CN112988458A

CN112988458A - Data backup method and device, electronic equipment and storage medium

Info

Publication number: CN112988458A
Application number: CN201911311754.8A
Authority: CN
Inventors: 李露璐
Original assignee: China Mobile Communications Group Co Ltd; China Mobile Group Sichuan Co Ltd
Current assignee: China Mobile Communications Group Co Ltd; China Mobile Group Sichuan Co Ltd
Priority date: 2019-12-18
Filing date: 2019-12-18
Publication date: 2021-06-18
Anticipated expiration: 2039-12-18
Also published as: CN112988458B

Abstract

The application discloses a data backup method and device, electronic equipment and a storage medium, and relates to the technical field of data storage. The data backup method comprises the following steps: cutting data to be backed up into data items with preset lengths to obtain a first data item set; comparing the first data item set with a second data item set in a data dictionary acquired from a storage medium; updating the data dictionary and the code set and backup data which are stored in the storage medium and are associated with the data dictionary according to the comparison result; synchronizing the updated data dictionary to the storage medium. The data backup method, the data backup device, the electronic equipment and the storage medium have the advantages of reducing occupied bandwidth, being small in data transmission quantity, being small in occupied storage space and the like.

Description

Data backup method and device, electronic equipment and storage medium

Technical Field

The present application relates to the field of data storage technologies, and in particular, to a data backup method and apparatus, an electronic device, and a storage medium.

Background

Data backup refers to a process of copying a data set from a hard disk or an array of an application host to another storage medium in order to prevent a system from operating erroneously or causing data loss due to a system failure.

In the conventional backup process, no matter how the backup is performed, all data backed up in the production system always needs to be transmitted to the backup device and then stored.

By adopting the backup mode, higher network bandwidth is needed, and a large amount of data needs to be stored, so that a large amount of storage space is occupied.

Disclosure of Invention

The embodiment of the application provides a data backup method to solve the problems of large occupied bandwidth, large transmission data volume and large occupied storage space during data backup in the prior art.

The embodiment of the application further provides a data backup device to solve the problems that in the prior art, the data backup device occupies a large bandwidth, large transmission data volume and occupies a large storage space.

The embodiment of the application also provides the electronic equipment and the storage medium.

The embodiment of the application adopts the following technical scheme:

a method of data backup, comprising:

cutting data to be backed up into data items with preset lengths to obtain a first data item set;

comparing the first data item set with a second data item set in a data dictionary acquired from a storage medium;

updating the data dictionary and the code set and backup data which are stored in the storage medium and are associated with the data dictionary according to the comparison result;

synchronizing the updated data dictionary to the storage medium.

A data backup apparatus, the data backup apparatus comprising:

the backup device comprises a segmentation module, a backup module and a backup module, wherein the segmentation module is configured to segment data to be backed up into data items with preset lengths to obtain a first data item set;

a comparison module configured to compare the first set of data items with a second set of data items in a data dictionary obtained from a storage medium;

the updating module is configured to update the data dictionary and the code set and backup data which are stored in the storage medium and are associated with the data dictionary according to the comparison result;

a synchronization module configured to synchronize the updated data dictionary to the storage medium.

An electronic device comprises a processor, a communication interface, a memory and a communication bus, wherein the processor, the communication interface and the memory are communicated with each other through the bus;

a memory for storing a computer program;

and the processor is used for executing the program stored in the memory and realizing the steps of the method.

A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, carries out the method steps of the above.

The embodiment of the application adopts at least one technical scheme which can achieve the following beneficial effects:

the first data item set is compared with a second data item set in a data dictionary acquired from a storage medium, the data dictionary and the coding set and the backup data which are stored in the storage medium and are associated with the data dictionary are updated according to the comparison result, and the updated data dictionary is synchronized to the storage medium. Therefore, all backed-up data does not need to be transmitted to a storage medium, and the method has the advantages of reducing occupied bandwidth, reducing data transmission quantity, occupying small storage space and the like.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 is a schematic application environment diagram of a data backup method, an apparatus, an electronic device, and a storage medium according to an embodiment of the present application.

