WO2021051512A1

WO2021051512A1 - Polymorphic storage mechanism-based snapshot generation method, apparatus and computer device

Info

Publication number: WO2021051512A1
Application number: PCT/CN2019/116713
Authority: WO
Inventors: 王鹏
Original assignee: 平安科技（深圳）有限公司
Priority date: 2019-09-19
Filing date: 2019-11-08
Publication date: 2021-03-25
Also published as: CN110806950A; CN110806950B

Abstract

A polymorphic storage mechanism-based snapshot generation method, an apparatus, a computer device, and a storage medium. The method comprising: receiving a command to generate snapshots for multiple storage systems; acquiring storage mechanisms of the storage systems; if a designated storage system the storage mechanism of which is a polymorphic storage mechanism is present among the multiple storage systems, acquiring discrepant data and the discrepant physical location at which the discrepant data is stored; if the discrepant data also comprises second discrepant data, performing binary conversion to obtain designated binary data; storing the designated binary data and the second discrepant data at a preset first physical location; generating a first snapshot indication volume, the first snapshot indication volume comprising a first logical address and the discrepant physical location, and the first logical address pointing to a first physical address. Thus, snapshots of multiple storage systems relating to a polymorphic storage mechanism are achieved, and the applicability of snapshots is improved.

Description

Snapshot generation method, device and computer equipment based on polymorphic storage mechanism

This application claims the priority of the Chinese patent application filed with the Chinese Patent Office on September 19, 2019, the application number is 201910887181.7, and the invention title is "Snapshot generation method, device and computer equipment based on polymorphic storage mechanism", and its entire content Incorporated in this application by reference.

Technical field

This application relates to the computer field, in particular to a snapshot generation method, device, computer equipment, and storage medium based on a polymorphic storage mechanism.

Background technique

A snapshot is a fully usable copy of a specified data set. The copy includes an image of the corresponding data at a certain point in time (the point in time when the copy starts), that is, a record of the state of data storage at a certain time, which can be used for data recovery, etc. use. In the current data storage field, snapshots have been widely used, but the current snapshot technology has the following problems:

1. Snapshot technology is based on a single storage system. For distributed storage, that is, when some data involves multiple storage systems, only multiple snapshots can be generated separately;

2. The storage system that adopts the polymorphic storage mechanism has great application potential because of its higher data storage density, but it is different from the storage system of the ordinary binary storage mechanism, and the snapshot used must also use the polymorphic storage mechanism. Cause incompatibility between snapshots.

Therefore, the conventional technology lacks a scheme for generating snapshots involving multiple storage systems and further involving a multi-state storage mechanism.

technical problem

The main purpose of this application is to provide a snapshot generation method, device, computer equipment, and storage medium based on a polymorphic storage mechanism, aiming to realize snapshots of multiple storage systems involving a polymorphic storage mechanism, and improve the applicability of snapshots .

Technical solutions

In order to achieve the above-mentioned purpose of the invention, this application proposes a snapshot generation method based on a polymorphic storage mechanism, which is applied to middleware, and the middleware is located between multiple storage systems, including:

Receive instructions for generating snapshots of multiple storage systems;

Obtain the storage mechanism of the storage system through a preset storage mechanism identification method, and determine whether there is a designated storage system whose storage mechanism is a polymorphic storage mechanism among the multiple storage systems;

If there is a designated storage system whose storage mechanism is a polymorphic storage mechanism among the multiple storage systems, the difference data of the current stored data that is different from the pre-stored initial data and the difference data are obtained according to the preset difference data acquisition method. The stored difference physical location, wherein the difference data includes the first difference data stored in a polymorphic storage system;

Determining whether the difference data further includes second difference data, where the second difference data is data stored in other storage systems among the plurality of storage systems except the designated storage system;

If the difference data further includes second difference data, perform binary conversion processing on the first difference data to obtain designated binary data;

Storing the designated binary data and the second difference data in a preset first physical location;

A preset snapshot generation technology is used to generate a first snapshot indication volume, where the first snapshot indication volume includes a first logical address and the differential physical location, and the first logical address points to the first physical location.

Beneficial effect

The snapshot generation method, device, computer equipment, and storage medium based on the polymorphic storage mechanism of the present application receive instructions for generating snapshots for multiple storage systems; obtain the storage mechanism of the storage system; if the multiple storage systems are If there is a designated storage system whose storage mechanism is a polymorphic storage mechanism, the difference data and the difference physical location where the difference data is stored are obtained; if the difference data also includes the second difference data, binary conversion processing is performed to obtain the specified binary Data; store the designated binary data and the second difference data to a preset first physical location; generate a first snapshot indication volume, the first snapshot indication volume including a first logical address and the difference physical location , The first logical address points to the first physical address. In this way, snapshots of multiple storage systems involving polymorphic storage mechanisms are realized, and the applicability of snapshots is improved.

Description of the drawings

FIG. 1 is a schematic flowchart of a snapshot generation method based on a polymorphic storage mechanism according to an embodiment of the application;

2 is a schematic block diagram of the structure of a snapshot generation device based on a polymorphic storage mechanism according to an embodiment of the application;

FIG. 3 is a schematic block diagram of the structure of a computer device according to an embodiment of the application.

