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Mirror image communication processing method

A technology of communication processing and mirroring, applied in the field of communication, can solve the problem of inapplicable mirror link applications, etc., and achieve the effects of improving the utilization rate of FC frames, improving performance, and improving reliability.

Inactive Publication Date: 2009-09-16
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0019] The disadvantage of the SCSI processing mechanism introduced in the above-mentioned FC is that it is not suitable for the application of the "point-to-point" topology of the above-mentioned mirror link
Because the faults of the mirroring link are mainly the mirroring link interruption and the fault of the mirroring controller, and these two faults are limited to the FC layer and have no direct connection with SCSI, such as the reset target device in the SCSI standard error handling (such as disk) and resetting the FC card are completely unnecessary for these two failures

Method used

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Embodiment Construction

[0055] The present invention provides a kind of image communication processing method, and the core of the present invention is: encapsulate image information in FC-2 (the 2-layer structure of the frame structure of Fiber Channel), transfer the encapsulated image between image controllers Mirror information.

[0056] The method described in this method includes two parts: a request delivery processing flow of the image initiator and a response processing flow of the image initiator.

[0057] The above two processing flows are described in detail below in conjunction with the accompanying drawings. The processing flow of the embodiment of the request delivery processing flow of the image initiator described in this method is as follows Image 6 shown, including the following steps:

[0058] Step 6-1. The mirrored initiator first checks whether the mirrored link fails, and if not, executes step 6-2; otherwise, when the number of mirrored links in the normal state is greater tha...

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Abstract

This invention provides a process method for mirror communication including: packaging mirror information in FC-2 to be transmitted among mirror controllers to increase the usability of FC frames and its performance of mirror communication.

Description

technical field [0001] The invention relates to the field of communication, in particular to a method for processing image communication. Background technique [0002] At present, the connection diagram of a typical storage array controller is as follows: figure 1 shown. The first controller and the second controller are connected through a mirror link, and when one of the controllers fails, the other controller will take over its business. [0003] exist figure 1 , the write data between the first controller and the second controller must always be consistent, that is, when the host writes data A to the first controller, when the first controller saves data A, The data A written by the host is also sent to the second controller through the mirror link from the first controller to the second controller. Only after the first controller receives the response of the data A returned by the second controller, the first controller continues to process the data A locally, and f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/02H04L12/46H04B10/08G06F11/16H04L29/06
Inventor 张巍孙凌翔
Owner HUAWEI TECH CO LTD