Increasing reusability of and reducing storage resources required for virtual machine images

摘要

Aspects of the present disclosure relate to the creation of delta virtual machine (VM) images corresponding to changes in the state of a VM's virtual disk. A delta VM image includes metadata information corresponding to its virtual disk file as well as a virtual disk file of a parent VM image. The metadata information makes delta VM image uniquely identifiable such that they may be searched for and used for creating VMs.