Designing a true direct-access file system with DevFs

Sudarsun Kannan, Andrea C. Arpaci-Dusseau, Remzi H. Arpaci-Dusseau, Yuangang Wang, Jun Xu, Gopinath Palani

Research output: Chapter in Book/Report/Conference proceedingConference contribution

25 Scopus citations

Abstract

We present DevFS, a direct-access file system embedded completely within a storage device. DevFS provides direct, concurrent access without compromising file system integrity, crash consistency, and security. A novel reverse-caching mechanism enables the usage of host memory for inactive objects, thus reducing memory load upon the device. Evaluation of an emulated DevFS prototype shows more than 2x higher I/O throughput with direct access and up to a 5x reduction in device RAM utilization.

Original languageEnglish (US)
Title of host publicationProceedings of the 16th USENIX Conference on File and Storage Technologies, FAST 2018
PublisherUSENIX Association
Pages241-255
Number of pages15
ISBN (Electronic)9781931971423
StatePublished - Jan 1 2018
Externally publishedYes
Event16th USENIX Conference on File and Storage Technologies, FAST 2018 - Oakland, United States
Duration: Feb 12 2018Feb 15 2018

Publication series

NameProceedings of the 16th USENIX Conference on File and Storage Technologies, FAST 2018

Conference

Conference16th USENIX Conference on File and Storage Technologies, FAST 2018
Country/TerritoryUnited States
CityOakland
Period2/12/182/15/18

All Science Journal Classification (ASJC) codes

  • Software
  • Computer Networks and Communications
  • Hardware and Architecture

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