== sanity test 413k: QoS mkdir exclude prefixes ========== 10:25:04 (1786717504)
lmv.lustre-clilmv-ffff9b3dc7688800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff9b3dc7688800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff9b3dc7688800.qos_exclude_prefixes=_temporary