Efficient volume manager hot swapping
US8701110B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 9, 2012 |
| Grant date | Apr 15, 2014 |
| Priority date | — |
| Expiry date | Dec 9, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0665
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method of updating an extent map is described. The method includes providing in a memory an instance of a first version of the extent map, wherein the instance is referenced by an application. The extent map include entries. The method further includes storing, at each extent map entry, an offset from the beginning of a physical drive which is identified within said each extent map entry, providing a second version of the extent map, comparing the first version of the extent map with the second version of the extent map, in response to the comparing, determining that is at least on segment in the second version of the extent map that is different from a corresponding at least one segment in the first version of the extent map.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.