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
Health monitoring of applications in a guest partition
Regenerative braking control to mitigate powertrain oscillation
Position pointer, variable capacitor and inputting apparatus
Memory system with data line switching scheme
Parallel active optical cable
Imidazole-5-carboxylic acid derivatives, the preparation method therefor and the uses thereof
  Randomly Featured Patents
Event participation
Composite firearm barrel reinforcement
System and method for distributed index searching of electronic content
Coded information for inventorying goods
Production of crispy wheat-based snacks having surface bubbles
Semiconductor memory device
Electrical connector for conveying an electrical signal from a device to an organ of a human or animal body
Field weakening induction drive