writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, err), r.URL)
		return
	}

	// freshly retrieve the config so that default values are loaded for reset config
	if cfg, err = getValidConfig(objectAPI); err != nil {
		writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, err), r.URL)
		return
	}

	dynamic := config.SubSystemsDynamic.Contains(subSys)
	if dynamic {

	globalServerConfigMu.Lock()
	globalServerConfig = srvCfg
	globalServerConfigMu.Unlock()

	// Save config into file.
	return saveServerConfig(GlobalContext, objAPI, srvCfg)
}

func getValidConfig(objAPI ObjectLayer) (config.Config, error) {
	return readServerConfig(GlobalContext, objAPI, nil)
}

// loadConfig - loads a new config from disk, overrides params
// from env if found and valid

	case serviceUnFreeze:
		unfreezeServices()
	case serviceReloadDynamic:
		objAPI := newObjectLayerFn()
		if objAPI == nil {
			return np, grid.NewRemoteErr(errServerNotInitialized)
		}
		srvCfg, err := getValidConfig(objAPI)
		if err != nil {
			return np, grid.NewRemoteErr(err)
		}
		subSys := vars.Get(peerRESTSubSys)
		// Apply dynamic values.
		ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)