WO2020015709A1

WO2020015709A1 - Virtual machine mirror image file processing method and device

Info

Publication number: WO2020015709A1
Application number: PCT/CN2019/096593
Authority: WO
Inventors: 吴国华
Original assignee: 新华三技术有限公司
Priority date: 2018-07-20
Filing date: 2019-07-18
Publication date: 2020-01-23
Also published as: CN109144776B; CN109144776A

Abstract

The present disclosure relates to the technical field of virtualization, and provided thereby are a virtual machine mirror image file processing method and apparatus, which are applied to a method for processing a virtual machine mirror image file of a first client, comprising: responding to a file backup operation of a user, and stopping a data write-in transaction in a first client; sending a file backup request to a host computer such that the host computer backs up a virtual machine mirror image file of the first client according to the file backup request; receiving a backup completion instruction fed back by the host computer, and restarting the data write-in transaction in the first client according to the backup completion instruction. The present disclosure may reduce the amount of maintenance work by a user of a host computer, thereby increasing the maintenance efficiency of users of host computers; in addition, reliability in starting up a client may further be effectively ensured.

Description

Method and device for processing virtual machine image file

Cross-reference to related applications

This application requires that the application number of 2018108037549, which is filed on July 20, 2018, of the Chinese Patent Office, and which is called "Virtual Machine Image File Processing Method and Device", the entire contents of which are incorporated herein by reference.

Background technique

With the development of virtualization and cloud computing technology, more and more physical machines adopt virtualization technology. Virtualization technology can realize the efficient use of physical machine hardware resources. In an environment that supports virtualization, physical machines and their operating systems are collectively called host machines, and virtual machines and their operating systems are collectively called clients. Because the guest needs to read and write a large number of virtual machine image files when the client is started, there are often situations where the virtual machine image file is damaged and the guest cannot be started, which affects the user experience.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to explain the technical solution of the present disclosure more clearly, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present disclosure, and therefore should not be used. It is regarded as a limitation on the scope. For a person of ordinary skill in the art, other related drawings can be obtained according to these drawings without paying creative labor.

FIG. 1 shows a first block schematic diagram of a host machine provided by the present disclosure.

FIG. 2 shows a flowchart of a method for processing a virtual machine image file applied to a first client provided by the present disclosure.

FIG. 3 shows a flowchart of a virtual machine image file processing method applied to a host machine provided by the present disclosure.

FIG. 4 shows a second block diagram of a host machine provided by the present disclosure.

FIG. 5 shows a block diagram of a first virtual machine image file processing apparatus provided by the present disclosure.

FIG. 6 shows a block diagram of a second virtual machine image file processing apparatus provided by the present disclosure.

Icons: 10-host machine; 20-client; 101-processor; 102-memory; 103-bus; 104-communication interface; 200- first virtual machine image file processing device; 201- first execution module; 202- Sending module; 203- first receiving module; 204- second execution module; 300- second virtual machine image file processing device; 301- second receiving module; 302- file backup module; 303- file generation module; 304- create Module; 305-detection module; 306-third receiving module; 307-file recovery module; 308-query module; 309-file acquisition module; 310-execution module.

detailed description

The technical solutions in the present disclosure will be described clearly and completely in combination with the accompanying drawings in the present disclosure. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, but not all the embodiments. The components of the present disclosure, which are generally described and illustrated in the drawings herein, may be arranged and designed in a variety of different configurations. Accordingly, the following detailed description of embodiments of the present disclosure provided in the accompanying drawings is not intended to limit the scope of the claimed disclosure, but merely to indicate selected embodiments of the present disclosure. Based on the embodiments of the present disclosure, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present disclosure.

It should be noted that similar reference numerals and letters indicate similar items in the following drawings, so once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings. Meanwhile, in the description of the present disclosure, the terms “first”, “second”, and the like are only used to distinguish descriptions, and cannot be understood to indicate or imply relative importance.

Please refer to FIG. 1, which is a schematic block diagram of a host machine 10 provided by the present disclosure. The host machine 10 runs at least one client 20, and the client 20 is a virtual hardware system running on the host machine 10, also called a virtual machine, which has a CPU (Central Processing Unit), memory, a network card, a hard disk, etc. Hardware, which is divided and virtualized from the physical hardware resources of the host machine 10 running the client 20, is not a real physical entity. There is a communication channel developed by the serial port protocol between the operating system of the host machine 10 and the operating system of the client 20, which can be used to transfer information between the operating system of the host machine 10 and the operating system of the client 20. The host machine 10 may be, but is not limited to, a personal computer (PC), a physical server, etc. The first client is any one of the at least one client 20, in other words, any one running on the host machine 10 The client 20 may be referred to as a first client.

