== sanity test 413k: QoS mkdir exclude prefixes ========== 00:15:03 (1788840903)
lmv.lustre-clilmv-ffff8ab127cbe800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff8ab127cbe800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff8ab127cbe800.qos_exclude_prefixes=_temporary