Looked at versioning file systems? (http://en.wikipedia.org/wiki/Versioning_file_system#Linux http://en.wikipedia.org/wiki/Versioning_file_system#Linux). They'

Looked at versioning file systems? (http://en.wikipedia.org/wiki/Versioning_file_system#Linux http://en.wikipedia.org/wiki/Versioning_file_system#Linux). They've been around for awhile. Can't say why we don't have any mainstream system-level filesystem yet, though. You may also want to check out FUSE (http://en.wikipedia.org/wiki/Filesystem_in_Userspace http://en.wikipedia.org/wiki/Filesystem_in_Userspace). Something on top of git may already exist. If not, it wouldn't be too difficult to create something like that.