about the clonetype of the vm disk when vm is cloned from template
There are some options for clone disk for other platform like oVirt. --clonetype [thin|full] A thin clone uses copy-on-write (COW) reflinked clone meaning it is dependent on the base template, but enables rapid cloning. Full clone will make a full physical copy hence not be dependent on the base template. Thin clone uses less space and will not be as performant as full clone, especially under heavy write workloads. By default a thin clone is created, great for testing; should be avoided in production environments. I want to know which type is oVirt using when we clone vm from template ?
On Fri, Aug 13, 2021 at 8:06 AM Tommy Sway <sz_cuitao@163.com> wrote:
There are some options for clone disk for other platform like oVirt. --clonetype [thin|full]
A thin clone uses copy-on-write (COW) reflinked clone meaning it is dependent on the base template, but enables rapid cloning. Full clone will make a full physical copy hence not be dependent on the base template.
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I want to know which type is oVirt using when we clone vm from template ?
We support both. When creating a vm you can select to optimize for Server or Desktop. - For Server we default to creating the vm image by cloning the template to a new disk. The vm does not depend on the template disk. - For Sesktop we default to creating a thin disk using the template disk as a backing file. This vm depends on the template. To select different storage allocation you can open the "Resource Allocation" tab and select Clone or Thin from the "Storage allocation" section. See the attached screenshots. Nir
Thank you! -----Original Message----- From: users-bounces@ovirt.org <users-bounces@ovirt.org> On Behalf Of Nir Soffer Sent: Saturday, August 14, 2021 1:31 AM To: Tommy Sway <sz_cuitao@163.com> Cc: users <users@ovirt.org> Subject: [ovirt-users] Re: about the clonetype of the vm disk when vm is cloned from template On Fri, Aug 13, 2021 at 8:06 AM Tommy Sway <sz_cuitao@163.com> wrote:
There are some options for clone disk for other platform like oVirt. --clonetype [thin|full]
A thin clone uses copy-on-write (COW) reflinked clone meaning it is dependent on the base template, but enables rapid cloning. Full clone will make a full physical copy hence not be dependent on the base template.
...
I want to know which type is oVirt using when we clone vm from template ?
We support both. When creating a vm you can select to optimize for Server or Desktop. - For Server we default to creating the vm image by cloning the template to a new disk. The vm does not depend on the template disk. - For Sesktop we default to creating a thin disk using the template disk as a backing file. This vm depends on the template. To select different storage allocation you can open the "Resource Allocation" tab and select Clone or Thin from the "Storage allocation" section. See the attached screenshots. Nir
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Nir Soffer -
Tommy Sway