== sanity test 413k: QoS mkdir exclude prefixes ========== 20:31:06 (1787790666)
lmv.lustre-clilmv-ffff908283f32000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff908283f32000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff908283f32000.qos_exclude_prefixes=_temporary