== sanity test 413k: QoS mkdir exclude prefixes ========== 17:20:21 (1786656021)
lmv.lustre-clilmv-ffff8c7118f01800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff8c7118f01800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff8c7118f01800.qos_exclude_prefixes=_temporary