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US 7,117,397 B1Granted
Apparatus and method for preventing an erroneous operation at the time of detection of a system failure
AssigneeFujitsu Limited
InventorsHiroshi Kondo, Keizo Azuma
Life of this patent
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Abstract
If a failure is detected in a system, it is automatically judged which operation mode should be selected, a system-down mode or a dynamic degeneracy mode. If a failed device is severed from the system, the severance of the device is reported by making a device control unit access the device or changing the state of the device.
Claims16
A notification apparatus, comprising:
- means for determining a failure has occurred in a device and a use of the failed device is prohibited, the determination of the failure being made independent of a device control unit that performs control over the failed device;
- a notification device for instructing the device control unit that performs control over the failed device to access the failed device when the means for determining determines that the failure has occurred in the failed device;
- wherein the device control unit recognizes the prohibition of use of the failed device if the device control unit is unable to access the failed device.
A computer-readable storage medium on which a program is recorded, said program comprising:
- determining a failure has occurred in a device and a use of the failed device is prohibited, the determination of the failure being made independent of a device control unit that performs control over the failed device;
- enabling a computer to instruct the device control unit that performs control over the failed device to access the failed device when the determination is made that the failure has occurred in the failed device,
- wherein the device control unit recognizes the prohibition of use of the failed device if the device control unit is unable to access the failed device.
A notification method, comprising:
- determining a failure has occurred in a device and a use of the failed device is prohibited, the determination of the failure being made independent of a device control unit that performs control over the failed device;
- prohibiting use of the failed device;
- and
- instructing the device control unit that performs control over the failed device to access the failed device when the determination is made that the failure has occurred in the failed device,
- the device control unit recognizing the prohibition of use of the failed device if the device control unit is unable to access the failed device.
2 more elements
A notification apparatus, comprising:
- means for determining a failure has occurred in a device and a use of the failed device is prohibited, the determination of the failure being made independent of a device control unit that performs control over the failed device;
- prohibition means for prohibiting use of the failed device;
- and
- notification means for instructing the device control unit that performs control over the failed device to access the failed device when said means for determining determines that the failure has occurred in the failed device;
- wherein the device control unit recognizes the prohibition of use of the failed device if the device control unit is unable to access the failed device.
2 more elements
Dependencies are inferred from the claim text.