The best mode of the present invention

1, an embodiment of the present application provides a snapshot generation method based on a polymorphic storage mechanism, which is applied to middleware, the middleware is located between multiple storage systems, and the method includes:

S1. Receive an instruction to generate snapshots of multiple storage systems;

S2. Obtain the storage mechanism of the storage system through a preset storage mechanism identification method, and determine whether there is a designated storage system whose storage mechanism is a polymorphic storage mechanism among the multiple storage systems;

S3. If there is a designated storage system whose storage mechanism is a polymorphic storage mechanism among the multiple storage systems, obtain the difference data and the difference between the current stored data and the prestored initial data according to the preset difference data acquisition method The difference physical location where the data is stored, wherein the difference data includes the first difference data stored in a polymorphic storage system;

S4. Determine whether the difference data further includes second difference data, where the second difference data is data stored in other storage systems in the plurality of storage systems except the designated storage system;

S5. If the difference data further includes second difference data, perform binary conversion processing on the first difference data to obtain designated binary data;

S6. Store the designated binary data and the second difference data in a preset first physical location;

S7. Use a preset snapshot generation technology to generate a first snapshot indication volume, where the first snapshot indication volume includes a first logical address and the differential physical location, and the first logical address points to the first physical location.

As described in step S1 above, an instruction to generate snapshots for multiple storage systems is received. Among them, this application is applied to middleware, and the middleware is located between multiple storage systems. Therefore, the snapshot generation of this application is no longer based on each storage system itself. Instead, the middleware implements unified snapshot processing to solve multiple storage systems. The storage system cannot jointly generate the same and unified snapshot. Among them, the middleware is an independent service program used to interface with multiple storage systems, wherein the middleware can be located in any location, preferably in a server.

As described in step S2 above, the storage mechanism of the storage system is acquired through the preset storage mechanism identification method, and it is determined whether there is a designated storage system whose storage mechanism is a polymorphic storage mechanism among the multiple storage systems. Ordinary binary storage mechanisms, such as storage in the form of magnetic domains, refer to the use of two states in which the magnetization direction of the magnetic domain is positive or negative to store information. The multi-state storage mechanism, which is different from the binary storage mechanism, refers to the storage of information in more than two states, such as the use of the different electrical characteristics of the storage medium under the magnetoelectric effect, such as the BiFeO3-based magnetoelectric material with a perovskite structure Implemented polymorphic storage mechanism. The different electrical characteristics of the storage medium under the magnetoelectric effect are, for example, those with magnetoelectric effect under different magnetic fields (for example, a forward magnetic field and a reverse magnetic field) and different electric fields (for example, a forward electric field and a reverse electric field). The value of the dielectric constant of the storage medium will change significantly (for example, due to mechanisms such as phase change), so the value of the dielectric constant can be used as the basis for data storage. Specifically, the preset storage mechanism identification method is, for example, using preset magnetic and electric field generating devices to simultaneously apply different magnetic fields and different electric fields to the storage test primitives, and obtain the storage test primitives in different locations. Multiple electrical data under a magnetic field and different electric fields; judging whether the multiple electrical data are within three or more preset value ranges; if the multiple electrical data are within three or more preset values Within the numerical range, it is determined that the storage mechanism of the storage system is a polymorphic storage mechanism.

As described in step S3 above, if there is a designated storage system whose storage mechanism is a polymorphic storage mechanism in the multiple storage systems, the difference between the current stored data and the pre-stored initial data is obtained according to the preset difference data acquisition method The difference physical location where the data and the difference data are stored, wherein the difference data includes the first difference data stored in a polymorphic storage system. Snapshot technology reads and writes faster than ordinary backup technology, because it only needs to record different data, without copying all the data. Therefore, the present application obtains the difference data of the current stored data that is different from the pre-stored initial data and the difference physical location where the difference data is stored according to the preset difference data acquisition method. Specifically, the preset difference data acquisition method is, for example: acquiring the designated data modification record after the generation time of the initial data from the system log; performing classification processing on the designated data modification record by physical address, thereby Divide the specified data modification records into multiple data record sets; mark the modified data corresponding to the modification record closest to the current time in each data record set as difference data, and obtain the difference data.

As described in step S4 above, it is determined whether the difference data further includes second difference data, and the second difference data is stored in other storage systems of the plurality of storage systems except the designated storage system. data. If the difference data only includes the first difference data, there is no need to perform binary conversion, and the difference data can be copied directly using a polymorphic storage mechanism.

As described in step S5 above, if the difference data further includes the second difference data, the first difference data is subjected to binary conversion processing to obtain designated binary data. The process of binary conversion processing is, for example: obtaining the specified electrical data of the storage element corresponding to the first difference data, the storage element being the smallest storage unit of the first difference data; dividing the storage element Are the first storage element, the second storage element, the third storage element, and the fourth storage element, wherein the value of the specified electrical data of the first storage element is within the first numerical range, and the first storage element The value of the specified electrical data of the second storage element is within the second numerical range, the value of the specified electrical data of the third storage element is within the third numerical range, and the specified electrical data of the fourth storage element The value of is within the fourth value range; a third mapping element pair and a fourth mapping element pair are established, and the third mapping element pair consists of a storage element whose electrical data value is within the second data range And a sequence of storage primitives whose values of electrical data are within the first data range, and the fourth mapping primitive pair is composed of a sequence of storage primitives whose values of two electrical data are both within the second data range; Perform a mapping read operation on the first difference data. The mapping read operation uses a third mapping primitive pair to replace the third storage primitive when reading the third storage primitive, and when reading the third storage primitive, In the case of four storage primitives, a fourth mapping primitive pair is used to replace the fourth storage primitive, thereby obtaining designated binary data.

As described in step S6 above, the designated binary data and the second difference data are stored in a preset first physical location. Further, when storing data, a preset encryption technique may be used to encrypt to obtain a ciphertext, and then the ciphertext is stored in a preset first physical location, so as to ensure the security of the information.

