== sanity test 413k: QoS mkdir exclude prefixes ========== 08:02:01 (1712145721)
lmv.lustre-clilmv-ffff8800a7b9b800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff8800a7b9b800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff8800a7b9b800.qos_exclude_prefixes=_temporary