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2010

State Transfer for Hypervisor-Based Proactive Recovery of Heterogeneous Replicated Services

10 years 11 months ago
State Transfer for Hypervisor-Based Proactive Recovery of Heterogeneous Replicated Services
Intrusion-tolerant replication enables the construction of systems that tolerate a finite number of malicious faults. An arbitrary number of faults can be tolerated during system lifetime if faults are eliminated periodically by proactive recovery. The periodic rejuvenation of stateful replicas requires the transfer and validation of the replica state. This paper presents two novel efficient state transfer protocols for a hypervisor-based replication architecture that supports proactive recovery. Our approach handles heterogeneous replicas, and allows changing/updating the replica implementation on each recovery. We harness virtualization for an efficient state transfer between "old" and "new" replicas in virtual machines on the same physical host, and use copy-on-write disk snapshots for low-intrusive recovery of replicas in parallel with service execution. We apply the generic algorithm to a realistic three-tier application (RUBiS) and study the impact of recover...
Tobias Distler, Rüdiger Kapitza, Hans P. Reis
Added 15 Feb 2011
Updated 15 Feb 2011
Type Journal
Year 2010
Where SICHERHEIT
Authors Tobias Distler, Rüdiger Kapitza, Hans P. Reiser
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