WO2020077534A1 - Disk management method, disk management apparatus, and electronic device - Google Patents

Abstract

Disclosed are a disk management method, a disk management apparatus, an electronic device, and a computer readable storage medium. The disk management method comprises: equally dividing a disk into more than one data block, wherein a capacity of the data blocks is obtained by calculation according to a preset formula; scanning usage information of the data blocks of the disk; storing the usage information of the data blocks obtained by scanning into a preset first data block; and when a disk system is started, reading the disk by means of the first data block. By means of the solution of the present application, the reading and writing performance of the disk can be improved to a certain extent.

Description

Disk management method, disk management device and electronic equipment Technical field

The present application belongs to the technical field of vehicle-mounted equipment, and particularly relates to a disk management method, a disk management apparatus, electronic equipment, and a computer-readable storage medium.

Background technique

Vehicle-mounted devices usually operate under harsh conditions such as unstable voltage, abnormal power failure, high temperature, and vibration. At present, ordinary disks often suffer from partial data damage under such harsh conditions.

technical problem

Standard storage management systems used for ordinary disks, such as FAT32, NTFS, EXT2, etc., usually set the minimum storage unit to be relatively small. After repeated deletion and writing of data, a large amount of disk fragmentation will occur, resulting in disk Read and write performance drops.

Technical solution

In view of this, the present application provides a disk management method, a disk management device, an electronic device, and a computer-readable storage medium, which can improve disk read and write performance to a certain extent.

The first aspect of the present application provides a disk management method, including:

Divide the disk into more than one data block, where the capacity of the above data block is calculated by a preset formula;

Scan the usage information of each data block of the above disk;

Store the usage information of each data block obtained by scanning in a preset first data block;

When the disk system is started, the disk is read through the first data block.

The second aspect of the present application provides a disk management device, including:

The dividing unit is used to divide the disk into more than one data block, wherein the capacity of the above data block is calculated by a preset formula;

The scanning unit is used to scan the usage information of each data block of the disk;

A storage unit, configured to store usage information of each data block obtained by scanning in a preset first data block;

The reading unit is configured to read the disk through the first data block when the disk system is started.

A third aspect of the present application provides an electronic device. The electronic device includes a memory, a processor, and a computer program stored in the memory and executable on the processor. The processor executes the computer program as described above. The steps of the method of the first aspect.

A fourth aspect of the present application provides a computer-readable storage medium. The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the method of the first aspect described above are implemented.

A fifth aspect of the present application provides a computer program product. The computer program product includes a computer program. When the computer program is executed by one or more processors, the steps of the method according to the first aspect described above are implemented.

Beneficial effect

It can be seen from the above that through this application scheme, the disk is first divided into more than one data block, wherein the capacity of the above data block is calculated by a preset formula, and then the usage information of each data block of the above disk is scanned and the The usage information of each data block obtained by scanning is stored in a preset first data block, and when the disk system is started, the disk is read through the first data block. In the solution of the present application, the usage information of each data block in the disk is stored in a specific data block, so that when it is necessary to read and write the disk, the specific data block can be used to quickly locate and improve the disk read and write to a certain extent performance.

BRIEF DESCRIPTION

In order to more clearly explain the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only for the application In some embodiments, for those of ordinary skill in the art, without paying creative labor, other drawings may be obtained based on these drawings.

FIG. 1 is an implementation flowchart of a disk management method provided by an embodiment of the present application;

2 is another implementation flowchart of a disk management method provided by an embodiment of the present application;

3 is a structural block diagram of a disk management device provided by an embodiment of the present application;

4 is a structural block diagram of an electronic device provided by an embodiment of the present application.

Embodiments of the invention

In the following description, for the purpose of illustration rather than limitation, specific details such as specific system structure and technology are proposed to thoroughly understand the embodiments of the present application. However, those skilled in the art should understand that the present application can also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary details.

In order to explain the above technical solutions of the present application, the following will be described with specific embodiments.

