I was perusing Manage storage | Grafana Loki documentation and saw that neither filesystem nor MinIO is recommended for production use.
There’s an explanation for why filesystem isn’t recommended (Filesystem object store | Grafana Loki documentation) but what’s the story with MinIO?
I am not part of the Loki team, but if I had to guess it’s probably because MinIO doesn’t come supported like cloud storages do, and the Loki team likely isn’t running their tests against MinIO.
It’s one of those things that you can do it if you want, but then you’d have to support MinIO yourself.