Invention Grant
- Patent Title: Handling path issues for storage copy services
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Application No.: US16417883Application Date: 2019-05-21
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Publication No.: US10999208B2Publication Date: 2021-05-04
- Inventor: Xue Qiang Zhou
- Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
- Applicant Address: US NY Armonk
- Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
- Current Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
- Current Assignee Address: US NY Armonk
- Agent L. Jeffrey Kelly
- Main IPC: G06F13/20
- IPC: G06F13/20 ; H04L12/801 ; H04L12/26 ; H04L12/727 ; H04L12/707 ; H04L12/721

Abstract:
A method for determining path health to conduct a plurality of Input-Output (IO) operations along a healthy path in a network is provided. The present invention may include receiving an IO request from a user and sending the received IO request on a first path. The present invention may include determining a first IO response has exceeded a threshold time on the first path. The present invention may include determining the first path has degraded based on the exceeded threshold time. The present invention may include generating a duplicate IO request and sending on a second path. The present invention may include receiving the duplicated IO response before receiving the original IO response. The present invention may include determining a health state associated with the slower path. The present invention may include refreshing a path state machine based on the determined health state associated with the slow path.
Public/Granted literature
- US20190273692A1 HANDLING PATH ISSUES FOR STORAGE COPY SERVICES Public/Granted day:2019-09-05
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