Abstract. This tool presentation describes UMLinux, a versatile framework for testing the behavior of networked machines running the Linux operating system in the presence of faults. UMLinux can inject a variety of faults into the hardware of simulated machines, such as faults in the computing core or peripheral devices of a machine or faults in the network connecting the machines. The system under test, which may include several machines, as well as the fault-and workload run on this system are configurable. UMLinux has a number of advantages over traditional SWIFI and simulation tools: speed, immunity of fault-injection and logging processes from the state of the machine into which the faults are injected and binary compatibility with real world data and programs.
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