== sanity test 413k: QoS mkdir exclude prefixes ========== 07:25:23 (1734438323)
lmv.lustre-clilmv-ffff88012e374800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff88012e374800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff88012e374800.qos_exclude_prefixes=_temporary