== sanity test 413k: QoS mkdir exclude prefixes ========== 00:47:40 (1786423660)
lmv.lustre-clilmv-ffff91548981f000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff91548981f000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff91548981f000.qos_exclude_prefixes=_temporary