Resources Contact Us Home
Real time cloning of a virtual machine

Image Number 4 for United States Patent #8151263.

Method and systems for real-time cloning of a virtual machine are described. A virtual machine is running and a clone of the virtual machine is created while the virtual machine continues to run. In one embodiment, the creation of the clone further comprises quiesceing the virtual machine, taking a snapshot S1 (excluding main memory) of the state of the virtual machine, and creating a copy S2 of the snapshot S1. The original VM continues execution off the snapshot S1. The cloned VM restores from snapshot S2. In another embodiment, the cloning of the virtual machine further comprises instructing a vmkernel associated with the virtual machine to mark all pages of main memory of the virtual machine as copy-on-write (COW). The unique ID corresponding to the main memory is provided by the vmkernel and an association between the unique ID and the main memory is made upon restoration of the clone.

  Recently Added Patents
Image forming apparatus and method of translating virtual memory address into physical memory address
Method for production of a thermoelectric apparatus
Data scrambling in memory devices
Generating a network map
Transferases and oxidoreductases, nucleic acids encoding them and methods for making and using them
Efficiently emulating computer architecture condition code settings without executing branch instructions
  Randomly Featured Patents
Augmented reality system for a dental laboratory
Sealed sewage ejector assembly
Liquid crystal display device and method of driving the same
Process for producing leaves for leaf seal
Silhouette lightpipe illumination for vehicle instrumentation
Broadcast management system
Vehicle having auxiliary drive mechanism
Alignment layer for liquid crystal devices and method of forming
Tire deflation device
Filter device for a hydraulic system