== sanity test 413k: QoS mkdir exclude prefixes ========== 08:11:44 (1756815104)
lmv.lustre-clilmv-ffff91aa83222800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff91aa83222800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff91aa83222800.qos_exclude_prefixes=_temporary