Hi Nguyen, Thanks for your reply. Did u mean when I create a gre network offering use ovs as service provider for connectity, and then create a guest isolated network use this offering, at this point a OvsTunnel bridge will be created ?
Regards At 2014-07-25 10:17:08, "Nguyen Anh Tu" <t...@apache.org> wrote: >Michael, > >OVSTunnelxxx is automatically created by Ovs controller. The xxx value is >generated between VLAN range you set in the beginning. For each guest >network you create, Ovs controller will add one OvsTunnel bridge. > >Thanks, > >--Tuna > > >On Fri, Jul 25, 2014 at 7:46 AM, Michael Li <cloudcomp...@163.com> wrote: > >> Hi Nguyen, >> Should I create OVSTunnelxxx ahead like cloudbr0 and cloud0 ? But how to >> confirm the xxx in OVSTunnelxxx, because it's a dynamic value between the >> vm creatation. >> >> >> Regards >> >> >> >> >> At 2014-07-24 06:08:55, "Nguyen Anh Tu" <t...@apache.org> wrote: >> >Hi Michael, >> > >> >The GRE feature on Cloudstack creates OVSTunnelxxx bridges with >> OpenvSwitch >> >to serve tunnel between vms, not cloudbr. Please use ovs-vsctl utility to >> >check if OVSTunnel460 is exist. Remember to blacklist module bridge. >> > >> >This might help: >> > >> https://cwiki.apache.org/confluence/display/CLOUDSTACK/KVM+with+OpenVSwitch >> > >> >Thanks, >> > >> >--Tuna >> > >> > >> >On Thu, Jul 24, 2014 at 8:43 AM, Michael Li <cloudcomp...@163.com> wrote: >> > >> >> In 4.4, Can somebody explain, why use "OVSTunnelxxx" for GRE tunnel >> >> device, and not "cloudbr1" ? >> >> When create VM, this will result an exception: >> >> >> >> 2014-07-23 21:03:35,886 WARN [kvm.resource.LibvirtComputingResource] >> >> (agentRequest-Handler-5:null) LibvirtException >> >> org.libvirt.LibvirtException: Cannot get interface MTU on >> 'OVSTunnel460': >> >> no such device >> >> at org.libvirt.ErrorHandler.processError(Unknown Source) >> >> at org.libvirt.Connect.processError(Unknown Source) >> >> at org.libvirt.Connect.processError(Unknown Source) >> >> at org.libvirt.Connect.domainCreateXML(Unknown Source) >> >> at >> >> >> com.cloud.hypervisor.kvm.resource.LibvirtComputingResource.startVM(LibvirtComputingResource.java:1239) >> >> at >> >> >> com.cloud.hypervisor.kvm.resource.LibvirtComputingResource.execute(LibvirtComputingResource.java:3798) >> >> at >> >> >> com.cloud.hypervisor.kvm.resource.LibvirtComputingResource.executeRequest(LibvirtComputingResource.java:133 >> >> 3) >> >> at com.cloud.agent.Agent.processRequest(Agent.java:501) >> >> at >> com.cloud.agent.Agent$AgentRequestHandler.doTask(Agent.java:808) >> >> at com.cloud.utils.nio.Task.run(Task.java:84) >> >> at >> >> >> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110) >> >> at >> >> >> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603) >> >> at java.lang.Thread.run(Thread.java:722) >> >> >> >> I found code as below: >> >> public InterfaceDef plug(NicTO nic, String guestOsType) >> >> } else if (nic.getBroadcastType() == >> Networks.BroadcastDomainType.Vswitch) >> >> { String vnetId = >> >> Networks.BroadcastDomainType.getValue(nic.getBroadcastUri()); >> >> String brName = "OVSTunnel" + vnetId; >> >> >>
