Efficient chained post-copy virtual machine migration
US9652296B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 13, 2015 |
| Grant date | May 16, 2017 |
| Priority date | — |
| Expiry date | Nov 13, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2201/815
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A hypervisor receives, from a second host at a third host, at a second time after a first time, a first plurality pages. The first plurality of pages were copied at the first time, from a first host to the second host. The hypervisor receives a mapping at the third host, sent from the second host. The mapping indicates a first location of a second plurality of pages and a second location of a third plurality of pages. The hypervisor detects a page fault at the third host. The page fault is associated with a required page that is absent from the third host. Responsive to detecting this, the hypervisor queries the mapping, to determine a source location of the required page and identifies a source host for the source location. The hypervisor receives the required page, from the source host at the third host.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.