== sanity test 413k: QoS mkdir exclude prefixes ========== 09:24:01 (1787750641)
lmv.lustre-clilmv-ffffa05770b64000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffffa05770b64000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffffa05770b64000.qos_exclude_prefixes=_temporary