== sanity test 413k: QoS mkdir exclude prefixes ========== 13:34:57 (1789320897)
lmv.lustre-clilmv-ffff967eaeac3800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff967eaeac3800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff967eaeac3800.qos_exclude_prefixes=_temporary