Hardware fault injection with UMLinux

Buchacker, K.; Cin, Mario Dal; Hoxer, H.-J.; Sieh, Volkmar; Tschäche, Oliver; Waitz, Martin

doi:10.1109/dsn.2003.1209979

Cited by 2 publications

(2 citation statements)

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“…This includes tools for single-node systems, where the Linux kernel and applications run inside a single user-levelLinux process [2,3,18]. In [16], fault injection is performed using a software-implemented emulator of PC hardware.…”

Section: Related Workmentioning

confidence: 99%

“…The use of fault injection to test distributed systems [19,7,8,6] and leveraging virtualization for fault injection [2,3,18,16,9,12] have been presented in previous works. However, unique features of our work include: A) a comprehensive presentation of all aspects of a practical testing infrastructure, and B) ad etailed case study of the use of the infrastructure to validate a system with multiple advanced fault tolerance features.…”

Section: Introductionmentioning

confidence: 99%

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Using Virtualization to Validate Fault-Tolerant Distributed Systems

Hsu

Gallagher

et al. 2010

Informatics

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Asynchronous events and complexs ystem state distributed across independent nodes makee xposure and diagnosis of flaws in distributed systems a challenge. The difficulties are exacerbated when the goal is to validate fault tolerance mechanisms that are activated only by the occurrence of errors, which are, by nature, rare. Va lidation of fault tolerance mechanisms is often done by injecting faults that emulate the actual faults and ''stress''t he functionality of the resilience mechanisms. Va lidation campaigns lasting days and involving thousands of fault injections are often necessary.W ep resent an infrastructure that combines virtualization and software-implemented fault injection to automate validation campaigns and support the analysis of the behavior of a distributed system under test. Virtualization enables: 1) aflexible fault injector capable of emulating a wide variety of faults, and 2) am echanism for autonomously recovering faulty nodes so that the campaign can continue running on a target system that is fully functional. As ac ase study we use this infrastructure to validate a Byzantine-fault-tolerant cluster manager.O ver 1280 hours of fault injections yielded the exposure of 11 unique flaws in the cluster manager.

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