Resources Contact Us Home
Real time cloning of a virtual machine

Image Number 10 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
Tie down strap hook
Implantable medical devices including elongated conductor bodies that facilitate device and lead configuration variants
Antenna device and wireless communication apparatus
System and method for managing content on a network interface
System and method for transferring data in storage controllers
Controlling a video window position relative to a video camera position
  Randomly Featured Patents
Ink jet printer for reducing dot shift
Aircraft propeller with improved spinner assembly
Semiconductor device having shallow b-doped region and its manufacture
Surgical retractor holder
Interface seal for an aircraft
Stacket-up type heat exchanger for a gas boiler
Treatment for diabetes and obesity as well as method of screening compounds useful for such treatments
Fuel vapor control system with leak check
Coupling mechanism of socket wrench extension
Dispensing apparatus, dispensing method, and analyzer