The information of the client 20 is stored in a hardware configuration file and a virtual machine image file. The hardware configuration file stores the number of CPUs, memory capacity, number of network cards / types of the client 20, and the virtual machine image file of the client on the host machine. Information such as the storage path on 10, and the virtual machine image file store information such as the boot program of the client 20 and the operating system data file.

KVM (Kernel-based Virtual Machine) is an open source system virtualization module. In an environment that supports KVM virtualization, the startup process of the client 20 consists of two parts: 1. KVM on the host 10 Create a virtual machine hardware environment such as CPU, memory, and IO devices according to the hardware configuration file (eg, virtual machine xml configuration file); 2. Load the boot program and operating system data file of the virtual machine image file to complete the startup process of the guest 20 operating system . In this process, because the virtual machine image file has a complex structure, and the client 20 often writes to it during the running process, this easily leads to damage to the virtual machine image file. In addition, if the host is powered off abnormally, the client or the host is restarted abnormally, or the client is restored to the incomplete virtual machine image file version, the virtual machine image file will be damaged. For the host machine 10, the virtual machine image file is a black box. In other words, the host machine 10 has difficulty in knowing the content of the virtual machine image file and cannot repair the damaged virtual machine image file. This means that once the virtual machine The machine image file is damaged and the client 20 will fail to start.

To improve this problem, the virtual machine image file is usually backed up and restored using the backup file after it is damaged. However, the backup and restoration of the virtual machine image file can only be performed by the host administrator (host user), and it is not possible to ensure that the client files saved in the backup virtual machine image file are complete, so that the subsequent use of the backup virtual machine image file When recovering, the client 20 is likely to be abnormal or even fail to start.

In order to ensure the normal startup of the client 20, a backup operation can be performed on the client 20 when the client 20 is running normally, and the client 20 can be restored according to the backup client 20 when the client 20 starts abnormally.

In the present disclosure, the backup operation to the client 20 is to back up the hardware configuration file and the virtual machine image file that store all the information of the client 20, and the recovery operation to the client 20 is to back up the hardware configuration file and the virtual machine image file. Copy over the original file. Because the information in the hardware configuration file is highly stable, and the information in the virtual machine image file is constantly changing during the operation of the client 20, as long as the accuracy of the backup virtual machine image file is ensured, the client 20 can be guaranteed Reliable startup.

In order to at least partially improve the foregoing problems, the present disclosure provides a virtual machine image file processing method and device, which are described in detail below.

Please refer to FIG. 2, which is a schematic flowchart of a method for processing a virtual machine image file provided by the present disclosure. The method is applied to a first client. The following describes each step of the method for processing a virtual machine image file for a first client.

In step S101, in response to the user's file backup operation, the data writing transaction in the first client is stopped.

In the present disclosure, the file backup operation may be a trigger operation of a user of the first client to back up the virtual machine image file of the first client. When the first client is running normally, the user of the first client triggers the file backup operation, for example, the user of the first client enters an instruction characterizing the file backup operation, or clicks a control characterizing the file backup operation.

After the user triggers the file backup operation, the first client first stops the data writing transaction in the first client. The data writing transaction may be a transaction in which the file system of the first client writes data into the virtual machine image file. In other words, the file system of the first client no longer writes data into the virtual machine image file. In this way, it can be at least partially ensured that the virtual machine image file backed up by the host machine 10 is a complete first client file.

Step S102: Send a file backup request to the host machine, so that the host machine backs up the virtual machine image file of the first client according to the file backup request.

In the present disclosure, after stopping the data writing transaction in the first client, a file backup request is initiated to the host machine 10. The file backup request may be a confirmation instruction for backing up the virtual machine image file of the first client. The host machine 10 After receiving the file backup request, start copying the virtual machine image file to the backup directory of the first client that is established in advance. The backup directory can store the backup virtual machine image file and the name, storage time, and time of the backup virtual machine image file. The storage path on the host machine 10 and so on. As an implementation manner, a backup directory of each client 20 running on the host machine 10 may be established in advance, and the backup directory is configured to store at least one backup virtual machine image file corresponding to the client 20 and each backup virtual machine image file. Name, storage time, storage path of the backup virtual machine image file on the host machine 10, and the like.

