Sorry, I accidentally sent the email ....
this is what I have done:
mount -t userlandfs -p "btrfs" /dev/disk/ata/0/slave/raw /btrfs/ -> error
mkdir ~/config/non-packaged/add-ons/userlandfs/ (and cp shared obj
btrfs to this dir)
mount -t userlandfs -p "btrfs" /dev/disk/ata/0/slave/raw /btrfs -> still error
Hy