Title :
An algorithm for tolerating crash failures in distributed systems
Author :
De Florio, Vincenzo ; Deconinck, Geert ; Lauwereins, Rudy
Author_Institution :
Dept. of Electr. Eng., Katholieke Univ., Leuven, Heverlee, Belgium
Abstract :
In the framework of the ESPRIT project 28620 “TIRAN” (tailorable fault tolerance frameworks for embedded applications), a toolset of error detection, isolation, and recovery components is being designed to serve as a basic means for orchestrating application-level fault tolerance. These tools will be used either as stand-alone components or as the peripheral components of a distributed application, that we call “the backbone”. The backbone is to run in the background of the user application. Its objectives include (1) gathering and maintaining error detection information produced by TIRAN components like watchdog timers, trap handlers, or by external detection services working at kernel or driver level, and (2) using this information at error recovery time. In particular those TIRAN tools related to error detection and fault masking will forward their deductions to the backbone that, in turn, will make use of this information to orchestrate error recovery, requesting recovery and reconfiguration actions to those tools related to error isolation and recovery. Clearly a key point in this approach is guaranteeing that the backbone itself tolerates internal and external faults. In this article we describe one of the means that are used within the TIRAN backbone to fulfill this goal: a distributed algorithm for tolerating crash failures triggered by faults affecting at most all but one of the components of the backbone or at most all but one of the nodes of the system. We call this the algorithm of mutual suspicion
Keywords :
distributed algorithms; fault tolerant computing; research initiatives; system recovery; TIRAN; crash failures; distributed systems; error detection; fault masking; fault tolerance; mutual suspicion; tailorable fault tolerance; toolset; Application software; Computer crashes; Ear; Electrical capacitance tomography; Fault detection; Fault tolerance; Identity-based encryption; Software tools; Spine; Tail;
Conference_Titel :
Engineering of Computer Based Systems, 2000. (ECBS 2000) Proceedings. Seventh IEEE International Conference and Workshopon the
Conference_Location :
Edinburgh
Print_ISBN :
0-7695-0604-6
DOI :
10.1109/ECBS.2000.839856