Bruno Wolff III wrote:
Maybe there is some fallback to a slower path when you do that. The primary method is to dd over the file system and then resize it to match the size of the partition. That won't work with BTRFS if the file system being copied is ext4.
You're not out of luck though. After the installer copies the ext4 install image, anaconda could run "btrfs-convert /dev/foo" and give you a btrfs file system. The user even has the option to roll-back to ext4 later (with the caveat of losing any btrfs changes).
Just a thought.