Aufs

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aufs (AnotherUnionFS in version 1, but advanced multi layered unification filesystem since version 2) implements a union mount for Linux file systems.

Developed by Junjiro Okajima in 2006,[1] aufs is a complete rewrite of the earlier UnionFS. It aimed to improve reliability and performance, but also introduced some new concepts, like writable branch balancing,[2] and other improvements - some of which are now implemented in the UnionFS 2.x branch.

Use

Several Linux distributions have chosen aufs as a replacement for UnionFS, including:

  • Knoppix live CD Linux distribution - since the end of 2006, "for better stability and performance"[3]
  • NimbleX since version 2008. Switched simultaneously with Linux-Live
  • Slax (and Linux-Live scripts in general) since version 6[4]
  • Xandros Linux distribution, available in the ASUS Eee PC model 901.
  • Arch Linux 2009.08-2011.7[5][6]
  • Ubuntu 10.04 LTS Live CD
  • Debian 6.0 Live media
  • Gentoo Linux LiveDVD 11.0[7]
  • Gentoo Linux LiveDVD 11.2[8]
  • Gentoo Linux LiveDVD 12.0[9]
  • Salix Live via Linux-Live scripts until version 13.1.1 and via SaLT from version 13.37.
  • Puppy Linux Versions can run fully in RAM with changes saved to disk on shutdown. For example Slacko 5.3.3. running as a LiveCD

Notes

  1. ↑ History of the Aufs project maintained by Junjiro Okajima
  2. ↑ Goals and new features of aufs in the project's homepage
  3. ↑ Knoppix release note explaining the switch from UnionFS to aufs.
  4. ↑ Linux Live scripts use AUFS for better stability
  5. ↑ "News: 2009.08 images". Arch Linux. 2009-08-10. Retrieved 2012-04-19. 
  6. ↑ "FS#24742 : Add aufs2 again to the repos". Bugs.archlinux.org. Retrieved 2012-04-19. 
  7. ↑ "Gentoo Linux - Gentoo Linux - LiveDVD 11.0". Gentoo.org. 2011-03-08. Retrieved 2012-04-19. 
  8. ↑ "Gentoo Linux - Gentoo Linux releases 11.2 LiveDVD". Gentoo.org. 2011-08-07. Retrieved 2012-04-19. 
  9. ↑ "Gentoo Linux - Gentoo Linux releases 12.0 LiveDVD". Gentoo.org. 2012-01-02. Retrieved 2012-04-19. 

See also

  • File system
  • Union mount, describing the concept of merging file system branches
  • UnionFS, an older union mount project, developed by Professor Erez Zadok and his team at Stony Brook University.

External links

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