As described in step S7 above, the preset snapshot generation technology is used to generate a first snapshot indicating volume. The first snapshot indicating volume includes a first logical address and the differential physical location, and the first logical address points to the The first physical location. The snapshot generation technology can be any technology, for example, a snapshot-redirection-on-write technology, or a snapshot-replication technology-on-write technology, preferably the technology of redirecting a snapshot-on-write snapshot. Wherein, the first snapshot indicates that the first logical address in the volume provides the location of the differential data, and the differential physical location provides the location of the differential data in the initial data. Therefore, when you need to read the snapshot, you only need to indicate the volume according to the first snapshot. And the initial data can realize the snapshot read.

In one embodiment, the multi-state storage mechanism is a storage mechanism based on the magnetoelectric effect, the storage system has a storage test primitive for testing the storage mechanism, and the storage number of the storage test primitive is 1, The step S2 of obtaining the storage mechanism of the storage system through the preset storage mechanism identification method includes:

S201. Use preset magnetic and electric field generating devices to simultaneously apply different magnetic fields and different electric fields to the storage test primitives, and obtain multiple electrical data of the storage test primitives under different magnetic fields and different electric fields ；

S202: Determine whether the multiple electrical data are within three or more preset numerical ranges;

S203: If the multiple electrical data are within three or more preset numerical ranges, determine that the storage mechanism of the storage system is a polymorphic storage mechanism.

As described above, the storage mechanism of the storage system can be obtained through the preset storage mechanism identification method. The storage system of the present application has a storage test primitive for testing the storage mechanism. Since the storage bit of the storage test primitive is 1, there is almost no additional storage pressure, and the storage test primitive is passed The test can accurately obtain the storage mechanism of the storage system without the need to call the stored data, thereby reducing the number of reads and writes of the stored data, and also avoids possible mistakes in erasing and writing. The multi-state storage mechanism is a storage mechanism based on the magnetoelectric effect. Therefore, under different magnetic fields and different electric fields, the storage test primitives of the multi-state storage mechanism will exhibit multiple states, that is, multiple states are in three states. Electrical data within the range of more than one value. Accordingly, it is determined whether the storage mechanism of the storage system is a polymorphic storage mechanism by judging whether the plurality of electrical data are within three or more preset numerical ranges. The electrical data is related to the magnetoelectric effect and the storage test element. For example, if the storage test element stores data through different states of dielectric constant, the corresponding electrical data is the dielectric constant.

In one embodiment, the data modification records of the multiple storage systems are all saved in the system log, and the step S3 of acquiring the difference data of the current stored data that is different from the prestored initial data according to the preset difference data acquisition method ,include:

S301. Obtain a specified data modification record after the generation time of the initial data from the system log;

S302: Perform classification processing on the specified data modification records according to physical addresses, thereby dividing the specified data modification records into multiple data record sets;

S303. Record the modified data corresponding to the modification record closest to the current time in each data record set as difference data, and obtain the difference data.

As described above, it is realized that according to the preset difference data obtaining method, the difference data of the currently stored data different from the pre-stored initial data is obtained. Since the data modification records of the multiple storage systems are all stored in the system log, there is no need to use a common data comparison method to sequentially compare the difference between the current stored data and the initial data, thereby reducing the data processing pressure. In addition, since there may be multiple modifications to the data stored in the same location when data is modified, this application uses the specified data modification record to be classified according to physical address, so as to classify the designated data modification record. Divide into multiple data record sets; record the modified data corresponding to the modification record closest to the current time in each data record set as difference data, and use the latest data as the difference data to obtain the difference data.

In one embodiment, the judging whether the difference data further includes second difference data, and the second difference data is stored in a storage system other than the designated storage system among the plurality of storage systems The data after step S4 includes:

S41. If the difference data does not include the second difference data, store the first difference data in a second physical location preset in the designated storage system;

S42. Use a preset snapshot generation technology to generate a second snapshot indication volume, where the second snapshot indication volume includes a second logical address, and the second logical address points to the second physical address.

As described above, the generation of the second snapshot indication volume is achieved. If the difference data does not include the second difference data, it indicates that the difference data comes from a storage system whose storage mechanism is a polymorphic storage mechanism. At this time, the value of binary conversion is not high, so it is directly preset in the designated storage system It suffices to store the first difference data in the second physical location of. Then, a preset snapshot generation technology is used to generate a second snapshot indication volume, the second snapshot indication volume includes a second logical address, and the second logical address points to the second physical address. Therefore, snapshot reading can be realized based on the second snapshot indicating volume and initial data, and when reading, it is first determined that the second physical location is in the designated storage system, then the storage of the non-polymorphic storage mechanism is performed when the snapshot is read. The data of the system can be read quickly without judging whether it has been modified, thereby improving the speed of snapshot reading.

In one embodiment, the multi-state storage mechanism is a four-state storage mechanism based on the magnetoelectric effect, and the step S5 of performing binary conversion processing on the first difference data to obtain designated binary data includes:

S501. Acquire designated electrical data of a storage element corresponding to the first difference data, where the storage element is the smallest storage unit of the first difference data;

S502. Divide the storage primitives into a first storage primitive, a second storage primitive, a third storage primitive, and a fourth storage primitive, wherein the value of the specified electrical data of the first storage primitive is in the first storage primitive. Within a numerical range, the value of the specified electrical data of the second storage element is within the second numerical range, and the value of the specified electrical data of the third storage element is within the third numerical range, the The value of the designated electrical data of the fourth storage element is within the fourth value range;

S503. Establish a third mapping element pair and a fourth mapping element pair, where the third mapping element pair consists of a storage element whose value of electrical data is in the second data range and a value of electrical data that is in the first data range. A sequence of storage primitives within a data range is constituted, and the fourth mapping primitive pair is constituted by a sequence of storage primitives in which the values of two electrical data are both within the second data range;

S504. Perform a mapping read operation on the first difference data, where the mapping read operation uses a third mapping primitive pair to replace the third storage primitive when reading the third storage primitive, and when reading the third storage primitive, When the fourth storage element is taken, a fourth mapping element pair is used to replace the fourth storage element, thereby obtaining designated binary data.

