== sanity test 413k: QoS mkdir exclude prefixes ========== 08:09:36 (1788782976)
lmv.lustre-clilmv-ffff985891b04800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff985891b04800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff985891b04800.qos_exclude_prefixes=_temporary