Hello, Matt. You wrote 7 марта 2013 г., 2:19:19: MH> What happens if you pre-create the sparse files before you invoke MH> fio and then use the filename= argument to specify to fio to use your MH> sparse files? Good idea! I'll try it as soon as solve problem with assertion (see my previous message). -- // Black Lion AKA Lev Serebryakov <lev@xxxxxxxxxxxxxxxxxx> -- 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