Ceph

If a fourth argument is set to a description string in config_opts.h, ceph.in could get access to it via a pybind/common.py module dynamically loading ( CDLL ) the common library and providing an entry point to list all config options in the same way g_conf is used within C++ sources.

Yeah. I would also love to see min/max values for the numeric options.

If we want to think in an internationalization direction, perhaps the right thing is to msg-catalog the help information, and then it could be as simple as "use the internationalized message catalog properly". I'm waving my hands madly here, but the idea of centralized storage for messages applies to both needs; it'd be great if we could kill two requirements with one hack.