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Path switching method and device

A path switching and physical link technology, applied in the field of path switching, can solve the problems of long time switching path, service stability and continuity impact of the server, etc.

Active Publication Date: 2019-09-06
MACROSAN TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, the switching path of the existing technology takes too long, which may have a significant impact on the stability and continuity of the business on the server.

Method used

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Embodiment Construction

[0045] In order to enable those skilled in the art to better understand the technical solutions in the embodiments of the present invention, and to make the above-mentioned purposes, features and advantages of the embodiments of the present invention more obvious and understandable, the following describes the existing technical solutions and the present invention in conjunction with the accompanying drawings. The technical solutions in the embodiments of the invention are described in further detail.

[0046] The connection relationship between the start port on the server and the target port on the controller can constitute multiple paths for the server to access the LUN.

[0047] see figure 1 , for LUN1, the service server can access LUN1 through four paths: P1-P3-P5-P9, P1-P3-P6-P11, P2-P4-P7-P10, and P2-P4-P8-P12.

[0048] Usually, for a specified LUN, the paths derived from one controller of a multi-controller storage device are optimized paths, and the paths derived fr...

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Abstract

The invention provides a path switching method and device which are applied to a multi-control storage device, the multi-control storage device comprises a first controller and a second controller, and the method comprises the steps that the first controller determines that a fault occurs; and the first controller disconnects the physical links corresponding to all the local target ports, so thatthe server reselects the path with the second controller to access the multi-control storage device. According to the technical scheme, the first controller determines that the first controller has afault and actively disconnects the physical links corresponding to all the local target ports, so that the server side senses that the physical links where the currently selected path is located are disconnected in time and are switched to the available path to access the multi-control storage device, the time consumed for switching the path is greatly shortened, and the influence on services on the server side due to abnormality of the controller is reduced.

Description

technical field [0001] The present application relates to the field of storage, and in particular to a method and device for path switching. Background technique [0002] In a SAN (Storage Area Network, storage area network) network, multiple controllers of a multi-controller storage device can usually access the SAN network through different ports, where a port on a controller may be called a target port (target port). The server (for example: a service server) can also access the SAN network through a plurality of different ports, wherein the port on the server can be called an initiator port (initiator port). [0003] The start port on the server and the target port on the controller can form various connection relationships. see figure 1 , is a schematic diagram of the architecture of a SAN network shown in this application, such as figure 1 As shown, there are two start ports on the server (business server), two target ports on controller 1, and two target ports on c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/24H04L12/26
CPCH04L41/0663H04L43/0817H04L41/0677
Inventor 吴鹏飞
Owner MACROSAN TECH