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Data deletion method, device and computer-readable storage medium for storage device

A storage device and deletion method technology, which is applied in computing, electrical digital data processing, input/output process of data processing, etc., can solve the problems of increased burden of garbage collection process of storage devices, etc., and achieve the effect of solving the increased burden

Active Publication Date: 2019-03-15
YEESTOR MICROELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main purpose of the present invention is to provide a data deletion method and device for a storage device and a computer-readable storage medium, aiming to solve the problem of increasing the burden of the garbage collection process of the storage device

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  • Data deletion method, device and computer-readable storage medium for storage device
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  • Data deletion method, device and computer-readable storage medium for storage device

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Embodiment Construction

[0038] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0039] The main solution of the embodiment of the present invention is: when receiving a data deletion instruction, obtain the file configuration table corresponding to the data deletion instruction; obtain the cluster number corresponding to the data deletion instruction in the file configuration table, and obtain The absolute logical block address of the cluster number; obtaining a preset data information table, and setting the validity of data associated with the absolute logical block address to invalid in the data information table.

[0040] Since the existing USB storage device deletes files on the host side, in fact, the host just sets the cluster where the file data corresponding to the delete operation in the FAT table is located to 0, and the file data corresponding to the delete operation is still stored in ...

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Abstract

The invention discloses a data deletion method of a storage device, a device and a computer-readable storage medium. The method comprises the following steps: when a data deletion instruction is received, a file configuration table corresponding to the deletion data instruction is obtained; Obtaining a cluster number corresponding to the deletion data instruction in the file configuration table, and obtaining an absolute logical block address of the cluster number; Acquiring a preset data information table in which data validity associated with the absolute logical block address is set to invalid. As that invention can obtain the cluster number whose cluster value is zero in the file configuration table, and obtains the logical block address corresponding to the cluster number, Then, the data of the logical block address is set as invalid in the GC garbage collection algorithm table, and after the data is identified as invalid data, the garbage collection algorithm does not reclaim thestorage space of the data again, thereby solving the problem that the garbage collection process burden of the storage device is increased.

Description

technical field [0001] The invention relates to the field of USB storage devices, in particular to a data deletion method, device and computer-readable storage medium of the storage device. Background technique [0002] With the rapid development of computer hardware, removable storage devices are widely loved by consumers due to factors such as small size, easy to carry, large storage capacity, cheap price, and reliable performance. [0003] However, existing USB storage devices cannot perform data identification on the FAT file system. During the entire lifecycle of the storage device, invalid data cannot be identified and invalidated at the algorithm layer of the storage device. Therefore, although the existing USB storage device performs the operation of deleting files on the host side, in fact, the host only sets the cluster where the file data corresponding to the deletion operation in the FAT table is located to 0, and the file data corresponding to the deletion oper...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/06
CPCG06F3/0644G06F3/0652
Inventor 黄今吴大畏李晓强
Owner YEESTOR MICROELECTRONICS CO LTD