Example 1

The following describes a disk management method provided by an embodiment of the present application. Referring to FIG. 1, the disk management method in the embodiment of the present application includes:

In step 101, the disk is divided into more than one data block;

In the embodiment of the present application, the capacity of the data block cannot be too small. If it is too small, the data block will be allocated more frequently during recording, and the data dispersion will be large, which will affect the read and write efficiency of the disk; the data block The capacity cannot be too large, because the smallest allocation unit is the size of the data block, so too much data block capacity is easy to cause waste of space; at the same time, in order not to let the disk usage information be recorded in multiple data blocks scattered, avoid adding program logic Complexity, the total number of data blocks on the disk cannot exceed the size that one data block can record. Based on this, the size of the data block is set to not less than 4 megabytes, and the size of the data block is increased by 4 megabytes, that is, the data block size is an integer multiple of 4 megabytes. Specifically, the capacity of the above-mentioned data block is calculated by a preset formula, where it is set that recording the usage information of one data block requires 32 bytes, then the above-mentioned preset formula is:

(4b × 1024 × 1024) ÷ 32 × (4b × 1024 × 1024) ≥ (a × 1024 × 1024)

Among them, the total capacity of the disk is a trillion, the capacity of the one data block is b times 4 trillion, that is, the capacity of the data block is 4b trillion, according to the above preset formula, find the minimum b value that satisfies the above formula, Obtain the specific value of the above data block capacity of 4b trillion. It should be noted that b is a positive integer.

In step 102, scan the usage information of each data block of the disk;

In the embodiment of the present application, in the embodiment of the present application, the above usage information includes but is not limited to: data block attribution stamp, data block location, start time of video file in the data block, end time of video file in the data block, data Block type and data block parity, wherein the data block attribution stamp indicates the complete video file to which the data block belongs. For example, a video file File1 has a video time span of 18: 00-18: 05. Because the data is too large, the above-mentioned video file File1 needs to be stored together through two data blocks, data block 1 and data block 2, then the above data The data block attribution stamps of block 1 and data block 2 indicate that the two belong to the above-mentioned video file File1; the above-mentioned data block 1 stores the video content in the video file File1 with a time span of 18: 00-18: 03. Data block 2 stores the video content in the video file File1 with a time span of 18: 03-18: 05. For the above data block 1, the start time of the video file in the data block is 18:00 and the data block The end time of the internal video file is 18:03; for the above data block 2, the start time of the video file in the data block is 18:03, and the end time of the video file in the data block is 18:05; the above video block type indication The status of data blocks, including idle data blocks, recording (backup) data blocks, and video data blocks; the location of the above data blocks is specifically expressed by the internal number of the video file, that is, the visual number can be determined by the internal number of the video file. Location of the file data blocks; said data block check bits for the value to determine whether the data stored in the data block legitimate. The above-mentioned usage information together constitute a usage structure of a data block, occupying 32 bytes. For idle data blocks and video data blocks, the first 32 bytes of the data block store the usage information of the data block.

In step 103, the usage information of each data block obtained by scanning is stored in a preset first data block;

In the embodiment of the present application, in the embodiment of the present application, the data block at a specific location of the disk is used as the first data block, and the first data block is dedicated to storing usage information of each data block, that is, the The data block type of a data block is a recording data block, where the above-mentioned specified location may be the first data block in the disk, or may be another location specified by the user, and the above-mentioned specific location is not limited here. After a full disk scan is performed on the disk, the usage information of each data block obtained by the scan is stored in the first data block.

In step 104, when the disk system is started, the disk is read through the first data block.

In the embodiment of the present application, under normal circumstances, during the disk system, the above-mentioned disks are globally scanned to obtain the disk usage status, which lays the foundation for subsequent read and write operations; however, since each time it needs to be rescanned, it A certain amount of time will be wasted; in order to realize the quick start of the disk and understand the usage of the disk in time, the usage information of each data block of the disk has been stored in the first data block in step 103, so when the disk is read, You only need to read the first data block to quickly know the disk usage.

Specifically, the usage information of each data block recorded in the first data block corresponds to the address of the data block, for example, the usage information of the first data block in the first data block corresponds to the disk The usage information of the first data block, the usage information of the second data block in the first data block corresponds to the usage information of the second data block in the disk, so that there is no need to establish an additional index relationship, The usage information of each data block stored in the first data block is mapped into an actual storage unit (ie, data block).

