== sanity test 413k: QoS mkdir exclude prefixes ========== 17:24:40 (1786742680)
lmv.lustre-clilmv-ffff8b8011696800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff8b8011696800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff8b8011696800.qos_exclude_prefixes=_temporary