After I change "include /opt/stack/cinder/volumes/*" to "include /opt/stack/data/cinder/volumes/*" in /etc/tgt/conf.d/cinder.conf, it is ok :).
After I change "include /opt/stack/ cinder/ volumes/ *" to "include /opt/stack/ data/cinder/ volumes/ *" in /etc/tgt/ conf.d/ cinder. conf, it is ok :).