System and method for speed up data rebuild in a distributed storage system with local deduplication
US11474724B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 25, 2018 |
| Grant date | Oct 18, 2022 |
| Priority date | — |
| Expiry date | Apr 5, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/1024
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method includes obtaining a plurality of representations corresponding respectively to a plurality of blocks of data stored on a source node. A plurality of data pairs are sent to a destination node, where each data pair includes a logical address associated with a block of data from the plurality of blocks of data and the corresponding representation of the block of data. A determination is made whether the blocks of data associated with the respective logical addresses are duplicates of data stored on the destination node. In accordance with an affirmative determination, a reference to a physical address of the block of data stored on the destination node is stored. In accordance with a negative determination, an indication that the data corresponding to the respective logical address is not a duplicate is stored. The data indicated as not being a duplicate is written to the destination node.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.