Upgrading a guest operating system of an active virtual machine
US8458392B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 22, 2009 |
| Grant date | Jun 4, 2013 |
| Priority date | — |
| Expiry date | Oct 7, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F8/65
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method and device for upgrading a guest operating system (OS) of an active Virtual Machine (VM). The method includes: replicating the active VM to generate a backup VM; upgrading a guest OS of the backup VM; merging changes to be made to a virtual disk image file during running of the active VM and changes to be made to the virtual disk image file during the upgrading; pausing the backup VM; migrating an active process of a Java application program running in the active VM into the backup VM to generate a backup process; migrating resources occupied by the active process of the Java application program into the backup VM such that the backup process occupies the same resources; and resuming running of the backup VM. The device includes: a replicating unit; an upgrading unit; a merging unit; a migrating unit; and a control unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.