== sanity test 413k: QoS mkdir exclude prefixes ========== 11:15:31 (1788880531)
lmv.lustre-clilmv-ffff9399f897f000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff9399f897f000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff9399f897f000.qos_exclude_prefixes=_temporary