== sanity test 413k: QoS mkdir exclude prefixes ========== 19:17:10 (1781219830)
lmv.lustre-clilmv-ffff9992c75d0800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff9992c75d0800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff9992c75d0800.qos_exclude_prefixes=_temporary