Processing method, device and equipment for writing bulk data in solid state disk and medium

Abstract

The invention discloses a processing method, device and equipment for writing bulk data in a solid state disk and a medium. The method comprises the following steps: large data write requests are screened from write requests sent by a host; the DM module is used for splitting to-be-written large data corresponding to the large data writing request into multiple pieces of small data and mounting the small data to a linked list; the DM module sends a write request to the LKM module, wherein the content of the write request comprises an LBA initial address of large data to be written and the total number of small data; the LKM module receives the write request, performs cache allocation to generate a plurality of write request results and returns the write request results to the DM module; the DM module retrieves the context content of each piece of small data from the mounted linked list by taking the small data as a unit according to a plurality of received request results and initiates a data migration request to the DMA module; and the DM module resources and the LKM module resources are released in response to completion of data migration of the DMA module. According to the scheme, the number of communication times between modules is reduced, the efficiency of large block writing is optimized, the writing delay is reduced, and the writing bandwidth is improved.

Description

technical field [0001] The invention relates to the field of storage technology, in particular to a method, device, equipment and medium for processing large-block data written in a solid-state hard disk. Background technique [0002] ZNS (abbreviation for Zoned Namespace) based on the NVME protocol solution, compared with the traditional SSD (Solid State Drive, solid state drive or solid state drive), has the characteristics of large write size and low cost. Generally, ZNSSSD only supports sequential writing, so before ZNS SSD is configured and used, it is necessary to obtain the configuration information of all zones inside the SSD, and then accurately determine the write pointer and status of each zone. For example, ZNS 128KB sequential writing generally needs to go through the process of unpacking, applying for write cache (buff), DMA (direct memory access unit) data movement, and writing completion. IPC (Inter Process Communication, which refers to SSD internal Message...

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Problems solved by technology

[0004] At present, the process of ZNS 128KB sequential writing is as follows: when the ZNS SSD firmware receives a 128KM write request, it first needs the DM module to unpack into 32 4KB pieces, and each 4KB sends a write request to the LKM module, and the LKM module returns the write cache (buff) address, the DM module sends a data move request to the DMA module, the DMA module completes the move, and then the DM module sends the 4KB writing completion to the LKM module, and finally the LKM module releases the buff, and this is repeated 32 times; it can be seen that the existing 128KB sequential write In the process, multiple write applications are required and repeated communication between modules makes writing inefficient and takes up a large bandwidth. Therefore, the existing large-block data writing process needs to be improved urgently.

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