== sanity test 413k: QoS mkdir exclude prefixes ========== 00:15:32 (1787717732)
lmv.lustre-clilmv-ffffa083d05ae800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffffa083d05ae800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffffa083d05ae800.qos_exclude_prefixes=_temporary