== sanity test 413k: QoS mkdir exclude prefixes ========== 17:24:21 (1789680261)
lmv.lustre-clilmv-ffffa0b884e87000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffffa0b884e87000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffffa0b884e87000.qos_exclude_prefixes=_temporary