Editing /usr/share/initramfs-tools/scripts/local-premount/btrfs to remove the scan speeds up boots for me on 4.0.0-4-generic wily. That'll stop you from being able to mount a multi-device filesystem as root, which I do not need.
Editing /usr/share/ initramfs- tools/scripts/ local-premount/ btrfs to remove the scan speeds up boots for me on 4.0.0-4-generic wily. That'll stop you from being able to mount a multi-device filesystem as root, which I do not need.