== sanity test 413k: QoS mkdir exclude prefixes ========== 21:40:04 (1782870004)
lmv.lustre-clilmv-ffff967ab8d16800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff967ab8d16800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff967ab8d16800.qos_exclude_prefixes=_temporary