== sanity test 413k: QoS mkdir exclude prefixes ========== 07:26:30 (1713439590)
lmv.lustre-clilmv-ffff8800b602e800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff8800b602e800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff8800b602e800.qos_exclude_prefixes=_temporary