“Efficient State Transfer for Hypervisor-Based Proactive Recovery”

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T. Distler, R. Kapitza, Hans P. Reiser

in Proceedings of the 2nd Workshop on Recent Advances on Intrusion-Tolerant Systems (in conjunction with Eurosys 2008, Glasgow, Scotland, April 1, 2008), Apr. 2008.

Abstract: Proactive recovery of replicated services is a novel approach that allows tolerating a potentially unlimited number of malicious faults during system lifetime by periodically restarting replicas from a correct state. Recovering a stateful replica requires a time-consuming transfer and verification of the state. During this time, the replica usually is unable to handle client requests. Our VM-FIT architecture harnesses virtualization to significantly reduce this service unavailability. Our approach allows recovery in parallel with service execution, and uses copy-on-write techniques and provides efficient state transfer support between virtual replicas on a host.

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Project(s): Project:CRUTIAL

Research line(s): Fault And Intrusion Tolerance in Open Distributed Systems (FIT)

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