WO2023109245A1

WO2023109245A1 - Data backup method, apparatus and system and non-volatile readable storage medium

Info

Publication number: WO2023109245A1
Application number: PCT/CN2022/121460
Authority: WO
Inventors: 刘海伟; 刘为峰; 冯振
Original assignee: 广东浪潮智慧计算技术有限公司
Priority date: 2021-12-17
Filing date: 2022-09-26
Publication date: 2023-06-22
Also published as: CN114328014A

Abstract

A data backup method, apparatus and system, and a non-volatile readable storage medium, the method applied to a cloud platform comprising: receiving a backup request sent by a third party for backing up a virtual machine to be backed up, and according to the backup request, determining whether the virtual machine to be backed up is being backed up for the first time; if it is determined that the virtual machine to be backed up is not being backed up for the first time, creating a first snapshot for the virtual machine to be backed up, and according to the first snapshot, obtaining data change information of the virtual machine to be backed up from the last backup to the current backup; and sending the data change information and information of the first snapshot to the third party so that the third party backs up in a LAN-free mode the data corresponding to the data change information in the first snapshot. The technical solution realizes an incremental backup of the virtual machine on the basis of the data change information to reduce the backup data volume, thereby improving backup efficiency. Backing up in a LAN-free mode also changes the link of backup traffic, thus shortening the backup duration and enhancing backup efficiency.

Description

A data backup method, device, system and non-volatile readable storage medium

Cross References to Related Applications

This application claims the priority of the Chinese patent application submitted to the China Patent Office on December 17, 2021 with the application number 202111555055.5, and the application name is "A data backup method, device, system, and readable storage medium", the entire content of which Incorporated in this application by reference.

technical field

The present application relates to the field of cloud platform technology, and more specifically, to a data backup method, device, system and non-volatile readable storage medium.

Background technique

With the development of cloud computing, more and more application systems are migrated to the cloud. After the enterprise goes to the cloud, the user's data backup is also different from the traditional protection backup.

Currently, when the cloud platform manages a third-party backup appliance, it is usually the third party that initiates the backup process, and the data flows from the production storage pool through the cloud platform management network to the third-party backup appliance. In practical applications, the backup data is usually relatively large. This backup method has a great impact on the cloud platform management network. At the same time, the backup time is relatively long and the backup efficiency is relatively low. In addition, since the current third party usually backs up the virtual disks of the cloud platform in full, the number of backups is relatively large and the backup efficiency is relatively low.

To sum up, how to improve the third party's backup efficiency of data in the cloud platform is a technical problem to be solved urgently by those skilled in the art.

Contents of the invention

In view of this, the purpose of the present application is to provide a data backup method, device, system and non-volatile readable storage medium, which are used to improve the third party's backup efficiency of data in the cloud platform.

In order to achieve the above object, the application provides the following technical solutions:

A data backup method applied to a cloud platform, comprising:

Receive a backup request for backing up the virtual machine to be backed up sent by a third party, and judge whether it is the first backup of the virtual machine to be backed up according to the backup request;

If it is determined that it is not the first backup of the virtual machine to be backed up, a first snapshot is created for the virtual machine to be backed up, and the data change information of the virtual machine to be backed up from the last backup to the current backup is obtained according to the first snapshot;

The data change information and the information of the first snapshot are sent to a third party, and the third party backs up the data corresponding to the data change information in the first snapshot in a LAN-free manner according to the information of the first snapshot.

Preferably, if it is determined to be the first backup of the virtual machine to be backed up, it also includes:

Create a second snapshot for the virtual machine to be backed up, and send a message that the snapshot is successfully created to a third party, and the third party will back up all the data in the second snapshot in a LAN-free manner based on the information of the second snapshot contained in the message .

Preferably, when creating the second snapshot for the virtual machine to be backed up, it also includes:

Create a corresponding bitmap for each virtual disk in the virtual machine to be backed up;

Correspondingly, the message includes the bitmap corresponding to each virtual disk, and the bitmap information contained in the bitmap is all valid, so that the third party can compare the information in the second snapshot according to the valid bitmap information contained in the bitmap corresponding to each virtual disk. Data is backed up.

Preferably, after creating corresponding bitmaps for each virtual disk in the virtual machine to be backed up, it also includes:

When the data of the virtual disk changes, the bitmap information at the corresponding position in the bitmap corresponding to the virtual disk is marked as valid;

Obtain the data change information of the virtual machine to be backed up from the last backup to the current backup according to the first snapshot, including:

Obtain the data change information of the virtual machine to be backed up from the last backup to the current backup according to the first snapshot and the bitmap corresponding to each virtual disk;

After the third party completes the backup of the data corresponding to the data change information in the first snapshot, it also includes:

Clear the bitmap information included in the bitmap corresponding to each virtual disk.

Preferably, after the third party finishes backing up the data corresponding to the data change information in the first snapshot, it further includes:

The first snapshot and the information of the first snapshot are deleted.

Preferably, the data change information and the information of the first snapshot are sent to a third party, including:

Send the data change information and the information of the first snapshot to the third party through the API.

Preferably, the virtual disk is a virtual disk in QCOW2 format or RAW format.

Preferably, it is judged according to the backup request whether it is the first backup of the virtual machine to be backed up, including:

Whether it is the first backup of the virtual machine to be backed up is determined according to the number of times the UUID of the virtual machine to be backed up included in the backup request is received.

Preferably, sending a message that the snapshot is successfully created to the third party also includes:

The message includes a bitmap corresponding to each virtual disk included in the virtual machine to be backed up.

