== sanity test 413k: QoS mkdir exclude prefixes ========== 17:30:59 (1760131859)
lmv.lustre-clilmv-ffff9cc647e6b800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff9cc647e6b800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff9cc647e6b800.qos_exclude_prefixes=_temporary