On Mon, Dec 5, 2016 at 9:18 AM, Shmuel Melamud <smelamud(a)redhat.com> wrote:
On Sun, Dec 4, 2016 at 10:39 PM, Yaniv Kaul <ykaul(a)redhat.com> wrote:
>
>
> On Dec 4, 2016 8:50 PM, "Shmuel Melamud" <smelamud(a)redhat.com>
wrote:
>
> Hi!
>
> I'm currently working on integration of virt-sysprep into oVirt.
>
> Usually, if user creates a template from a regular VM, and then creates
> new VMs from this template, these new VMs inherit all configuration of the
> original VM, including SSH keys, UDEV rules, MAC addresses, system ID,
> hostname etc. It is unfortunate, because you cannot have two network
> devices with the same MAC address in the same network, for example.
>
> To avoid this, user must clean all machine-specific configuration from
> the original VM before creating a template from it. You can do this
> manually, but there is virt-sysprep utility that does this automatically.
>
> Ideally, virt-sysprep should be seamlessly integrated into template
> creation process. But the first step is to create a simple button: user
> selects a VM, clicks the button and oVirt executes virt-sysprep on the VM.
>
>
> User selects a VM or a template disk?
>
A VM. It is not safe to modify template disks. We cannot guarantee that
there are no VMs based on this template, because some of them may reside on
a detached storage.
Any template disk that VM were derived from it is not safe to perform this
operation. On a pristine template disk it is Ok - and it is exactly where I
expect this process to take place.
The user flow should be a checkbox in the create template flow.
Y.
Shmuel