Creating and Managing Virtual Machines - Getting Started with Red Hat Enterprise Virtualization - page 86

To clone a RHEL virtual machine from a template, have a look at the following steps:
1. Navigate to the Virtual Machines tab and click on New Server .
2. Under the General tab of the virtual machine creation windows, select the newly
created template from the drop-down menu under Based on Template .
3. Enter a name with an appropriate description for your new virtual machine. The
rest of the values will be inherited from the template, and optionally, you can also
change them.
4. You can also change the storage allocation policy of your new virtual machine by
clicking on Show Advanced Options . Move to the Resource Allocation tab and
you will see that the Storage Allocation field will get enabled to choose the type
of provisioning and storage allocation policy. If you set Provisioning as Thin , the
virtual machine will depend upon the template it's created from, and it won't al-
low you to remove the template unless and until all the virtual machines created
from the template are removed from the cluster.
A clone does not depend on the template it was created from after it has been cre-
ated. So, it's recommended that you choose Clone as the option for more flexibil-
ity, Storage Allocation Policy to Preallocated for the server and high I/O intens-
ive workloads, and Provisioning as Thin for desktop workloads.
5. Retain all other default settings and click on OK to create the virtual machine.
Cloning a virtual machine might take some time, and during this time the new vir-
tual machine will have an Image Locked status before moving to the Down state.
Finally, the virtual machine gets displayed in the virtual machines' list, and you
can power on to set up the basic network setting to host your application.