== sanity test 413k: QoS mkdir exclude prefixes ========== 02:24:34 (1781245474)
lmv.lustre-clilmv-ffff8afe06898000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff8afe06898000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff8afe06898000.qos_exclude_prefixes=_temporary