== sanity test 413k: QoS mkdir exclude prefixes ========== 06:40:04 (1712486404)
lmv.lustre-clilmv-ffff88009191f800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff88009191f800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff88009191f800.qos_exclude_prefixes=_temporary