== sanity test 413k: QoS mkdir exclude prefixes ========== 06:58:52 (1787741932)
lmv.lustre-clilmv-ffff9871e72ec800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff9871e72ec800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff9871e72ec800.qos_exclude_prefixes=_temporary