More tuning can be done. The code can be found in the dracut-install branch in https://code.launchpad.net/~ubuntu-core-dev/ubuntu/+source/initramfs-tools/+git/initramfs-tools/+ref/dracut-install
And there is initramfs-tools 0.142ubuntu8bd1 in https://launchpad.net/~bdrung/+archive/ubuntu/ppa for testing.
More tuning can be done. The code can be found in the dracut-install branch in https:/ /code.launchpad .net/~ubuntu- core-dev/ ubuntu/ +source/ initramfs- tools/+ git/initramfs- tools/+ ref/dracut- install
And there is initramfs-tools 0.142ubuntu8bd1 in https:/ /launchpad. net/~bdrung/ +archive/ ubuntu/ ppa for testing.