As can be seen from the above, in the embodiment of the present application, the usage information of each data block in the disk is stored in a specific data block, so that when it is necessary to read and write to the disk, the specific data block can be quickly positioned, and to a certain extent Improve disk read and write performance.

It should be understood that the size of the sequence numbers of the steps in the above embodiments does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

Example 2

Based on Embodiment 1, Embodiment 2 of this application provides another disk management method. The following describes another disk management method provided in Embodiment 2 of the present application. Referring to FIG. 2, the disk management method in Embodiment 2 of the present application includes:

In step 201, the disk is divided into more than one data block;

In step 202, scan the usage information of each data block of the disk;

In step 203, the usage information of each data block obtained by scanning is stored in a preset first data block;

In the embodiments of the present application, in the embodiments of the present application, the above steps 201, 202, and 203 are the same as or similar to the above steps 101, 102, and 103, respectively. For details, please refer to the related descriptions of the above steps 101, 102, and 103. No longer.

In step 204, the first data block is backed up to a preset second data block, so that the first data block and the second data block are mutually backed up;

In the embodiment of the present application, due to the bad environment of the vehicle, sudden power failure or vibration often causes the data written by the magnetic head to be abnormal, resulting in a failure of the corresponding position of the disk, and may even affect the adjacent position. Therefore, in order to When the block is damaged, the purpose of fast recovery can also be achieved. The data stored in the first data block can be backed up to the preset second data block, so that even if the first data block is damaged, the data can be quickly restore. The positions of the second data block and the first data block are separated by at least a preset distance, so as to avoid that the first data block and the second data block are simultaneously damaged. In order to find the first data block and the second data block simply and quickly, so as to quickly obtain the usage status of the entire disk, the first data block and the second data block can be allocated to a fixed location on the disk, such as One data block block is set as the first data block, and the 401st data block of the disk is set as the second data block. The distance between the first data block and the second data block is 400 data blocks, and the distance is an empirical value. , It is physically separated by several tracks, which can effectively prevent the two from being damaged at the same time. Of course, you can also set the data block at other locations specified by the user as the first data block and the second data block, which is not limited here; It is explained that, in one disk, only one first data block and one second data block need to be set. Specifically, the data block type of the second data block is a backup data block.

In step 205, when the disk system is started, it is detected whether the first data block is damaged, if yes, step 207 is performed, if not, step 106 is performed;

In step 206, read the disk through the first data block;

In step 207, the disk is read through the second data block.

In the embodiment of the present application, since the first data block and the second data block both record the usage information of the data blocks of the entire disk, when the disk starts, as long as the two data blocks are not damaged, no matter which one is read One data block can accurately obtain the above disk usage status.

Optionally, in the foregoing Embodiment 1 and Embodiment 2, the foregoing disk management method further includes:

When receiving the retrieval instruction, a video file list is obtained based on the first data block mapping;

Obtaining a data block corresponding to each complete video file in the video file list;

Based on the start time of the video file in the data block of each data block and the end time of the video file in the data block, determine the start time and end time of each complete video file;

The complete video file that satisfies the time condition is used as the search result.

Wherein, when retrieval is required, a retrieval instruction is input, wherein the retrieval instruction includes a time condition, that is, a start time and an end time of the video file to be retrieved. Since the first data block stores usage information of each data block, and the above usage information can indicate the complete video file to which each data block belongs, therefore, according to the data block attribution stamp of each data block, the video stored in the disk can be mapped to The list of files, at the same time, the corresponding data blocks of each complete video file are obtained, for example, the above-mentioned video file File1 corresponds to data block 1 and data block 2; then, according to the start time of the video file in the data block of each data block and The end time of the video file in the data block determines the start time and end time of each complete video file. For example, the start time of the video file in the data block of the above data block 1 is 18:00, and the end time of the video file in the data block is 18:03; the start time of the video file in the data block of the above data block 2 is 18:03, and the end time of the video file in the data block is 18:05, because the data block 1 and the data block 2 constitute a complete video file, After splicing it, it can be seen that the start time of the complete video file File1 is 18:00 and the end time is 18:05. After splicing each complete video file, the complete video file that meets the time condition is used as the search result, and the search result is output to the screen; if there are multiple search results, the search results are sorted in chronological order , Displayed in a list, after the user enters the selection instruction, the video file selected by the selection instruction is played for the user to view. Through the above search process, for the currently used mainstream 1T to 4T disks, the capacity of the data block can be calculated according to the formula in the above embodiment 1 to 8 trillion, and the current disk sequential reading speed is generally above 120MB / s. That is, the 8 megabytes of data can be read in less than 0.067 seconds; that is, the first data block can be read in 0.067 seconds, and the usage status of the entire disk can be obtained to complete the retrieval of the video file. It should be noted that if the above-mentioned first data block is damaged, the above-mentioned retrieval process can be applied to the second data block, and retrieval is performed through the second data block.

