== sanity test 413k: QoS mkdir exclude prefixes ========== 06:18:04 (1789294684)
lmv.lustre-clilmv-ffffa058901da000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffffa058901da000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffffa058901da000.qos_exclude_prefixes=_temporary