RAPID SUSPEND/RESUME FOR VIRTUAL MACHINES VIA RESOURCE SHARING

摘要

Examples quickly suspend and resume virtual desktops on demand or on schedule. Virtual desktops, or desktops as a service, are provided to users, where the virtual desktop is a forked VM, cloned VM, or otherwise at least a partial duplicate of an existing VM. The virtual desktop points to existing memory maintained by the existing VM, and the virtual desktop only writes to memory the pages that the virtual desktop creates or modifies.

主权项

1. A method for rapidly suspending a virtual machine (VM), said method comprising:
receiving a request to suspend a VM executing on a host, the VM having a plurality of memory blocks at least a portion of which are shared with another VM, wherein the another VM is resident in the host; identifying memory blocks, from the plurality of memory blocks, that are not shared with the another VM; and responsive to receiving the request, transferring only the identified memory blocks to storage.