Step S103: Receive a backup completion instruction fed back by the host, and restart the data writing transaction in the first client according to the backup completion instruction.

In the present disclosure, after the copy of the virtual machine image file of the first client is completed, the host 10 feeds back the backup completion instruction to the first client. After receiving the backup completion instruction, the first client restarts the data writing transaction, that is, allows The file system of the first client writes data into the virtual machine image file.

When the first client can be started, but the user data of the first client is incomplete (for example, the database is damaged, etc.), or some important business processes (for example, the data sending and receiving process) cannot be started, the host machine 10 needs to be used for backup. The backup virtual machine image file of the first client restores the virtual machine image file of the first client. Therefore, the present disclosure may further include step S104.

Step S104: In response to the user's file recovery operation, send a file recovery request to the host machine, so that the host machine recovers the virtual machine image file of the first client according to the file recovery request.

In the present disclosure, the file restoration operation may be an operation triggered after a user of the first client obtains a backup directory of the first client stored by the host machine 10 and selects a backup virtual machine image file to be restored from the backup directory. , Or may be an operation triggered by a user of the first client after entering information such as a name of a backup virtual machine image file to be restored.

After the user of the first client triggers the file recovery operation, the first client sends a file recovery request to the host machine 10, and the file recovery request may include the name of the file to be recovered. After receiving the file restoration request, the host computer 10 first closes the first client according to the file restoration request; then, according to the name of the file to be restored, from the backup directory corresponding to the first client, a A backup virtual machine image file name, using the backup virtual machine image file corresponding to the backup virtual machine image file name as a target backup virtual machine image file, and replacing the current virtual machine image file of the first client with the target backup virtual machine image file, To restore the virtual machine image file of the first client; finally, after the restoration of the virtual machine image file of the first client is completed, start the first client.

It is worth noting that the above-mentioned file backup request and file restoration request in the present disclosure can be transmitted via the aforementioned communication channel developed by the serial port protocol.

In the prior art, the backup / recovery process of the virtual machine image file is usually performed by the host machine 10, and the user of the client 20 can only operate the client 20 and cannot see the file system of the host machine 10. The process of backing up / restoring the virtual machine image file can only be triggered by the user of the host machine 10, especially when multiple clients 20 are running on the host machine 10 and the users of each client 20 are different, the host will be greatly increased. The maintenance workload of the users of the host 10 results in poor maintenance efficiency. For example, the users of the host 10 cannot back up / restore the virtual machine image files of the respective clients 20 in a timely manner. With the virtual machine image file processing method provided by the present disclosure, the user of the client 20 can independently complete the backup / restore operation of the virtual machine image file of the client 20 without the assistance of the user of the host machine 10, thereby reducing the The maintenance workload improves the maintenance efficiency of the user of the host machine 10, reduces the degree of coupling between the host machine 10 and the client 20, and improves security.

In addition, in the prior art, during the process of the host machine backing up the virtual machine image file of the client, the client may write data to the virtual machine image file in parallel, resulting in the backup virtual machine image file finally obtained by the host machine. Is incomplete. In the method for processing a virtual machine image file provided by the present disclosure, after a user of the client 20 triggers a file backup operation, the file system of the client 20 is first prohibited from writing data to the virtual machine image file, and then a file backup request is sent to the host machine 10 After receiving the file backup request, the host machine 10 backs up the virtual machine image file of the client 20 and feeds back the backup completion instruction to the client 20 after the backup is completed. After receiving the backup completion instruction, the client 20 allows the first The client's file system writes data to the virtual machine image file, so that it can ensure that the virtual machine image file backed up by the host machine 10 is a complete client file, which can at least partially effectively prevent the incomplete backup virtual machine from being restored. The image file causes the client 20 to be abnormal or even fail to start.

Please refer to FIG. 3, which is a schematic flowchart of another method for processing a virtual machine image file provided by the present disclosure. The method can be applied to the host machine 10. Each step of the method for processing a virtual machine image file for the host machine 10 will be described below.

Step S201: Receive a file backup request sent by a first client, where the file backup request is generated by the first client in response to a user's file backup operation, and the first client stops data in the first client in response to the file backup operation Write transaction.

In the present disclosure, a user of the first client triggers a file backup operation when the first client is normally running. In response to the file triggering operation, the first client first stops data writing transactions in the first client, that is, prohibits the first client. The client's file system writes data to the virtual machine image file; and then sends a file backup request to the host machine 10. The file backup request may be a confirmation instruction for backing up the virtual machine image file of the first client.

