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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CLOUDSTACK-8715) Add support for qemu-guest-agent to libvirt provider
Date Wed, 21 Sep 2016 07:51:20 GMT

    [ https://issues.apache.org/jira/browse/CLOUDSTACK-8715?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15509108#comment-15509108
] 

ASF GitHub Bot commented on CLOUDSTACK-8715:
--------------------------------------------

Github user rhtyd commented on the issue:

    https://github.com/apache/cloudstack/pull/1545
  
    @wido can you change the base back to master for now, @jburwell to use this we'll need
to build/publish new systemvmtemplate. Is that feasible for the LTS release? If so, we'll
need to make changes in the upgrade paths. This is why I'm not in favour of getting this on
4.8 branch, we can discuss whether it's solid enough to include in 4.9 for lts release. In
case we accept this in 4.9, then we've to build a new systemvm template in which case I would
also want to include the strongswan PR (so we dont' have to rebuild another systemvmtemplate
within next month/weeks for 4.10/4.11+)?


> 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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