== sanity test 413k: QoS mkdir exclude prefixes ========== 08:48:51 (1787748531)
lmv.lustre-clilmv-ffff9493cf539800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff9493cf539800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff9493cf539800.qos_exclude_prefixes=_temporary