== sanity test 413k: QoS mkdir exclude prefixes ========== 04:30:17 (1724315417)
lmv.lustre-clilmv-ffff88008765e800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff88008765e800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff88008765e800.qos_exclude_prefixes=_temporary