Hi,<br><br>I am trying to figure out the technology that openstack uses when multiple VM's having the<b> same </b>base image (OS) are provisioned on a physical server.<br>Does it use as many copy as the number of VM's or does it use the same base image and then copy on write.<br>
<br>I need to understand the complete details. Can anybody share some details or point me to some place where I can find the details.<br><br>One link I found was <a href="http://www.linux-kvm.com/content/how-you-can-use-qemukvm-base-images-be-more-productive-part-1">http://www.linux-kvm.com/content/how-you-can-use-qemukvm-base-images-be-more-productive-part-1</a><br>
but I want to know more details about how it is implemented and what are the performance issues etc.<br><br>Thanks,<br>Gaurab<br>