<div dir="ltr">hi, thanks for reply<br><br>I am investigating what is and how "thin virtualization" works<br><br>Do you know if HADOOP is indicated to work under "thin" environment ?<br>On Hadoop I will put large workloads and this thin virtualization utilizes more resources than exists (shareable environment)<br>
that is,<br>if I have a real physical necessity of 500gb for each hadoop host and my Thin Virtualization has 2TB on NFS, I can have only 4 virtual machines (500GB each), or less.<br><br>For this case I believe clone virtual machine is the right choice. But in my environment it takes 1h30m to build one cloned virtual machine.<br>
<br><br><br>Am I correct ?<br><br><br><br><div class="gmail_extra"> <br><br><div class="gmail_quote">On Thu, Apr 17, 2014 at 7:33 AM, Michal Skrivanek <span dir="ltr"><<a href="mailto:michal.skrivanek@redhat.com" target="_blank">michal.skrivanek@redhat.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div><br>
On Apr 16, 2014, at 16:41 , Tamer Lima <<a href="mailto:tamer.americo@gmail.com" target="_blank">tamer.americo@gmail.com</a>> wrote:<br>
<br>
><br>
><br>
> Hello,<br>
><br>
> I created VMs by two ways :<br>
><br>
> 1) on tab virtual machines > new vm > template (centos_65_64bits)<br>
> 1.1 configuration : I do not select stateless checkbox<br>
> 1.2 this process takes a 1h30 to create each machine.<br>
><br>
> 2) on tab pools > new vm > template (centos_65_64bits)<br>
> 2.1 default configuration : stateless<br>
> 2.2 Here I created 3 virtual machines at once<br>
> 2.3 this process takes only one minute<br>
><br>
> On the tab virtual machines I can see all virtual machines.<br>
> Pooled machines have different icon image<br>
> and description is different too:<br>
><br>
> machines generated from tab VM are described as clone/dependent<br>
> - clone is a phisical copy?<br>
> machines generated from tab POOL are described as thin/independent<br>
> - thin is a just a reference to template vm ? what is phisical? any configuration file?<br>
<br>
</div>yeah, sort of.<br>
just google thin provisioning in general:)<br>
<div><br>
<br>
><br>
><br>
> In practice, what is the difference between these machines ?<br>
><br>
><br>
><br>
><br>
> <a href="http://www.ovirt.org/Features/PrestartedVm" target="_blank">http://www.ovirt.org/Features/PrestartedVm</a><br>
> "Today there are 2 types of Vm pools:<br>
> • Manual - the Vm is supposed to be manually returned to the pool. In practice, this is not really entirely supported.<br>
> • Automatic - once the user shuts down the Vm - it returns to the pool (stateless)."<br>
><br>
> all vm created from pool are stateless ?<br>
<br>
</div>the automatic pool, yes<br>
<br>
Thanks,<br>
michal<br>
<br>
><br>
><br>
> thanks<br>
><br>
><br>
><br>
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<br>
</blockquote></div><br></div></div>