CN111897676A - File backup method and device based on database index - Google Patents
File backup method and device based on database index Download PDFInfo
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- CN111897676A CN111897676A CN202010681410.2A CN202010681410A CN111897676A CN 111897676 A CN111897676 A CN 111897676A CN 202010681410 A CN202010681410 A CN 202010681410A CN 111897676 A CN111897676 A CN 111897676A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/14—Error detection or correction of the data by redundancy in operation
- G06F11/1402—Saving, restoring, recovering or retrying
- G06F11/1446—Point-in-time backing up or restoration of persistent data
- G06F11/1456—Hardware arrangements for backup
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/14—Error detection or correction of the data by redundancy in operation
- G06F11/1402—Saving, restoring, recovering or retrying
- G06F11/1446—Point-in-time backing up or restoration of persistent data
- G06F11/1458—Management of the backup or restore process
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/10—File systems; File servers
- G06F16/13—File access structures, e.g. distributed indices
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2201/00—Indexing scheme relating to error detection, to error correction, and to monitoring
- G06F2201/80—Database-specific techniques
Abstract
The application discloses a file backup method and device based on database index, wherein the method comprises the following steps: dividing a preset double hard disk into a first partition and a second partition respectively; wherein the capacity of the second partition is greater than the capacity of the first partition; respectively manufacturing the first partitions of the double hard disks into database storage partitions in a RAID1 mode; selecting a directory needing to be backed up in a database according to the requirements of a user; and according to the directory selected by the user, automatically performing double-hard-disk backup. By adopting the file backup method based on the database index, a user can self-select and set important data to perform double backup, so that the effective balance of the reliability and the utilization rate of the hard disk equipment is realized, the overall efficiency of the hard disk equipment is improved, and the use experience of the user is greatly improved.
Description
Technical Field
The embodiment of the invention relates to the technical field of database storage, in particular to a file backup method and device based on database indexes, and further relates to electronic equipment and a computer readable storage medium.
Background
With the rapid development of scientific technology, database storage technology is gradually perfected and matured, and the requirement of people on data security is higher and higher. RAID (Redundant Array of Independent Disks) is a technology that combines a plurality of Independent Disks (physical Disks) in different ways to form a hard disk group (logical disk), thereby providing higher storage performance than a single disk and providing data backup. The different ways of composing an array of hard disks are called RAID Levels (RAID Levels). The group of disks that is organized appears to the user as a single hard disk that the user can partition, format, etc., and operates on an array of hard disks as if it were a single hard disk. In contrast, hard disk arrays are much faster than individual hard disks and provide automatic data backup. The data backup function is that the damaged data can be recovered by using the backup information once the user data is damaged, so that the safety of the user data is guaranteed.
However, the current RAID-based data backup modes mainly include schemes such as RAID0, RAID1, RAID3, and RAID5, and the main defects are that the usage rate of the hard disk space is not high, for example, the usage rate of RAID1 is only 50%, or the requirement on the number of hard disk blocks is high, for example, RAID3 and RAID5 need at least 3 hard disk blocks. The reliability and the utilization rate of the storage efficiency of the hard disk equipment are difficult to realize effective balance.
Disclosure of Invention
Therefore, the embodiment of the invention provides a file backup method based on database index, so as to solve the problem that the reliability and the utilization rate of a hard disk storage device in the prior art cannot be effectively balanced, and the user experience is poor.
In order to achieve the above object, the embodiments of the present invention provide the following technical solutions:
in a first aspect, an embodiment of the present invention provides a file backup method based on a database index, including: dividing a preset double hard disk into a first partition and a second partition respectively; wherein the capacity of the second partition is greater than the capacity of the first partition; respectively manufacturing the first partitions of the double hard disks into database storage partitions in a RAID1 mode; selecting a directory needing to be backed up in a database according to the requirements of a user; and according to the directory selected by the user, automatically performing double-hard-disk backup.
Further, the second partition is used for storing file data.
Further, the first partition is configured to store a directory structure corresponding to the file data.
Further, the method for backing up files based on the database index further includes: and when the file data to be stored is stored in the second partition, storing a directory structure corresponding to the file data to be stored in the first partition, and constructing a mapping relation between the file data to be stored and a directory.
