1a - Create btrfs on /dev/sdb1 (7.63 GiB) -> 1b 2a
1b - Mount /dev/sdb1 (7.63 GiB) at / -> 1c 2c
1c - Add mount point / of /dev/sdb1 (7.63 GiB) to /etc/fstab ->

2a - Create subvolume home on /dev/sdb1 (7.63 GiB) -> 2b
2b - Set option 'no copy on write' for subvolume home on /dev/sdb1 (7.63 GiB) -> 2c
2c - Mount subvolume home on /dev/sdb1 (7.63 GiB) at /home -> 2d
2d - Add mount point /home of subvolume home on /dev/sdb1 (7.63 GiB) to /etc/fstab ->
