Comment by JonChesterfield

I think this works. A subset of S3's API does look like a CRDT. Metadata can go in sqlite. Compiles to a static binary easily.

I've spent a mostly pleasant day seeing whether I can reasonably use garage + rclone as a replacement for NFS and the answer appears to be yes. Not really a recommended thing to do. Garage setup was trivial, somewhat reminiscent of wireguard. Rclone setup was a nuisance, accumulated a lot of arguments to get latency down and I think the 1.6 in trixie is buggy.

Each node has rclone's fuse mount layer on it with garage as the backing store. Writes are slow and a bit async, debugging shows that to be wholly my fault for putting rclone in front of it. Reads are fast, whether pretending to be a filesystem or not.

Yep, I think I'm sold. There will be better use cases for this than replacing NFS. Thanks for sharing :)