Optimizing write IO bandwidth and latency in an active-active clustered system based on a single storage node having ownership of a storage object
US11144252B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 9, 2020 |
| Grant date | Oct 12, 2021 |
| Priority date | — |
| Expiry date | Jan 16, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L67/1097
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Techniques for optimizing write IO bandwidth and latency in an active-active clustered system using storage object affinity to a single node. The active-active clustered system can include at least a primary storage node and a secondary storage node that maintain their own journals. The respective journals are directly accessible to both storage nodes. The journals are synchronized for each page or entity of a storage object when a storage IO request is issued to a storage node to which the storage object does not have affinity. Such synchronization is performed in the framework of acquiring a lock on the entity of the storage object during internode communications. To facilitate recovery from a disaster, data loss, and/or data corruption, transaction IDs associated with storage IO operations are employed to facilitate identification of the most up-to-date reference or description information for a given data or metadata page of a storage object.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.