== sanity test 413k: QoS mkdir exclude prefixes ========== 20:25:55 (1784593555)
lmv.lustre-clilmv-ffff940c47661800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff940c47661800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff940c47661800.qos_exclude_prefixes=_temporary