LLFS, a copy-on-write file system for Linux

Goals: Good consistency guarantees, snapshots and cloning (writable snapshots), decent performance.

Our first effort resulted in LinLogFS, a mostly classical log-structured FS (Freenix 2000 paper, master's thesis).

Writing an efficient cleaner that could work with snapshots turned out to be hard, so we eventually gave up on the idea of using segments and a cleaner, and reverted to a free-blocks management approach, resulting in LLFS (master's thesis, poster, talk slides (in German)). Some web pages:

• Some file system ideas, mostly written down between LinLogFS and LLFS.
• Open issues in LLFS (in German).

	Name	Last modified	Size	Description
	Parent Directory		-
	offen.html	16-Jun-2008 11:23	3.4K
	poster.pdf	14-Jun-2008 15:04	1.8M
	poster.ps.gz	14-Jun-2008 15:09	1.8M
	talk.pdf	14-Jun-2008 14:59	90K