== sanity test 413k: QoS mkdir exclude prefixes ========== 08:11:24 (1775131884)
lmv.lustre-clilmv-ffff8b5c70c51800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff8b5c70c51800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff8b5c70c51800.qos_exclude_prefixes=_temporary