== sanity test 413k: QoS mkdir exclude prefixes ========== 22:14:19 (1746152059)
lmv.lustre-clilmv-ffff88012e10b000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff88012e10b000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff88012e10b000.qos_exclude_prefixes=_temporary