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
Cathode active material and lithium secondary battery comprising the same
Variants of a family 44 xyloglucanase
PVD coated tool
Capacity and coverage self-optimization method and device in a mobile network
Deceleration dependent shift control
Display screen with graphical user interface
UV exposure method for reducing residue in de-taping process
  Randomly Featured Patents
Identifying an origin of a DOCSIS upstream burst
Adjustable spindle liner tube or filler tube
System, method and article of manufacture for a beam splitting acousto-optical modulator
Hitch for trailers
Molecules of the PYRIN/NBS/LRR protein family and uses thereof
Well riser lateral restraint and installation system for offshore platform
Polymer foams containing blocking agents
Fixation and stabilization of metals in contaminated materials
Electronic sphygmomanometer
Controlled offer redemption system