== sanity test 413k: QoS mkdir exclude prefixes ========== 05:25:13 (1786699513)
lmv.lustre-clilmv-ffffa068d15f1000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffffa068d15f1000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffffa068d15f1000.qos_exclude_prefixes=_temporary