As described above, the binary conversion processing of the first difference data is implemented to obtain designated binary data. In this application, two storage states are saved and only the other two storage states are mapped, which doubles the processing efficiency of the binary conversion in this application. The data stored in the first storage element is equivalent to 0 in binary data, the data stored in the second storage element is equivalent to 1 in binary data, and the data stored in the third storage element is equivalent to binary data. 10 in the data, the data stored in the fourth storage element is equivalent to 11 in the binary data. Since the classification process is adopted, only the third storage primitive-third mapping primitive pair and the fourth storage primitive-fourth mapping primitive pair mapping can be established. During the mapping read operation, the reading of the first storage element and the second storage element does not change, and when the third storage element and the fourth storage element are read, it becomes read Take the corresponding third mapping primitive pair and fourth mapping primitive pair to obtain accurate designated binary data.

In one embodiment, the step S6 of storing the designated binary data and the second difference data to a preset first physical location includes:

S601: Perform a hash calculation on the designated binary data according to a preset hash algorithm to obtain a first hash value;

S602. Perform a hash calculation on the second difference data according to a preset hash algorithm to obtain a second hash value.

S603. Use the first hash value as an encryption key to encrypt the second difference data to obtain a ciphertext of the second difference data.

S604: Use the second hash value as an encryption key to encrypt the designated binary data to obtain a ciphertext of the designated binary data;

S605. Store the designated binary data ciphertext and the second difference data ciphertext in a preset first physical location.

As described above, it is realized that the designated binary data and the second difference data are stored in the preset first physical location. This application adopts a cross-encryption method to improve information security. Wherein, since the encryption keys are respectively derived from the crossed designated binary data and the second difference data, and the encryption object is the crossed second difference data and the designated binary data, the information security can be guaranteed, and Reduce the key storage space required in common encryption technology (no need to store the key in advance).

In one embodiment, the preset snapshot generation technology is used to generate a first snapshot indication volume, the first snapshot indication volume includes a first logical address and the differential physical location, and the first logical address points to all After the step S7 of the first physical location, it includes:

S71. Receive a snapshot read instruction, where the snapshot read instruction carries a verification image used to verify identity;

S72. Calculate the similarity value between the verification image and the pre-stored planar image according to a preset similarity calculation method, and determine whether the similarity value is greater than a preset similarity threshold, wherein the planar image is pre-stored The plane projection image of the three-dimensional virtual graphics in the specified direction;

S73. If the similarity value is greater than a preset similarity threshold, perform redirection processing on the initial data, where the redirection processing refers to redirecting a different physical location in the initial data to the first Logical address

S74. Read the initial data after redirection processing.

As described above, snapshot reading is realized. This application uses the calculation of the similarity value between the verification image and the pre-stored planar image, and determines whether the similarity value is greater than a preset similarity threshold to verify the identity. The three-dimensional virtual figure is a three-dimensional figure in a virtual three-dimensional space, so the plane projection images in different designated directions are different, which is used as a basis for identity verification. The designated projection direction is agreed in advance to generate a flat projection image, and then the flat projection image is sent to the user. If the verification image provided by the user is the same or similar to the plane projection image, it is determined that the identity authentication is correct, and the initial data is redirected. The redirection refers to the difference in the initial data. The physical location redirection is the first logical address; the initial data after the redirection process is read to implement snapshot reading.

2, an embodiment of the present application provides a snapshot generation device based on a polymorphic storage mechanism, which is applied to middleware, the middleware is located between multiple storage systems, and the device includes:

The snapshot generation instruction receiving unit 10 is configured to receive a snapshot generation instruction for multiple storage systems;

The storage mechanism acquisition unit 20 is configured to acquire the storage mechanism of the storage system through a preset storage mechanism identification method, and determine whether there is a designated storage system whose storage mechanism is a polymorphic storage mechanism among the multiple storage systems;

The difference data obtaining unit 30 is configured to, if there is a designated storage system whose storage mechanism is a polymorphic storage mechanism among the multiple storage systems, according to a preset difference data obtaining method, obtain the difference between the current stored data and the pre-stored initial data The difference data and the difference physical location where the difference data is stored, wherein the difference data includes the first difference data stored in a polymorphic storage system;

The second difference data judging unit 40 is configured to judge whether the difference data further includes second difference data, and the second difference data is stored in the plurality of storage systems other than the designated storage system Data in the system;

The designated binary data acquiring unit 50 is configured to, if the difference data further includes second difference data, perform binary conversion processing on the first difference data to obtain designated binary data;

The first physical location storage unit 60 is configured to store the designated binary data and the second difference data to a preset first physical location;

The first snapshot indication volume generating unit 70 is configured to generate a first snapshot indication volume using a preset snapshot generation technology, where the first snapshot indication volume includes a first logical address and the difference physical location, and the first logical The address points to the first physical location.

The operations performed by the above-mentioned units respectively correspond to the steps of the snapshot generation method based on the polymorphic storage mechanism of the foregoing embodiment, and are not repeated here.

In one embodiment, the multi-state storage mechanism is a storage mechanism based on the magnetoelectric effect, the storage system has a storage test primitive for testing the storage mechanism, and the storage number of the storage test primitive is 1, The storage mechanism acquisition unit 20 includes:

The electrical data acquisition subunit is used to use preset magnetic and electric field generating devices to simultaneously apply different magnetic fields and different electric fields to the storage test primitives, and obtain the storage test primitives in different magnetic fields and different electric fields. Multiple electrical data under;

The numerical value range judgment subunit is used to judge whether the plurality of electrical data are respectively within three or more preset numerical value ranges;

The polymorphic storage mechanism determination subunit is configured to determine that the storage mechanism of the storage system is a polymorphic storage mechanism if the plurality of electrical data are within three or more preset value ranges.

