research-article

Octopus⁺: An RDMA-Enabled Distributed Persistent Memory File System

Authors:

Jiwu ShuAuthors Info & Claims

ACM Transactions on Storage (TOS), Volume 17, Issue 3

Article No.: 19, Pages 1 - 25

https://doi.org/10.1145/3448418

Published: 16 August 2021 Publication History

Abstract

Non-volatile memory and remote direct memory access (RDMA) provide extremely high performance in storage and network hardware. However, existing distributed file systems strictly isolate file system and network layers, and the heavy layered software designs leave high-speed hardware under-exploited.

In this article, we propose an RDMA-enabled distributed persistent memory file system, Octopus⁺, to redesign file system internal mechanisms by closely coupling non-volatile memory and RDMA features. For data operations, Octopus⁺ directly accesses a shared persistent memory pool to reduce memory copying overhead, and actively fetches and pushes data all in clients to rebalance the load between the server and network. For metadata operations, Octopus⁺ introduces self-identified remote procedure calls for immediate notification between file systems and networking, and an efficient distributed transaction mechanism for consistency. Octopus⁺ is enabled with replication feature to provide better availability. Evaluations on Intel Optane DC Persistent Memory Modules show that Octopus⁺ achieves nearly the raw bandwidth for large I/Os and orders of magnitude better performance than existing distributed file systems.

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Li XShu RXiong YRen F(2024)Software-based Live Migration for Containerized RDMAProceedings of the 8th Asia-Pacific Workshop on Networking10.1145/3663408.3663416(52-58)Online publication date: 3-Aug-2024
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Index Terms

Octopus⁺: An RDMA-Enabled Distributed Persistent Memory File System
1. Computer systems organization
  1. Architectures
    1. Distributed architectures
      1. Client-server architectures
2. Software and its engineering
  1. Software organization and properties
    1. Contextual software domains
      1. Operating systems
        File systems management
        Memory management
        Distributed memory

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cover image ACM Transactions on Storage

ACM Transactions on Storage Volume 17, Issue 3

August 2021

227 pages

ISSN:1553-3077

EISSN:1553-3093

DOI:10.1145/3477268

Editor:
Sam H. Noh
Ulsan National Institute of Science and Technology, Ulsan, Republic of Korea

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Copyright © 2021 Association for Computing Machinery.

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Publication History

Published: 16 August 2021

Accepted: 01 January 2021

Revised: 01 November 2020

Received: 01 July 2020

Published in TOS Volume 17, Issue 3

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Sheldon JZhu WAbdullah ABhupathiraju SSugawara TButler KIslam MRampazzi S(2024)AquaSonic: Acoustic Manipulation of Underwater Data Center Operations and Resource Management2024 IEEE Symposium on Security and Privacy (SP)10.1109/SP54263.2024.00201(331-349)Online publication date: 19-May-2024
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https://doi.org/10.1109/CSNT60213.2024.10546200
Sun XShi JHan YChen Z(2024)PMEMgreSQL: Embracing PostgreSQL with Persistent MemoryWeb and Big Data10.1007/978-981-97-7244-5_39(448-458)Online publication date: 31-Aug-2024
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