I/O stack request response method and system, and I/O stack request response control method and system

Abstract

The present application discloses an I / O stack request response method, system, device, computer-readable storage medium, and I / O stack request response control method and system, including: using the request type recorded in the request instruction to search in the database To the responder corresponding to itself for responding to the request type; sending request information to the responder according to the request type; receiving the response result fed back by the responder; judging whether the response results are all successful; if so, judging whether there is a next level The requester; if there is, notify the requester at the next level to respond to the request; this application establishes the corresponding relationship between the request type, the responder and the requester in the database, and establishes that the requester requests the responder to respond to the request. , forming a request-response method of the observer mode, using the database to establish a corresponding relationship, so that the corresponding relationship can be adjusted. By adding, modifying or deleting in the database, the response process of a request can be adjusted to make the request setting more flexible.

Description

technical field [0001] The present invention relates to the field of storage technology, in particular to an I / O stack request response method, system, device, computer-readable storage medium, and I / O stack request response control method and system. Background technique [0002] Each layer in the I / O stack will perform some special processing (such as splitting, merging, etc.) on the I / O submitted by the upper layer, and then submit it to the next layer until it is written to the disk. Since the business between each layer is separated from each other, when a scenario occurs that requires each layer to respond to a request in turn, for example, each layer needs to stop processing business in turn, or the layer that needs to have cached data sequentially To download, you need to establish a request response method that can cover the entire I / O stack, and send requests to make each layer respond in turn. [0003] In the prior art, in order to realize the above-mentioned req...

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Problems solved by technology

[0003] In the prior art, in order to realize the above-mentioned request requirements, the code set has a strong code intrusion, that is, when a component is introduced, the original code or design needs to be changed to adapt to the new component, resulting in Once the response method is changed, a lot of code needs to be rewritten, the usage scenarios are limited, it is inflexible, and the usage efficiency is reduced

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