Efficient volume manager hot swapping
US8392915B2 · kind B2 · utility
30Cited by
2References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 19, 2008 |
| Grant date | Mar 5, 2013 |
| Priority date | — |
| Expiry date | May 9, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0665
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Methods of hot-swapping a logical volume manager (LVM) and updating an associated extent map are presented. Methods for migrating a virtual machine running an application using an LVM from one physical machine to another physical machine are also presented. The LVM can be used by a database application or other applications in a single-node or multi-node environment. The LVM is shut down, version numbers for each segment of its associated extent map are saved, and a new LVM is started. The new LVM's extent map is compared with the old extent map, and segments in the LVM which have changed are selectively updated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.