[jira] [Created] (CLOUDSTACK-8715) Add support for qemu-guest-agent to libvirt provider

["Sten Spans (JIRA)" <ji...@apache.org>]

Sten Spans created CLOUDSTACK-8715:
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             Summary: Add support for qemu-guest-agent to libvirt provider
                 Key: CLOUDSTACK-8715
                 URL: https://issues.apache.org/jira/browse/CLOUDSTACK-8715
             Project: CloudStack
          Issue Type: New Feature
      Security Level: Public (Anyone can view this level - this is the default.)
          Components: KVM
            Reporter: Sten Spans


The qemu guest agent is a newer part of qemu/kvm/libvirt which exposes quite a lot of useful functionality, which can only be provided by having an agent on the VM. This includes things like freezing/thawing filesystems (for backups), reading files on the guest, listing interfaces / ip addresses, etc.

This feature has been requested by users, but is currently not implemented.
http://users.cloudstack.apache.narkive.com/3TTmy3zj/enabling-qemu-guest-agent

The first change needed is to add the following to the XML generated for KVM virtual machines,:

<channel type='unix'>
  <source mode='bind'/>
  <target type='virtio' name='org.qemu.guest_agent.0'/>
</channel>

This provides the communication channel between libvirt and the agent on the host. All in all a pretty simple change to LibvirtComputingResource.java / LibvirtVMDef.java

Secondly the qemu-guest-agent package needs to be added to the systemvm template.



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