Method for saving virtual machine state to a checkpoint file
US9053064B2 · kind B2 · utility
5Cited by
10References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 10, 2012 |
| Grant date | Jun 9, 2015 |
| Priority date | — |
| Expiry date | May 31, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/1438
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A process for lazy checkpointing a virtual machine is enhanced to reduce the number of read/write accesses to the checkpoint file and thereby speed up the checkpointing process. The process for saving a state of a virtual machine running in a physical machine to a checkpoint file maintained in persistent storage includes the steps of copying contents of a block of memory pages, which may be compressed, into a staging buffer, determining after the copying if the buffer is full, and upon determining that the buffer is full, saving the buffer contents in a storage block of the checkpoint file.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.