When it is determined that it is the first backup of the virtual machine to be backed up, the bitmap information contained in each created bitmap is invalid by default;

The bitmap information contained in the bitmap sent to the third party is all set to valid.

The message includes information about the bitmap corresponding to each virtual disk and information about the virtual disk to be backed up.

Preferably, acquiring the data change information of the virtual machine to be backed up from the last backup to the current backup according to the first snapshot further includes:

When it is determined that it is the first backup of the virtual machine to be backed up, the data change information includes bitmap information included in the bitmap corresponding to each virtual disk.

Preferably, after obtaining the data change information of the virtual machine to be backed up from the last backup to the current backup according to the first snapshot and the bitmap corresponding to each virtual disk, it also includes:

The bitmap information included in the bitmap corresponding to each virtual disk is sent to a third party.

Preferably, after the third party finishes backing up the data in the second snapshot, it also includes:

The second snapshot and the information of the second snapshot are deleted.

Preferably, the data change information and the information of the first snapshot are sent to a third party through the API, which also includes:

If the data change information is recorded in a bitmap, the bitmap information included in the bitmap corresponding to the virtual disk is sent to a third party through the API.

A data backup method, applied to a third party, including:

Send a backup request to the cloud platform for backing up the virtual machine to be backed up. The cloud platform determines that it is not the first backup of the virtual machine to be backed up, and creates a first snapshot for the virtual machine to be backed up, and obtains the virtual machine to be backed up according to the first snapshot. The data change information between the last backup and the current backup of the machine;

The data change information and the information of the first snapshot sent by the cloud platform are received, and the data corresponding to the data change information in the first snapshot is backed up in a LAN-free manner according to the information of the first snapshot.

A data backup device applied to a cloud platform, comprising:

The receiving module is configured to receive a backup request sent by a third party for backing up the virtual machine to be backed up, and judge whether it is the first backup of the virtual machine to be backed up according to the backup request;

The obtaining module is used to create a first snapshot for the virtual machine to be backed up if it is not the first backup of the virtual machine to be backed up in the backup request, and obtain data between the last backup and the current backup of the virtual machine to be backed up according to the first snapshot change information;

The first sending module is used to send the data change information and the information of the first snapshot to a third party, and the third party uses the LAN-free method to perform data corresponding to the data change information in the first snapshot according to the information of the first snapshot. backup.

A data backup device applied to a third party, comprising:

The second sending module is used to send a backup request to the cloud platform for backing up the virtual machine to be backed up, and the cloud platform determines that it is not the first backup of the virtual machine to be backed up, and creates a first snapshot for the virtual machine to be backed up, and according to The first snapshot obtains the data change information of the virtual machine to be backed up from the last backup to the current backup;

The first backup module is used to receive the data change information and the information of the first snapshot sent by the cloud platform, and use the LAN-free method to back up the data corresponding to the data change information in the first snapshot according to the information of the first snapshot.

A data backup system, including a cloud platform and a third party, wherein:

The third party is used to send a backup request to the cloud platform for backing up the virtual machine to be backed up; receive the data change information and the information of the first snapshot sent by the cloud platform, and use the LAN-free method to make the first snapshot according to the information of the first snapshot Back up the data corresponding to the data change information in the database;

The cloud platform is used to judge whether it is the first backup of the virtual machine to be backed up according to the backup request; if it is determined that it is not the first backup of the virtual machine to be backed up, create a first snapshot for the virtual machine to be backed up, and obtain the backup to be backed up according to the first snapshot The data change information of the virtual machine from the last backup to the current backup; the data change information and the first snapshot information are sent to a third party.

A non-volatile readable storage medium. A computer program is stored in the non-volatile readable storage medium. When the computer program is executed by a processor, the steps of any one of the above data backup methods are implemented.

The present application provides a data backup method, device, system, and non-volatile readable storage medium, wherein the method applied to the cloud platform includes: receiving a backup request sent by a third party for backing up a virtual machine to be backed up, and according to the backup Request to determine whether it is the first backup of the virtual machine to be backed up; if it is determined that it is not the first backup of the virtual machine to be backed up, create the first snapshot for the virtual machine to be backed up, and obtain the virtual machine to be backed up from the last backup to Data change information between current backups; send the data change information and the information of the first snapshot to a third party, and the third party uses the LAN-free method to process the data corresponding to the data change information in the first snapshot based on the information of the first snapshot Make a backup.

In the above technical solution disclosed in this application, when the cloud platform determines according to the received backup request that it is not the first backup of the virtual machine to be backed up, it creates a first snapshot for the virtual machine to be backed up, and obtains the virtual machine to be backed up according to the first snapshot Data change information from the last backup to the current backup, and send the data change information and the information of the first snapshot created to the third party, so that the third party can use the LAN-free method to make the first snapshot according to the information of the first snapshot The data corresponding to the data change information is backed up. Through the above process, it can be seen that the application not only realizes the incremental backup of the virtual machine based on the data change information by obtaining the data change information, so as to reduce the amount of backup data, thereby improving the backup efficiency. Moreover, the link of the backup traffic is changed by performing backup in the LAN-free mode, shortening the backup time and improving the backup efficiency.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only It is an embodiment of the present application, and those skilled in the art can also obtain other drawings according to the provided drawings without creative work.