Fig. 2 is a flowchart of a data backup method according to an embodiment of the present application.

Fig. 3 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

Fig. 4 is a schematic structural diagram of a data backup device according to an embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The technical solutions provided by the embodiments of the present application are described in detail below with reference to the accompanying drawings.

The method, the device, the electronic equipment and the storage medium can be used for data backup without transmitting all backed-up data to the storage medium, so that the transmission of the data between a user side and the storage medium is reduced, and the occupation of network bandwidth is reduced.

First, in order to more intuitively understand the scheme provided by the embodiment of the present specification, a system architecture of the data backup scheme provided by the embodiment of the present specification is described below with reference to fig. 1.

Fig. 1 is a schematic application environment diagram of a data backup method, an apparatus, an electronic device, and a storage medium according to one or more embodiments of the present application. As shown in fig. 1, the terminal device 10 establishes a communication connection with the storage medium 20 for data exchange, so that the terminal device 10 can back up data that needs to be backed up to the storage medium 20. The terminal device 10 may be, but is not limited to, a personal computer, a smart phone, a tablet computer, a laptop portable computer, a vehicle-mounted computer, a personal digital assistant, etc. The storage medium 20 may be, but is not limited to, a data storage server for data backup, a disk array, and the like, which are dedicated to data storage backup.

The data backup method provided by the embodiment of the present application will be described in detail below.

The data backup method provided in the embodiments of the present application can be applied to the terminal device 10, and for convenience of description, the embodiments of the present application all use the terminal device 10 as an execution subject except for special description.

Specifically, the data backup method, as shown in fig. 2, may include the following steps:

step S21, the data to be backed up is cut into data items with a predetermined length, and a first data item set is obtained.

The backup scheme provided by the embodiment of the application is mainly used for backuping the backed-up data again after the data is updated. For example, the method can be used for backing up the updated new version application after the version of an application is updated.

When backing up data to be backed up, firstly, the data to be backed up may be cut into data items of a predetermined length, and the predetermined length may be set by a user according to an actual situation.

In one or more embodiments of the present application, different cut lengths may be set according to different data types. For example, the cut length may be set to 16 bits for data of a file system and 32 bits for data of a database. When data is cut, the data to be backed up can be cut according to the cutting length corresponding to the data type of the data to be backed up, so as to obtain a plurality of data items, and for convenience of description, a set of the plurality of data items is referred to as a first data item set.

In one or more embodiments of the present application, the data to be backed up may be composed of a plurality of data blocks with different lengths, and the data blocks may be cut in units of data blocks when the data blocks are cut. The length of the data block may not be an integral multiple of the cutting length, and after the data block in the data to be backed up is cut according to the set cutting length, the length of the last data item may not reach the cutting length. Thus, the last data item may not be required to reach the predetermined length when the data block is cut.

For example, for data of a file system, the cutting length is set to 16 bits, however, a certain data block has only 24 bits, when cutting is performed, the data block can be cut into two data items with data lengths of 16 bits and 8 bits in sequence.

In one or more embodiments of the present application, a data item may include a reference bit and an increment bit, wherein the reference bit is associated with a data type of the corresponding data item for distinguishing between different types of data. The delta bits are associated with the content of the corresponding data item. For example, the reference bit may be 001 for a data item corresponding to data of a file system, and 002 for a data item corresponding to data of a database, so that different types of data can be distinguished according to the reference bit.

In step S23, a data dictionary is acquired from the storage medium.

And meanwhile, acquiring a data dictionary corresponding to the data to be backed up from the storage medium, wherein the data dictionary is obtained after the previous version of the data to be backed up is backed up. For example, if the data to be backed up is the 2.0 version of the a application, the obtained data dictionary may be the data dictionary obtained after the 1.0 version of the a application is backed up.

