== sanity test 413k: QoS mkdir exclude prefixes ========== 03:45:15 (1746085515)
lmv.lustre-clilmv-ffff88008a8bc800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff88008a8bc800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff88008a8bc800.qos_exclude_prefixes=_temporary