== sanity test 413k: QoS mkdir exclude prefixes ========== 08:07:48 (1786968468)
lmv.lustre-clilmv-ffff9457d80b3800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff9457d80b3800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff9457d80b3800.qos_exclude_prefixes=_temporary