I'm trying to convert a 2 drive btrfs array on Ubuntu 12.04 to use RAID1. Following the instructions on the btrfs wiki I've tried this command, with no success:
valorin@gimli:~$ sudo btrfs filesystem balance start -dconvert=raid1 -mconvert=raid1 / ERROR: 'filesystem balance' requires 1 arg(s)
I've checked for documentation, but I can't seem to find any documentation for this command.
Any ideas what I'm doing wrong?