== sanity test 413k: QoS mkdir exclude prefixes ========== 03:54:00 (1734684840)
lmv.lustre-clilmv-ffff88012b162800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff88012b162800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff88012b162800.qos_exclude_prefixes=_temporary