Memory read and write control method and corresponding memory

Abstract

Described are a read-write control method for memory, and a corresponding memory and server. The method comprises: dividing a storage resource of the memory by taking a block as a unit; to write data, combining the data to be written into a data block, writing the data block in a free segment of the memory, and recording an identifier and a corresponding index of the data, the index of the written data is an offset indicating a memory location of the data in the memory; to read data, reading the data from the offset of the memory according to an identifier and a index of the data to be read. When read-write control is performed on the memory, the number of the times that the I / O operation is performed on the memory is reduced during data writing, thereby improving the efficiency of the write operation on the memory.

Description

technical field [0001] The invention relates to the technical field of data storage, in particular to a storage read-write control method and a corresponding storage and server. Background technique [0002] In current data storage technologies, storage resources are usually divided in units of blocks (Blocks) in the memory. That is to say: the memory is divided into multiple areas according to a fixed size, and each area is called a block. There are two types of blocks in the existing memory: one type of block is called basic block, which is used for hash (Hash) calculation and positioning to facilitate data positioning; the other type of block is called overflow block, which is used when the basic block is not enough When used, store the overflow data. [0003] In the prior art, data is stored in the memory, and then the key of the data (Key) is used for Hash calculation and then the modulo is obtained to obtain a block offset of the memory, and the block at the offset o...

AI Technical Summary

Problems solved by technology

[0007] When writing data, at least one input / output (I / O) operation needs to be performed on the memory every time a data is written, and it needs to be read once when there is data in the original block, so as to merge the old data writing, which will cause more I / O operations. / O operation

Therefore, the number of I / O operations when writing data to the memory in the prior art is relatively large, and the write operation efficiency of the memory is very poor.

The prior art is not well supported, especially for solid-state disks (SSDs, solid state disks), whose lifespan is limited by the number of erases, and random writes have an impact on performance and lifespan, resulting in too much I / O when writing data. The / O operation not only leads to poor write operation efficiency of SSD, but also seriously affects the life of SSD

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