10:04 a.m.
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 ?
Thanks
Matt
12:53 p.m.
On Thu, Jan 9, 2014 at 11:04 AM, Teto <mattator(a)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
5:09 p.m.
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(a)gmail.com>:
On Thu, Jan 9, 2014 at 11:04 AM, Teto <mattator(a)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
7:28 p.m.
On Sun, Jan 12, 2014 at 6:09 PM, Teto <mattator(a)gmail.com> wrote:
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 ?
Sorry, I don't really know about that. Hopefully someone else will be
able to answer.
Chris
3999
days inactive
4003
days old
3 comments
2 participants
participants (2)
-
Chris Lalancette -
Teto