Questions about Btrfs

[lightningfox]

Hello

How can I use Btrfs as my filesystem in Ubuntu 9.10 ?

Also, do any of you use Btrfs in a desktop Linux system and if you have how does it compare to ext4/ext3 ?

[Xbehave]

I use btrfs for my data because ext4 is a step backwards from reiser :P In terms of performance i've not really noticed much of a difference, in terms of fsck i btrfs fsck is almost instant.

I've not put anything on btrfs (or ext4) that i would care about loosing but so far i've not lost anything on either