== sanity test 413k: QoS mkdir exclude prefixes ========== 15:19:41 (1783970381)
lmv.lustre-clilmv-ffff8d7670b15800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff8d7670b15800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff8d7670b15800.qos_exclude_prefixes=_temporary