Fig. 1 is a flow chart of a third party backing up a virtual machine in a cloud platform in the prior art;

FIG. 2 is a flow chart of a data backup method applied to a cloud platform provided by an embodiment of the present application;

FIG. 3 is a schematic structural diagram of a data backup system provided by an embodiment of the present application;

Fig. 4 is the relationship diagram among virtual disk, bitmap, and backup disk provided by the embodiment of the present application;

FIG. 5 is a flow chart of a data backup method applied to a third party provided by an embodiment of the present application;

FIG. 6 is a schematic structural diagram of a data backup device applied to a cloud platform provided by an embodiment of the present application;

FIG. 7 is a schematic structural diagram of a data backup device applied to a third party provided by an embodiment of the present application;

FIG. 8 is a schematic structural diagram of an electronic device provided in an embodiment of the present application;

FIG. 9 is a schematic structural diagram of a non-volatile readable storage medium provided by an embodiment of the present application.

Detailed ways

Referring to FIG. 1 , it shows a flow chart of a third party backing up a virtual machine in a cloud platform in the prior art, wherein the third party initiates the backup process, and the data flow flows from the production storage pool to the third party through the cloud platform management network Backup all-in-one machine, however, because the cloud platform contains many virtual machines, the amount of data that the third party needs to back up is relatively large, so the existing backup method will have a great impact on the cloud platform management network, and When the third party backs up the virtual machines on the cloud platform, it always backs up all the virtual machines in the production storage pool on the cloud platform every time. Therefore, the number of backups is large, the backup time is relatively long, and the backup efficiency is relatively high. Low.

To this end, the present application provides a data backup method, device, device and non-volatile readable storage medium, which are used to improve the backup efficiency of data in the cloud platform by a third party.

The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

Referring to FIG. 2 and FIG. 3 , where FIG. 2 shows a flow chart of a data backup method applied to a cloud platform provided by an embodiment of the present application, and FIG. 3 shows a data backup system provided by an embodiment of the present application Schematic diagram of the structure. A data backup method provided in an embodiment of the present application, applied to a cloud platform, may include:

S11: Receive a backup request for backing up the virtual machine to be backed up sent by a third party, and judge whether it is the first backup of the virtual machine to be backed up according to the backup request; if it is determined that it is not the first backup of the virtual machine to be backed up, execute step S12.

In this application, the cloud platform refers to the cloud computing platform provider, which contains a production storage pool, which is a storage pool managed by the cloud platform and used to deploy virtual machines and virtual disks of the cloud platform in the customer's production environment , wherein, the virtual machine mentioned in this application can specifically refer to a virtual machine under the KVM (Kernel-based Virtual Machine, an open source system virtualization module) virtualization architecture. The third party specifically refers to a third-party storage and backup manufacturer, which is usually deployed in the customer environment in the form of a backup all-in-one machine, and the third-party backup all-in-one machine is the hardware device of the third-party storage and backup vendor, used for the customer's virtual disk data Backup, which carries the virtual machine backed up from the production storage pool and the virtual disk in the virtual machine. The third party includes a third-party backup/recovery management module, which is a third-party software The management module provides data backup and recovery functions. In this application, it can communicate with the cloud platform externally, query the data changes of a certain virtual disk between two adjacent backups, etc., and internally communicate with the backup all-in-one device. Communication, issue data backup/restore instructions, and perform data backup.

Specifically, when a third party wants to back up the virtual machine to be backed up, it can generate a backup request for backing up the virtual machine to be backed up, wherein the backup request includes the uuid (Universally Unique Identifier, Universally Unique Identifier) of the virtual machine to be backed up ) and other relevant information (such as the id of the first snapshot to be created by the cloud platform, etc.), specifically, the backup request can be as follows:

{

"uuid": string, // uuid of virtual machine to be backed up

"snap_id":string//id of the first snapshot

}

Wherein, the virtual machine to be backed up mentioned here may specifically be a virtual machine to be backed up under the KVM virtualization architecture.

After the third party generates the backup request, it can send the backup request to the cloud platform through the API of the cloud platform. After the cloud platform receives the backup request for backing up the virtual machine to be backed up sent by the third party, it can judge whether it is the first backup of the virtual machine to be backed up according to the backup request, specifically, according to the The number of times of the uuid of the virtual machine is used to determine whether it is the first backup of the virtual machine to be backed up. For example, if the backup request containing the uuid of the virtual machine to be backed up is received for the first time, it is determined to be the first backup of the virtual machine to be backed up. If it is not the first time that the backup request containing the uuid of the virtual machine to be backed up is received, it is determined that it is not the first backup of the virtual machine to be backed up. At this time, in order to reduce the amount of data backup by the third party, the cloud platform can perform steps S12.

S12: Create a first snapshot for the virtual machine to be backed up, and acquire data change information of the virtual machine to be backed up from the last backup to the current backup according to the first snapshot.

When it is determined that it is not the first backup of the virtual machine to be backed up, a first snapshot named snap_id is created for the virtual machine to be backed up by uuid according to the backup request, so as to use the first snapshot to record the current state and data of the virtual machine, so that The third party can perform data backup based on the created first snapshot, that is, provide another data access channel for the third party, so as to avoid impact on the business of the virtual machine in the cloud platform. After creating the first snapshot, the cloud platform can obtain the data change information of the virtual machine to be backed up from the last backup to the current backup (that is, the backup performed when receiving the backup request sent by the third party) according to the first snapshot , for example, according to the first snapshot created by the last backup of the virtual machine to be backed up and the first snapshot created by the current backup, the data change information of the virtual machine to be backed up from the last backup to the current backup can be obtained. Of course, it can also be based on The first snapshot uses other methods to obtain data change information of the virtual machine to be backed up from the last backup to the current backup. Wherein, the data change information mentioned here may specifically be which data block or data blocks of which virtual disk or virtual disks of the virtual machine change.

