== sanity test 413k: QoS mkdir exclude prefixes ========== 14:10:20 (1788977420)
lmv.lustre-clilmv-ffff8ba6c7049800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff8ba6c7049800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff8ba6c7049800.qos_exclude_prefixes=_temporary