== sanity test 413k: QoS mkdir exclude prefixes ========== 20:15:14 (1746144914)
lmv.lustre-clilmv-ffff88007ce80800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff88007ce80800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff88007ce80800.qos_exclude_prefixes=_temporary