== sanity test 413k: QoS mkdir exclude prefixes ========== 16:24:04 (1780345444)
lmv.lustre-clilmv-ffff9515189c5000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff9515189c5000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff9515189c5000.qos_exclude_prefixes=_temporary