== sanity test 413k: QoS mkdir exclude prefixes ========== 02:17:21 (1788934641)
lmv.lustre-clilmv-ffff8b0558287800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff8b0558287800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff8b0558287800.qos_exclude_prefixes=_temporary