== sanity test 413k: QoS mkdir exclude prefixes ========== 10:05:04 (1787839504)
lmv.lustre-clilmv-ffff933543fc5800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff933543fc5800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff933543fc5800.qos_exclude_prefixes=_temporary