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Replication in Ficus Distributed File Systems

Gerald J. Popek, Richard G. Guy, Thomas W. Page, Jr., and John S. Heidemann
University of California, Los Angeles

Abstract

Ficus is a replicated general filing environment for Unix intended to scale to very large (nationwide) networks. The system employs an optimistic ``one copy availability'' model in which conflicting updates to the file system's directory information are automatically reconciled, while conflicting file updates are reliably detected and reported. The system architecture is based on a stackable layers methodology which permits a high degree of modularity and extensibility of file system services. % This paper presents the motivations for replication and summarizes the case for optimistic concurrency control for large scale distributed file systems. It presents a brief description of the Ficus file system and concludes with a number of outstanding issues which must be addressed.

Availability

This paper is available in several formats: abstract web page with pointers and cites, gzip'ed postscript, PDF, paper copies can be obtained by mail to the authors. Copyright terms for this paper appear below.

Reference

Popek90a: Gerald J. Popek, Richard G. Guy, Thomas W. Page, Jr., and John S. Heidemann. Replication in Ficus Distributed File Systems. In Proceedings of the Workshop on Management of Replicated Data, pp. 20-25. University of California, Los Angeles, IEEE. November, 1990. <http://www.isi.edu/~johnh/PAPERS/Popek90a.html>.

@inproceedings{Popek90a,
	author = "Gerald J. Popek and Richard G. Guy
			and Page, Jr., Thomas W. and John S. Heidemann",
	title = "Replication in {Ficus} Distributed File Systems",
	booktitle = "Proceedings of the  Workshop on Management of Replicated Data",
	publisher = "{IEEE}",
	month = "November",
	year = "1990",
	pages = "20--25",
	url = "http://www.isi.edu/~johnh/PAPERS/Popek90a.html",
	psurl = "http://www.isi.edu/~johnh/PAPERS/Popek90a.ps.gz",
	pdfurl = "http://www.isi.edu/~johnh/PAPERS/Popek90a.pdf",
	oldurl = "ftp://ftp.cs.ucla.edu/pub/ficus/WorkMgtReplData_90.ps.gz",
	organization = "University of California, Los Angeles",
	copyrightholder = "{IEEE}",
}

Copyright

This paper is copyright © 1990 by IEEE. Abstracting is permitted with credit to the source. Libraries are permitted to photocopy beyond the limit of US copyright law, for private use of patrons, those articles in this volume that carry a code at the bottom of the first page, provided that the per-copy fee indicated in the code is paid through the Copyright Clearance Center, 27 Congress Street, Salem, MA 01970. For other copying, reprint, or republication permission, write to IEEE Copyrights Manager, IEEE Service Center, 445 Hoes Lane, PO Box 1331, Piscataway, NJ 08855-1331.