Fast data synchronization method in continuous data protection technology
A technology of continuous data protection and technology, which is applied in the direction of data error detection and response error generation, which can solve the problems of increasing complexity and achieve the effect of improving the efficiency of data synchronization
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[0032] The present invention will be described in further detail below with reference to the accompanying drawings.
[0033] A method for fast data synchronization in continuous data protection technology, including the following steps:
[0034] Step 1: Establish the correspondence between all the data blocks of the disk partition and the bitmap of the write operation status in the memory of the production device.
[0035] Such as figure 1 As shown, the write operation status bitmap is stored in the memory of the production device. Each flag bit in the write operation status bitmap corresponds to a data block in the disk partition that the production device needs to protect (the size of the data block can be defined by yourself, In this example, 32kbyte is used as a data block), that is, each data block in the disk partition has a one-to-one correspondence with each flag bit in the write operation status bitmap. In the initial state, all the flag bits in the bitmap of the write oper...
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