In one or more embodiments of the present application, when acquiring a data dictionary, a data dictionary corresponding to identification information of data to be backed up may be acquired from a storage medium according to the identification information. The identification information may be a data type or some other information for identifying the data to be backed up, so as to ensure that the data dictionary corresponding to the data to be backed up can be accurately acquired from the storage medium.

Where the data dictionary includes a plurality of data items, referred to herein as a second set of data items for ease of description. Corresponding codes are set in the data items, the codes are used for numbering the corresponding data items, and for convenience of description, a set of all codes corresponding to the second data item set is called a first code set.

The encoding in the first encoding set may be binary, octal, decimal, hexadecimal, etc. In general, data is stored in binary, and in order to avoid the re-conversion during operation, in one or more embodiments of the present application, the encoding is performed in binary.

It is to be understood that the order of step S21 and step S23 is not limited.

Step S25, the first data item set is compared with a second data item set in the data dictionary acquired from the storage medium.

After the data to be backed up is cut into data items with a predetermined length to obtain a first data item set and the data dictionary is obtained from the storage medium, the first data item set may be compared with a second data item set in the data dictionary obtained from the storage medium to find out different data items in the first data item set and the second data item set.

Step S27, updating the data dictionary and the code set and backup data stored in the storage medium and associated with the data dictionary according to the comparison result.

Specifically, when a new version is released, contents are generally added to the last version, that is, a part of data is added to the data to be backed up. Thus, after the data to be backed up is cut into data items of a predetermined length to obtain a first data item set, the first data item set typically has a portion of more data items relative to a second data item set in the data dictionary.

Thus, when making the comparison, the data items in the first set of data items may be compared one-by-one with the data items in the second set of data items to find more data items in the first set of data items relative to the second set of data items.

After the comparison is performed, additional data items in the first data item set relative to the second data item set may be added to the second data item set, and a code corresponding to the added data items may be newly added to the first code set, where the added code may also indicate a storage order of the corresponding data items.

The storage medium stores a second encoding set associated with the data dictionary to backup the data set, that is, all data of the application of the previous version and all sets of encoding corresponding to the data items cut from the data of the application of the previous version.

After comparing the data items in the first data item set with the data items in the second data item set one by one, the second encoding set stored in the storage medium can be updated according to the corresponding encoding of the data items in the first data item set, and the excess data in the first data item set is added to the backup data set.

For example, a certain piece of data to be backed up is "aabbbccddcccddee", and after being cut into the first data item set, the data items in the first data item set are 00010, 00001, 00100, 00111, and 11111, respectively. Whereas in the previous version the piece of data was "aabbbccddcvdd", i.e. the data items in the second set of data items were 00010, 00001, 00100, 00111 respectively, assuming that the corresponding encodings for these several data items in the second set of data items were 2, 1, 4, 7 respectively (for convenience of distinguishing binary encoded data items, therefore here encoded with an arabic number schematic representation), data item 11111 was not found in the second set of data items of the data dictionary. This extra data item 11111 may be added to the second set of data items in the data dictionary at this point and the corresponding code for data item 11111 is updated to x, then the code x is stored, the code in the last code set is 214747x, and the code x also indicates the storage order of the corresponding data item 11111.

The storage medium stores all data of the previous version application and a set of all codes corresponding to the data items cut by the previous version application, that is, stores data "aabbbccdd" and codes 2, 1, 4, 7 corresponding to the data items cut by the data "aabbbccdd". The excess codes x are also added to the second code set at the time of the update, and the codes in the updated second code set are 214747 x. Meanwhile, the excessive data ee is added into the backup data set, and the added backup data set is aabbbccdde.

Step S29, the updated data dictionary is synchronized to the storage medium.

After updating the second data item set and the encoding set in the data dictionary, the updated data dictionary may be synchronized to the storage medium, at which point the backup process of the data to be backed up is completed.

