Erasure code storage and reconfiguration optimization method based on redirect-on-write
An optimization method and redirection technology, applied in the direction of response error generation, redundant code error detection, etc., can solve the problems of increased reconstruction time, reduced system reliability, increased write request response time, etc., and improved reliability. performance, ensuring mutual independence, optimizing the effect of refactoring performance and user response time
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[0040] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and exemplary embodiments. It should be understood that the exemplary embodiments described here are only used to explain the present invention, and are not intended to limit the applicable scope of the present invention.
[0041] Below at first explain and illustrate with regard to the technical terms of the present invention:
[0042] Write penalty: In the process of writing a data node, due to the change of the content of the data block in the data node, according to the encoding and storage method of the erasure code, the data block corresponding to the location of the check node will also change accordingly, bringing additional Checkpoint write operations. like figure 1 As shown in the (k+r, k) erasure code storage cluster disk diagram, the disk array contains...
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