== sanity test 413k: QoS mkdir exclude prefixes ========== 06:21:21 (1788258081)
lmv.lustre-clilmv-ffff8a27921ac800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff8a27921ac800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff8a27921ac800.qos_exclude_prefixes=_temporary