== sanity test 413k: QoS mkdir exclude prefixes ========== 01:40:30 (1780810830)
lmv.lustre-clilmv-ffff90dc24b62800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff90dc24b62800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff90dc24b62800.qos_exclude_prefixes=_temporary