Customer want us to have a mechanism to modify a template and have the guests started from that template recognize the changes at the next reboot. Currently this is not possible in RHEV, but available in Vmware/Citrix and etc. This will make system updates, patch deployment, deployment of applications in batch very easier for the admin. The requirement given by the customer is as below. "I create a VM at time t, from it I create a template. Out of this template, I create 200 VMs and provide it to my users. At t+1, I have got a patch + new applications to provide to my user. I would like to do a copy of my original template, start it and modify it. In an ideal world, I would like to say that at the next reboot of the VMs or at 5:00 AM, it should switch from the old template to my new template. I should not require to rebuild a new pool out of this new template." --https://bugzilla.redhat.com/show_bug.cgi?id=558995
The content of this bug is addressed with template versions, which is covered by Bug #1075492. Closing. *** This bug has been marked as a duplicate of bug 1075492 ***