== sanity test 413k: QoS mkdir exclude prefixes ========== 19:16:22 (1787613382)
lmv.lustre-clilmv-ffff9243c31c3800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff9243c31c3800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff9243c31c3800.qos_exclude_prefixes=_temporary