Live snapshot of a virtual machine
US9733964B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 27, 2013 |
| Grant date | Aug 15, 2017 |
| Priority date | — |
| Expiry date | Jan 26, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2201/84
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The subject matter of this specification can be implemented in, among other things, a method including receiving a request to create a live snapshot of a state of a virtual machine at a reference point-in-time. The virtual machine can have a memory and an original disk file. The method further includes creating, at the reference point-in-time, an overlay disk file to copy data from the original disk file. Data modifications after the reference point-in-time are performed in the original disk file but not in the overlay disk file. The method also includes creating a memory snapshot at the reference point-in-time. The method includes providing the live snapshot corresponding to the reference point-in-time. The live snapshot includes the overlay disk file and the memory snapshot.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.