== sanity test 413k: QoS mkdir exclude prefixes ========== 12:13:01 (1789143181)
lmv.lustre-clilmv-ffff8b2111332000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff8b2111332000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff8b2111332000.qos_exclude_prefixes=_temporary