In step S202, the virtual machine image file of the first client is backed up to obtain a backup virtual machine image file according to the file backup request, and the backup completion instruction is fed back to the first client after the backup is completed to restart the data writing in the first client. Into business.

In this disclosure, a backup directory for each client 20 running on the host machine 10 may be established in advance. The backup directory is used to store at least one backup virtual machine image file of the client 20 and the name of each backup virtual machine image file, The storage time, the storage path of the backup virtual machine image file on the host machine 10, and the like.

In the present disclosure, after receiving the file backup request sent by the first client, the host 10 starts to copy the virtual machine image file of the first client and stores the backup virtual machine image file to a backup directory corresponding to the first client. In addition, information such as the name of the backup virtual machine image file, the storage time, and the storage path on the host machine 10 are also stored. After the copying is completed, the host 10 feeds back the backup completion instruction to the first client, so that the first client restarts the data writing transaction, that is, allows the file system of the first client to write data to the virtual machine image file.

In the prior art, when the client 20 cannot be started, the host machine 10 is required to use the backup virtual machine image file of the client 20 to restore the current virtual machine image file, but the backup virtual machine image file may not be reliable. It will cause the client 20 to fail to start successfully after the virtual machine image file is restored, and it is necessary to repeatedly restore the virtual machine image file. As a result, the client 20 cannot provide external services for a long time. At the same time, the host machine 10 and the client machine are reduced. The coupling degree of 20 and the maintenance workload of 10 users of the host machine. Therefore, after the host machine 10 backs up the virtual machine image file of the first client, the reliability check of the backup virtual machine image file can be performed to reduce the service interruption time of the first client due to accident to a minimum.

In the present disclosure, considering that the host machine 10 cannot determine whether the backup virtual machine image file is reliable according to the content of the backup virtual machine image file, the backup is skillfully detected by judging whether the backup virtual machine image file can successfully start the first client. The reliability of the virtual machine image file. However, the first client is running. If you stop it, it will cause service interruption. Therefore, you can re-create a second client similar to the first client to complete the reliability check of the backup virtual machine image file. The disclosure may further include steps S203 to S205.

Step S203: Obtain a hardware configuration file of the first client, and generate a detection configuration file according to the hardware configuration file.

Conflict errors occur when different clients have the same specific information in their hard disk configuration files. The specific information may be, for example, but not limited to, a UUID (Universally Unique Identifier), a virtual machine name, a serial port channel name between the host 10 and the first client, and the like. The specific information may be called For conflict information. In the present disclosure, the conflict information in the hardware configuration file of the first client may be modified to obtain a detection configuration file, so as to avoid a conflict between the second client and the first client generated subsequently.

Step S204: Create a second client according to the detection configuration file and the backup virtual machine image file.

In step S205, the second client is controlled to start. When it is detected that the second client is successfully started, it is determined that the backup virtual machine image file passes the reliability detection and a reliability flag is added.

In the present disclosure, whether the second client is successfully started can be detected by whether the handshake between the host 10 and the second client is successful. Specifically, a handshake time (for example, 5 minutes) can be set. After the second client, if the host 10 and the second client successfully shake hands within the handshake time, it is determined that the backup virtual machine image file passes the reliability check. When the backup virtual machine image file passes the reliability test, a reliability mark is added to identify the backup virtual machine image file as reliable, and the second client is deleted.

It should be noted that in order to ensure the stability of the hardware configuration file of the first client and the backup virtual machine image file, the hardware configuration file and the backup virtual machine image file can be copied, and a detection configuration is generated according to the copied hardware configuration file. File, and a second guest is created based on the detection configuration file and the copied backup virtual machine image file. Correspondingly, after the reliability test is completed, the test configuration file and the copied backup virtual machine image file may be deleted.

When the user of the first client finds that the first client can be started, but the user data of the first client is incomplete (for example, the database is damaged, etc.), or some important business processes (for example, the data sending and receiving process, etc.) cannot be started , A file restoration request may be sent to the host machine 10, so that the host machine 10 uses the backup virtual machine image file of the backup first client to restore the virtual machine image file of the first client, therefore, the present disclosure further includes step S206 ～ Step S207.

Step S206: Receive a file recovery request sent by the first client, where the file recovery request is generated by the first client in response to a file recovery operation of the user.

