== sanity test 413k: QoS mkdir exclude prefixes ========== 09:54:24 (1787320464)
lmv.lustre-clilmv-ffff8afe90299800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff8afe90299800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff8afe90299800.qos_exclude_prefixes=_temporary