[ovirt-users] VM Deployment By Template

[Punit Dambiwal]

Hi Darren,

Is it possible to change the Storage Allocation policy by cloud-init ?? as
i want to deploy every VM with thin provisioning...i think the default
method for the Template Provisioning is clone...
Thanks,
Punit




On Wed, Aug 27, 2014 at 10:20 AM, Darren Hart <darren.hart at otago.ac.nz>
wrote:

>  So you essentially want to just deploy a new VM based on a template with
> a thin provisioned disk ?
>
>  When you create your VM based on the template check in advanced options
> – Resource allocation and see if the option there for template provisioning
> is set to clone or to thin provision. Clone in your case I believe would
> create a 40GB image file based on the template whereas thin provision will
> create you a thin provisioned disk just using the same actual data amount
> as the thin provisioned template. I’m pretty sure you can only do this if
> your template disk is thin (not preallocated) provisioned.
>
>
>
>   Darren Hart | IT Manager | Department of Biochemistry | University of
> Otago
>
> *T* - +6434794965 | *M* - +6421991638
>
>   From: Punit Dambiwal <hypunit at gmail.com>
> Date: Wednesday, 27 August 2014 1:18 pm
> To: Michal Skrivanek <michal.skrivanek at redhat.com>
> Cc: "ahadas at redhat.com" <ahadas at redhat.com>, "users at ovirt.org" <
> users at ovirt.org>
> Subject: Re: [ovirt-users] VM Deployment By Template
>
>   Hi Michal,
>
>  I want to deploy the VM with the template but the problem is in ovirt
> when you deploy the VM by template it copy the whole image(even thin or
> thick disk)...like if i have 40GB virtual size (actual size 1GB) disk....it
> will copy the whole 40GB to provision the virtual machine....so if i want
> to deploy 10 VM simultaneous then it will copy 4TB data and take long time
> to provision....
>
>  I want the way i can make the template with small size....and once i
> choose to create the virtual machine with 40GB...the VM deploy with the
> small template on the 40GB disk... is it possible with ovirt.. ??
>
>  Thanks,
> Punit
>
>
> On Tue, Aug 26, 2014 at 9:01 PM, Michal Skrivanek <
> michal.skrivanek at redhat.com> wrote:
>
>>
>> On Aug 26, 2014, at 12:01 , Punit Dambiwal <hypunit at gmail.com> wrote:
>>
>> > Hi Michal,
>> >
>> > 2. I find disk size can not modify at the time of VM provisioning,is
>> there any way to modify the VM disk size ??
>> >
>> > well, not really, AFAIK.
>> > create another disk, move your data, remove the original Or create a
>> bigger thin provisioned disk at the beginning...
>> >
>> > I didn't understand the mean...i can create the another disk...it's
>> ok...but how to move the data from the existing disk to new disk at the
>> time of the VM deployment... ?? is there any way to move the data.. ??
>>  Hi,
>>
>> You would have to do that inside the guest…the same way as you would do
>> it on real hardware…mount both disks, move the relevant data
>> not trivial and not automated
>>
>> >
>> > Another question is there any way to mount the img like i will create
>> the VM with blank template with my preferred disk size and leter on install
>> the OS through any OS template ??? i know i can install the OS through
>> CD-ISO but i don't want the manual installation…
>>
>> so you want to have a preinstalled OS…so how did you want to use it?
>> I probably don't understand what are you trying to achieve.
>> Anything else than having a Template with OS and you deploy VMs from
>> that….you need to change disk sizes for each such VM? Could it be done by
>> adding an additional disk?
>>
>> Thanks,
>> michal
>>
>> >
>> > Thanks,
>> > Punit
>> >
>> >
>> > On Tue, Aug 26, 2014 at 5:51 PM, Michal Skrivanek <
>> michal.skrivanek at redhat.com> wrote:
>> >
>> > On Aug 26, 2014, at 05:26 , Punit Dambiwal <hypunit at gmail.com> wrote:
>> >
>> > > Hi All,
>> > >
>> > > I have some questions regarding the VM deployment through OS
>> template...
>> > >
>> > > 1. I have imported centos template from openstack glance (the actual
>> size of the template is 16GB but used is 1GB)...now my question is if i
>> deploy the new VM with this template,the process will copy the whole 16GB
>> or just 1 GB to create the new VM ??
>> >
>> > if you deploy with thin provisioned disks it should be 1GB
>> >
>> > >
>> > > 2. I find disk size can not modify at the time of VM provisioning,is
>> there any way to modify the VM disk size ??
>> >
>> > well, not really, AFAIK.
>> > create another disk, move your data, remove the original.
>> > Or create a bigger thin provisioned disk at the beginning
>> >
>> > >
>> > > Thanks,
>> > > Punit
>> > >
>> > >
>> > > On Mon, Aug 25, 2014 at 5:42 PM, Punit Dambiwal <hypunit at gmail.com>
>> wrote:
>> > > Hi All,
>> > >
>> > > I have some questions regarding the VM deployment through OS
>> template...
>> > >
>> > > 1. I have imported centos template from openstack glance (the actual
>> size of the template is 16GB but used is 1GB)...now my question is if i
>> deploy the new VM with this template,the process will copy the whole 16GB
>> or just 1 GB to create the new VM ??
>> > >
>> > > 2. I find disk size can not modify at the time of VM provisioning,is
>> there any way to modify the VM disk size ??
>> > >
>> > > Thanks,
>> > > Punit
>> > >
>> >
>> >
>>
>>
>
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