== sanity test 413k: QoS mkdir exclude prefixes ========== 02:52:07 (1773211927)
lmv.lustre-clilmv-ffff941ef1505000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff941ef1505000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff941ef1505000.qos_exclude_prefixes=_temporary