== sanity test 413k: QoS mkdir exclude prefixes ========== 07:17:48 (1781003868)
lmv.lustre-clilmv-ffff94055842f800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff94055842f800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff94055842f800.qos_exclude_prefixes=_temporary