Abstract
Modern cluster file systems such as PVFS that stripe files across multiple nodes have shown to provide high aggregate I/O bandwidth but are prone to data loss since the failure of a single disk or server affects the whole file system. To address this problem a number of distributed data redundancy schemes have been proposed that represent different trade-offs between performance, storage efficiency and level of fault tolerance. However the actual level of dependability of an enhanced striped file system is determined by more than just the redundancy scheme adopted, depending in general on other factors such as the type of fault detection mechanism, the nature and the speed of the recovery. In this paper we address the question of how to assess the dependability of CSAR, a version of PVFS augmented with a RAID5 distributed redundancy scheme we described in a previous work.
This work has been partially supported by the Consorzio Interuniversitario Nazionale per l’Informatica (CINI), by the Italian Ministry for Education, University, and Research (MIUR) in the framework of the FIRB Project ”Middleware for advanced services over large-scale, wired-wireless distributed systems (WEB-MINDS)”, by the National Partnership for Advanced Computational Infrastructure, by the Ohio Supercomputer Center through grants PAS0036 and PAS0121, and by NSF grant CNS-0403342. M.L. is partially supported by NSF DBI-0317335. Support from Hewlett-Packard is also gratefully acknowledged.
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Cotroneo, D., Paolillo, G., Russo, S., Lauria, M. (2005). CSAR-2: A Case Study of Parallel File System Dependability Analysis. In: Yang, L.T., Rana, O.F., Di Martino, B., Dongarra, J. (eds) High Performance Computing and Communications. HPCC 2005. Lecture Notes in Computer Science, vol 3726. Springer, Berlin, Heidelberg. https://doi.org/10.1007/11557654_23
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DOI: https://doi.org/10.1007/11557654_23
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