Optionally, in the foregoing Embodiment 1 and Embodiment 2, the foregoing disk management method further includes:

When receiving the data to be written, read the first data block;

Based on the first data block, determining a free data block in the disk as a data block to be written;

Writing the data to be written into the data block to be written;

After writing the data to be written into the data block to be written, the first data block is updated.

Wherein, the free data blocks in the disk can be searched by the data block type in the usage information of each data block recorded in the first data block. If there are more than two free data blocks in the disk, the two or more free data blocks can be freed. Among the data blocks, the free data block at the front is the data block to be written; alternatively, any data block can be randomly designated as the data block to be written, and the determination method of the written data block is not limited here. After the data to be written is written into the data block to be written, the data block to be written has already been written with data, that is, the usage information of the data block has been changed. The first data block is updated, and at the same time, after the first data block is updated, the updated data is backed up to the second data block, that is, the first data block and the second data block are kept as backups for each other at any time. It should be noted that if the above-mentioned first data block is damaged, the above-mentioned writing process may be applied to the second data block, and writing is performed through the second data block.

Optionally, in the foregoing Embodiment 1 and Embodiment 2, the foregoing disk management method further includes:

Reading the first data block, and judging whether the corresponding usage information is damaged by the data block check bit;

If there is damaged usage information, the usage information is restored through the second data block.

Among them, because the first data block and the second data block are mutually backup, and the two are far apart, generally no damage will occur at the same time, so the use of the data block stored in the first data block or the second data block When the information is damaged, the above-mentioned second data block or the first data block can be used to restore the usage information stored by itself. Optionally, even if the usage information of the same data block stored in the first data block and the second data block is damaged, only the first 32 bytes of the corresponding data block need to be read to obtain the data block again And restore the usage information read again to the corresponding positions of the first data block and the second data block. Through the above recovery process, even if the entire first data block and the second data block are damaged, only the first 32 bytes of each data block need to be read. For example, for a 4T-byte disk, each data block is 8 trillion, then there are a total of 524288 data blocks, only need to read the first 32 bytes of the 524288 data blocks, that is, only need to read the data of 524288 * 32 bytes = 16 trillion to restore the data of the entire 4T disk. Of course, when the second data block needs data recovery, the above-mentioned recovery process can also be referred to to recover the damaged usage information through the first data block, which is not limited here.

Optionally, in the foregoing Embodiment 1 and Embodiment 2, the foregoing disk management method further includes:

Reading the first data block;

Based on the first data block, determining the earliest data block of the video file stored in the disk as the data block to be overwritten;

Clear the data stored in the data block to be overwritten as a blank data block.

Among them, for the video files used for monitoring, in order to ensure continuous recording under the limited disk space, it is necessary to adopt the method of covering the data blocks with an earlier time to ensure the timeliness and fluency of the video files. It should be noted that if the above-mentioned first data block is damaged, the above-mentioned overwriting process can be applied to the second data block, and the second data block is used for overwriting.

As can be seen from the above, in the embodiment of the present application, the usage information of each data block in the disk is stored in a specific data block, so that when it is necessary to read and write to the disk, the specific data block can be quickly positioned, and to a certain extent Improve disk read and write performance. When you need to use the disk, whether it is data retrieval, writing, recovery or overwriting, it can be quickly executed.

