== sanity test 413k: QoS mkdir exclude prefixes ========== 05:58:36 (1788515916)
lmv.lustre-clilmv-ffffa00a34639800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffffa00a34639800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffffa00a34639800.qos_exclude_prefixes=_temporary