== sanity test 413k: QoS mkdir exclude prefixes ========== 10:11:19 (1787580679)
lmv.lustre-clilmv-ffff9bddf8fa1000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff9bddf8fa1000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff9bddf8fa1000.qos_exclude_prefixes=_temporary