== sanity test 413k: QoS mkdir exclude prefixes ========== 22:41:30 (1786070490)
lmv.lustre-clilmv-ffff936d02f54800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff936d02f54800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff936d02f54800.qos_exclude_prefixes=_temporary