using Virtual Center to clone a compact template to a new template, using the "compact" option sometimes does not work. I get a thick-prealocated disk instead of a thin-provisioned one. Using the console and cloning the vmdk file does work. Any ideas what's wrong?
To be a little bit more specific:
If the cloning to a compact templates works, depends on the specific template I'm cloning from. So if it works with a template, it will always work with that template and vice versa.
Most issues ive seen with Templates has been cured by converting to a VM and then back to Template again..
Or failing that, convert Template to VM then clone it, then convert the clone to new Template..
I've had lots of issues with templates. In fact I MUCH prefer to deploy inside the VM because it is a lot faster then deploying a template. You can provision a new VM in 2 minutes vs. 10+ on a deploy.
Converting templates to VMs and back did never help. What does work in some cases is to deploy a template to a VM and then clone it back to a template using the "Compact" option resutling in a template containing a thin provisioned disk.
The problem is, that you don't have the option to clone to a "Compact" disk if you clone VMs instead of templates. I only have problems getting "Compact" (thin-provisioned) disks.