S13: Send the data change information and the information of the first snapshot to a third party, and the third party backs up the data corresponding to the data change information in the first snapshot in a LAN-free manner according to the information of the first snapshot.

After the cloud platform acquires the data change information between the last backup and the current backup of the virtual machine to be backed up, the data change information and the information of the first snapshot created in step S12 (specifically including the name of the first snapshot) can be sent to The third party, specifically the third-party backup/restore management module that can be sent to. After receiving the above two types of information, the third party can use the LAN-free (no need to back up through the local area network) method to perform data corresponding to the data change information in the first snapshot created on the cloud platform according to the information of the first snapshot. Backup, wherein, the information of the first snapshot can enable a third party to find the first snapshot corresponding to the virtual machine to be backed up in the cloud platform accordingly, and the data change information can make the third-party cloud platform only back up the virtual machine to be backed up from the last time Back up the changed data between the current backup and the third-party cloud platform, which means that the third-party cloud platform can realize incremental backup without having to perform a full backup of the virtual machine in the cloud platform every time, so as to reduce the amount of backup data and shorten the backup time. Time-consuming and improve backup efficiency, the LAN-free method is to directly copy data from the production storage pool in the cloud platform to the third-party backup all-in-one machine through SAN (storage area network), that is, use SAN to copy data between the production storage pool and the third-party backup machine on the cloud platform. A high-speed data transmission link is established between the three-party backup all-in-one machines to shorten the backup time and improve backup efficiency by changing the link of backup traffic.

It should be noted that when the cloud platform needs to perform backup and recovery from a third party, it can also use the LAN-free method to recover data from the third party, so as to shorten the time-consuming of data recovery and improve backup efficiency.

In a data backup method provided by the embodiment of the present application, in step S11, if it is determined that this is the first backup of the virtual machine to be backed up, step S14 is executed:

S14: Create a second snapshot for the virtual machine to be backed up, and send a message that the snapshot is successfully created to a third party, and the third party uses LAN-free method to save all data in the second snapshot according to the information of the second snapshot contained in the message Make a backup.

In this application, when the cloud platform executes step S11, if it is determined according to the backup request that it is the first backup of the virtual machine to be backed up, at this time, the cloud platform creates a second snapshot for the virtual machine to be backed up, specifically, according to the backup Request to create a second snapshot named snap_id for the virtual machine with uuid to be backed up. After the second snapshot is successfully created, the cloud platform may send a message that the snapshot is successfully created to the third party, wherein the message may include information about the second snapshot (specifically including the name of the created second snapshot). After the third party receives the message that the snapshot is successfully created sent by the cloud platform, it can use the LAN-free method to back up all the data in the second snapshot according to the information of the second snapshot contained in the message, so that when the first backup At this time, the virtual machine to be backed up can be fully backed up, and based on this, it can be used as a basis for subsequent non-initial backups, so that the data in the backup all-in-one machine can be consistent with the data in the production storage pool on the cloud platform. Wherein, the information of the second snapshot can enable the third party to find the second snapshot corresponding to the virtual machine to be backed up in the cloud platform. Compared with the existing cloud platform management network for data backup, this application adopts the LAN-free method to change the link of the backup traffic, shorten the backup time, and improve the backup efficiency.

A data backup method provided in an embodiment of the present application may further include: when creating a second snapshot for the virtual machine to be backed up:

Correspondingly, the message includes the bitmap corresponding to each virtual disk, and the bitmap information contained in the bitmap is all valid, so that the third party can compare the information in the second snapshot according to the valid bitmap information contained in the bitmap corresponding to each virtual disk. All data is backed up.

In this application, the cloud platform may create a bitmap (bitmap) for each virtual disk in the virtual machine to be backed up while creating the second snapshot of the virtual machine to be backed up. In addition, when it is determined that it is the first backup of the virtual machine to be backed up, the bitmap information contained in each created bitmap is invalid by default (invalid means that the data block corresponding to the bitmap information has not changed, correspondingly, valid means represents that the data block corresponding to the bitmap information has changed) and the created bitmap can be stored in memory, wherein each bitmap contains multiple bitmap information, and each bitmap information is related to the data in the corresponding virtual disk corresponding to the block. In the bitmap information, 1 can be set as valid, and 0 can be set as invalid (of course, the numbers corresponding to valid and invalid can also be changed according to actual needs. In this application, 1 is valid and 0 is invalid as an example for illustration. ).

On the basis of the above, the message that the cloud platform sends the third party a successful snapshot creation may also include a bitmap corresponding to each virtual disk contained in the virtual machine to be backed up, wherein, when sending the bitmap to the third party, in order to make the Based on this, the third party can back up all the data in the second snapshot, that is, all the data in the virtual disks contained in the virtual machine to be backed up can be backed up, and the bitmap information contained in the bitmap sent to the third party is all set to It is valid. It should be noted that after the bitmap is created, the bitmap information contained in the bitmap stored in the memory is still all invalid by default, so as to record data changes based on the bitmap, but the bitmap sent to a third party All the bitmap information contained in is set to valid, so that a third party can perform a full backup accordingly. In addition, the information about the bitmap and the information about the virtual disk to be backed up may also be included in the successful snapshot creation message sent to the third party, as follows:

{

"disk_uuid": string, //virtual disk uuid

"block_len": integer, //bitmap represents the block length, such as 2M a block

"bit_num": integer, //bitmap bit number, 1 bit represents a block, 0 represents unallocated (that is, invalid), 1 represents allocated (that is, valid)

"bitmap":string//bitmap string representation, when backing up for the first time, its corresponding bitmap information is "1111 1111 1111 1111", and the bits from left to right are valid for blocks with sequence numbers from low to high sex

}

Among them, the string representation of the above bitmap is to convert the bitmap information contained in the bitmap corresponding to the virtual disk into a string representation, one character corresponds to a bitmap information, and the string representation of the bitmap at the first backup All 1s (i.e. valid).