The operations performed by the above-mentioned sub-units respectively correspond to the steps of the snapshot generation method based on the polymorphic storage mechanism of the foregoing embodiment one-to-one, and will not be repeated here.

In one embodiment, the data modification records of the multiple storage systems are all saved in the system log, and the difference data obtaining unit 30 includes:

The designated data modification record obtaining subunit is configured to obtain the designated data modification record after the generation time of the initial data from the system log;

The classification processing subunit is used to classify the specified data modification records according to physical addresses, thereby dividing the specified data modification records into multiple data record sets;

The difference data obtaining subunit is used to record the modified data corresponding to the modification record closest to the current time in each data record set as difference data, and to obtain the difference data.

In one embodiment, the device includes:

A first difference data storage unit, configured to store the first difference data in a second physical location preset in the designated storage system if the difference data does not include the second difference data;

The second snapshot indication volume generation unit is configured to generate a second snapshot indication volume using a preset snapshot generation technology, the second snapshot indication volume includes a second logical address, and the second logical address points to the second physical address.

In one embodiment, the multi-state storage mechanism is a four-state storage mechanism based on the magnetoelectric effect, and the designated binary data acquisition unit 50 includes:

A designated electrical data acquisition subunit for acquiring designated electrical data of a storage element corresponding to the first difference data, the storage element being the smallest storage unit of the first difference data;

The storage element division subunit is used to divide the storage element into a first storage element, a second storage element, a third storage element, and a fourth storage element, wherein the first storage element The value of the specified electrical data is within the first value range, the value of the specified electrical data of the second storage element is within the second value range, and the value of the specified electrical data of the third storage element is within the third value range. Within the numerical range, the numerical value of the designated electrical data of the fourth storage element is within the fourth numerical range;

The mapping primitive pair establishment subunit is used to establish a third mapping primitive pair and a fourth mapping primitive pair. The third mapping primitive pair is a storage primitive whose value of electrical data is within the second data range. And a sequence of storage primitives whose values of electrical data are within the first data range, and the fourth mapping primitive pair is composed of a sequence of storage primitives whose values of two electrical data are both within the second data range;

The mapping read subunit is configured to perform a mapping read operation on the first difference data, where the mapping read operation uses a third mapping primitive pair to replace the third storage when reading a third storage primitive Primitives, and when reading the fourth storage primitives, a fourth mapping primitive pair is used to replace the fourth storage primitives, so as to obtain designated binary data.

In one embodiment, the first physical location storage unit 60 includes:

The first hash value obtaining subunit is configured to perform a hash calculation on the designated binary data according to a preset hash algorithm to obtain the first hash value;

The second hash value obtaining subunit is configured to perform a hash calculation on the second difference data according to a preset hash algorithm to obtain a second hash value;

The second difference data ciphertext obtaining subunit is configured to use the first hash value as an encryption key to encrypt the second difference data to obtain the second difference data ciphertext;

The designated binary data ciphertext obtaining subunit is configured to use the second hash value as an encryption key to encrypt the designated binary data to obtain the designated binary data ciphertext;

The first physical location storage subunit is configured to store the designated binary data ciphertext and the second difference data ciphertext to a preset first physical location.

In one embodiment, the device includes:

A snapshot read instruction receiving unit, configured to receive a snapshot read instruction, the snapshot read instruction carries a verification image used to verify identity;

The similarity calculation unit is configured to calculate the similarity value between the verification image and the pre-stored planar image according to a preset similarity calculation method, and determine whether the similarity value is greater than a preset similarity threshold, wherein The plane image is the plane projection image of the pre-stored three-dimensional virtual graphics in the specified direction;

The redirection unit is configured to perform redirection processing on the initial data if the similarity value is greater than a preset similarity threshold value, where the redirection processing refers to redirecting a different physical location in the initial data to The first logical address;

The reading unit is used to read the initial data after redirection processing.

Referring to FIG. 3, an embodiment of the present invention also provides a computer device. The computer device may be a server, and its internal structure may be as shown in the figure. The computer equipment includes a processor, a memory, a network interface, and a database connected through a system bus. Among them, the processor designed by the computer is used to provide calculation and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program, and a database. The memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage medium. The database of the computer equipment is used to store the data used in the snapshot generation method based on the polymorphic storage mechanism. The network interface of the computer device is used to communicate with an external terminal through a network connection. The computer program is executed by the processor to realize a snapshot generation method based on a polymorphic storage mechanism.

The above-mentioned processor executes the above-mentioned snapshot generation method based on the polymorphic storage mechanism, wherein the steps included in the method respectively correspond one-to-one with the steps of executing the snapshot generation method based on the polymorphic storage mechanism of the foregoing embodiment, and will not be repeated here.

An embodiment of the present application also provides a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, a method for generating a snapshot based on a polymorphic storage mechanism is realized, wherein the steps included in the method are respectively executed The steps of the snapshot generation method based on the polymorphic storage mechanism in the foregoing embodiment correspond one-to-one, and are not repeated here.

The above are only the preferred embodiments of this application, and do not limit the scope of this application. Any equivalent structure or equivalent process transformation made using the content of the specification and drawings of this application, or directly or indirectly applied to other related The technical field is equally included in the scope of patent protection of this application.