By adopting the backup mode, when the data is restored, the terminal equipment can initiate a restoring process, find the corresponding second coding set from the storage medium, inquire the data dictionary according to the codes in the second coding set, and quickly restore the data items and synthesize the data to be restored through the coding sequence and the corresponding relation between the codes in the data dictionary and the data items.

According to the data backup method provided by the embodiment of the application, the first data item set is compared with the second data item set in the data dictionary acquired from the storage medium, the data dictionary and the coding set and the backup data which are stored in the storage medium and are associated with the data dictionary are updated according to the comparison result, and the updated data dictionary is synchronized to the storage medium. Therefore, all backed-up data does not need to be transmitted to a storage medium, data transmission between the terminal device and the storage is reduced, and the method has the advantages of reducing occupied bandwidth, reducing data transmission quantity, occupying small storage space and the like. Meanwhile, due to the variability of the data items and the uniqueness of the codes, the backup data is equivalently encrypted, and the safety of the backup data is improved.

The foregoing description has been directed to specific embodiments of this disclosure. Other embodiments are within the scope of the following claims. In some cases, the actions or steps recited in the claims may be performed in a different order than in the embodiments and still achieve desirable results. In addition, the processes depicted in the accompanying figures do not necessarily require the particular order shown, or sequential order, to achieve desirable results. In some embodiments, multitasking and parallel processing may also be possible or may be advantageous.

Fig. 3 is a schematic structural diagram of an electronic device according to an embodiment of the present application. Referring to fig. 3, at a hardware level, the electronic device includes a processor, and optionally further includes an internal bus, a network interface, and a memory. The Memory may include a Memory, such as a Random-Access Memory (RAM), and may further include a non-volatile Memory, such as at least 1 disk Memory. Of course, the electronic device may also include hardware required for other services.

The processor, the network interface, and the memory may be connected to each other via an internal bus, which may be an ISA (Industry standard architecture) bus, a PCI (Peripheral Component Interconnect) bus, an EISA (Extended Industry standard architecture) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one double-headed arrow is shown in FIG. 3, but this does not indicate only one bus or one type of bus.

And the memory is used for storing programs. In particular, the program may include program code comprising computer operating instructions. The memory may include both memory and non-volatile storage and provides instructions and data to the processor.

The processor reads the corresponding computer program from the nonvolatile memory into the memory and then runs the computer program to form a data backup device on a logic level. The processor is used for executing the program stored in the memory and is specifically used for executing the following operations:

updating a data dictionary and the code set and backup data which are stored in the storage medium and are associated with the data dictionary according to the comparison result;

synchronizing the updated data dictionary to the storage medium.

The method executed by the data backup device according to the embodiment shown in fig. 2 of the present application may be applied to a processor, or may be implemented by a processor. The processor may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuits of hardware in a processor or instructions in the form of software. The Processor may be a general-purpose Processor, including a Central Processing Unit (CPU), a Network Processor (NP), and the like; but also Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other Programmable logic devices, discrete gate or transistor logic devices, discrete hardware components. The various methods, steps, and logic blocks disclosed in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and completes the steps of the method in combination with hardware of the processor.

The electronic device may also execute the method of fig. 2 and implement the functions of the data backup apparatus in the embodiment shown in fig. 2, which are not described herein again in this embodiment of the present application.

Of course, besides the software implementation, the electronic device of the present application does not exclude other implementations, such as a logic device or a combination of software and hardware, and the like, that is, the execution subject of the following processing flow is not limited to each logic unit, and may also be hardware or a logic device.

Embodiments of the present application also provide a computer-readable storage medium storing one or more programs, where the one or more programs include instructions, which when executed by a portable electronic device including a plurality of application programs, enable the portable electronic device to perform the method of the embodiment shown in fig. 2, and are specifically configured to:

synchronizing the updated data dictionary to the storage medium.

Fig. 4 is a schematic structural diagram of the data backup apparatus 40 according to an embodiment of the present application. Referring to fig. 4, in a software implementation, the data backup apparatus 40 may include:

the dividing module 41 is configured to divide the data to be backed up into data items with a predetermined length, resulting in a first data item set.