After the third party receives the aforementioned information, according to the effective bitmap information contained in the bitmap corresponding to the second snapshot and each virtual disk (or according to the character string expression form of the bitmap), the third party adopts the LAN-free method for the second The data in the snapshot is backed up. Since the bitmap information contained in the bitmap corresponding to each virtual disk is valid, the third party can perform a full backup of each virtual disk corresponding to the virtual machine to be backed up based on this, that is, the first All data in the second snapshot is backed up.

A data backup method provided in the embodiment of the present application may further include, after creating corresponding bitmaps for each virtual disk in the virtual machine to be backed up:

Obtaining the data change information of the virtual machine to be backed up from the last backup to the current backup according to the first snapshot may include:

After the third party finishes backing up the data corresponding to the data change information in the first snapshot, it may also include:

In this application, after the cloud platform creates corresponding bitmaps for each virtual disk in the virtual machine to be backed up, the bitmap corresponding to the virtual disk can be used to record the data changes of the virtual disk. Specifically, when the data of the virtual disk When a change occurs, the bitmap information of the corresponding position in the bitmap corresponding to the virtual disk (the bitmap mentioned here is specifically the bitmap stored in the memory) is changed from the default invalid to valid, so as to use the bitmap information to record Data changes on virtual disks.

Correspondingly, when the cloud platform obtains the data change information of the virtual machine to be backed up from the last backup to the current backup according to the first snapshot, it can obtain the virtual machine to be backed up from the first snapshot and the bitmap corresponding to each virtual disk. The data change information between the first backup and the current backup. Specifically, when using the bitmap corresponding to the virtual disk to record the data change of the virtual disk, the cloud platform can record up to the first snapshot created, and then the cloud platform can use this. The bitmap corresponding to each virtual disk at the time obtains the data change information of the virtual machine to be backed up from the last time to the current backup. Specifically, the cloud platform can use the bitmap information included in the bitmap corresponding to each virtual disk as the data change information.

Correspondingly, when the cloud platform sends the data change information to the third party, it can specifically send the bitmap information contained in the bitmap corresponding to each virtual disk to the third party. Of course, it can also send other information to the third party at the same time. As follows:

{

"disk_uuid": string, //virtual disk uuid

"block_len": integer, //bitmap represents the block length, such as 2M a block

"bit_num": integer, //bitmap bit number, 1 bit represents a block, 0 represents unallocated, 1 represents allocated

"bitmap":string//The string representation of bitmap, for example: the bitmap information contained in a bitmap corresponding to a virtual disk is "1001 0001 1000 0000", and the bits from left to right correspond to the sequence numbers from low to low to high block effectiveness

}

On the basis of the above, the third party can back up the data corresponding to the valid bitmap information in the first snapshot according to the bitmap information contained in the bitmap corresponding to the virtual disk, so as to realize only changes between two adjacent backups backup data to reduce the amount of data backup. 4 for details, which shows the relationship diagram between the virtual disk, bitmap, and backup disk provided by the embodiment of the present application, assuming that the bitmap information contained in the bitmap corresponding to a certain virtual disk is 0111 0010 0000, Then, when the third party performs backup, it only backs up the data at the corresponding position in the virtual disk where the bitmap information is 1.

After the third party completes the backup of the data corresponding to the data change information in the first snapshot, it can send a notification of the completion of the backup to the cloud platform, and the cloud platform learns that the third party has completed the backup of the data corresponding to the data change information in the first snapshot. After backup, the bitmap information contained in the bitmap corresponding to each virtual disk can be cleared (that is, all are set to default invalid), so that the created bitmap can be reused to record the data changes of the corresponding virtual disk, and at the same time avoid subsequent Affects the backup of the virtual machine to be backed up.

A data backup method provided by an embodiment of the present application may further include, after the third party completes the backup of the data corresponding to the data change information in the first snapshot:

The first snapshot and the information of the first snapshot are deleted.

In this application, after the cloud platform learns that the third party has completed the backup of the data corresponding to the data change information in the first snapshot, it can delete the created first snapshot and the information of the first snapshot to avoid giving subsequent Back up backups of virtual machines with impact while avoiding resource hogs.

In addition, after the third party completes the backup of all the data in the second snapshot, the second snapshot and the information of the second snapshot can be deleted, so as not to affect the subsequent backup of the virtual machine to be backed up, and avoid resource occupation .

A data backup method provided in an embodiment of the present application, sending data change information and first snapshot information to a third party may include:

Send the data change information and the information of the first snapshot to a third party through API (Application Program Interface, Application Program Interface).

In this application, the cloud platform can provide external services in the form of Restful API, that is, it can provide APIs to third parties, so that the cloud platform and third parties can back up information through APIs (specifically, the data changes mentioned later information, snapshot information), so that a third party can perform data backup on the virtual machines in the production storage pool of the cloud platform. Correspondingly, when the third-party backup/restore management module in the third party communicates with the cloud platform externally, it may specifically communicate through the API of the cloud platform. That is to say, in this application, the cloud platform can send the data change information and the information of the first snapshot to a third party through the API, wherein, when recording the data change information with a bitmap, the cloud platform can also directly send the information corresponding to the virtual disk The bitmap information contained in the bitmap is sent to a third party through the API, so that the third party can back up the virtual disk in the cloud platform.