In the present disclosure, when the first client can be started, but the user data of the first client is incomplete (for example, the database is corrupted, etc.), or some important business processes (for example, the data sending and receiving process, etc.) cannot be started, the first A user of a client may trigger a file recovery operation. The file recovery operation may be that the user of the first client obtains a backup directory of the first client stored by the host machine 10 and selects a backup virtual machine to be restored from the backup directory. Action triggered after mirroring the file. After receiving the file recovery operation, the first client sends a file recovery request to the host machine 10.

In step S207, the first client is shut down according to the file restoration request, and the virtual machine image file of the first client is restored, and then the first client is restarted.

In the present disclosure, the file restoration request may include a name of a file to be restored, and at least one backup virtual machine image file corresponding to the first client and a name of each backup virtual machine image file are stored in the host machine 10 in advance. After receiving the file restoration request sent by the first client, the host machine 10 first closes the first client; then, based on the name of the file to be restored and the name of each backup virtual machine image file, from at least one backup virtual machine image file Determine the backup virtual machine image file to be restored, and use the backup virtual machine image file to be restored to replace the current virtual machine image file of the first client; after the replacement is completed, start the first client.

If the host machine 10 detects that the first client cannot be started, the first client can be restored by using a backup virtual machine image file with a reliability mark. Therefore, the present disclosure further includes steps S208 to S210.

Step S208: When it is detected that the first client cannot be started, query whether at least one backup virtual machine image file corresponding to the first client exists a backup virtual machine image file with a reliability mark.

In the present disclosure, after the host recovers the current virtual machine image file and starts the first client according to the received file recovery request, or after the host starts the first client under any other circumstances, The host 10 can determine whether the first client is successfully started by shaking hands with the first client. If the host 10 and the first client fail to shake hands within a preset handshake time (for example, 3-5 minutes), the host 10 determines The first client cannot be started successfully. At this time, the host machine 10 can query whether there is a backup virtual machine image file with a reliability mark in the backup directory corresponding to the first client, that is, whether there is a reliable backup virtual machine image file. If there is a backup virtual machine image file with a reliability flag in the at least one backup virtual machine image file corresponding to the first client, step S209 is performed.

Step S209: Obtain the backup virtual machine image file with the latest storage time from all the backup virtual machine image files with the reliability mark as the target virtual machine image file.

In the present disclosure, when the host machine 10 detects the existence of a backup virtual machine image file with a reliability mark in the backup directory corresponding to the first client, it obtains the storage time of each backup virtual machine image file with a reliability mark. By using the backup virtual machine image file with the latest storage time as the target virtual machine image file, and then using the target virtual machine image file to restore the first client, the first client can be restored to the state before the exception occurred.

Step S210: Restore the virtual machine image file of the first client according to the target virtual machine image file.

In the present disclosure, after the target virtual machine image file is determined, the first client is closed first, and then the current virtual machine image file of the first client is replaced with the target virtual machine image file, and after the replacement of the target virtual machine image file is completed , Restart the first client.

The method for processing a virtual machine image file provided by the present disclosure firstly, after the host machine 10 completes the backup operation of the virtual machine image file, it automatically performs a reliability check on the backup virtual machine image file, and backs up the virtual machine image that has passed the reliability test. Add a reliability flag to the file. Second, when it is detected that the first client cannot be started, the first client can be restored by using the backup virtual machine image file with the reliability flag and the latest storage time, so that the first client can be detected When the machine fails to start, it directly finds the corresponding reliable backup virtual machine image file to restore the current virtual machine image file, thereby effectively reducing the time that the first client cannot provide services, and the entire process can eliminate the need for the host machine 10 users to participate, reducing the host The maintenance workload of the host 10 users.

Please refer to FIG. 4, which is a schematic block diagram of a host machine 10 provided by the present disclosure. The host machine 10 includes a processor 101, a memory 102, a bus 103, and a communication interface 104. The processor 101, the memory 102, and the communication interface 104 are connected through the bus 103; the processor 101 is configured to execute executable modules stored in the memory 102, For example, computer programs.

The memory 102 may include high-speed random access memory (RAM: Random Access Memory), and may also include non-volatile memory (non-volatile memory), such as at least one disk memory. A communication connection between the network element of the system and at least one other network element is achieved through at least one communication interface 104 (which may be wired or wireless).

The bus 103 may be an ISA bus, a PCI bus, an EISA bus, or the like. In FIG. 4, only one bidirectional arrow is used, but it does not mean that there is only one bus or one type of bus.

