Transferring snapshot copy to object store with deduplication preservation and additional compression
US11687265B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 30, 2020 |
| Grant date | Jun 27, 2023 |
| Priority date | — |
| Expiry date | Aug 14, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/065
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Techniques are provided for incremental snapshot copy to an object store. A list of deallocated block numbers of primary storage of a computing device are identified. Entries for the list of deallocated block numbers are removed from a mapping metafile. A list of changed block numbers corresponding to changes between a current snapshot of the primary storage and a prior copied snapshot copied from the primary storage to the object store is determined. The mapping metafile is evaluated using the list of changed block numbers to identify a deduplicated set of changed block numbers without entries within the mapping metafile. An object, comprising data of the deduplicated set of changed block numbers, is transmitted to the object store for storage as a new copied snapshot.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.