Efficient data volume replication for block-based storage
US9983825B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 31, 2017 |
| Grant date | May 29, 2018 |
| Priority date | — |
| Expiry date | Jul 31, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0683
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A block-based storage system may implement efficient replication for restoring a data volume from a reduced durability state. A storage node that is not replicating write requests for a data volume may determine that replication for the data volume is to be enabled. A peer storage node may be identified that maintains a stale replica of the data volume. One or more replication operations may be performed to update stale data chunks in the stale replica of the data volume with current data chunks without updating data chunks in the stale replica of the data volume that are current. Stale replicas that are no longer needed may be deleted according timeouts or the amount of stale data in the replica.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.