I'm a fresher to openstack . I followed the "Quick Start" Quick Start step by step, but after "packstack --allinone" packstack --allinone was done, I found my server couldn't connect to network and the light on Ethernet card went off. (server:IBM system x3650 m4) I also found "checking checking if the Cinder server has a cinder-volumes vg.." vg.. took a long time.I didn't create space for Cinder server,because someone says it is not necessary. Could anyone help me ? Thanks in advance !