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
Stacked structure and stacked method for three-dimensional chip
Adhesive structure of optical device, adhesion method, and optical pickup device
Credit flow control scheme in a router with flexible link widths utilizing minimal storage
Externally gapped line arrester
Modulation of HSP47 expression
Magnetic circuit and speaker using same
Post-processing device and image forming system
  Randomly Featured Patents
Motion-based disabling of messaging on a wireless communications device
Intercalated superlattice compositions and related methods for modulating dielectric property
Strap exchanger for a strapping system
Electrophotographic apparatus for depositing developer only on the image area of the image bearing member
Method for manufacturing a nonvolatile memory transistor
Internet communication device and method for controlling noise thereof
Eyewear temple
Multiple module control store for use in a data processing system
Method of PWM driving a brushless motor with digitally stored voltage profiles with reduced losses
Deflection supply voltage feedback control in conjunction with frequency change