Claims

A snapshot generation method based on a polymorphic storage mechanism, characterized in that it is applied to middleware, the middleware is located between multiple storage systems, and the method includes:

Receive instructions for generating snapshots of multiple storage systems;

Obtain the storage mechanism of the storage system through a preset storage mechanism identification method, and determine whether there is a designated storage system whose storage mechanism is a polymorphic storage mechanism among the multiple storage systems;

If there is a designated storage system whose storage mechanism is a polymorphic storage mechanism among the multiple storage systems, the difference data of the current stored data that is different from the pre-stored initial data and the difference data are obtained according to the preset difference data acquisition method. The stored difference physical location, wherein the difference data includes the first difference data stored in a polymorphic storage system;

Determining whether the difference data further includes second difference data, where the second difference data is data stored in other storage systems among the plurality of storage systems except the designated storage system;

If the difference data further includes second difference data, perform binary conversion processing on the first difference data to obtain designated binary data;

Storing the designated binary data and the second difference data in a preset first physical location;

A preset snapshot generation technology is used to generate a first snapshot indication volume, where the first snapshot indication volume includes a first logical address and the differential physical location, and the first logical address points to the first physical location.
The snapshot generation method based on a multi-state storage mechanism according to claim 1, wherein the multi-state storage mechanism is a storage mechanism based on the magnetoelectric effect, and the storage system has a storage test base for testing the storage mechanism. The storage bit number of the storage test primitive is 1, and the step of obtaining the storage mechanism of the storage system through a preset storage mechanism identification method includes:

Using preset magnetic and electric field generating devices to simultaneously apply different magnetic fields and different electric fields to the storage test primitives, and obtain multiple electrical data of the storage test primitives under different magnetic fields and different electric fields;

Judging whether the plurality of electrical data are within three or more preset numerical ranges;

If the multiple electrical data are within three or more preset numerical ranges, then it is determined that the storage mechanism of the storage system is a polymorphic storage mechanism.
The method for generating a snapshot based on a polymorphic storage mechanism according to claim 1, wherein the data modification records of the multiple storage systems are all saved in a system log, and the data is obtained according to a preset difference data obtaining method. The steps for the difference between the current stored data and the pre-stored initial data include:

Acquiring, from the system log, a specified data modification record after the generation time of the initial data;

Performing classification processing on the specified data modification records according to physical addresses, thereby dividing the specified data modification records into multiple data record sets;

The modified data corresponding to the modification record closest to the current time in each data record set is recorded as difference data, and the difference data is obtained.
The method for generating a snapshot based on a polymorphic storage mechanism according to claim 1, wherein the determining whether the difference data further includes second difference data, and the second difference data is stored in the plurality of storages. After the step of storing data in other systems other than the designated storage system in the system, it includes:

If the difference data does not include the second difference data, storing the first difference data in a second physical location preset in the designated storage system;

A preset snapshot generation technology is used to generate a second snapshot indication volume, the second snapshot indication volume includes a second logical address, and the second logical address points to the second physical address.
The snapshot generation method based on a multi-state storage mechanism according to claim 1, wherein the multi-state storage mechanism is a four-state storage mechanism based on the magnetoelectric effect, and the first difference data is converted into binary Processing to obtain the specified binary data, including:

Acquiring designated electrical data of a storage element corresponding to the first difference data, where the storage element is the smallest storage unit of the first difference data;

The storage element is divided into a first storage element, a second storage element, a third storage element, and a fourth storage element, wherein the value of the designated electrical data of the first storage element is at the first value Within the range, the value of the specified electrical data of the second storage element is within the second numerical range, the value of the specified electrical data of the third storage element is within the third numerical range, and the fourth The value of the designated electrical data of the storage primitive is within the fourth value range;

A third mapping element pair and a fourth mapping element pair are established. The third mapping element pair consists of a storage element whose value of electrical data is in the second data range and a value of electrical data that is in the first data. The sequence of storage primitives within the range is constituted, and the fourth mapping primitive pair is constituted by the sequence of storage primitives in which the values of the two electrical data are both within the second data range;

Perform a mapping read operation on the first difference data. The mapping read operation uses a third mapping primitive pair to replace the third storage primitive when reading the third storage primitive, and when reading the third storage primitive, In the case of four storage primitives, a fourth mapping primitive pair is used to replace the fourth storage primitive, thereby obtaining designated binary data.
The method for generating a snapshot based on a polymorphic storage mechanism according to claim 1, wherein the step of storing the designated binary data and the second difference data in a preset first physical location comprises:

Perform a hash calculation on the designated binary data according to a preset hash algorithm to obtain a first hash value;

Perform a hash calculation on the second difference data according to a preset hash algorithm to obtain a second hash value;

Use the first hash value as an encryption key to encrypt the second difference data to obtain the second difference data ciphertext;

Using the second hash value as an encryption key to encrypt the designated binary data to obtain a ciphertext of the designated binary data;

Storing the designated binary data ciphertext and the second difference data ciphertext in a preset first physical location.
The snapshot generation method based on a polymorphic storage mechanism according to claim 1, wherein the preset snapshot generation technology is used to generate a first snapshot indication volume, and the first snapshot indication volume includes a first logical address And the difference physical location, after the step of pointing the first logical address to the first physical location, the method includes:

Receiving a snapshot read instruction, where the snapshot read instruction carries a verification image for verifying identity;

According to the preset similarity calculation method, calculate the similarity value between the verification image and the pre-stored planar image, and determine whether the similarity value is greater than the preset similarity threshold, wherein the planar image is a pre-stored stereo virtual The plane projection image of the graphic in the specified direction;

If the similarity value is greater than the preset similarity threshold, perform redirection processing on the initial data, where the redirection processing refers to redirecting a different physical location in the initial data to the first logical address ；

