https://discussion.fedoraproject.org/t/btrfs-maintneance/21695/3

There are still lots of folks running magnetic rotational disk drives, On such systems, running btrfs, regular disk maintenance is required to avoid performance degradation and other problems. There are packages associated with btrfs to accomplish this maintenance, but they are all command line tools. I'm sure people would appreciate some help in regard to which ones to run, what parameters to use, and how to incorporate them into a script they could schedule to run periodically. I understand that btrfs is a proposal and may not be implemented, but just in case. This sort of change is the kind that could cause lots of gnashing of teeth if there isn't a nice way to handle the maintenance.