== sanity test 413k: QoS mkdir exclude prefixes ========== 01:55:57 (1788674157)
lmv.lustre-clilmv-ffff8917c8037800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff8917c8037800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff8917c8037800.qos_exclude_prefixes=_temporary