[virt-tools-list] Usage of virt-clone

[Bla Blubb]

Hi Cole,

thanks for your answer! This looks very nice and sounds logic but doesn't
work. :(
I have updated my libvirt to version 0.8.1 on both sides.

Then I have done the following on the SERVER:
virsh pool-define-as blubb --type dir  --target /image
virsh pool-start blubb
virsh pool-autostart blubb

And it looks like:
virsh pool-list --all
Name                 State      Autostart
-----------------------------------------
blubb                active     yes

Then I dow the following on the SLAVE:
virt-clone --connect xen+tcp://server/ --original blubb --name kopievonblubb
--file /image/kopievonblubb.img
ERROR    [Errno 2] Datei oder Verzeichnis nicht gefunden: '/image/blubb.img'


I think he does not find the Pool. I have read with virt-install i can say
"--disk vol=blubb" but virt-clone expect "--file". I have look around the
web find nothing helpfull like a Howto to clone images on a remote host. :(

I tell you all I do, maybe there is a mistake...

On the SERVER is a mountet folder called "/images". I defined it as a pool,
described above.
On the SLAVE I have an xml file for a guest looks like:
<domain type='xen'>
  <name>blubb</name>
  <memory>262144</memory>
  <vcpu>1</vcpu>
  <on_poweroff>destroy</on_poweroff>
  <on_reboot>destroy</on_reboot>
  <on_crash>destroy</on_crash>
  <features>
    <acpi/>
    <apic/>
  </features>
  <os>
    <type>hvm</type>
    <loader>/usr/lib/xen-3.2-1/boot/hvmloader</loader>
    <boot dev='cdrom'/>
  </os>
  <devices>
    <emulator>/usr/lib/xen-3.2-1/bin/qemu-dm</emulator>
    <interface type='bridge'>
      <source bridge='tmpbridge'/>
      <mac address='00:16:3e:00:00:01'/>
      <script path='vif-bridge'/>
    </interface>
    <disk type='file' device='disk'>
      <driver name='file'/>
      <source disk='/image/blubb.img'/>
      <target dev='hda'/>
    </disk>
    <disk type='file' device='cdrom'>
      <source file='/image/blubb.iso'/>
      <target dev='hdc'/>
      <readonly/>
    </disk>
    <graphics type='vnc'  autoport='yes'/>
    <input type='tablet' bus='usb'/>
  </devices>
</domain>


On the SLAVE I define this VM like:
virsh --connect xen+tcp://server/ define blubb.xml

And then I want to clone this VM like decribed above.

Hope somebody can help :)

Regards , Jessica






2010/7/15 Cole Robinson <crobinso at redhat.com>

> On 07/15/2010 06:14 AM, Bla Blubb wrote:
> > Hi,
> >
> > I want to use libvirt to manage my Xen-Server and have some questions.
> >
> > I have one SERVER with libvirt-bin 0.4.6.1 (from the Debian Lenny
> > Repository), Xen 3.1. All the images of Xen determine in /image.
> >
> > Then I have an SLAVE with libvirt-bin 0.4.6.1 (from the Debian Lenny
> > Repository).
> >
> >>From this SLAVE I want to start / stop and clone my virtual machines on
> > SERVER. I figured out to place the configuration files on the SLAVE to
> start
> > / stop the virtual machines on the SERVER.
> >
> > Now I want to clone a defined VM:
> > virt-clone --connect xen+tcp://server/ --original blubb --name
> kopievonblubb
> > --file /image/kopievonblubb.img
> > ERROR    [Errno 2] Datei oder Verzeichnis nicht gefunden:
> '/image/blubb.img'
> >
> > I want to clone the VM on the SERVER and place the clones Image on the
> > SERVER in the /image folder.
> > Does this cloning not working on remote hosts? Or have I a mistake or is
> the
> > version of libvirt to old?
> >
>
> The version of libvirt on the both hosts is too old. You need at least
> libvirt 0.6.4, and virtinst 0.500.0 or later IIRC. Then you need to make
> sure that your storage is part of a libvirt storage pool (basically make
> /image on the server a libvirt directory pool: virsh pool-define-as
> --type dir --target /images)
>
> - Cole
>
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