== sanity test 413k: QoS mkdir exclude prefixes ========== 12:08:37 (1781280517)
lmv.lustre-clilmv-ffff97d760740800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff97d760740800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff97d760740800.qos_exclude_prefixes=_temporary