== sanity test 413k: QoS mkdir exclude prefixes ========== 19:23:19 (1784416999)
lmv.lustre-clilmv-ffff9db7f2cee000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff9db7f2cee000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff9db7f2cee000.qos_exclude_prefixes=_temporary