It should be understood that the size of the sequence numbers of the steps in the above embodiments does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

Example 3

Embodiment 3 of the present application provides a disk management apparatus. The above disk management apparatus may be integrated into an electronic device. As shown in FIG. 3, the disk management apparatus 300 in the embodiment of the present application includes:

The dividing unit 301 is used to divide the disk into more than one data block, wherein the capacity of the above data block is calculated by a preset formula;

The scanning unit 302 is configured to scan the usage information of each data block of the disk;

The storage unit 303 is configured to store usage information of each data block obtained by scanning in a preset first data block;

The reading unit 304 is configured to read the disk through the first data block when the disk system is started.

Optionally, the above-mentioned disk management device 300 further includes:

A backup unit, configured to backup the first data block to a preset second data block, so that the first data block and the second data block are mutually backed up, wherein the second data block and the first data The positions of the blocks are separated by at least a preset distance;

The reading unit 304 includes:

A first data block detection subunit, configured to detect whether the first data block is damaged;

A first data block reading subunit, configured to read the disk through the first data block if the first data block is not damaged;

The second data block reading subunit is used to read the disk through the second data block if the first data block is damaged.

Optionally, the above-mentioned usage information includes: data block attribution stamp, data block position, start time of video file in the data block, end time of video file in the data block, data block type and data block check bit, wherein the above data The block attribution stamp indicates the complete video file to which the above data block belongs.

Optionally, the above-mentioned disk management device 300 further includes:

A file list obtaining unit, configured to obtain a video file list based on the first data block mapping when receiving a search instruction, wherein the search instruction includes a time condition;

A data block obtaining unit, configured to obtain a data block corresponding to each complete video file in the above-mentioned video file list;

The time determination unit is used to determine the start time and end time of each complete video file based on the start time of the video file in the data block of each data block and the end time of the video file in the data block;

The retrieval result determination unit is used to take a complete video file that satisfies the above time condition as a retrieval result.

Optionally, the reading unit 304 is further configured to read the first data block when receiving data to be written;

The disk management device 300 also includes:

A data block to be written determination unit, configured to determine an idle data block in the disk as the data block to be written based on the first data block;

A writing unit, configured to write the data to be written into the data block to be written;

The updating unit is configured to update the first data block after writing the data to be written into the data block to be written.

Optionally, the reading unit 304 is further configured to read the first data block, and determine whether the corresponding usage information is damaged through the data block check bit;

The disk management device 300 also includes:

The recovery unit is configured to recover the use information through the second data block if there is damaged use information.

As can be seen from the above, in the embodiment of the present application, the disk management device stores the usage information of each data block in the disk in a specific data block, so that when the disk needs to be read and written, the specific data block can be used to quickly locate And to a certain extent, improve disk read and write performance. When you need to use the disk, whether it is data retrieval, writing, recovery or overwriting, it can be quickly executed.

Example 4

Embodiment 4 of the present application provides an electronic device, please refer to FIG. 4, the electronic device in the embodiment of the present application includes: a memory 401, one or more processors 402 (only one shown in FIG. 4) and stored in the memory A computer program on 401 that can run on a processor. The memory 401 is used to store software programs and modules. The processor 402 executes various functional applications and data processing by running the software programs and units stored in the memory 401 to obtain resources corresponding to the preset events. Specifically, the processor 402 implements the following steps by running the above computer program stored in the memory 401:

Divide the disk into more than one data block, where the capacity of the above data block is calculated by a preset formula;

Scan the usage information of each data block of the above disk;

Store the usage information of each data block obtained by scanning in a preset first data block;

When the disk system is started, the disk is read through the first data block.

Assuming that the above is the first possible implementation manner, in the second possible implementation manner provided as the basis of the first possible implementation manner, in the above, the usage information of each scanned data block is stored in a preset After the first data block, the processor 402 also implements the following steps by running the above computer program stored in the memory 401:

Backing up the first data block to a preset second data block, so that the first data block and the second data block are mutually backup, wherein the second data block and the first data block are at least separated from each other Preset distance

When the disk system is started, reading the disk through the first data block includes:

Check whether the above first data block is damaged;

If the first data block is not damaged, read the disk through the first data block;

If the first data block is damaged, the disk is read through the second data block.