In addition, when the cloud platform sends a message that the snapshot is successfully created to the third party, it can also send a message that the snapshot is successfully created to the third party through the API.

In the data backup method provided in the embodiment of the present application, the virtual disk may be a virtual disk in QCOW2 format or RAW format.

In this application, the virtual disk in the cloud platform can specifically be a virtual disk based on the general QCOW2 format or RAW (unprocessed) format, that is, a third party can back up the virtual disks in these formats in the cloud platform to improve Efficiency of backups of virtual disks in these formats.

The embodiment of the present application also provides another data backup method, which is applied to a third party. Referring to FIG. 5 , it shows a flow chart of a data backup method applied to a third party provided by the embodiment of the present application, which may include :

S21: Send a backup request to the cloud platform for backing up the virtual machine to be backed up. The cloud platform determines that it is not the first backup of the virtual machine to be backed up, and creates a first snapshot for the virtual machine to be backed up, and obtains the virtual machine to be backed up according to the first snapshot. Back up the data change information of the virtual machine from the last backup to the current backup;

S22: Receive the data change information and the information of the first snapshot sent by the cloud platform, and use the LAN-free method to back up the data corresponding to the data change information in the first snapshot according to the information of the first snapshot.

A data backup method provided in an embodiment of the present application may further include:

Receiving a message that the snapshot is successfully created sent by the cloud platform; wherein, the message is sent by the cloud platform after determining that it is the first backup of the virtual machine to be backed up and creating a second snapshot for the virtual machine to be backed up;

According to the information of the second snapshot included in the message, all data in the second snapshot is backed up in a LAN-free manner.

In the data backup method provided by the embodiment of the present application, the received message includes that the bitmap information corresponding to each virtual disk is a valid bitmap;

Correspondingly, according to the information of the second snapshot contained in the message, all data in the second snapshot is backed up in a LAN-free manner, including:

According to the effective bitmap information included in the second snapshot and the bitmap corresponding to each virtual disk, the data in the second snapshot is backed up in a LAN-free manner.

In the data backup method provided by the embodiment of the present application, the received data change information sent by the cloud platform includes the bitmap corresponding to each virtual disk in the virtual machine to be backed up, wherein the valid bitmap information contained in the bitmap indicates that the virtual The corresponding data in the disk has changed from the last backup to the current backup.

For the description of the relevant parts of a data backup method applied to a third party provided in the embodiment of the present application, please refer to the detailed description of the corresponding part in the data backup method applied to the cloud platform provided in the embodiment of the present application, and will not be repeated here repeat.

The embodiment of the present application also provides a data backup device, which is applied to the cloud platform. Referring to FIG. 6, it shows a schematic structural diagram of a data backup device applied to the cloud platform provided by the embodiment of the present application, which may include:

The receiving module 61 is configured to receive a backup request sent by a third party for backing up the virtual machine to be backed up, and judge whether it is the first backup of the virtual machine to be backed up according to the backup request;

The acquisition module 62 is configured to create a first snapshot for the virtual machine to be backed up if it is not the first backup of the virtual machine to be backed up in the backup request, and obtain the time between the last backup and the current backup of the virtual machine to be backed up according to the first snapshot. data change information;

The first sending module 63 is used to send the data change information and the information of the first snapshot to a third party, and the data corresponding to the data change information in the first snapshot is processed by the third party in a LAN-free manner according to the information of the first snapshot Make a backup.

A data backup device provided in an embodiment of the present application may further include:

The first creation module is used to create a second snapshot for the virtual machine to be backed up if it is determined that it is the first backup of the virtual machine to be backed up, and send a message that the snapshot is successfully created to a third party, and the third party uses the first snapshot included in the message For the information of the second snapshot, all data in the second snapshot is backed up in a LAN-free manner.

The second creation module is used to create a corresponding bitmap for each virtual disk in the virtual machine to be backed up when creating a second snapshot for the virtual machine to be backed up;

The marking module is used to mark the bitmap information at the corresponding position in the bitmap corresponding to the virtual disk as valid after the corresponding bitmap is created for each virtual disk in the virtual machine to be backed up, when the data of the virtual disk changes;

Acquisition module 62 may include:

An acquisition unit, configured to acquire the data change information of the virtual machine to be backed up from the last backup to the current backup according to the first snapshot and the bitmap corresponding to each virtual disk;

Can also include:

The clearing module is configured to clear the bitmap information included in the bitmap corresponding to each virtual disk after the third party completes the backup of the data corresponding to the data change information in the first snapshot.

The deletion module is used to delete the first snapshot and the information of the first snapshot after the third party completes the backup of the data corresponding to the data change information in the first snapshot.

In a data backup device provided in an embodiment of the present application, the first sending module 63 may include:

The sending unit is configured to send the data change information and the information of the first snapshot to a third party through the API.

In the data backup device provided in the embodiment of the present application, the virtual disk may be a virtual disk in QCOW2 format or RAW format. For the description of the relevant parts of a data backup device applied to the cloud platform provided by the embodiment of the present application, please refer to the detailed description of the corresponding part of the data backup method applied to the cloud platform provided by the embodiment of the present application, which will not be repeated here repeat.

