OpenNebula

Currently VMM KVM driver does not retrieve network statistics. Rogier Mars has created a patch to get this information, here follows his email:

I've created a quick patch (see below) to the file one_vmm_kvm.rb to include proper monitoring of network interface statistics for KVM.
This patch uses the libvirt dumpxml command and domifstat to get interface statistics.

I've attached the updated one_vmm_kvm.rb file, see the patch below.

Best regards,

Rogier

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> require 'rexml/document'
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<         :poll     => "virsh --connect #{LIBVIRT_URI} dominfo" 
---
>         :poll     => "virsh --connect #{LIBVIRT_URI} dominfo",
>         :netstats => "virsh --connect #{LIBVIRT_URI} domifstat",
>         :dumpxml  => "virsh --connect #{LIBVIRT_URI} dumpxml" 
>
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>         exe2  = SSHCommand.run("#{LIBVIRT[:dumpxml]} #{deploy_id}", host,
>                               log_method(id))
>
>        doc = REXML::Document.new(exe2.stdout)
>        interfaces = []
>        doc.elements.each('domain/devices/interface/target') do |ele|
>           interfaces << ele.attributes["dev"]
>        end
>
>         exe3  = SSHCommand.run("#{LIBVIRT[:netstats]} #{deploy_id} #{interfaces}", host,
>                               log_method(id))
>
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>
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>         exe3.stdout.each_line {|line|
>             columns=line.split(" ").collect {|c| c.strip }
>             case columns[1]
>                 when 'rx_bytes'
>                     info << " #{POLL_ATTRIBUTE[:netrx]}="  << (columns[2].to_i).to_s
>                 when 'tx_bytes'
>                     info << " #{POLL_ATTRIBUTE[:nettx]}="  << (columns[2].to_i).to_s
>             end
> }
>