This is a regression test for the issue fixed by
btrfs: init device stats for seed devices
We create a seed device, add a sprout device, and then check the device
stats after a remount to make sure it succeeds.
Reviewed-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Eryu Guan <guaneryu@gmail.com>