== sanity test 413k: QoS mkdir exclude prefixes ========== 18:52:03 (1787871123)
lmv.lustre-clilmv-ffff8898080ec800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff8898080ec800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff8898080ec800.qos_exclude_prefixes=_temporary