== sanity test 413k: QoS mkdir exclude prefixes ========== 07:33:16 (1773660796)
lmv.lustre-clilmv-ffffa0338562f000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffffa0338562f000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffffa0338562f000.qos_exclude_prefixes=_temporary