In a third possible embodiment provided as the basis of the second possible embodiment above, the usage information includes: data block attribution stamp, data block location, start time of video file in the data block, video in the data block The end time of the file, the type of the data block and the parity of the data block, wherein the data block attribution stamp indicates the complete video file to which the data block belongs.

In the fourth possible embodiment provided as the basis of the third possible embodiment above, the processor 402 further implements the following steps when running the above-mentioned computer program stored in the memory 401:

When a retrieval instruction is received, a video file list is obtained based on the first data block mapping, wherein the retrieval instruction includes a time condition;

Obtain the data block corresponding to each complete video file in the above video file list;

Based on the start time of the video file in the data block of each data block and the end time of the video file in the data block, determine the start time and end time of each complete video file;

The complete video file that satisfies the above time conditions is used as the search result.

In the fifth possible implementation manner provided as the basis of the above third possible implementation manner, the processor 402 further implements the following steps by running the above computer program stored in the memory 401:

When receiving the data to be written, read the first data block;

Based on the first data block, determining an idle data block in the disk as a data block to be written;

Writing the data to be written into the data block to be written;

After writing the data to be written into the data block to be written, the first data block is updated.

In the sixth possible implementation manner provided as the basis of the third possible implementation manner described above, the processor 402 further implements the following steps by running the above computer program stored in the memory 401:

Reading the first data block, and judging whether the corresponding usage information is damaged by the data block check bit;

If there is damaged usage information, the above usage information is restored through the above second data block.

Further, as shown in FIG. 4, the above electronic device may further include: one or more input devices 403 (only one shown in FIG. 4) and one or more output devices 404 (only one shown in FIG. 4). The memory 401, the processor 402, the input device 403, and the output device 404 are connected through a bus 405.

It should be understood that in the embodiment of the present application, the so-called processor 402 may be a central processing unit (Central Processing Unit (CPU), the processor can also be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (Application Specific Integrated Circuit (ASIC), ready-made programmable gate array (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

The input device 403 may include a keyboard, a touchpad, a fingerprint sensor (for collecting user's fingerprint information and fingerprint direction information), a microphone, etc., and the output device 404 may include a display, a speaker, and the like.

The memory 401 may include a read-only memory and a random access memory, and provide instructions and data to the processor 402. Part or all of the memory 401 may also include non-volatile random access memory. For example, the memory 401 may also store device type information.

As can be seen from the above, in the embodiment of the present application, the electronic device stores the usage information of each data block in the disk in a specific data block, so that when it is necessary to read and write to the disk, the specific data block can be used to quickly locate, and To a certain extent, improve disk read and write performance. When you need to use the disk, whether it is data retrieval, writing, recovery or overwriting, it can be quickly executed.

Those skilled in the art can clearly understand that, for convenience and conciseness of description, only the above-mentioned division of each functional unit and module is used as an example for illustration. In practical applications, the above-mentioned functions can be allocated by different functional units, Module completion means that the internal structure of the above device is divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiment may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit. The above integrated unit may use hardware It can also be implemented in the form of software functional units. In addition, the specific names of each functional unit and module are only for the purpose of distinguishing each other, and are not used to limit the protection scope of the present application. For the specific working processes of the units and modules in the above system, reference may be made to the corresponding processes in the foregoing method embodiments, which will not be repeated here.

In the above embodiments, the description of each embodiment has its own emphasis. For a part that is not detailed or recorded in an embodiment, you can refer to the related descriptions of other embodiments.

Those of ordinary skill in the art may realize that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of external device software and electronic hardware. Whether these functions are executed in hardware or software depends on the specific application of the technical solution and design constraints. Professional technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

In the embodiments provided in this application, it should be understood that the disclosed device and method may be implemented in other ways. For example, the system embodiments described above are only schematic. For example, the above-mentioned division of modules or units is only a division of logical functions. In actual implementation, there may be other divisions, for example, multiple units or components may be combined Or it can be integrated into another system, or some features can be ignored or not implemented. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

