== sanity test 413k: QoS mkdir exclude prefixes ========== 10:42:37 (1789483357)
lmv.lustre-clilmv-ffff92f01035b800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff92f01035b800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff92f01035b800.qos_exclude_prefixes=_temporary