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

IEICE Electronics Express

Hyokyung Bahn¹  Eunji Lee²  Kern Koh¹ 

[1] Department of Computer Engineering, Ewha University;Department of Software, Chungbuk National University

关键词: phase-change memory;    non-volatile memory;    file system;   

DOI  :  10.1587/elex.11.20140520

学科分类：电子、光学、磁材料

来源: Denshi Jouhou Tsuushin Gakkai

【 摘 要 】

References(7)Cited-By(1)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.

【 授权许可】

Unknown