== sanity test 413k: QoS mkdir exclude prefixes ========== 10:55:55 (1787064955)
lmv.lustre-clilmv-ffffa0af90cb9000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffffa0af90cb9000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffffa0af90cb9000.qos_exclude_prefixes=_temporary