== sanity test 413k: QoS mkdir exclude prefixes ========== 12:07:52 (1772471272)
lmv.lustre-clilmv-ffff9caec974a800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff9caec974a800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff9caec974a800.qos_exclude_prefixes=_temporary