It is to be understood that the segmentation module 41 may be configured to perform the step S21 described above.

An obtaining module 43 configured to obtain the data dictionary from the storage medium.

It is understood that the obtaining module 43 may be configured to execute the above step S23.

A comparison module 45 configured to compare the first set of data items with a second set of data items in a data dictionary obtained from a storage medium.

It is understood that the comparing module 45 may be configured to perform the step S25 described above.

And the updating module 47 is configured to update the data dictionary and the code set and the backup data stored in the storage medium and associated with the data dictionary according to the comparison result.

It is to be understood that the updating module 47 may be configured to execute the above step S27.

A synchronization module 49 configured to synchronize the updated data dictionary to the storage medium.

It is understood that the synchronization module 49 may be configured to perform the step S29 described above.

In the data backup apparatus 40 provided in this embodiment of the present application, the first data item set is compared with the second data item set in the data dictionary acquired from the storage medium, the data dictionary and the code set and the backup data stored in the storage medium and associated with the data dictionary are updated according to the comparison result, and the updated data dictionary is synchronized with the storage medium. Therefore, all backed-up data does not need to be transmitted to a storage medium, data transmission between the terminal device and the storage is reduced, and the method has the advantages of reducing occupied bandwidth, reducing data transmission quantity, occupying small storage space and the like. Meanwhile, due to the variability of the data items and the uniqueness of the codes, the backup data is equivalently encrypted, and the safety of the backup data is improved.

In short, the above description is only a preferred embodiment of the present application, and is not intended to limit the scope of the present application. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

The systems, devices, modules or units illustrated in the above embodiments may be implemented by a computer chip or an entity, or by a product with certain functions. One typical implementation device is a computer. In particular, the computer may be, for example, a personal computer, a laptop computer, a cellular telephone, a camera phone, a smartphone, a personal digital assistant, a media player, a navigation device, an email device, a game console, a tablet computer, a wearable device, or a combination of any of these devices.

Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.

It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.

Claims

1. A method for data backup, comprising:

synchronizing the updated data dictionary to the storage medium.

2. The method of claim 1, wherein the cutting the data to be backed up into data items of a predetermined length to obtain a first data item set comprises:

and cutting the data to be backed up according to the cutting length corresponding to the data type of the data to be backed up to obtain the first data item set.

3. The method of claim 2, wherein the data items in the first set of data items include a reference bit and an increment bit, the reference bit being associated with the data type of the corresponding data item, the increment bit being associated with the content of the corresponding data item.

4. The method of claim 1, wherein the data dictionary comprises the second set of data items and the first encoded set, and wherein updating the data dictionary and the encoded set and the backup set stored on the storage medium and associated with the data dictionary based on the comparison comprises:

adding the excess data items in the first set of data items to the second set of data items;

newly adding codes corresponding to the added data items in the first code set, wherein the added codes indicate the storage sequence of the corresponding data items;

updating a second encoding set stored in the storage medium according to the encoding corresponding to the data items in the first data item set;

adding the data in the first data item set to the backup data set.

5. The method of claim 1, further comprising:

and acquiring the data dictionary from the storage medium.

6. The method of claim 5, wherein said retrieving the data dictionary from the storage medium comprises:

and acquiring the data dictionary corresponding to the identification information from the medium according to the identification information of the data to be backed up.

7. The method of claim 6, wherein the identification information is a data type.

8. A data backup apparatus, characterized in that the data backup apparatus comprises:

9. An electronic device is characterized by comprising a processor, a communication interface, a memory and a communication bus, wherein the processor and the communication interface are used for realizing the communication between the processor and the memory through the bus;

a memory for storing a computer program;

a processor for executing a program stored in the memory to perform the method steps of any of claims 1 to 7.

10. A computer-readable storage medium, characterized in that a computer program is stored in the storage medium, which computer program, when being executed by a processor, carries out the method steps of any one of claims 1 to 7.