WO2018001375A1

WO2018001375A1 - Physical to virtual migration method, physical server, virtual server, and system

Info

Publication number: WO2018001375A1
Application number: PCT/CN2017/091296
Authority: WO
Inventors: 张景亭; 王春霞; 莫景钦
Original assignee: 中兴通讯股份有限公司
Priority date: 2016-06-30
Filing date: 2017-06-30
Publication date: 2018-01-04
Also published as: CN107562511A

Abstract

A physical to virtual migration method, physical server, virtual server, and system. The method comprises: splitting, according to preconfigured rule, a disk file into two or more delta files, and migrating, using at least one delta file as a migration unit, and to a server, the two or more delta files.

Description

Physical to virtual migration methods, physical servers, virtual servers, and systems

Technical field

The present disclosure relates to the field of communication technologies, for example, to a physical to virtual migration method, a physical server, a virtual server, and a system.

Background technique

In virtualized cloud platform scenarios such as Kernel-based Virtual Machine (KVM) or Open Source Virtual Machine Monitor XEN, more and more users are moving to Physical to Virtual (P2V) Higher requirements were raised.

The mainstream vendor's processing method is that the P2V system installs an agent on the physical server. The agent is configured to generate a physical server disk snapshot, and calculate the physical server disk size, central processing unit (CPU) frequency and memory size, etc. Configure to create the same type of virtual server on the virtualization platform, copy the disk snapshot of the physical server to the virtual server, and start the virtual server. This process requires that the network bandwidth is large enough and the network is stable enough. However, for physical servers with excessive disk capacity, the P2V migration mode in the related technology leads to poor migration reliability and cannot guarantee real-time data synchronization.

Summary of the invention

According to the physical to virtual migration method, the physical server, the virtual server, and the system provided by the embodiment, the reliability of the P2V migration mode can be improved, and real-time data synchronization can be ensured.

This embodiment provides a physical to virtual online migration method, including:

Split the disk file into at least two differential files according to a preset rule; and,

The at least two differential files are migrated to the virtual machine with at least one differential file as a migration unit.

This embodiment provides another physical to virtual online migration method, including:

Receiving a differential file migrated by a physical server with a differential file of at least one of the partitions; and,

All the received differential files are reorganized in the order before the split to get the disk file.

This embodiment provides a physical server, including:

a file splitting module, configured to split the disk file into at least two differential files according to a preset rule; as well as,

a file migration module configured to migrate the at least two differential files to a virtual server in at least one differential file as a migration unit.

The embodiment provides a virtual server, where the virtual server is deployed with a virtual machine, and the virtual machine includes:

a file receiving module, configured to receive a differential file migrated by the physical server by using a differential file of at least one of the partitions as a migration unit; and

The file reorganization module is configured to recombine all the received differential files in the order before the split to obtain a disk file.

This embodiment also provides a physical to virtual migration system, including physical servers and virtual servers as described above.

The embodiment further provides a computer storage medium having stored therein computer executable instructions for performing the physical to virtual online migration method of any of the foregoing.

According to the physical to virtual online migration method, the physical server, the virtual server, the system, and the computer storage medium provided by the embodiment, the disk file is split into at least two files according to a preset rule, and the migration is performed by using at least one difference file. The unit migrates the at least two differential files to the server, which improves the reliability and migration efficiency of the data migration, and ensures that the data can be migrated to the virtual server in real time, ensuring data consistency throughout the migration process.

DRAWINGS

FIG. 1 is a flowchart of a physical to virtual migration method according to Embodiment 1;

2 is a flowchart of setting a physical server according to Embodiment 1;

FIG. 3 is a flowchart of installing a physical server agent according to Embodiment 1;

4 is a flowchart of differential processing of a disk according to Embodiment 1;

FIG. 5 is a flowchart of a differential file migration according to Embodiment 1;

FIG. 6 is a flowchart of a physical to virtual migration method according to Embodiment 2;

FIG. 7 is a flowchart of message notification after migration is completed according to Embodiment 2;

8 is a schematic diagram of a physical server provided in Embodiment 3;

9 is a schematic diagram of a virtual server provided in Embodiment 4;

FIG. 10 is a schematic diagram of a physical to virtual migration system according to Embodiment 4; and

FIG. 11 is a schematic structural diagram of a hardware of a server according to Embodiment 5 of the present disclosure.

detailed description

The present embodiment will be described in detail below by way of specific embodiments with reference to the accompanying drawings.

Embodiment 1

In this embodiment, the operation flow on the physical server side is taken as an example. Referring to FIG. 1 , FIG. 1 is a physical to virtual migration method according to the first embodiment, and includes the following steps.

In S110, the disk file is split into at least two difference files according to a preset rule.

Optionally, the disk of the physical server is divided into at least two disks according to a preset rule, and accordingly, the disk file is also split into at least two differential files, that is, the data stored in each disk is a difference. file. Among them, the difference means the difference from the original file. The preset rule can differentially process the disk in a differential form, dividing the disk into at least two partitions. A unique identifier can be set in the difference file to ensure that the virtual machine can correctly reorganize the disk file according to the unique identifier when reorganizing the differential file. Alternatively, other methods of splitting well known in the art may be employed.

In S120, the at least two differential files are migrated to the virtual machine with at least one differential file as a migration unit.

Optionally, after the disk file is split into at least two differential files, when the differential file is migrated to the virtual machine, the migration can be performed by using one differential file as the migration unit, that is, the differential file is migrated one by one to the virtual machine, or Migrate with two or more differential files as the migration unit, that is, each time you migrate data to the virtual machine, you can migrate at least two differential files at a time.

