[Users] Thin Provisioning

Thu Feb 21 16:00:48 UTC 2013

Many thanks for your information Dafna. Quick Start Guide doesn't explain
nothing about this and I have follewed it to create the two VM, Fedora 17
and Windows 7, that I'm using to create Templates and when I have arrived
to this part I have found this problem. Now I know what is the procedure

Juanjo.

On Thu, Feb 21, 2013 at 2:25 PM, Dafna Ron <dron at redhat.com> wrote:

> Hi Juan,
>
> I see what the issue is and it's actually by design.
> The template you created has a Preallocated image.
> in NFS, to make a preallocated image we actually write to the disk to
> make it preallocated.
>
> as you can see, I created a vm with preallocated disk in NFS and if I
> run DU during the creation of the image you can see the size go up:
>
> 2.4G    .
> [root at orion f1a6a2e7-38f1-4a7c-8f3b-efbca664d7aa]# du -h
> 2.5G    .
> [root at orion f1a6a2e7-38f1-4a7c-8f3b-efbca664d7aa]# du -h
> 2.6G    .
> [root at orion f1a6a2e7-38f1-4a7c-8f3b-efbca664d7aa]#
>
>
> so in NFS storage, if your template is preallocated you cannot create a
> thin provision copy vm (distinguishing between the actual data and
> previously zeroed will be complicated).
> you can create a snapshot of that image which will be thin provision but
> it will be linked to the template.
> or you can create a thin provision template and than create a thin
> provision vm or preallocated vm.
>
> Dafna
>
>
>
> On 02/21/2013 01:56 PM, Juan Jose wrote:
> > Hello Dafna,
> >
> > I hope that this two screenshots provides this information.
> >
> > On Thu, Feb 21, 2013 at 11:38 AM, Dafna Ron <dron at redhat.com
> > <mailto:dron at redhat.com>> wrote:
> >
> >     Can you please tell me what disk type you have on the template and
> >     send
> >     a screen shot of the Resource Allocation tab to the
> >     users at ovirt.org <mailto:users at ovirt.org> list?
> >
> >
> >     On 02/21/2013 09:43 AM, Juan Jose wrote:
> >     > Hello Dafna,
> >     >
> >     > Yes, I have already selected the Clone radio button as the Start
> >     Guide
> >     > shows and the Thin Provision doesn't appears.
> >     >
> >     >
> >     > On Wed, Feb 20, 2013 at 5:50 PM, Dafna Ron <dron at redhat.com
> >     <mailto:dron at redhat.com>
> >     > <mailto:dron at redhat.com <mailto:dron at redhat.com>>> wrote:
> >     >
> >     >     ok. so you have 1 NFS data domain which has a template on it
> >     and when
> >     >     you are trying to create a new vm you only have preallocated
> >     disk
> >     >     type.
> >     >
> >     >     when you open the new vm dialogue, after you select the
> >     template,
> >     >     in the
> >     >     Resource allocation tab you need to select the clone radio
> >     button (its
> >     >     near the Template Provisioning).
> >     >     once you do that, the allocation policy scroll will become
> >     active and
> >     >     you will be able to select thin or preallocated.
> >     >
> >     >     let me know if after you select the clone you still only have
> >     >     preallocated.
> >     >
> >     >
> >     >
> >     >     On 02/20/2013 06:09 PM, Juan Jose wrote:
> >     >     > Hello Dafna,
> >     >     >
> >     >     > Are you want to say one NFS domain?, I have one for VM
> >     aand one
> >     >     isos.
> >     >     >
> >     >     >
> >     >     > On Wed, Feb 20, 2013 at 4:46 PM, Dafna Ron
> >     <dron at redhat.com <mailto:dron at redhat.com>
> >     >     <mailto:dron at redhat.com <mailto:dron at redhat.com>>
> >     >     > <mailto:dron at redhat.com <mailto:dron at redhat.com>
> >     <mailto:dron at redhat.com <mailto:dron at redhat.com>>>> wrote:
> >     >     >
> >     >     >     do you have more than one domain?
> >     >     >
> >     >     >
> >     >     >     On 02/20/2013 05:38 PM, Juan Jose wrote:
> >     >     >     > Hello everybody,
> >     >     >     >
> >     >     >     > I'm following the Quick Start Guide to clone a
> >     machine from a
> >     >     >     Template
> >     >     >     > that it's already created. As thi guide says it's
> >     necessary to
> >     >     >     select
> >     >     >     > in Allocation tab from Resource Allocation, Thin
> >     >     Provision. When
> >     >     >     I try
> >     >     >     > to do this and down the select field it doesn't
> >     appear this
> >     >     >     option, I
> >     >     >     > only can see Preallocated. I have oVirt engine 3.1. Can
> >     >     somebody
> >     >     >     give
> >     >     >     > some light why I haven't this option in my webadmin?
> >     >     >     >
> >     >     >     > Many thanks in avanced,
> >     >     >     >
> >     >     >     > Juanjo.
> >     >     >     >
> >     >     >     >
> >     >     >     > _______________________________________________
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> >     <mailto:Users at ovirt.org <mailto:Users at ovirt.org>>
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> >     <mailto:Users at ovirt.org <mailto:Users at ovirt.org>>>
> >     >     >     > http://lists.ovirt.org/mailman/listinfo/users
> >     >     >
> >     >     >
> >     >     >     --
> >     >     >     Dafna Ron
> >     >     >     _______________________________________________
> >     >     >     Users mailing list
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> >     <mailto:Users at ovirt.org <mailto:Users at ovirt.org>>
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> >     <mailto:Users at ovirt.org <mailto:Users at ovirt.org>>>
> >     >     >     http://lists.ovirt.org/mailman/listinfo/users
> >     >     >
> >     >     >
> >     >
> >     >
> >     >     --
> >     >     Dafna Ron
> >     >
> >     >
> >
> >
> >     --
> >     Dafna Ron
> >
> >
>
>
> --
> Dafna Ron
>
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