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A method and device for path selection

A path selection and write request technology, applied in the field of data processing, can solve problems such as not being able to meet the performance requirements of application servers

Active Publication Date: 2021-01-12
INSPUR SUZHOU INTELLIGENT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] However, the above path selection measurement cannot take into account the performance requirements of the application server, the maximum utilization of cache resources on the storage server side, and the minimum consumption of CPU resources.

Method used

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  • A method and device for path selection
  • A method and device for path selection
  • A method and device for path selection

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Embodiment Construction

[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0040] The MPIO driver running on the application server is responsible for selecting a path from multiple paths and sending the IO request to the storage server. The present invention realizes new path selection strategy by the improved MPIO driver, and the specific implementation is described as follows:

[0041] Please refer to the attached image 3 , image 3 A schematic flow diagram of a path selection method provided in an embodiment of the present inv...

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Abstract

The embodiment of the invention discloses a path selecting method and device. A novel path selecting strategy is obtained in an MPIO drive program, IO request read or write operations are distinguished, all the read operations and small write operations are sent through a target port set with the high performance, large write operations are sent through a target port set with the low performance, and the path selection strategy with the load balance is obtained inside the selected target port set. The novel path selection strategy simultaneously considers the performance requirement of an application server, the maximum utilization of buffer resources on the storage server side and the minimum consumption of CPU resources.

Description

technical field [0001] The invention relates to the technical field of data processing, in particular to a path selection method and device. Background technique [0002] In an enterprise-level application system, an application server for processing service requests and a storage system are connected to each other through a storage network SAN (Storage Area Network, storage area network). In order to avoid a single point of failure and improve system reliability and IO (Input / Output, input / output) throughput, MPIO (Multiple Path IO, multipath IO) access is usually used between application servers and storage devices. Such as figure 1 As shown, the application server A is connected to a storage device with dual controllers through two SAN switches, and a total of four physical paths from the application server A to the storage device are realized. With the help of the multi-path disk driver, the application server A can initiate an IO request to the storage device through ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F9/50G06F13/12
CPCG06F9/505G06F13/128
Inventor 耿芳忠
Owner INSPUR SUZHOU INTELLIGENT TECH CO LTD
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