Further, the selecting a directory to be backed up in the database according to the user requirement specifically includes: receiving a file data backup request input by a user; and selecting a corresponding directory to be backed up in the first partition according to the file data backup request and the mapping relation between the file data to be stored and the directory.
In a second aspect, an embodiment of the present invention further provides a file backup apparatus based on a database index, including: the partition module is used for dividing a preset double hard disk into a second partition used for storing file data and a first partition used for storing a directory structure corresponding to the file data; wherein the capacity of the second partition is greater than the capacity of the first partition; the storage partition making module is used for making the first partitions of the double hard disks into database storage partitions in an RAID1 mode respectively; the catalog selection module is used for selecting a catalog to be backed up in the database according to the requirement of a user; and the automatic backup module is used for automatically backing up the double hard disks according to the directory selected by the user.
Further, the file backup device based on the database index further includes: and the mapping relation construction module is used for storing the directory structure corresponding to the file data to be stored into the first partition when the file data to be stored is stored into the second partition, and constructing the mapping relation between the file data to be stored and the directory.
Further, the catalog selection module is specifically configured to: receiving a file data backup request input by a user; and selecting a corresponding directory to be backed up in the first partition according to the file data backup request and the mapping relation between the file data to be stored and the directory.
In a third aspect, an embodiment of the present invention further provides an electronic device, including: a processor and a memory; the memory is used for storing a program of a database index-based file backup method, and the electronic device executes any one of the above-mentioned database index-based file backup methods after being powered on and running the program of the database index-based file backup method through the processor.
In a fourth aspect, an embodiment of the present invention further provides a computer-readable storage medium, where one or more program instructions are contained in the computer-readable storage medium, and the one or more program instructions are used for a processor to execute any one of the above-mentioned database index-based file backup methods.
By adopting the file backup method based on the database index, the user can self-select and set important data for double backup, so that the effective balance of the reliability and the utilization rate of the hard disk equipment is realized, the overall efficiency of the hard disk equipment is improved, and the use experience of the user is greatly improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
Fig. 1 is a flowchart of a file backup method based on database indexes according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a file backup device based on database indexes according to an embodiment of the present invention;
fig. 3 is a schematic diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. 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 invention.
Currently, the RAID-based data backup modes mainly include schemes such as RAID0, RAID1, RAID3, and RAID 5. The RAID0 is: if there are n hard disks, originally only one hard disk can be written at the same time, and the next hard disk is fully written, after RAID0 is made, n blocks can be written at the same time, the speed is improved quickly, but the reliability is poor due to no backup, and n is at least 2. RAID1 was derived due to the poor reliability of RAID 0. The RAID1 is: if n hard disks exist, n/2 hard disks are used as mirror image hard disks, when data are written into one hard disk, data are written into the other hard disk at the same time, when one hard disk is damaged, the mirror image hard disks can be automatically jacked up, the reliability is improved, the space utilization rate is too low, and n is at least 2. The RAID3 is: if n disks exist, 1 disk serves as a check disk, the rest n-1 disks are equivalent to RAID0 for simultaneous reading and writing, and when one disk is damaged, the original data of the damaged disk can be restored through the check code. This verification method is particularly useful when one data is missing in the middle, and can be deduced from the data and verification data of other discs. However, there is also a problem that since n-1 disks are made of RAID0, all hard disks are dragged to serve each read and write, and data recovery cannot be performed in case of a bad parity disk, and n is at least 3. RAID 5: the difference is made on the basis of RAID3, and the size of the same is 1 block of disk as a check disk, and the size of n-1 block of disk as a data disk, but the check code is distributed in each hard disk, and is not a single hard disk, namely a distributed check disk, and the minimum is 3. However, the existing schemes of RAID0-RAID5 and the like have the main defects that the usage rate of the hard disk space is not high, for example, the usage rate of RAID1 is only 50%, or the requirement on the number of hard disk blocks is high, for example, RAID3 and RAID5 need at least 3 hard disks. Therefore, the file backup method based on the database index is optimized to be realized based on two hard disks, and the reliability and the utilization rate are effectively balanced.
The following describes an embodiment of a file backup method based on database index according to the present invention in detail. As shown in fig. 1, which is a flowchart of a file backup method based on database indexes according to an embodiment of the present invention, a specific implementation process includes the following steps:
step S101: dividing a preset double hard disk into a second partition for storing file data and a first partition for storing a directory structure corresponding to the file data; wherein the capacity of the second partition is greater than the capacity of the first partition.
