P2FS: Supporting atomic writes for reliable file system design in PCM storage

Eunji Lee, Kern Koh, Hyokyung Bahn

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

This letter analyzes the characteristics of write operations in file systems for PCM (phase-change memory), and observes that a large proportion of writes only involve a small modification of the previous version. This observation motivates a new file system for PCM called P2FS, which reduces write traffic to PCM by exploiting the similarity of data between versions, while preserving the same reliability level of existing copy-on-write file systems. Experimental results show that P2FS reduces file I/O time by 48%, and energy consumption by 65%, on average, compared to copy-on-write.

Original languageEnglish
Article number20140520
JournalIEICE Electronics Express
Volume11
Issue number13
DOIs
StatePublished - 19 Jun 2014

Keywords

  • File system
  • Non-volatile memory
  • Phase-change memory

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