Reconstructing in-memory indices in a distributed data storage system
US10452271B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 22, 2017 |
| Grant date | Oct 22, 2019 |
| Priority date | — |
| Expiry date | May 22, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/27
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Reconstructing in-memory data block indices in a distributed data storage system where data blocks are stored in extents and the extents are replicated across storage devices. In one aspect, based on a reboot of a storage device and a copy of an extent stored in the storage device being in an open state, appends for data blocks in the copy of the extent stored in the storage device are replayed to reconstruct an in-memory data block index for the copy of the extent. In another aspect, based on a reboot of a storage device and a copy of an extent being in a closed state, a data block index for the copy of the extent is retrieved from non-volatile storage of the storage device and the retrieved data block index stored in memory at the storage device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.