The embodiment of the present application also provides another data backup device, which is applied to a third party. Refer to FIG. 7, which shows a schematic structural diagram of a data backup device applied to a third party provided in the embodiment of the present application, which may include:

The second sending module 71 is configured to send to the cloud platform a backup request for backing up the virtual machine to be backed up, and the cloud platform determines that it is not the first backup of the virtual machine to be backed up, and creates a first snapshot for the virtual machine to be backed up, and Acquiring the data change information of the virtual machine to be backed up from the last backup to the current backup according to the first snapshot;

The first backup module 72 is configured to receive the data change information and the information of the first snapshot sent by the cloud platform, and use the LAN-free method to back up the data corresponding to the data change information in the first snapshot according to the information of the first snapshot.

The receiving module is configured to receive a message that the snapshot is successfully created sent by the cloud platform; wherein, the message is determined by the cloud platform to be the first backup of the virtual machine to be backed up, and is sent after creating a second snapshot for the virtual machine to be backed up;

The second backup module is configured to back up all data in the second snapshot in a LAN-free manner according to the information of the second snapshot included in the message.

In the data backup device provided by the embodiment of the present application, the received message includes that the bitmap information corresponding to each virtual disk is a valid bitmap;

Correspondingly, the second backup module may include:

The backup unit is configured to back up the data in the second snapshot in a LAN-free manner according to the second snapshot and valid bitmap information included in the bitmap corresponding to each virtual disk.

In the data backup device provided by the embodiment of the present application, the received data change information sent by the cloud platform includes the bitmap corresponding to each virtual disk in the virtual machine to be backed up, wherein the valid bitmap information contained in the bitmap indicates that the virtual The corresponding data in the disk has changed from the last backup to the current backup.

For the description of the relevant parts of a data backup device applied to a third party provided in the embodiment of the present application, please refer to the detailed description of the corresponding part in the data backup method applied to the cloud platform provided in the embodiment of the present application, and will not be repeated here repeat.

The embodiment of the present application also provides a data backup system, which may include a cloud platform and a third party, wherein:

For the description of the relevant parts of a data backup system provided in the embodiment of the present application, refer to the specific description of the relevant parts of the data backup method applied to the cloud platform provided in the embodiment of the present application, and details are not repeated here.

The embodiment of the present application also provides an electronic device, see FIG. 8, which shows a schematic structural diagram of an electronic device provided in the embodiment of the present application, which includes a processor 810 and a memory 820, and the memory 820 includes a non-volatile A non-volatile readable storage medium 830, and a computer program 832 stored on the non-volatile readable storage medium 830 and operable on the processor. When the computer program 832 is executed by the processor, any of the above-mentioned The steps of the data backup method applied to the cloud platform and/or the steps of the above-mentioned data backup method applied to a third party.

The embodiment of the present application also provides a non-volatile readable storage medium, see FIG. 9, which shows a schematic structural diagram of a non-volatile readable storage medium provided in the embodiment of the present application. A computer program 932 is stored in the readable storage medium 930, and when the computer program 932 is executed by the processor, it implements the steps of any of the above-mentioned data backup methods applied to the cloud platform and/or the above-mentioned data backup method applied to a third party. step.

The non-volatile readable storage medium may include: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk, etc. A medium that stores program code.

For the description of the relevant parts of a non-volatile readable storage medium provided in the embodiment of the present application, please refer to the specific description of the relevant parts in the data backup method applied to the cloud platform provided in the embodiment of the present application, which will not be repeated here. repeat.

It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is a relationship between these entities or operations. There is no such actual relationship or order between them. Furthermore, the terms "comprising", "comprising" or any other variation thereof are intended to cover a non-exclusive inclusion such that elements inherent in a process, method, article, or apparatus including a series of elements are included. Without further limitations, an element defined by the phrase "comprising a ..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus that includes the element. In addition, the parts of the technical solutions provided in the embodiments of the present application that are consistent with the implementation principles of the corresponding technical solutions in the prior art are not described in detail, so as not to repeat them too much.

The above description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the application. Therefore, the present application will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

A data backup method, characterized in that it is applied to a cloud platform, comprising:

receiving a backup request for backing up the virtual machine to be backed up sent by a third party, and judging whether it is the first backup of the virtual machine to be backed up according to the backup request;

If it is determined that it is not the first backup of the virtual machine to be backed up, create a first snapshot for the virtual machine to be backed up, and obtain the time between the last backup and the current backup of the virtual machine to be backed up according to the first snapshot data change information;

Send the data change information and the information of the first snapshot to the third party, and the third party uses the LAN-free method to compare the information in the first snapshot with the information of the first snapshot according to the information of the first snapshot. The data corresponding to the data change information is backed up.
The data backup method according to claim 1, wherein if it is determined that it is the first backup of the virtual machine to be backed up, further comprising:

Create a second snapshot for the virtual machine to be backed up, and send a message that the snapshot is successfully created to the third party, and the third party uses the LAN-free method according to the information of the second snapshot contained in the message All data in the second snapshot is backed up.
The data backup method according to claim 2, wherein when creating a second snapshot for the virtual machine to be backed up, further comprising:

Create a corresponding bitmap for each virtual disk in the virtual machine to be backed up;

Correspondingly, the message includes a bitmap corresponding to each of the virtual disks, and the bitmap information included in the bitmap is all valid, so that the third party can The bitmap information in the second snapshot is backed up.
The data backup method according to claim 3, further comprising: after creating corresponding bitmaps for each virtual disk in the virtual machine to be backed up:

When the data of the virtual disk changes, mark the bitmap information at the corresponding position in the bitmap corresponding to the virtual disk as valid;

Obtaining the data change information of the virtual machine to be backed up from the last backup to the current backup according to the first snapshot, including:

Acquire data change information of the virtual machine to be backed up from the last backup to the current backup according to the first snapshot and the bitmap corresponding to each of the virtual disks;