Specifically, the preset dual hard disks may be respectively divided into 2 partitions, where the first partition is based on 1% of the minimum capacity of the dual hard disks, and the second partition is based on the remaining capacity of the dual hard disks.
It should be noted that, in the embodiment of the present invention, the storage method is not limited to the above-mentioned dual hard disk partition storage manner, and it may be optimized to only need at least two independent hard disks, which is not described in detail herein.
Step S102: and respectively manufacturing the first partitions of the double hard disks into data bank storage partitions in a RAID1 mode.
After the preset dual hard disks are divided into the first partition and the second partition in step S101, the first partition of the dual hard disks may be further made into the database storage partition of RAID1 mode in this step.
In the embodiment of the invention, the first partition of the dual hard disks can be made into a data bank storage partition of a RAID1 mode respectively so as to ensure the integrity of the data bank index. In a specific implementation process, when file data to be stored is stored in the second partition of the double hard disks, a directory structure corresponding to the file data to be stored is stored in the first partition, and a mapping relation between the file data to be stored and a directory is established. The RAID1 mode, also known as a Mirror (Mirror) mode, improves reliability by employing Mirror fault tolerance. Each working hard disk has one or more mirror hard disks, and data must be written into the mirror hard disks each time data is written into the working hard disks. During the storage process, the data of the original data hard disk is copied to the mirror hard disk. When data is read, when a problem occurs in the original data hard disk, the data can be read from the mirror image hard disk. The hard disk array has high reliability, but the effective capacity can be reduced to below 50% of the total capacity. When a RAID1 mode data bank storage partition has just been created, a synchronization process is required to initialize the original data, and will not be described in detail herein.
Step S103: and selecting the directory needing to be backed up in the database according to the requirements of the user.
After the first partition is made into the data bank storage partitions in the RAID1 mode in step S102, in this step, a directory that needs to be backed up in the data bank may be selected from the first partition according to the needs of the user.
In the embodiment of the invention, a file data backup request input by a user is received, and a corresponding directory needing to be backed up is selected in the first partition according to the file data backup request and the mapping relation between the file data to be stored and the directory.
Step S104: and according to the directory selected by the user, automatically performing double-hard-disk backup.
By adopting the file backup method based on the database index, the user can self-select and set important data for double backup, so that the effective balance of the reliability and the utilization rate of the hard disk equipment is realized, the overall efficiency of the hard disk equipment is improved, and the use experience of the user is greatly improved.
Corresponding to the file backup method based on the database index, the invention also provides a file backup device based on the database index. Since the embodiment of the device is similar to the above method embodiment, the description is simple, and for the relevant points, please refer to the description of the above method embodiment, and the embodiment of the file backup device based on database index described below is only schematic. Fig. 2 is a schematic diagram of a file backup device based on database indexes according to an embodiment of the present invention.
The invention relates to a file backup device based on database index, which comprises the following parts:
the partition module 201 is configured to divide a preset dual hard disk into a second partition for storing file data and a first partition for storing a directory structure corresponding to the file data; wherein the capacity of the second partition is greater than the capacity of the first partition.
And the storage partition making module 202 is used for making the first partitions of the double hard disks into the data bank storage partitions in the RAID1 mode respectively.
The catalog selection module 203 is used for selecting a catalog which needs to be backed up in the database according to the requirement of the user.
And the automatic backup module 204 is configured to automatically perform dual hard disk backup according to the directory selected by the user.
By adopting the file backup device based on the database index, a user can self-select and set important data for double backup, so that the effective balance of the reliability and the utilization rate of the hard disk equipment is realized, the overall efficiency of the hard disk equipment is improved, and the use experience of the user is greatly improved.
Corresponding to the file backup method based on the database index, the invention also provides electronic equipment. Since the embodiment of the electronic device is similar to the above method embodiment, the description is relatively simple, and please refer to the description of the above method embodiment, and the electronic device described below is only schematic. Fig. 3 is a schematic view of an electronic device according to an embodiment of the present invention.
The electronic device specifically includes: a processor 301 and a memory 302; the memory 302 is configured to run one or more program instructions, and is configured to store a program of a database index-based file backup method, where after the electronic device is powered on and runs the program of the database index-based file backup method through the processor 301, the electronic device executes any one of the above-mentioned database index-based file backup methods.
