We don't use FDB in production yet, but Wavefront is using FDB and it seems they're quite happy: https://news.ycombinator.com/item?id=16879632

My next step is to implement a locking mechanism to prohibit simultaneous mounts and data corruption, and then I'll work on providing a Container Storage Interface to support easy integration with k8s.

I don't think there will be major deviations from the roadmap defined in the readme :)