== sanity test 413k: QoS mkdir exclude prefixes ========== 19:09:41 (1746140981)
lmv.lustre-clilmv-ffff88012bfc5000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff88012bfc5000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff88012bfc5000.qos_exclude_prefixes=_temporary