We're in the process of moving to it, and it does seem to have a lot of small bugfixes flying around, but the maintainer is EXTREMELY responsive. I think we'll just end up doing a bit of testing before upgrading to newer versions.

For our use case (3 nodes, 61TB of NVMe) it seems like the best option out of what I looked at (GarageFS, JuiceFS, Ceph). If we had 5+ nodes I'd probably have gone with Ceph though.