1a - Create bcache cache set on /dev/sdc (4.00 GiB) -> 2a 2b 3a 3b

2a - Create bcache /dev/bcache0 (8.00 GiB) -> 2b 3a
2b - Attach bcache cache set on /dev/sdc to bcache /dev/bcache0 (8.00 GiB) -> 2c
2c - Create ext4 on /dev/bcache0 (8.00 GiB) ->

3a - Create bcache /dev/bcache1 (8.00 GiB) -> 3b
3b - Attach bcache cache set on /dev/sdc to bcache /dev/bcache1 (8.00 GiB) -> 3c
3c - Create xfs on /dev/bcache1 (8.00 GiB) ->
