Article

Samsara: honor among thieves in peer-to-peer storage

Authors:

Brian D. NobleAuthors Info & Claims

SOSP '03: Proceedings of the nineteenth ACM symposium on Operating systems principles

Pages 120 - 132

https://doi.org/10.1145/945445.945458

Published: 19 October 2003 Publication History

Abstract

Peer-to-peer storage systems assume that their users consume resources in proportion to their contribution. Unfortunately, users are unlikely to do this without some enforcement mechanism. Prior solutions to this problem require centralized infrastructure, constraints on data placement, or ongoing administrative costs. All of these run counter to the design philosophy of peer-to-peer systems.Samsara enforces fairness in peer-to-peer storage systems without requiring trusted third parties, symmetric storage relationships, monetary payment, or certified identities. Each peer that requests storage of another must agree to hold a claim in return---a placeholder that accounts for available space. After an exchange, each partner checks the other to ensure faithfulness. Samsara punishes unresponsive nodes probabilistically. Because objects are replicated, nodes with transient failures are unlikely to suffer data loss, unlike those that are dishonest or chronically unavailable. Claim storage overhead can be reduced when necessary by forwarding among chains of nodes, and eliminated when cycles are created. Forwarding chains increase the risk of exposure to failure, but such risk is modest under reasonable assumptions of utilization and simultaneous, persistent failure.

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Samsara: honor among thieves in peer-to-peer storage

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cover image ACM Conferences

SOSP '03: Proceedings of the nineteenth ACM symposium on Operating systems principles

October 2003

338 pages

ISBN:1581137575

DOI:10.1145/945445

General Chair:
Michael L. Scott
University of Rochester
,
Program Chair:
Larry Peterson
Princeton University

ACM SIGOPS Operating Systems Review Volume 37, Issue 5
SOSP '03
December 2003
329 pages
ISSN:0163-5980
DOI:10.1145/1165389
Issue’s Table of Contents

Copyright © 2003 ACM.

Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

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Published: 19 October 2003

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October 19 - 22, 2003

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SOSP '03 Paper Acceptance Rate 22 of 128 submissions, 17%;

Overall Acceptance Rate 174 of 961 submissions, 18%

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https://doi.org/10.1109/ICECA52323.2021.9676063
Cota GBen Mokhtar SGianini GDamiani ELawall JMuller GBrunie L(2017)Analysing Selfishness Flooding with SEINE2017 47th Annual IEEE/IFIP International Conference on Dependable Systems and Networks (DSN)10.1109/DSN.2017.51(603-614)Online publication date: Jun-2017
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https://doi.org/10.1002/spe.2515
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