title: How do you rename a GCE persistent disk?
body: <p>This should be easy but ...</p>
  
  <p>I have been working on a Google Compute Engine persistent disk image that I'm calling <code>utilserver</code>, and basically now need to build it again from scratch, but I might need the original one to try a few things in case problems come up.  So I'd like to rename <code>utilserver</code> to <code>utilserver-backup</code> and then create a new <code>utilserver</code> that will hopefully end up being more correct.  However, under the web console for my project there's only a "Delete" button, no "Rename" button.  Neither does <code>gcutil</code> seem to have a rename command.  Ok, I tried creating a snapshot of <code>utilserver</code> and then from that a new persistent disk called <code>utilserver-backup</code>, but when I did that the new disk looked like a completely new image--none of my prior installation work was on there.  Any ideas here?</p>