Method, device, and computer program product for rebuilding data
US11099954B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 17, 2019 |
| Grant date | Aug 24, 2021 |
| Priority date | — |
| Expiry date | Oct 22, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2201/82
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Techniques provide for rebuilding data. Such techniques involve: obtaining health status information related to a first disk of a storage system, the first disk being divided into a plurality of disk units, and the health status information indicating a failure of a first disk unit of the plurality of disk units; determining a data block stored in the first disk unit based on a mapping between data blocks for the storage system and storage locations; and rebuilding the data block into a second disk of the storage system when maintaining accessibility of other data blocks in other disk units of the first disk than the first disk unit. Accordingly, it is possible to improve the data rebuilding efficiency when a disk fails partly and to continue utilizing the storage space portion in the disk that is not failed, without making the disk be offline temporarily.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.