I don’t understand from “Lower metadata source:” on the linked documentation how the metadata source is configured. It says:
This is abstract, just some way to read the metadata of lower store store objects. For example it could be a SQLite database […]
It’s not clear from these docs what the options are for providing the lower metadata?
It also says of “Lower store directory”:
Specified with
lower-store.real
setting.
However I didn’t find any examples of this being used?