fuse based filesystems in general shouldn’t be treated as production ready in my experience.

They’re wonderful for low volume, low performance and low reliability operations. (browsing, copying, integrating with legacy systems that do not permit native access), but beyond that they consume huge resources and do odd things when the backend is not in its most ideal state.

I started rewriting gcsfuse using https://github.com/hanwen/go-fuse instead of https://github.com/jacobsa/fuse and found it rock-solid. FUSE has come a long way in the last few years, including things like passthrough.

Honestly, I'd give FUSE a second chance, you'd be surprised at how useful it can be -- after all, it's literally running in userland so you don't need to do anything funky with privileges. However, if I starting afresh on a similar project I'd probably be looking at using 9p2000.L instead.

AWS Lambda uses FUSE and that’s one of the largest prod systems in the world.