If the above integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it may be stored in a computer-readable storage medium. Based on this understanding, the present application can implement all or part of the processes in the methods of the above embodiments, and can also be completed by instructing relevant hardware through a computer program. The above computer program can be stored in a computer-readable storage medium When executed by the processor, the steps of the foregoing method embodiments may be implemented. Wherein, the above-mentioned computer program includes computer program code, and the above-mentioned computer program code may be in the form of source code, object code, executable file or some intermediate form. The above-mentioned computer-readable storage medium may include: any entity or device capable of carrying the above-mentioned computer program code, recording medium, U disk, removable disk, magnetic disk, optical disk, computer-readable memory, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), electrical carrier signals, telecommunication signals, and software distribution media. It should be noted that the content contained in the above computer-readable storage medium can be appropriately increased or decreased according to the requirements of legislation and patent practice in jurisdictions. For example, in some jurisdictions, according to legislation and patent practice, computer-readable storage The medium does not include electrical carrier signals and telecommunications signals.

The above-mentioned embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, persons of ordinary skill in the art should understand that they can still perform the foregoing embodiments The recorded technical solutions are modified, or some of the technical features are equivalently replaced; and these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of this application, and should be included in this Within the scope of protection applied for.

Claims (10)

A disk management method, characterized in that it includes: Divide the disk into more than one data block, wherein the capacity of the data block is calculated by a preset formula; Scan the usage information of each data block of the disk; Store the usage information of each data block obtained by scanning in a preset first data block; When the disk system is started, the disk is read through the first data block. The disk management method according to claim 1, wherein after storing the usage information of each scanned data block in a preset first data block, the disk management method further comprises: Backing up the first data block to a preset second data block, so that the first data block and the second data block are mutually backed up, wherein the second data block and the first data The positions of the blocks are separated by at least a preset distance; When the disk system is started, reading the disk through the first data block includes: Detect whether the first data block is damaged; If the first data block is not damaged, read the disk through the first data block; If the first data block is damaged, the disk is read through the second data block. The disk management method according to claim 1 or 2, wherein the usage information includes: data block attribution stamp, data block position, start time of video file in the data block, end time of video file in the data block, Data block type and data block check bit, wherein the data block attribution stamp indicates the complete video file to which the data block belongs. The disk management method according to claim 3, wherein the disk management method further comprises: When a retrieval instruction is received, a video file list is obtained based on the first data block mapping, where the retrieval instruction includes a time condition; Obtaining a data block corresponding to each complete video file in the video file list; Based on the start time of the video file in the data block of each data block and the end time of the video file in the data block, determine the start time and end time of each complete video file; The complete video file that satisfies the time condition is used as the search result. The disk management method according to claim 3, wherein the disk management method further comprises: When receiving the data to be written, read the first data block; Based on the first data block, determining a free data block in the disk as a data block to be written; Writing the data to be written into the data block to be written; After writing the data to be written into the data block to be written, the first data block is updated. The disk management method according to claim 3, wherein the disk management method further comprises: Reading the first data block, and judging whether the corresponding usage information is damaged by the data block check bit; If there is damaged usage information, the usage information is restored through the second data block. A disk management device is characterized by comprising: A dividing unit is used to divide the disk into more than one data block, wherein the capacity of the data block is calculated by a preset formula; A scanning unit for scanning the usage information of each data block of the disk; A storage unit, configured to store usage information of each data block obtained by scanning in a preset first data block; The reading unit is configured to read the disk through the first data block when the disk system is started. The disk management device according to claim 7, wherein the disk management device further comprises: A backup unit, configured to backup the first data block to a preset second data block, so that the first data block and the second data block are mutually backed up, wherein the second data block is The positions of the first data blocks are at least separated by a preset distance; The reading unit includes: A first data block detection subunit, configured to detect whether the first data block is damaged; A first data block reading subunit, configured to read the disk through the first data block if the first data block is not damaged; The second data block reading subunit is used to read the magnetic disk through the second data block if the first data block is damaged. An electronic device, including a memory, a processor, and a computer program stored in the memory and runable on the processor, characterized in that, when the processor executes the computer program, it is implemented as claimed in claims 1 to 6. The steps of any one of the methods. A computer-readable storage medium storing a computer program, characterized in that, when the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 6 are implemented.