== sanity test 413k: QoS mkdir exclude prefixes ========== 04:02:04 (1787472124)
lmv.lustre-clilmv-ffff91e6202da800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff91e6202da800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff91e6202da800.qos_exclude_prefixes=_temporary