I'm not involved with the fs, I just used it for a few weeks, after that, It started to hit some bugs in the code (kernel BUG macro, looked quite serious). And fsck was segfaulting. It was just my laptop, nothing fancy, I was using just compression, no subvolumes or anything more complicated. I'm not convinced it's stable enough for any serious use, unfortunately. (mostly 2.6.34 version)
