Persistent context-based behavior injection or testing of a...

Details Persistent context-based behavior injection or testing of a... Persistent context-based behavior injection or testing of a...

2008-05-19

2010-11-09

Baderman, Scott T (Department: 2114)

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

C714S027000, C714S032000, C714S034000

Reexamination Certificate

active

07831864

ABSTRACT:
The invention provides a method and system for persistent context-based behavior injection in a computing system, such as in a redundant storage system or another system having a layered or modular architecture. Behaviors that are injected can be specified to have triggering conditions, such that the behavior is not injected unless the conditions are true. Triggering conditions may include a selected ordering of conditions and a selected context for each behavior. In a system having a layered architecture, behavior injection might be used to evaluate correct responses in the face of cascaded errors in a specific context or thread, other errors that are related by context, concurrent errors, or multiple errors. Behavior injection uses non-volatile memory to preserve persistence of filter context information across possible system errors, for reporting of the results of behavior injection, and to preserve information across recovery from system errors. Multiple behavior injection threads are also provided. Behavior injection can also be performed in a logically distributed system or from a logically remote system.

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