JuiceFS is mostly POSIX compatible, but there are important caveats such as no extended ACL, copying files changes their mtime (impacts backup tools), it offers

JuiceFS is mostly POSIX compatible, but there are important caveats such as no extended ACL, copying files changes their mtime (impacts backup tools), it offers "close-to-open" consistency (dangerous for log appenders), etc. Choosing an appropriate solution in this space still depends on what you need to do with the storage, and a few other options are MooseFS (https://github.com/moosefs/moosefs https://github.com/moosefs/moosefs) SeaweedFS (https://github.com/seaweedfs/seaweedfs https://github.com/seaweedfs/seaweedfs) Curve (https://github.com/opencurve/curve https://github.com/opencurve/curve) GeeseFS (https://github.com/yandex-cloud/geesefs https://github.com/yandex-cloud/geesefs)