anyone got lucid 10.04.1 with btrfs running on their xM?

i'm following along here:

and decided to try setting up my SD card with btrfs, but got this
early in the boot process:

Could not open -a
mountall: fsck / [260] terminated with status 1
mount: / not mounted already, or bad option
mountall: mount / [266] terminated with status 32
mountall: Filesystem could not be mounted: /

  anyone out there managed to boot with a btrfs root filesystem?


p.s. my full progress report to follow shortly. an ext4 rootfs
appears to work fine.