== sanity test 413k: QoS mkdir exclude prefixes ========== 10:09:31 (1741702171)
lmv.lustre-clilmv-ffff8800b3d90800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff8800b3d90800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff8800b3d90800.qos_exclude_prefixes=_temporary