Non-disruptive failover of RDMA connection
US8627136B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 27, 2010 |
| Grant date | Jan 7, 2014 |
| Priority date | — |
| Expiry date | Feb 12, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/2097
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A novel RDMA connection failover technique that minimizes disruption to upper subsystem modules (executed on a computer node), which create requests for data transfer. A new failover virtual layer performs failover of an RDMA connection in error so that the upper subsystem that created a request does not have knowledge of an error (which is recoverable in software and hardware), or of a failure on the RDMA connection due to the error. Since the upper subsystem does not have knowledge of a failure on the RDMA connection or of a performed failover of the RDMA connection, the upper subsystem continues providing requests to the failover virtual layer without interruption, thereby minimizing downtime of the data transfer activity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.