A method and device for optimizing garbage collection based on storage array data access

Abstract

The present application discloses a method and device for optimizing garbage collection based on storage array data access. The method includes: classifying and discriminating a received data access request according to a request source and a preset data hot and cold classification algorithm, and obtaining corresponding classification information ; Call the cache queue algorithm to cache and judge the data access request according to the classification information, so as to be added to the target cache queue of the corresponding classification; if the data to be accessed in the target cache queue reaches the preset standard threshold, the data to be accessed will be accessed according to the address mapping table. Data is written to the corresponding target node in stripe units; if there is no writable storage space in the storage array or the blank nodes in the work queue are less than the preset number, a garbage collection that delays the deletion of invalid data is used. mechanism for data recovery. By implementing the present application, the problem of write amplification of the storage array and the serious IO problem caused in the prior art can be solved.

Description

technical field [0001] The present application relates to the technical field of solid-state disk storage, and in particular, to a method and device for optimizing garbage collection based on storage array data access. Background technique [0002] Solid-state disk storage arrays (hereinafter referred to as solid-state disk arrays) as high-performance redundant arrays have been widely used in today's era. Compared with the direct use of multiple disks, the solid-state disk array can effectively improve its performance. The use of solid-state disks to form a redundant array will theoretically bring a multiplicative performance improvement. However, due to the limitations of the era proposed by the redundant array technology, its working characteristics are more suitable for mechanical hard disks. Because solid-state drives are compatible with traditional mechanical hard drives in interface and operation, they can be directly organized according to the traditional array schem...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the shortcomings of the above existing technologies, the purpose of this application is to provide a garbage collection optimization method and device based on storage array data access, which can solve the storage array write amplification problem and cause serious IO problems in the prior art Wait

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