Distributed Cloud Architecture CODT2023 Openstack ceph 20171115 vtj Openstack kolla 20171025 josug v3 Ceph Performance on OpenStack - Barcelona Summit Openstack neutron vtjseminar_20160302 openstack_neutron-dvr_os5thaniv_20150713 openstack_neutron-ovs_osc2014tf_20141019 
