== sanity test 413k: QoS mkdir exclude prefixes ========== 23:50:02 (1723261802)
lmv.lustre-clilmv-ffff88008a381800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff88008a381800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff88008a381800.qos_exclude_prefixes=_temporary