Synchronization of snapshots in a distributed storage system
US9912748B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 12, 2015 |
| Grant date | Mar 6, 2018 |
| Priority date | — |
| Expiry date | Nov 1, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L67/1097
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method includes storing data generated in a source node by sending write requests to multiple destination nodes. The destination nodes are requested to create snapshots of the data. The write requests are marked at the source node with marks that indicate to each destination node which of the write requests are pre-snapshot write requests that were issued before a snapshot request for a snapshot that the destination node is currently storing, and which of the write requests are post-snapshot write requests that were issued after the snapshot request for the snapshot that the destination node is currently storing. The snapshots are synchronized with one another at the destination nodes based on the marks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.