== sanity test 413k: QoS mkdir exclude prefixes ========== 02:44:57 (1789713897)
lmv.lustre-clilmv-ffff933f60c7b800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff933f60c7b800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff933f60c7b800.qos_exclude_prefixes=_temporary