== sanity test 413k: QoS mkdir exclude prefixes ========== 09:04:42 (1748869482)
lmv.lustre-clilmv-ffff88012b217800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff88012b217800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff88012b217800.qos_exclude_prefixes=_temporary