Dependency resolution for lazy snapshots in storage cluster with delta log based architecture
US11726663B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 13, 2021 |
| Grant date | Aug 15, 2023 |
| Priority date | — |
| Expiry date | Sep 20, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/067
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Techniques for providing dependency resolution for lazy snapshots in a storage cluster with a delta log-based architecture. The techniques include creating a dependency relationship between a parent metadata page and a child metadata page, receiving one or more new delta updates of the parent metadata page, and writing, to a metadata delta log, the new delta updates of the parent metadata page as specialized delta update entries that preserve or maintain the new delta update values and their corresponding original (old) delta update values. By preserving or maintaining both the new delta update values and the corresponding old delta update values of the parent metadata page in the metadata delta log, constraints pertaining to the order of de-staging the delta updates of the parent and child metadata pages can be reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.