Live migration of partitions
US10764364B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 24, 2018 |
| Grant date | Sep 1, 2020 |
| Priority date | — |
| Expiry date | Jul 20, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L67/1031
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Live migration of partitions can be achieved using server-to-server communications to coordinate and control partition migration and rebuild a persistent state of the partition on a destination server while the partition is served on the source server. The live migration approach breaks the heavy dependency on the partition master by eliminating most of the server-to-master communications, delegating coordination and control of the migration to the source and destination servers. After the migration is initiated by the partition master, the source server sends in-memory cache entries indicating the persistent state of the partition to the destination server. Once transferred, the two servers can cooperate to complete the handover, which loads the partition on the destination server using the cache entries received from the source server. Once the source server offloads the partition, it can redirect traffic for the partition to the destination server by triggering an update to the partition map.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.