Next DFly release will have an initial HAMMER2 implementation
http://lists.dragonflybsd.org/pipermail/users/2017-August/313558.html [lists.dragonflybsd.org]
2017-08-21 23:27
It WILL be considered experimental and won’t be an installer option yet. This initial release will only have single-image support operational plus basic features. It will have live dedup (for cp’s), compression, fast recovery, snapshot, and boot support out of the gate.
source: Dfly