Granular partial recall of deduplicated files
US10180943B2 · kind B2 · utility
0Cited by
8References
20Claims
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Key dates
| Filing date | Feb 28, 2013 |
| Grant date | Jan 15, 2019 |
| Priority date | — |
| Expiry date | Jul 20, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/1748
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The subject disclosure is directed towards partially recalling file ranges of deduplicated files based on tracking dirty (write modified) ranges (user writes) in a way that eliminates or minimizes reading and writing already-optimized adjacent data. The granularity of the ranges does not depend on any file-system granularity for tracking ranges. In one aspect, lazy flushing of tracking data that preserves data-integrity and crash-consistency is provided. In one aspect, also described is supporting granular partial recall on an open file while a data deduplication system is optimizing that file.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.