== sanity test 413k: QoS mkdir exclude prefixes ========== 04:56:27 (1790931387)
lmv.lustre-clilmv-ffff8b16a7225800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff8b16a7225800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff8b16a7225800.qos_exclude_prefixes=_temporary