The memory 102 is configured to store programs, such as the first virtual machine image file processing device 200 shown in FIG. 5 and the second virtual machine image file processing device 300 shown in FIG. 6. The first virtual machine image file processing device 200 and the second virtual machine image file processing device 300 each include at least one operating system that can be stored in the memory 102 in the form of software or firmware or solidified in the host machine 10 (operating system, OS) software function module. After receiving the execution instruction, the processor 101 executes the program to implement the virtual machine image file processing method disclosed in the foregoing embodiment of the present disclosure.

The processor 101 may be an integrated circuit chip and has a signal processing capability. In the implementation process, each step of the above method may be completed by an integrated logic circuit of hardware in the processor 101 or an instruction in the form of software. The above-mentioned processor 101 may be a general-purpose processor, including a central processing unit (CPU), a network processor (Network Processor) (NP), etc .; it may also be a digital signal processor (DSP), an application specific integrated circuit (ASIC), field programmable gate array (FPGA), complex programmable logic device (Complex Programmable Logic Device, CPLD) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components.

The present disclosure also provides a computer-readable storage medium on which a computer program is stored. When the computer program is executed by the processor 101, the method for processing a virtual machine image file disclosed in the foregoing embodiment is implemented.

Please refer to FIG. 5, which illustrates a block diagram of a first virtual machine image file processing apparatus 200 provided by the present disclosure. The first virtual machine image file processing apparatus 200 is applied to a first client, and is functionally divided, and may include a first execution module 201, a sending module 202, a first receiving module 203, and a second execution module 204.

The first execution module 201 is configured to stop a data writing transaction in the first client in response to a user file backup operation.

The sending module 202 is configured to send a file backup request to the host machine, so that the host machine backs up the virtual machine image file of the first client according to the file backup request.

The first receiving module 203 is configured to receive a backup completion instruction fed back by the host, and restart the data writing transaction in the first client according to the backup completion instruction.

The second execution module 204 is configured to send a file restoration request to the host machine in response to a file restoration operation of the user, so that the host machine restores the virtual machine image file of the first client according to the file restoration request.

For the description of the above modules, please refer to the detailed description of related steps in the foregoing.

Please refer to FIG. 6, which illustrates a block diagram of a second virtual machine image file processing apparatus 300 provided by the present disclosure. The second virtual machine image file processing device 300 is applied to the host machine 10 and is functionally divided, and may include a second receiving module 301, a file backup module 302, a file generating module 303, a creating module 304, a detecting module 305, and a third receiving device. Module 306, file recovery module 307, query module 308, file acquisition module 309, and execution module 310.

The second receiving module 301 is configured to receive a file backup request sent by the first client, wherein the file backup request is generated by the first client in response to a file backup operation of the user, and the first client stops the first response to the file backup operation. Data write transactions from the client.

The file backup module 302 is configured to perform a backup of the virtual machine image file of the first client to obtain a backup virtual machine image file according to the file backup request, and feed back a backup completion instruction to the first client to restart the first client after the backup is completed. Data in a write transaction.

The file generating module 303 is configured to obtain a hardware configuration file of the first client, and generate a detection configuration file according to the hardware configuration file.

The creating module 304 is configured to create a second client according to the detection configuration file and the backup virtual machine image file.

The detection module 305 is configured to control the startup of the second client. When it is detected that the startup of the second client is successful, it is determined that the backup virtual machine image file passes the reliability detection and adds a reliability flag.

The third receiving module 306 is configured to receive a file recovery request sent by the first client, where the file recovery request is generated by the first client in response to a user's file recovery operation.

The file recovery module 307 is configured to shut down the first client according to the file recovery request, and recover the virtual machine image file of the first client and restart the first client.

The querying module 308 is configured to query whether there is a backup virtual machine image file with a reliability flag in at least one backup virtual machine image file corresponding to the first client when it is detected that the first client cannot be started.

In the present disclosure, if the query module 308 queries that there is a backup virtual machine image file with a reliability mark in the at least one backup virtual machine image file corresponding to the first client, the query is performed by the file acquisition module 309.

The file obtaining module 309 is configured to obtain storage from all backup virtual machine image files with reliability marks when there are backup virtual machine image files with reliability marks in at least one backup virtual machine image file corresponding to the first client. The latest backup virtual machine image file is used as the target virtual machine image file.

The execution module 310 is configured to restore the virtual machine image file of the first client according to the target virtual machine image file.

For the description of the above modules, please refer to the detailed description of related steps.

In summary, with the method and device for processing virtual machine image files provided by the present disclosure, the user of the client can independently complete the backup / restore operation of the virtual machine image file of the client without the assistance of the host user, reducing the host The user's maintenance workload reduces the coupling between the host and the client and improves security.