After the third party finishes backing up the data corresponding to the data change information in the first snapshot, the method further includes:

The bitmap information included in the bitmap corresponding to each virtual disk is cleared.
The data backup method according to claim 4, wherein after the third party completes the backup of the data corresponding to the data change information in the first snapshot, further comprising:

Delete the first snapshot and the information of the first snapshot.
The data backup method according to any one of claims 1 to 5, wherein sending the data change information and the information of the first snapshot to the third party includes:

sending the data change information and the information of the first snapshot to the third party through an API.
The data backup method according to claim 6, wherein the virtual disk is a virtual disk in QCOW2 format or RAW format.
The data backup method according to claim 1, wherein judging whether it is the first backup of the virtual machine to be backed up according to the backup request comprises:

Whether it is the first backup of the virtual machine to be backed up is determined according to the number of times of the uuid of the virtual machine to be backed up included in the received backup request.
The data backup method according to claim 3, wherein, sending the message that the snapshot is successfully created to the third party further includes:

The message includes a bitmap corresponding to each virtual disk included in the virtual machine to be backed up.
The data backup method according to claim 3, wherein, if it is determined that it is the first backup of the virtual machine to be backed up, further comprising:

When it is determined that it is the first backup of the virtual machine to be backed up, the bitmap information contained in each created bitmap is invalid by default;

All bitmap information included in the bitmap sent to the third party is set to be valid.
The data backup method according to claim 3, wherein, sending the message that the snapshot is successfully created to the third party further includes:

The message includes information about the bitmap corresponding to each virtual disk and information about the virtual disk to be backed up.
The data backup method according to claim 3, wherein acquiring the data change information of the virtual machine to be backed up from the last backup to the current backup according to the first snapshot further includes:

When it is determined that it is the first backup of the virtual machine to be backed up, the data change information includes bitmap information included in the bitmap corresponding to each virtual disk.
The data backup method according to claim 4, wherein, after obtaining the data change information of the virtual machine to be backed up from the last backup to the current backup according to the first snapshot and the bitmap corresponding to each of the virtual disks , Also includes:

sending the bitmap information included in the bitmap corresponding to each virtual disk to the third party.
The data backup method according to claim 5, wherein, after the third party finishes backing up the data corresponding to the data change information in the first snapshot, further comprising:

The bitmap information included in the bitmap corresponding to each virtual disk is cleared.
The data backup method according to claim 3, wherein, after the third party finishes backing up the data in the second snapshot, further comprising:

Delete the second snapshot and the information of the second snapshot.
The data backup method according to claim 6, wherein, sending the data change information and the information of the first snapshot to the third party through an API further includes:

If the data change information is recorded in a bitmap, the bitmap information included in the bitmap corresponding to the virtual disk is sent to the third party through the API.
A data backup method, characterized in that it is applied to a third party, comprising:

Sending a backup request for backing up the virtual machine to be backed up to the cloud platform, the cloud platform determines that it is not the first backup of the virtual machine to be backed up, and creates a first snapshot for the virtual machine to be backed up, and according to The first snapshot acquires data change information of the virtual machine to be backed up from the last backup to the current backup;

receiving the data change information and the information of the first snapshot sent by the cloud platform, and according to the information of the first snapshot, use the LAN-free method to record the information corresponding to the data change information in the first snapshot Data is backed up.
A data backup device, characterized in that it is applied to a cloud platform, comprising:

The receiving module is configured to receive a backup request sent by a third party for backing up the virtual machine to be backed up, and judge whether it is the first backup of the virtual machine to be backed up according to the backup request;

An acquisition module, configured to create a first snapshot for the virtual machine to be backed up if it is not the first backup of the virtual machine to be backed up in the backup request, and obtain the virtual machine to be backed up from above according to the first snapshot Data change information between the first backup and the current backup;

The first sending module is configured to send the data change information and the information of the first snapshot to the third party, and the third party uses the LAN-free method to send the information to the third party according to the information of the first snapshot. The data corresponding to the data change information in the first snapshot is backed up.
A data backup device, characterized in that it is applied to a third party, including:

The second sending module is configured to send a backup request for backing up the virtual machine to be backed up to the cloud platform, and the cloud platform determines that it is not the first backup of the virtual machine to be backed up, and sends a backup request for the virtual machine to be backed up Create a first snapshot, and obtain the data change information of the virtual machine to be backed up from the last backup to the current backup according to the first snapshot;

The first backup module is configured to receive the data change information and the information of the first snapshot sent by the cloud platform, and according to the information of the first snapshot, use the LAN-free method to compare the data in the first snapshot with the information of the first snapshot. The data corresponding to the data change information is backed up.
A data backup system, characterized in that it includes a cloud platform and a third party, wherein:

The third party is configured to send a backup request to the cloud platform for backing up the virtual machine to be backed up; receive the data change information and the information of the first snapshot sent by the cloud platform, and according to the information of the first snapshot , using a LAN-free method to back up the data corresponding to the data change information in the first snapshot;

The cloud platform is configured to judge whether it is the first backup of the virtual machine to be backed up according to the backup request; if it is determined that it is not the first backup of the virtual machine to be backed up, then the virtual machine to be backed up Create a first snapshot, obtain the data change information of the virtual machine to be backed up from the last backup to the current backup according to the first snapshot; send the data change information and the information of the first snapshot to the second Three parties.
A non-volatile readable storage medium, characterized in that a computer program is stored in the non-volatile readable storage medium, and when the computer program is executed by a processor, any one of claims 1 to 16 can be implemented. The steps of the data backup method described in claim 1 and/or the steps of the data backup method described in claim 17.