== sanity test 413k: QoS mkdir exclude prefixes ========== 00:04:18 (1790395458)
lmv.lustre-clilmv-ffff9aae60e21000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff9aae60e21000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff9aae60e21000.qos_exclude_prefixes=_temporary