Hi, Thanks to your advice, I was able to make it work using nokogiri. I am now trying to attach new devices (shared folders) via my custom function: ===== def attach_device(uuid , device) puts "CAlled with uuid #{uuid}" client.lookup_domain_by_uuid(uuid).update_device(device.to_s, 0) end ===== "device.to_s" returns a correct xml for <filesystem>. I then have the following error:

CAlled with uuid 8cc185ef-4bf1-4b78-9caa-cd14c70cd1b3 /home/teto/fog/lib/fog/libvirt/requests/compute/attach_device.rb:38:in `update_device': Call to virDomainUpdateDeviceFlags failed: >Operation not supported: persistent update of device 'filesystem' is not supported (Libvirt::Error)

Does that mean I need to undefine my domain and then recreate it if I want to keep the update persistent ? Regards Matt 2014/1/9 Chris Lalancette <clalancette@gmail.com>:

On Thu, Jan 9, 2014 at 11:04 AM, Teto <mattator@gmail.com> wrote:

...

Hi,

I would like to list devices (for instance I would like to retrieve the <filesystem> part in <devices><filesystem type="mount">...</filesystem></devices>) embedded in a domain via the ruby bindings ?

The steps are roughly: 1. require 'libvirt' 2. Connect to libvirt using the open method 3. Find the domain you care about using lookup_domain_by_name 4. Get the XML for the domain 5. Parse the domain XML using nokogiri or similar

It would look something like this (the details will be somewhat different depending on which connection URI and domain you are using):

require 'libvirt'

conn = Libvirt::open('qemu:///system')

dom = conn.lookup_domain_by_name('f19')

xml_doc = Nokogiri::XML(dom.xml_desc)

devs = xml_doc.xpath('/domain/devices')

After that last line, you'll have the ability to iterate over the devices, and do whatever you want with them. Hope this helps!

Chris