Method and device for enhancing random data read-write performance in storage system

Abstract

The invention discloses a method and a device for enhancing random data read-write performance in a storage system. The method comprises the following steps: receiving random data to be written into a storage cache, and obtaining the detailed information of each piece of random data, wherein the detailed information comprises the data size information of each piece of random data; according to the detailed information of the random data, integrating multiple pieces of random data in a writing sequence to form long data of a preset size; and writing the long data into a bottom-layer disk in one time, and writing metadata corresponding to the long data into a solid state disk, wherein the size of the long data is the same with the stripe depth of the bottom-layer disk. Obviously, the random data written into the storage cache is collated, the random data of different block sizes is synthesized into continuous data of a fixed size, the metadata is written into the solid state disk, meanwhile, the collated long data is written into the disk, so that the reading performance of the random data is improved, and in addition, data space is saved since the size of the long data is equal to the stripe depth of the bottom-layer disk.

Description

technical field [0001] The invention relates to the field of storage technology, and more specifically, to a method and device for enhancing random data read and write performance in a storage system. Background technique [0002] The new IT development trend is posing new challenges to storage systems. The increase in the use of business analysis and data warehousing, the vigorous promotion of big data, server and desktop virtualization, and the rapid growth of unstructured data not only require huge storage capacity, but more importantly, storage performance. Due to the unstructured random Reading and writing data poses a great challenge to the performance of the storage system. In the current traditional storage, when random data is written into the storage system cache, the storage system will directly flush the written data to the disk within a certain time interval without any processing during this process. At this time, the storage system will not only cause a wast...

AI Technical Summary

Problems solved by technology

At this time, the storage system will not only cause a waste of space, but also due to the discontinuity of random data and the difference in block size, the disk will constantly change the track to read and write data, which will seriously affect the storage performance.

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