== sanity test 413k: QoS mkdir exclude prefixes ========== 04:39:19 (1724315959)
lmv.lustre-clilmv-ffff8800b6788000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff8800b6788000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff8800b6788000.qos_exclude_prefixes=_temporary