== sanity test 413k: QoS mkdir exclude prefixes ========== 10:13:39 (1746800019)
lmv.lustre-clilmv-ffff8800b637d800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff8800b637d800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff8800b637d800.qos_exclude_prefixes=_temporary