== sanity test 413k: QoS mkdir exclude prefixes ========== 01:59:57 (1784699997)
lmv.lustre-clilmv-ffff924011810800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff924011810800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff924011810800.qos_exclude_prefixes=_temporary