== sanity test 413k: QoS mkdir exclude prefixes ========== 23:01:31 (1790737291)
lmv.lustre-clilmv-ffff905f251b2800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff905f251b2800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff905f251b2800.qos_exclude_prefixes=_temporary