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Efficient and Modular Consensus-Free Reconfiguration for Fault-Tolerant Storage

Authors: Eduardo Alchieri, Alysson Bessani, Fabíola Greve, and Joni da Silva Fraga

Published in: LIPIcs, Volume 95, 21st International Conference on Principles of Distributed Systems (OPODIS 2017)


Abstract
Quorum systems are useful tools for implementing consistent and available storage in the presence of failures. These systems usually comprise of a static set of servers that provide a fault-tolerant read/write register accessed by a set of clients. We consider a dynamic variant of these systems and propose FreeStore, a set of fault-tolerant protocols that emulates a register in dynamic asynchronous systems in which processes are able to join/leave the set of servers during the execution. These protocols use a new abstraction called view generators, that captures the agreement requirements of reconfiguration and can be implemented in different system models with different properties. Particularly interesting, we present a reconfiguration protocol that is modular, efficient, consensus-free and loosely coupled with read/write protocols. An analysis and an experimental evaluation show that the proposed protocols improve the overall system performance when compared with previous solutions.

Cite as

Eduardo Alchieri, Alysson Bessani, Fabíola Greve, and Joni da Silva Fraga. Efficient and Modular Consensus-Free Reconfiguration for Fault-Tolerant Storage. In 21st International Conference on Principles of Distributed Systems (OPODIS 2017). Leibniz International Proceedings in Informatics (LIPIcs), Volume 95, pp. 26:1-26:17, Schloss Dagstuhl - Leibniz-Zentrum für Informatik (2018)


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@InProceedings{alchieri_et_al:LIPIcs.OPODIS.2017.26,
  author =	{Alchieri, Eduardo and Bessani, Alysson and Greve, Fab{\'\i}ola and Fraga, Joni da Silva},
  title =	{{Efficient and Modular Consensus-Free Reconfiguration for Fault-Tolerant Storage}},
  booktitle =	{21st International Conference on Principles of Distributed Systems (OPODIS 2017)},
  pages =	{26:1--26:17},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-061-3},
  ISSN =	{1868-8969},
  year =	{2018},
  volume =	{95},
  editor =	{Aspnes, James and Bessani, Alysson and Felber, Pascal and Leit\~{a}o, Jo\~{a}o},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.OPODIS.2017.26},
  URN =		{urn:nbn:de:0030-drops-86411},
  doi =		{10.4230/LIPIcs.OPODIS.2017.26},
  annote =	{Keywords: Distributed Systems, Reconfiguration, Fault-Tolerant Quorum Systems}
}
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