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Disk space guarantees as a distributed resource management problem: A case study

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4 Author(s)
M. Devarakonda ; IBM Thomas J. Watson Res. Center, Yorktown Heights, NY, USA ; A. Rao Ladi ; A. Zlotek ; A. Mohindra

In the single system UNIX, successful completion of a write system call implies a guarantee of adequate disk space for any new pages created by the system call. To support such a guarantee in a distributed file system designers need to solve the problems of accurately estimating the space needed, communication overhead, and fault tolerance. In the Calypso file system, which is a cluster-optimized, distributed UNIX file system, we solve these problems using an advance-reservation scheme. Measurements show that the overhead of this scheme for typical UNIX usage patterns is 1% to 3%

Published in:

Parallel and Distributed Processing, 1995. Proceedings. Seventh IEEE Symposium on

Date of Conference:

25-28 Oct 1995