In addition, after a client user triggers a file backup operation, the client's file system is first prohibited from writing data to the virtual machine image file before sending a file backup request to the host, and after receiving the backup completion instruction sent by the host, it is allowed The file system of the first client writes data into the virtual machine image file, thereby effectively avoiding the situation that the guest is abnormal or even unable to start due to the restoration of an incomplete backup virtual machine image file.

Further, after the virtual machine image file is backed up, the reliability of the backup virtual machine image file is checked, thereby avoiding the subsequent use of the backup virtual machine image one by one because it is impossible to determine whether each backup virtual machine image file is reliable. File to restore the current virtual machine image file of the first client, causing the problem that the first client service is interrupted for too long.

In the several embodiments provided by the present disclosure, it should be understood that the disclosed apparatus and method may also be implemented in other manners. The device embodiments described above are merely schematic. For example, the flowcharts and block diagrams in the accompanying drawings show the architecture, functions, and functions of devices, methods, and computer program products according to various embodiments of the present disclosure. operating. In this regard, each block in the flowchart or block diagram may represent a module, a program segment, or a part of code, which contains one or more components for implementing a specified logical function Executable instructions. It should also be noted that in some alternative implementations, the functions marked in the blocks may also occur in a different order than those marked in the drawings. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in the reverse order, depending on the functions involved. It should also be noted that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, can be implemented in a dedicated hardware-based system that performs the specified function or action. , Or it can be implemented with a combination of dedicated hardware and computer instructions.

In addition, the functional modules in the various embodiments of the present disclosure may be integrated together to form an independent part, or each of the modules may exist alone, or two or more modules may be integrated to form an independent part.

If the functions are implemented in the form of software function modules and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on such an understanding, the technical solution of the present disclosure is essentially a part that contributes to the existing technology or a part of the technical solution may be embodied in the form of a software product. The computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in various embodiments of the present disclosure. The foregoing storage media include: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disks or optical disks and other media that can store program codes . It should be noted that in this article, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that these entities or operations There is any such actual relationship or order among them. Moreover, the terms "including", "comprising", or any other variation thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or device that includes a series of elements includes not only those elements but also those that are not explicitly listed Or other elements inherent to such a process, method, article, or device. Without more restrictions, the elements defined by the sentence "including a ..." do not exclude the existence of other identical elements in the process, method, article, or equipment including the elements.

The above descriptions are merely preferred embodiments of the present disclosure, and are not intended to limit the present disclosure. For those skilled in the art, the present disclosure may have various modifications and changes. Any modification, equivalent replacement, or improvement made within the spirit and principle of this disclosure shall be included in the protection scope of this disclosure. It should be noted that similar reference numerals and letters indicate similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

Industrial applicability

A method and device for processing a virtual machine image file provided by the present disclosure can complete the backup and / or restore operation of a virtual machine image file only triggered by a client user, which reduces the maintenance workload of the host machine user. In addition, the problem that the guest cannot start due to incomplete or abnormal backup virtual machine image files is effectively improved, and the problem that the service is interrupted for too long is effectively improved.

Claims

A virtual machine image file processing method is characterized in that it is applied to a first client, the first client is a virtual machine running on a host machine, and an operating system of the first client and the host machine Operating system communication, the method includes:

In response to a user's file backup operation, stopping a data writing transaction in the first client;

Sending a file backup request to the host machine, so that the host machine backs up the virtual machine image file of the first client according to the file backup request;

Receiving a backup completion instruction fed back by the host, and restarting a data writing transaction in the first client according to the backup completion instruction.
The method of claim 1, further comprising:

In response to the user's file recovery operation, a file recovery request is sent to the host machine, so that the host machine recovers the virtual machine image file of the first client according to the file recovery request.
A method for processing a virtual machine image file is characterized in that the method is applied to a host machine, the host machine runs a first client, and an operating system of the host machine communicates with an operating system of the first client. Methods include:

Receiving a file backup request sent by the first client, wherein the file backup request is generated by the first client in response to a file backup operation of a user, and the first client stops responding to the file backup operation A data writing transaction in the first client;

Backup the virtual machine image file of the first client according to the file backup request to obtain a backup virtual machine image file, and feed back a backup completion instruction to the first client after the backup is completed to restart the first client Data is written to the transaction.
The method of claim 3, further comprising:

Receiving a file recovery request sent by the first client, wherein the file recovery request is generated by the first client in response to a file recovery operation of a user;

