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A data deletion method, device, electronic equipment and storage medium

A deletion method and data technology, applied in the field of data processing, can solve problems such as reducing the storage performance of HM-SMR hard disks

Active Publication Date: 2022-05-06
HANGZHOU HIKVISION SYST TECH
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  • Abstract
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Problems solved by technology

[0005] The purpose of the embodiment of the present invention is to provide a data deletion method, device, electronic equipment and storage medium, to solve the problem in the prior art that the storage performance of the HM-SMR hard disk is reduced due to the frequent movement of the magnetic head

Method used

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  • A data deletion method, device, electronic equipment and storage medium
  • A data deletion method, device, electronic equipment and storage medium
  • A data deletion method, device, electronic equipment and storage medium

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Embodiment approach

[0136] As an implementation manner of the embodiment of the present invention, the search module 304 includes:

[0137] The first determining unit is configured to determine, among the plurality of target object blocks, the first target object block with the earliest writing time and the latest target object block with the latest writing time when the number of the target object blocks is multiple. Two target object blocks;

[0138] The second determining unit is configured to determine a first starting position of the main index data corresponding to the first target object block in the main index area, and a first start position of the main index data corresponding to the second target object block in the main index area. the first termination position in the index area;

[0139] The third determining unit is configured to determine an area between the first start position and the first end position in the main index area corresponding to the data area as the target area. ...

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Abstract

An embodiment of the present invention provides a data deletion method, device electronic equipment, and a storage medium. The method includes: obtaining a time index of a data area to be processed; determining whether the time index of the data area overlaps with a predetermined time range; if There is overlap, from the data area, determine the target object block whose writing time is within the target time range; in the main index area corresponding to the data area, search for the target area corresponding to the target object block; Primary index data deletion in the target region. The embodiment of the present invention can solve the problem in the prior art that the storage performance of the HM-SMR hard disk is reduced due to frequent movement of the magnetic head.

Description

technical field [0001] The invention relates to the technical field of data processing, in particular to a data deletion method, device, electronic equipment and storage medium. Background technique [0002] In recent years, with the continuous development of video surveillance technology, the amount of video data that needs to be processed is increasing. For example, in the security industry, video data is collected in real time, and the collected video data has continuity on the time axis , and as time goes on, video data will grow infinitely, and this type of data is usually called streaming data. [0003] As a recently launched storage medium, shingled hard disk has the characteristics of high storage density, stable storage and low price, and is very suitable for use in the security industry. Specifically, it is very suitable for storing streaming data in the security industry. At present, HM-SMR (Host Managed-Shingled Magneting Recording, Host Managed-Shingled Magnet...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/06G06F16/22
CPCG06F3/064G06F3/0652
Inventor 林起芊叶敏林鹏王伟
Owner HANGZHOU HIKVISION SYST TECH
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