Low overhead fault tolerance through hybrid checkpointing and replay
US8499297B2 · kind B2 · utility
16Cited by
2References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 28, 2008 |
| Grant date | Jul 30, 2013 |
| Priority date | — |
| Expiry date | Jul 6, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/188
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A virtualized computer system provides fault tolerant operation of a primary virtual machine. In one embodiment, this system includes a backup computer system that stores a snapshot of the primary virtual machine and a log file containing non-deterministic events occurring in the instruction stream of the primary virtual machine. The primary virtual machine periodically updates the snapshot and the log file. Upon a failure of the primary virtual machine, the backup computer can instantiate a failover backup virtual machine by consuming the stored snapshot and log file.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.