Corresponding to the file backup method based on the database index, the invention also provides a computer storage medium. Since the embodiment of the computer storage medium is similar to the above method embodiment, the description is simple, and please refer to the description of the above method embodiment, and the computer storage medium described below is only schematic.
The computer storage medium contains one or more program instructions for executing the database index based file backup method by a server.
In an embodiment of the invention, the processor or processor module may be an integrated circuit chip having signal processing capabilities. The Processor may be a general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, discrete hardware component.
The various methods, steps and logic blocks disclosed in the embodiments of the present invention 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 invention 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 processor reads the information in the storage medium and completes the steps of the method in combination with the hardware.
The storage medium may be a memory, for example, which may be volatile memory or nonvolatile memory, or which may include both volatile and nonvolatile memory.
The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory.
The volatile Memory may be a Random Access Memory (RAM) which serves as an external cache. By way of example and not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (ddr Data Rate SDRAM), Enhanced SDRAM (ESDRAM), synclink DRAM (SLDRAM), and Direct memory bus RAM (DRRAM).
The storage media described in connection with the embodiments of the invention are intended to comprise, without being limited to, these and any other suitable types of memory.
Those skilled in the art will appreciate that the functionality described in the present invention may be implemented in a combination of hardware and software in one or more of the examples described above. When software is applied, the corresponding functionality may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.
The above-mentioned embodiments, objects, technical solutions and advantages of the present invention are further described in detail, it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made on the basis of the technical solutions of the present invention should be included in the scope of the present invention.
Claims (10)
1. A file backup method based on database index is characterized by comprising the following steps:
dividing a preset double hard disk into a first partition and a second partition respectively; wherein the capacity of the second partition is greater than the capacity of the first partition;
respectively manufacturing the first partitions of the double hard disks into database storage partitions in a RAID1 mode;
selecting a directory needing to be backed up in a database according to the requirements of a user;
and according to the directory selected by the user, automatically performing double-hard-disk backup.
2. The database index-based file backup method according to claim 1, wherein the second partition is used for storing file data.
3. The database-index-based file backup method according to claim 2, wherein the first partition is used for storing a directory structure corresponding to the file data.
4. The method for file backup based on database index according to claim 3, further comprising: and when the file data to be stored is stored in the second partition, storing a directory structure corresponding to the file data to be stored in the first partition, and constructing a mapping relation between the file data to be stored and a directory.
5. The method for backing up files based on database indexes according to claim 4, wherein the selecting a directory in the database to be backed up according to the user's requirement specifically comprises:
receiving a file data backup request input by a user;
and selecting a corresponding directory to be backed up in the first partition according to the file data backup request and the mapping relation between the file data to be stored and the directory.
6. A database index-based file backup apparatus, comprising:
the partition module is used for dividing a preset double hard disk into a second partition used for storing file data and a first partition used for storing a directory structure corresponding to the file data; wherein the capacity of the second partition is greater than the capacity of the first partition;
the storage partition making module is used for making the first partitions of the double hard disks into database storage partitions in an RAID1 mode respectively;
the catalog selection module is used for selecting a catalog to be backed up in the database according to the requirement of a user;
and the automatic backup module is used for automatically backing up the double hard disks according to the directory selected by the user.
7. The apparatus for database index based file backup according to claim 6, further comprising: and the mapping relation construction module is used for storing the directory structure corresponding to the file data to be stored into the first partition when the file data to be stored is stored into the second partition, and constructing the mapping relation between the file data to be stored and the directory.
8. The apparatus of claim 7, wherein the directory selection module is specifically configured to:
receiving a file data backup request input by a user;
and selecting a corresponding directory to be backed up in the first partition according to the file data backup request and the mapping relation between the file data to be stored and the directory.
9. An electronic device, comprising:
a processor; and
a memory for storing a program of a database index-based file backup method, wherein the electronic device executes the database index-based file backup method according to any one of claims 1 to 5 after being powered on and running the program of the database index-based file backup method through the processor.
10. A computer-readable storage medium containing one or more program instructions for executing the database index based file backup method of any one of claims 1 to 5 by a processor.
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Application publication date: 20201106 |