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Master's Dissertation
DOI
10.11606/D.45.1994.tde-23052012-180225
Document
Author
Full name
Fabio Kon
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 1994
Supervisor
Committee
Mandel, Arnaldo (President)
Endler, Markus
Santana, Regina Helena Carlucci
Title in Portuguese
Sistemas de Arquivos Distribuídos
Keywords in Portuguese
Linux
sistemas distribuídos
sistemas operacionais
software livre
Unix
Abstract in Portuguese
Este trabalho se inicia com uma discussão sobre as principais características dos Sistemas de Arquivos Distribuídos, ou seja, espaço de nomes, localização, cache, consistência, replicação, disponibilidade, escalabilidade, heterogeneidade, tolerância a falhas e segurança. Analisamos diversos sistemas de arquivos existentes quanto a estas características dando especial atenção aos sistemas NFS, Andrew, Coda, Sprite, Zebra, Harp, Frolic e Echo. Descrevemos alguns modelos analíticos para o comportamento de sistemas de arquivos distribuídos e, em seguida, apresentamos um novo modelo para sistemas baseados em leases - um mecanismo para a garantia de consistência em sistemas distribuídos. Finalmente, descrevemos a nossa implementação do sistema de arquivos distribuído SODA - que utiliza leases - apresentando dados sobre o seu desempenho.
Title in English
Distributed File Systems
Keywords in English
distributed systems
Free Software
Linux
Open Source Software
operating systems
Unix
Abstract in English
We begin with a discussion of some of the main characteristics of Distributed File Systems, namely locality, name space, cache, consistency, replication, availability, scalability, heterogeneity, fault tolerance and security. We analyze several file systems based on these characteristics. We focus mainly on NFS, Andrew, Coda, Sprite, Zebra, Harp, Frolic, and Echo. We then describe some analytical models of the behavior of distributed file systems. After that we present a new model of systems based on leases - a mechanism to assure consistency on a distributed system. Finally we describe our implementation of the SODA distributed file system - which uses leases - presenting some results on its performance.
 
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MestradoFabioKon.pdf (986.55 Kbytes)
SODASourceCode.zip (268.33 Kbytes)
Publishing Date
2012-05-29
 
WARNING: The material described below relates to works resulting from this thesis or dissertation. The contents of these works are the author's responsibility.
  • KON, Fabio, e MANDEL, Arnaldo. SODA: A Lease-Based Consistent Distributed File System. In Simpósio Brasileiro de Redes de Computadores (SBRC) [online], 13, Belo Horizonte, 1995. Belo Horizonte : SBC, 1995. [acesso 2012-04-30]. Disponível em : <http://www.ime.usp.br/~kon/papers/sbrc95.pdf>
All rights of the thesis/dissertation are from the authors
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