It is often the case that safety-critical systems have to be reconfigured during operation because of issues such as changes in the systems operating environment or the failure of software or hardware components. The reconfiguration ability of system can recover operation in timely, also enhance the survivability of system by replacing current disabled configuration with a new one. In view of the deficiencies of the current control system for survivability, an efficient reconfiguration framework for survivability is presented based on the service-level QoS. In this framework, some issues that arise in the development of such framework are discussed, and some approaches are discussed in detail. Finally, some advices for securing the framework are given.
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