Are you using the latest systemm vm template or the one from 3.0.x?
Try with the new template and let us know if this is still a problem.

On Fri, Jul 12, 2013 at 08:11:24AM +0000, Sailaja Mada wrote:
> Hi,
> 
> I have RHEL 6.2 KVM host with libvirt (0.9.4-23.el6). This is added to 4.2 
> Cloudstack Management server.
> 
> With this KVM host, system VM's are failed to start with error as:
> 
> 2013-07-11 14:22:45,946 WARN  [kvm.resource.LibvirtComputingResource] 
> (agentRequest-Handler-1:null) LibvirtException
> org.libvirt.LibvirtException: internal error unknown timer name 'kvmclock'
>         at org.libvirt.ErrorHandler.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:1126)
>         at 
> com.cloud.hypervisor.kvm.resource.LibvirtComputingResource.execute(LibvirtComputingResource.java:3293)
>         at 
> com.cloud.hypervisor.kvm.resource.LibvirtComputingResource.executeRequest(LibvirtComputingResource.java:1222)
>         at com.cloud.agent.Agent.processRequest(Agent.java:525)
>         at com.cloud.agent.Agent$AgentRequestHandler.doTask(Agent.java:852)
>         at com.cloud.utils.nio.Task.run(Task.java:83)
>         at 
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
>         at 
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
>         at java.lang.Thread.run(Thread.java:679)
> 
> 
> ASF Dev list there is a suggestion to upgrade Libvirt version to 1.0.2 to 
> resolve this issue.  I am getting into lot of dependency failures to upgrade 
> the libvirt version.
> 
> Has any one tried this  workaround?  Will it cause for any issues to existing 
> environments(4.x /3.0.x with KVM 6.2) after upgrade to 4.2 ?
> 
> Thanks,
> Sailaja.M

-- 
Prasanna.,

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