Read the initial data after redirection processing.
A snapshot generation device based on a polymorphic storage mechanism, characterized in that it is applied to middleware, the middleware is located between multiple storage systems, and the device includes:

The snapshot generation instruction receiving unit is used to receive instructions for generating snapshots for multiple storage systems;

A storage mechanism acquisition unit, configured to acquire the storage mechanism of the storage system through a preset storage mechanism identification method, and determine whether there is a designated storage system whose storage mechanism is a polymorphic storage mechanism among the multiple storage systems;

The difference data obtaining unit is configured to obtain the difference between the current stored data and the pre-stored initial data according to the preset difference data obtaining method if there is a designated storage system whose storage mechanism is a polymorphic storage mechanism among the multiple storage systems The difference physical location where the data and the difference data are stored, wherein the difference data includes the first difference data stored in a polymorphic storage system;

The second difference data judging unit is configured to judge whether the difference data further includes second difference data, the second difference data being stored in the plurality of storage systems other than the designated storage system Data in;

A designated binary data acquisition unit, configured to, if the difference data further includes second difference data, perform binary conversion processing on the first difference data to obtain designated binary data;

A first physical location storage unit, configured to store the designated binary data and the second difference data to a preset first physical location;

The first snapshot indication volume generation unit is configured to generate a first snapshot indication volume using a preset snapshot generation technology, the first snapshot indication volume including a first logical address and the differential physical location, the first logical address Point to the first physical location.
The snapshot generation device based on a multi-state storage mechanism according to claim 8, wherein the multi-state storage mechanism is a storage mechanism based on the magnetoelectric effect, and the storage system has a storage test base for testing the storage mechanism. The storage bit number of the storage test primitive is 1, and the storage mechanism acquisition unit 20 includes:

The electrical data acquisition subunit is used to use preset magnetic and electric field generating devices to simultaneously apply different magnetic fields and different electric fields to the storage test primitives, and obtain the storage test primitives in different magnetic fields and different electric fields. Multiple electrical data under;

The numerical value range judgment subunit is used to judge whether the plurality of electrical data are respectively within three or more preset numerical value ranges;

The polymorphic storage mechanism determination subunit is configured to determine that the storage mechanism of the storage system is a polymorphic storage mechanism if the plurality of electrical data are within three or more preset value ranges.
The snapshot generation device based on a polymorphic storage mechanism according to claim 8, wherein the data modification records of the multiple storage systems are all saved in a system log, and the difference data obtaining unit 30 includes:

The designated data modification record obtaining subunit is configured to obtain the designated data modification record after the generation time of the initial data from the system log;

The classification processing subunit is used to classify the specified data modification records according to physical addresses, thereby dividing the specified data modification records into multiple data record sets;

The difference data obtaining subunit is used to record the modified data corresponding to the modification record closest to the current time in each data record set as difference data, and to obtain the difference data.
The device for generating snapshots based on a polymorphic storage mechanism according to claim 8, wherein the device comprises:

A first difference data storage unit, configured to store the first difference data in a second physical location preset in the designated storage system if the difference data does not include the second difference data;

The second snapshot indication volume generation unit is configured to generate a second snapshot indication volume using a preset snapshot generation technology, the second snapshot indication volume includes a second logical address, and the second logical address points to the second physical address.
The snapshot generation device based on a multi-state storage mechanism according to claim 8, wherein the multi-state storage mechanism is a four-state storage mechanism based on the magnetoelectric effect, and the designated binary data acquisition unit 50 includes:

A designated electrical data acquisition subunit for acquiring designated electrical data of a storage element corresponding to the first difference data, the storage element being the smallest storage unit of the first difference data;

The storage element division subunit is used to divide the storage element into a first storage element, a second storage element, a third storage element, and a fourth storage element, wherein the first storage element The value of the specified electrical data is within the first value range, the value of the specified electrical data of the second storage element is within the second value range, and the value of the specified electrical data of the third storage element is within the third value range. Within the numerical range, the numerical value of the designated electrical data of the fourth storage element is within the fourth numerical range;

The mapping primitive pair establishment subunit is used to establish a third mapping primitive pair and a fourth mapping primitive pair. The third mapping primitive pair is a storage primitive whose value of electrical data is within the second data range. And a sequence of storage primitives whose values of electrical data are within the first data range, and the fourth mapping primitive pair is composed of a sequence of storage primitives whose values of two electrical data are both within the second data range;

The mapping read subunit is configured to perform a mapping read operation on the first difference data, where the mapping read operation uses a third mapping primitive pair to replace the third storage when reading a third storage primitive Primitives, and when reading the fourth storage primitives, a fourth mapping primitive pair is used to replace the fourth storage primitives, so as to obtain designated binary data.
The snapshot generation device based on a polymorphic storage mechanism according to claim 8, wherein the first physical location storage unit 60 comprises:

The first hash value obtaining subunit is configured to perform a hash calculation on the designated binary data according to a preset hash algorithm to obtain the first hash value;

The second hash value obtaining subunit is configured to perform a hash calculation on the second difference data according to a preset hash algorithm to obtain a second hash value;

The second difference data ciphertext obtaining subunit is configured to use the first hash value as an encryption key to encrypt the second difference data to obtain the second difference data ciphertext;

The designated binary data ciphertext obtaining subunit is configured to use the second hash value as an encryption key to encrypt the designated binary data to obtain the designated binary data ciphertext;

The first physical location storage subunit is configured to store the designated binary data ciphertext and the second difference data ciphertext to a preset first physical location.
The device for generating snapshots based on a polymorphic storage mechanism according to claim 8, wherein the device comprises:

