UCL logo

UCL Discovery

UCL home » Library Services » Electronic resources » UCL Discovery

Opportunistic Use of Content-Addressable Storage for Distributed File Systems

Tolia, N; Kozuch, M; Satyanarayanan, M; Karp, B; Bressoud, T; Perrig, A; (2003) Opportunistic Use of Content-Addressable Storage for Distributed File Systems. In: (Proceedings) Conference Proceedings of the USENIX 2003 Annual Technical Conference. (pp. 127 - 140). USENIX: San Antonio, TX, USA.

Full text not available from this repository.

Abstract

May 2003. Motivated by the prospect of readily available Content Addressable Storage (CAS), we introduce the concept of file recipes. A file's recipe is a first-class file system object listing content hashes that describe the data blocks composing the file. File recipes provide applications with instructions for reconstructing the original file from available CAS data blocks. We describe one such application of recipes, the CASPER distributed file system. A CASPER client opportunistically fetches blocks from nearby CAS providers to improve its performance when the connection to a file server traverses a low-bandwidth path. We use measurements of our prototype to evaluate its performance under varying network conditions. Our results demonstrate significant improvements in execution times of applications that use a network file system. We conclude by describing fuzzy block matching, a promising technique for using approximately matching blocks on CAS providers to reconstitute the exact desired contents of a file at a client.

Type:Proceedings paper
Title:Opportunistic Use of Content-Addressable Storage for Distributed File Systems
Event:Conference Proceedings of the USENIX 2003 Annual Technical Conference
Location:San Antonio, Texas, US
Dates:2003-06-09 - 2003-06-14
Keywords:content-addressable, storage, casper, opportunistic, filesystem
UCL classification:UCL > School of BEAMS > Faculty of Engineering Science > Computer Science

Archive Staff Only: edit this record