Historically, I believe bcache offered a better design than dm-cache. I wonder if that has changed at all? That said, for this use, I would be very concerned

Historically, I believe bcache offered a better design than dm-cache. I wonder if that has changed at all? That said, for this use, I would be very concerned about coherency issues putting any cache in front of the actual distributed filesystem. (Unless this is the only node doing writes, I guess?)