[ovirt-users] Re: How to reduce load during create VM
On Mon, Apr 26, 2021 at 12:36 PM <ovirt.org(a)nevim.eu> wrote:
Hi, no, we don't use bit cloning via "clone" function, but we use templates
as a raw format template.
When creating a VM through this template, the server load will increase a lot.
We want to minimize this sharp increase during the establishment. We are willing to wait
longer to set up the server.
Try what Arik suggested:
Open VM > Resource Allocation tab
Set "Storage Allocation" to "Thin"
This will create create an empty qcow2 image using the template disk
as a backing file.
No data will be copied when creating the VM.
But note that this creates a dependency on the template. You will not
be able to move
the disk to another storage domain without copying the template to the
other storage
domain. This also creates a single point of failure - if the template
become corrupted all
the vm on top of it will break.
Nir