unionfs-fuse
This is my effort to create a unionfs implementation which is probably slower but way more flexible than the current in-kernel unionfs solution.
Why choose this stuff
- The filesystem has to be mounted after the roots are mounted when using the standard module. With unionfs-fuse, you can mount the roots later and their contents will appear seamlesly
 - You get caching which speeds things up a lot for free
 - You get nice stats (optional)
 
Why NOT choose it
- Compared to kernel-space solution we need lots of useless context switches which makes kernel-only solution clear speed-winner
 
Available parameters
--roots=/root1,/root2
--stats
TODO
- Add support for creating directories
 - Add support for choice which roots are read-only and which are not
 - Add cache controls
 
attachment:unionfs.c