Invention Grant
- Patent Title: Non-disruptive failover of RDMA connection
- Patent Title (中): RDMA连接的无中断故障切换
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Application No.: US14134063Application Date: 2013-12-19
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Publication No.: US09537710B2Publication Date: 2017-01-03
- Inventor: Hari Shankar , Huadong Liu , Hua Li
- Applicant: NetApp Inc.
- Applicant Address: US CA Sunnyvale
- Assignee: NetApp, Inc.
- Current Assignee: NetApp, Inc.
- Current Assignee Address: US CA Sunnyvale
- Agency: LeClairRyan, a Professional Corporation
- Main IPC: G06F11/00
- IPC: G06F11/00 ; H04L12/24 ; G06F11/20

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.
Public/Granted literature
- US20140136880A1 NON-DISRUPTIVE FAILOVER OF RDMA CONNECTION Public/Granted day:2014-05-15
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