== sanity test 413k: QoS mkdir exclude prefixes ========== 01:45:01 (1786427101)
lmv.lustre-clilmv-ffff952b484bd000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff952b484bd000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff952b484bd000.qos_exclude_prefixes=_temporary