== sanity test 413k: QoS mkdir exclude prefixes ========== 18:12:42 (1788646362)
lmv.lustre-clilmv-ffff898dc5cae800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff898dc5cae800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff898dc5cae800.qos_exclude_prefixes=_temporary