== sanity test 413k: QoS mkdir exclude prefixes ========== 03:48:05 (1746085685)
lmv.lustre-clilmv-ffff88012fb40800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff88012fb40800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff88012fb40800.qos_exclude_prefixes=_temporary