Method for rebuilding data of magnetic disk array
A disk array and data reconstruction technology, which is applied in the direction of redundant code error detection and response error generation, can solve the problems that affect the read and write performance and reliability of the storage system, and the data reconstruction method takes a long time, etc.
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[0052] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0053] figure 1 It is a schematic diagram of the relationship between the steps of the present invention: when a member disk in the disk array fails, take out the failed disk, add a new replacement disk, enter the rebuilding step and the request processing step of the rebuilding stage at the same time, and enter the data recovery step and the data recovery step after the rebuilding is completed. Request processing steps in the recycling phase until recycling is complete.
[0054] like figure 2 As shown, in the redirection data log table, each log consists of 4 data items; each data item is the block offset address D of the disk array in the reconstruction of the redirected data, and the redirected data on the proxy disk array. The block offset address S, the length L of the redirected data, and the flag bit F. The flag bit identifies whether the redirected...
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