ULFS Project

(ULFS) User-level Log-structured File System

Home Page [click]

Sourceforge Project site [click]

1. Introduction.

• We have been developing User-level Log-structured File System using FUSE(Filesystem in userspace).
• More Flexible
• Easy Implementation
  

2. Supported Features.

• Various Segment Size (512KB~8MB)
• File Block Addressing (direct, indirect, double indrect)
• Cleaning Policy (Greedy, Cost-benefit)
  

3. Experimental Results.

• Postmark
  • Samsung SSD
    
  • • File Size : 4K ~ 256K
      

    

    • File Size : 1M ~4M
      

    

• Hitachi HDD
  
  • • File Size : 4K ~ 256K

    

    • File Size : 1M ~4M 파일 크기 : 100 ~ 4M

    

4. Source Code

Coming Soon!!!

5. Author Info

• Yongseok Oh (ysoh@uos.ac.kr)
• His Blog
  
• School of Computer scienee, University of Seoul
• Seoul, South Korea

6. References

• ULFS(User-level Log-structured File System)
  http://ulfs.sf.net

• LinLogFS
  http://www.complang.tuwien.ac.at/czezatke/lfs.html

• NILFS
  http://www.nilfs.org/

• Log-structured file system for Linux 2.6
  http://aiya.ms.mff.cuni.cz/lfs/

• Wikipedia
  http://en.wikipedia.org/wiki/Log-structured_file_system