation conflict. |
|
|
| Write 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 will result in a reservation conflict. |
4h |
|
| Obsolete |
5h | Write |
| Reads Shared: Any application client on any initiator may execute tasks that |
| Exclusive- |
| request transfers from the storage medium or cache of the logical unit to the |
| Registrants |
| initiator. |
| Only |
| 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 will result in a reservation conflict. |
6h | Exclusive |
| Reads Exclusive: A task that requests a transfer from the storage medium or |
| Access- |
| cache of the logical unit to an initiator that has not previously requested a |
| Registrants |
| REGISTER service action with the drive will result in a reservation conflict. |
| Only (not |
| Write Exclusive: Any task from any initiator other than the initiator holding the |
| supported in |
| persistent reservation that requests a transfer from the initiator to the storage |
| this drive) |
| medium or cache of the logical unit will result in a reservation conflict. |
Reserved |
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SONY |