Aufs

From Wikipedia, the free encyclopedia

This article or section needs sources or references that appear in reliable, third-party publications.
Primary sources and sources affiliated with the subject of the article are generally not sufficient for a Wikipedia article. Please include more appropriate citations from reliable sources, or discuss the issue on the talk page.
This article has been tagged since May 2008.

This article needs additional citations for verification.
Please help improve this article by adding reliable references. Unsourced material may be challenged and removed. (May 2008)

This article may not meet the notability guidelines for products and services. If you are familiar with the subject matter, please expand or rewrite the article to establish its notability. The best way to address this concern is to reference published, third-party sources about the subject. If notability cannot be established, the article is more likely to be considered for redirection, merge or ultimately deletion, per Wikipedia:Guide to deletion.
This article has been tagged since May 2008.

aufs is an alternative version of unionfs a filesystem service which implements a union mount for Linux file systems. It is developed by Junjiro Okajima since early 2006.

It is a complete rewriting of unionfs, mainly to improve reliability and performance. It has also introduced some new concepts, like writable branch balancing, and many little improvement. Some of these new ideas are now re-implemented in the unionfs 2.x branch.

Another big difference is that part of unionfs 1.x is currently merged in the linux kernel (and 2.x in the --mm experimental tree) whereas aufs is not. This is because the author considers that aufs is still in the development stage.

Aufs has been chosen for replacement of unionfs by the Knoppix live CD Linux distribution since the end of 2006, "for better stability & performance"^[1]

[edit] Notes

^ Knoppix release note explaining the switch from unionfs to aufs

[edit] See also

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