Data caching method, storage control device and storage equipment

A storage device and data caching technology, applied in memory systems, electrical digital data processing, memory address/allocation/relocation, etc., can solve problems such as waste of storage resources, delay in data reading speed, and lack of cooperative operations
CN112214420APending Publication Date: 2021-01-12HUAWEI TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HUAWEI TECH CO LTD
Publication Date
2021-01-12

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Abstract

The invention discloses a data caching method applied to storage equipment, a control device of the storage equipment and the storage equipment. The storage equipment comprises a first cache (212) anda second cache (213). When the storage device monitors that a first data block is cached in the first cache (212) (S301), a first data block to be deleted is cached in the first cache (212) (S601), or the caching time of the first data block in the first cache (212) exceeds a threshold value (S801), obtaining feature information of the first data block, and then determining whether the first datablock is stored in the second cache (213) according to the feature information of the first data block; and if it is determined that the first data block is stored in the second cache (213) (S303, S603, S803), adjusting the level of elimination priority of the first data block in the second cache (213) (S304, S604, S804). By coordinating the data in the first cache (212) and the second cache (213) in the storage device, the response speed of the IO request is improved.
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Description

Technical field

[0001] The present invention relates to the field of data storage technology, in particular to data caching technology.Background technique

[0002] With the rapid development of technologies and applications such as big data, mobile internet, and cloud services, the demand for access to storage servers by application servers has also greatly increased. This requires speeding up the processing capacity of I / O requests for accessing storage servers to quickly Respond to users' access needs.

[0003] The prior art generally uses a caching method to speed up the processing capacity of I / O requests, that is, caches are set in both the application server and the storage server. The cache of the application server stores the hot data determined by the application server, and the cache of the storage server stores the data read from the hard disk.

[0004] When the application server receives an I / O request, it first accesses the data block in the cache of the application server. If it i...

Claims

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