Hi, (Jens- Thanks for the speedy work on this.) I just pulled from git and built (fio-2.1.7-29-gbc4f5). The patch will supply the parameter if it was missing from the config: works: ./fio --runtime=10 derf.cfg (derf.cfg has "time_based" but no "runtime") will throws "no runtime" error: ./fio derf.cfg but will not replace an existing parameter as would happen if it's twice in the cfg file. Also tried forcing global "./fio --name=global --runtime=10 derf.cfg", but no luck, either. I'll try poking around the area of the changes. (I have 7-8 parameters that I want to individually override, and using env vars has gotten ugly and needs a helper script.) z! -- To unsubscribe from this list: send the line "unsubscribe fio" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html