== sanity test 413k: QoS mkdir exclude prefixes ========== 19:13:34 (1786835614)
lmv.lustre-clilmv-ffff8fcfe6e39800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff8fcfe6e39800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff8fcfe6e39800.qos_exclude_prefixes=_temporary