A snapshot read instruction receiving unit, configured to receive a snapshot read instruction, the snapshot read instruction carries a verification image used to verify identity;

The similarity calculation unit is configured to calculate the similarity value between the verification image and the pre-stored planar image according to a preset similarity calculation method, and determine whether the similarity value is greater than a preset similarity threshold, wherein The plane image is the plane projection image of the pre-stored three-dimensional virtual graphics in the specified direction;

The redirection unit is configured to perform redirection processing on the initial data if the similarity value is greater than a preset similarity threshold value, where the redirection processing refers to redirecting a different physical location in the initial data to The first logical address;

The reading unit is used to read the initial data after redirection processing.
A computer device including a memory and a processor, the memory storing a computer program, wherein the processor implements a snapshot generation method based on a polymorphic storage mechanism when the processor executes the computer program, and the polymorphic storage The snapshot generation method of the mechanism includes:

Receive instructions for generating snapshots of multiple storage systems;

Obtain the storage mechanism of the storage system through a preset storage mechanism identification method, and determine whether there is a designated storage system whose storage mechanism is a polymorphic storage mechanism among the multiple storage systems;

If there is a designated storage system whose storage mechanism is a polymorphic storage mechanism among the multiple storage systems, the difference data of the current stored data that is different from the pre-stored initial data and the difference data are obtained according to the preset difference data acquisition method. The stored difference physical location, wherein the difference data includes the first difference data stored in a polymorphic storage system;

Determining whether the difference data further includes second difference data, where the second difference data is data stored in other storage systems among the plurality of storage systems except the designated storage system;

If the difference data further includes second difference data, perform binary conversion processing on the first difference data to obtain designated binary data;

Storing the designated binary data and the second difference data in a preset first physical location;

A preset snapshot generation technology is used to generate a first snapshot indication volume, where the first snapshot indication volume includes a first logical address and the differential physical location, and the first logical address points to the first physical location.
The computer device according to claim 15, wherein the multi-state storage mechanism is a storage mechanism based on the magnetoelectric effect, the storage system has a storage test primitive for testing the storage mechanism, and the storage test base The storage bit number of the meta is 1, and the step of obtaining the storage mechanism of the storage system through the preset storage mechanism identification method includes:

Using preset magnetic and electric field generating devices to simultaneously apply different magnetic fields and different electric fields to the storage test primitives, and obtain multiple electrical data of the storage test primitives under different magnetic fields and different electric fields;

Judging whether the plurality of electrical data are within three or more preset numerical ranges;

If the multiple electrical data are within three or more preset numerical ranges, then it is determined that the storage mechanism of the storage system is a polymorphic storage mechanism.
The computer device according to claim 15, wherein the data modification records of the multiple storage systems are all saved in the system log, and the difference data acquisition method according to the preset method is used to obtain the current stored data that is different from the pre-stored data. The difference data steps of the initial data include:

Acquiring, from the system log, a specified data modification record after the generation time of the initial data;

Performing classification processing on the specified data modification records according to physical addresses, thereby dividing the specified data modification records into multiple data record sets;

The modified data corresponding to the modification record closest to the current time in each data record set is recorded as difference data, and the difference data is obtained.
A non-volatile computer-readable storage medium with a computer program stored thereon, wherein the computer program is characterized in that when the computer program is executed by a processor, a snapshot generation method based on a polymorphic storage mechanism is implemented, and the polymorphic storage The snapshot generation method of the mechanism includes:

Receive instructions for generating snapshots of multiple storage systems;

Obtain the storage mechanism of the storage system through a preset storage mechanism identification method, and determine whether there is a designated storage system whose storage mechanism is a polymorphic storage mechanism among the multiple storage systems;

If there is a designated storage system whose storage mechanism is a polymorphic storage mechanism among the multiple storage systems, the difference data of the current stored data that is different from the pre-stored initial data and the difference data are obtained according to the preset difference data acquisition method. The stored difference physical location, wherein the difference data includes the first difference data stored in a polymorphic storage system;

Determining whether the difference data further includes second difference data, where the second difference data is data stored in other storage systems among the plurality of storage systems except the designated storage system;

If the difference data further includes second difference data, perform binary conversion processing on the first difference data to obtain designated binary data;

Storing the designated binary data and the second difference data in a preset first physical location;

A preset snapshot generation technology is used to generate a first snapshot indication volume, where the first snapshot indication volume includes a first logical address and the differential physical location, and the first logical address points to the first physical location.
The non-volatile computer-readable storage medium of claim 18, wherein the multi-state storage mechanism is a storage mechanism based on the magnetoelectric effect, and the storage system has a storage test for testing the storage mechanism. Primitive, the storage bit number of the storage test primitive is 1, and the step of obtaining the storage mechanism of the storage system through a preset storage mechanism identification method includes:

Using preset magnetic and electric field generating devices to simultaneously apply different magnetic fields and different electric fields to the storage test primitives, and obtain multiple electrical data of the storage test primitives under different magnetic fields and different electric fields;

Judging whether the plurality of electrical data are within three or more preset numerical ranges;

If the plurality of electrical data are respectively within three or more preset numerical ranges, it is determined that the storage mechanism of the storage system is a polymorphic storage mechanism.
The non-volatile computer-readable storage medium according to claim 18, wherein the data modification records of the multiple storage systems are all saved in a system log, and the method for obtaining data according to the preset difference is: The steps of obtaining the difference data between the current stored data and the pre-stored initial data include:

Acquiring, from the system log, a specified data modification record after the generation time of the initial data;

Performing classification processing on the specified data modification records according to physical addresses, thereby dividing the specified data modification records into multiple data record sets;

The modified data corresponding to the modification record closest to the current time in each data record set is recorded as difference data, and the difference data is obtained.