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Dependable, Autonomic and Secure Computing, IEEE International Symposium on (2007)
Columbia, Maryland
Sept. 25, 2007 to Sept. 26, 2007
ISBN: 0-7695-2985-2
pp: 3-10
Francis M. David , University of Illinois at Urbana-Champaign, USA
Roy H. Campbell , University of Illinois at Urbana-Champaign, USA
User applications and data in volatile memory are usu- ally lost when an operating system crashes because of er- rors caused by either hardware or software faults. This is because most operating systems are designed to stop working when some internal errors are detected despite the possibility that user data and applications might still be intact and recoverable. Techniques like exception han- dling, code reloading, operating system component isola- tion, micro-rebooting, automatic system service restarts, watchdog timer based recovery and transactional compo- nents can be applied to attempt self-healing of an operating system from a wide variety of errors. Fault injection exper- iments show that these techniques can be used to continue running user applications after transparently recovering the operating system in a large percentage of cases. In cases where transparent recovery is not possible, individual pro- cess recovery can be attempted as a last resort.

R. H. Campbell and F. M. David, "Building a Self-Healing Operating System," 2007 IEEE International Symposium on Dependable, Autonomic and Secure Computing(DASC), Columbia, MD, 2007, pp. 3-10.
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