Shut down the first client according to the file recovery request, and restart the first client after restoring a virtual machine image file of the first client.
The method according to claim 3 or 4, further comprising:

Acquiring a hardware configuration file of the first client, and generating a detection configuration file according to the hardware configuration file;

Creating a second client according to the detection configuration file and the backup virtual machine image file;

Controlling the startup of the second client, and when it is detected that the startup of the second client is successful, it is determined that the backup virtual machine image file passes reliability detection and adds a reliability flag.
The method according to claim 5, wherein the host machine stores at least one backup virtual machine image file corresponding to the first client and a storage time of each backup virtual machine image file in advance, the method further comprising: include:

When it is detected that the first client cannot be started, query whether there is a backup virtual machine image file with a reliability mark in at least one backup virtual machine image file corresponding to the first client;

If yes, obtain the backup virtual machine image file with the latest storage time from all the backup virtual machine image files with the reliability mark as the target virtual machine image file;

Recovering the virtual machine image file of the first client according to the target virtual machine image file.
The method according to claim 5 or 6, wherein the generating a detection configuration file according to the hardware configuration file comprises:

Duplicate the hardware configuration file, modify the conflict information in the duplicated hardware configuration file to obtain the detection configuration file; where different clients have the same conflict information in the hardware configuration file, a conflict error will occur.
A virtual machine image file processing device is characterized in that it is applied to a first client, the first client is a virtual machine running on a host machine, an operating system of the first client and the host machine Operating system communication, the device includes:

A first execution module configured to stop a data writing transaction in the first client in response to a file backup operation of a user;

A sending module configured to send a file backup request to the host machine, so that the host machine backs up the virtual machine image file of the first client according to the file backup request;

The first receiving module is configured to receive a backup completion instruction fed back by the host, and restart the data writing transaction in the first client according to the backup completion instruction.
The apparatus according to claim 8, further comprising:

A second execution module configured to respond to a user's file recovery operation and send a file recovery request to the host machine, so that the host machine recovers the virtual machine image file of the first client according to the file recovery request .
A virtual machine image file processing device is characterized in that it is applied to a host machine, the host machine runs a first client, and an operating system of the host machine communicates with an operating system of the first client. The device includes:

A second receiving module configured to receive a file backup request sent by the first client, wherein the file backup request is generated by the first client in response to a file backup operation of a user, and the first client Stopping the data writing transaction in the first client in response to the file backup operation;

The file backup module is configured to perform a backup of the virtual machine image file of the first client to obtain a backup virtual machine image file according to the file backup request, and feed back a backup completion instruction to the first client to complete the backup. Restarting the data writing transaction in the first client.
The apparatus of claim 10, further comprising:

A third receiving module configured to receive a file recovery request sent by the first client, wherein the file recovery request is generated by the first client in response to a file recovery operation of a user;

The file recovery module is configured to shut down the first client according to the file recovery request, and recover the virtual machine image file of the first client and restart the first client.
The device according to claim 10 or 11, wherein the device further comprises:

A file generating module configured to obtain a hardware configuration file of the first client and generate a detection configuration file according to the hardware configuration file;

A creating module configured to create a second client according to the detection configuration file and the backup virtual machine image file;

The detection module is configured to control the startup of the second client. When it is detected that the startup of the second client is successful, it is determined that the backup virtual machine image file passes the reliability detection and adds a reliability flag.
The apparatus according to claim 12, wherein the host machine stores in advance at least one backup virtual machine image file corresponding to the first client and a storage time of each backup virtual machine image file, and the apparatus further include:

A query module configured to query whether it is detected that a backup virtual machine image file with a reliability flag exists in at least one backup virtual machine image file corresponding to the first client when it is detected that the first client cannot be started;

A file obtaining module configured to obtain from all backup virtual machine image files with reliability marks when there are backup virtual machine image files with reliability marks in at least one backup virtual machine image file corresponding to the first client; The latest backup virtual machine image file is stored as the target virtual machine image file;

The execution module is configured to restore the virtual machine image file of the first client according to the target virtual machine image file.
The apparatus according to claim 12 or 13, wherein the file generating module is specifically configured to:

Copying the hardware configuration file, and modifying conflict information in the copied hardware configuration file to obtain the detection configuration file;

Among them, if different clients have the same conflict information in the hardware configuration file, a conflict error will occur.
A computer-readable storage medium having stored thereon a computer program, characterized in that when the computer program is executed by a processor, the method according to any one of claims 1-7 is implemented.