== sanity test 413k: QoS mkdir exclude prefixes ========== 21:20:25 (1745630425)
lmv.lustre-clilmv-ffff8800a8301000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff8800a8301000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff8800a8301000.qos_exclude_prefixes=_temporary