Developed by Junjiro Okajima in 2006, 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, and other improvements – some of which are now implemented in the UnionFS 2.x branch.
The name is acronym which originally stood for AnotherUnionFS, but since version 2 it stands for "advanced multi layered unification filesystem".
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"
- NimbleX since version 2008. Switched simultaneously with Linux-Live
- Porteus LiveCD, run fully in RAM
- Slax (and Linux-Live scripts in general) since version 6
- Xandros Linux distribution, available in the ASUS Eee PC model 901
- Ubuntu 10.04 LTS Live CD
- Debian 6.0 Live media
- Gentoo Linux LiveDVD 11.0
- Gentoo Linux LiveDVD 11.2
- Gentoo Linux LiveDVD 12.0
- 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.
- overlayfs, a merged successor
- File system
- Union mount, describing the concept of merging file system branches
- UnionFS, an older union mount project
- Lethe (software)
- History of the Aufs project maintained by Junjiro Okajima
- Goals and new features of aufs in the project's homepage
- Knoppix release note explaining the switch from Unionfs to aufs.
- Linux Live scripts use AUFS for better stability
- "Gentoo Linux - Gentoo Linux - LiveDVD 11.0". Gentoo.org. 2011-03-08. Retrieved 2012-04-19.
- "Gentoo Linux - Gentoo Linux releases 11.2 LiveDVD". Gentoo.org. 2011-08-07. Retrieved 2012-04-19.
- "Gentoo Linux - Gentoo Linux releases 12.0 LiveDVD". Gentoo.org. 2012-01-02. Retrieved 2012-04-19.
- "Btrfs rm issue · Issue #2961 · dotcloud/docker · GitHub". Retrieved 2014-05-04.
- RAMboot using syslinux