Talk:UBIFS initial experiments
I have one more suggestion.
Currently, you create a JFFS2 partition containing /boot. But at the end, when the device has booted, I do not see any JFFS2 partition mounted. So it seems you use this JFFS2 partition to boot, then you do not use it.
UBIFS image contains a copy of /boot. I thing it is not a good idea to keep 2 copies. Probably it is better to have /boot on JFFS2, and remove /boot directory from UBIFS at all.
OFW will unlikely be able to mount UBIFS because it is rather complex and would need a lot of work. So probably it is OK to have 2 file-systems.