== sanity test 413k: QoS mkdir exclude prefixes ========== 16:21:21 (1738963281)
lmv.lustre-clilmv-ffff8800a8b22800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff8800a8b22800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff8800a8b22800.qos_exclude_prefixes=_temporary