== sanity test 413k: QoS mkdir exclude prefixes ========== 22:40:15 (1733802015)
lmv.lustre-clilmv-ffff8800afe26800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff8800afe26800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff8800afe26800.qos_exclude_prefixes=_temporary