title: AWS spot instances/restarting more quickly
body: <p>I'm using AWS spot instances and want to get the same "stop/start/setup" speed as on-demand instances. With on-demand instances, the root EBS volume stays around, so once I install all the packages, subsequent start/setup is fast.</p>
  
  <p>However, for spot instances I get "Spot instances can not be stopped" (why not?). And I don't see a way to start a spot instance with an existing Root Volume.</p>
  
  <p>One partial work-around I found was to mount an existing secondary volume under "/data", install packages there, and remount that volume on spot instance restart. However, this is limiting because some packages like to be installed into '/', any suggestions?</p>