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Table
Table
Persistent Res- |
| READ | WRITE | READ | Exclusive |
| Shared | WRITE | Exclusive |
ervation Being |
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| Exclusive | Access | |||||
Attempted |
| Shared | Exclusive | Exclusive | Access * |
| Access * | RO | RO |
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| LU EX | LU EX | LU EX | LU EX |
| LU EX | LU EX | LU EX |
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| N N | Y Y | Y Y | Y Y |
| N N | Y Y | Y Y |
LU |
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READ Shared |
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EX |
| N N | Y O | Y O | Y O |
| N N | Y O | Y O |
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LU |
| Y Y | Y Y | Y Y | Y Y |
| Y Y | Y Y | Y Y |
WRITE |
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Exclusive |
| Y O | Y O | Y O | Y O |
| Y O | Y O | Y O |
EX |
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LU |
| Y Y | Y Y | Y Y | Y Y |
| Y Y | Y Y | Y Y |
READ |
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Exclusive |
| Y O | Y O | Y O | Y O |
| Y O | Y O | Y O |
EX |
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LU |
| Y Y | Y Y | Y Y | Y Y |
| Y Y | Y Y | Y Y |
Exclusive |
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Access * |
| Y O | Y O | Y O | Y O |
| Y O | Y O | Y O |
EX |
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LU |
| N N | Y Y | Y Y | Y Y |
| N N | Y Y | Y Y |
Shared |
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| Y O |
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Access * |
| N N | Y O | Y O | Y O |
| N N | Y O | |
EX |
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LU |
| Y Y | Y Y | Y Y | Y Y |
| Y Y | N N | N N |
WRITE |
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Exclusive |
| Y O | Y O | Y O | Y O |
| O O | N N | N N |
RO |
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EX |
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LU |
| Y Y | Y Y | Y Y | Y Y |
| Y Y | N N | N N |
Exclusive |
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Access RO |
| Y O | Y O | Y O | Y O |
| Y O | N N | N N |
EX |
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KEY: LU = Logical Unit Scope |
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| N = No Conflict |
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EX = Extent or Element Scope |
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| Y = Conflict |
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RO = Registrants Only |
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| O = Conflict occurs if extent or element overlaps | ||||||
* = Conflicts with all reservation requests from other ini- | with existing extent or element |
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tiators. |
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| reservation. |
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