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https://issues.apache.org/jira/browse/CLOUDSTACK-8715?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15291187#comment-15291187
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ASF GitHub Bot commented on CLOUDSTACK-8715:
--------------------------------------------
Github user wido commented on a diff in the pull request:
https://github.com/apache/cloudstack/pull/1545#discussion_r63889814
--- Diff:
plugins/hypervisors/kvm/src/com/cloud/hypervisor/kvm/resource/LibvirtComputingResource.java
---
@@ -1978,11 +1978,16 @@ So if getMinSpeed() returns null we fall back to
getSpeed().
final SerialDef serial = new SerialDef("pty", null, (short)0);
devices.addDevice(serial);
+ /* Add a VirtIO channel for SystemVMs for communication and
provisioning */
if (vmTO.getType() != VirtualMachine.Type.User) {
- final VirtioSerialDef vserial = new
VirtioSerialDef(vmTO.getName(), null);
- devices.addDevice(vserial);
+ devices.addDevice(new ChannelDef(vmTO.getName() + ".vport",
ChannelDef.ChannelType.UNIX,
+ "/var/lib/libvirt/qemu/" +
vmTO.getName() + ".agent"));
--- End diff --
This has always been hardcoded, it's just that I'm moving this part.
This is the SSVM socket which is already there. The socket patch code wants
to find the .agent there. Not much I can do there.
> 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
> Assignee: Wido den Hollander
> Labels: kvm, libvirt, qemu, systemvm
> Fix For: Future
>
>
> 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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