1a - Grow partition /dev/sda2 from 20.00 GiB to 30.00 GiB -> 1b
1b - Grow /dev/sda2 of btrfs on /dev/sda1 (10.00 GiB) and /dev/sda2 (20.00 GiB) from 20.00 GiB to 30.00 GiB ->