Optionally, in S110, when the disk file is split into at least two differential files according to a preset rule, the disk may be divided according to the differential mode of the disk, that is, the disk is differentially processed, and at least the physical server is divided. Two differential disks (ie, partitions), correspondingly, discard the disk files stored in the disk into at least two differential files, one differential file in each differential disk.

Before the differential processing of the disk, the physical server can be set. Referring to FIG. 2, FIG. 2 is a flowchart of setting the physical server according to the first embodiment. The setting process is as follows.

In S210, the management system of the virtualization platform determines whether the physical server is set. If not, the process proceeds to S220, and if it is set, the process ends.

Optionally, the physical server information includes an IP address, a gateway, a username, and a password, etc., and virtualization The platform is deployed on a virtual server and can be set up to create and launch a virtual machine on which at least one virtual machine can be deployed. The virtualization platform can be a virtualized cloud platform such as KVM or XEN. The user provides the information of the physical server to the management system of the virtualization platform, and the system manages the physical server and confirms to the physical server whether the setting has been made. The aforementioned physical server is the physical server to be migrated.

In S220, the management system of the virtualization platform determines whether the IP address format of the physical server is correct. If the IP address format is correct, S230 is performed. If the IP address format is incorrect, the process ends.

Optionally, the user inputs the IP address of the physical server, and the management system of the virtualization platform checks the IP address format. If the IP address is in the correct format, the next step is performed.

In S230, the management system of the virtualization platform determines whether the format of the gateway address is correct. If the format of the gateway address is correct, S240 is performed, and if the format of the gateway address is incorrect, the process ends.

Optionally, the user inputs the gateway address of the physical server, and the management system of the virtualization platform checks the format of the gateway address. If the format of the gateway address is correct, the next step is performed.

In S240, the management system of the virtualization platform requests the physical server to input a username and password.

Optionally, the user inputs a username and password on the current interface according to the request sent by the management system of the virtualization platform.

In S250, the management system of the virtualization platform automatically synchronizes the information of the physical server into the database.

After the physical server is set up, the agent can be installed on the physical server to perform differential processing on the disk. Referring to FIG. 3, FIG. 3 is a flowchart of installing the physical server agent according to the first embodiment. The physical server agent installation process is as follows.

In S310, the management system of the virtualization platform acquires information of the physical server.

In S320, the management system of the virtualization platform determines whether the physical server installs an agent. If the physical server does not have an agent installed, S330 is executed, and if the agent is installed, the process ends.

Optionally, after the physical server installs the proxy, the proxy can calculate the physical server disk size, CPU frequency, and memory size.

In S330, the management system of the virtualization platform determines whether the user name input by the user is correct. If it is correct, execute S340. If not, the process ends.

Optionally, the user inputs the username of the physical server, and the management system of the virtualization platform matches the stored username with the username entered by the user. If the matching is successful, the username is considered to be correct.

In S340, the management system of the virtualization platform determines whether the user password input by the user is correct. If it is correct, execute S350. If not, the process ends.

Optionally, the user inputs the user password of the physical server, and the management system of the virtualization platform matches the stored user password with the password input by the user. If the matching is successful, the user password input by the user is considered to be correct.

In S350, the management system of the virtualization platform performs proxy installation on the physical server.

In S360, it is determined whether the agent is successfully installed. If it fails, S350 is executed, and if successful, the process is ended.

After the agent on the physical server is successfully installed, the disk can be differentially processed. Referring to FIG. 4, FIG. 4 is a flowchart of the differential processing of the disk according to the first embodiment. The disk differential processing process is as follows.

In S410, the agent detects the disk size of the physical server.

Optionally, the memory size of the physical server, the CPU frequency, and the like can also be detected.

In S420, the agent determines whether the disk space of the physical server is greater than the disk space configured by the management system of the virtualization platform for the physical server, or the agent determines whether the disk space of the physical server is greater than the disk of the virtualization platform that the management system can configure for the physical server. space.

In S430, the agent performs differential processing on the disk according to the physical server configuration.

Optionally, the disk is divided into at least two differential disks by differential processing. Accordingly, the disk file is also divided into at least two differential files, and one differential file exists in each differential disk.

In S440, the agent determines whether the disk difference is successful. If the difference is successful, S450 is executed, and if the difference fails, the process ends.

In the S450, the original disk is saved, and the physical server performs subsequent write operations on the differential disk.

Optionally, in S440, after the disk difference of the physical server is successfully succeeded, the differential file in the differential disk is migrated to the virtual machine, and when the differential file is migrated, all the split differential files may be migrated to the virtual machine one by one. You can also migrate differential files with at least two differential files as migration units according to actual needs, until all differential files are migrated to the virtual machine, that is, the physical server's disk files are completely migrated to the virtual machine.

When the differential file is migrated to the virtual machine, refer to FIG. 5. FIG. 5 is a flow chart of the differential file migration according to the first embodiment. The differential file migration process is as follows.

In S510, the management system of the virtualization platform determines whether the current network bandwidth is lower than a set threshold. If it is lower than the set threshold, S520 is performed, and if it is not lower than the set threshold, S530 is performed.

Optionally, the management system of the virtualization platform monitors network bandwidth, monitors network bandwidth through timer timing, and monitors network bandwidth in real time. When the network bandwidth is lower than a set threshold, migration may be appropriately reduced. The number of differential files, when the network bandwidth is not lower than the set threshold, the number of differential files migrated can be appropriately increased.

In S520, the split one differential file is migrated to the virtual machine.

In S530, the split at least two differential files are migrated to the virtual machine.

Optionally, all of the split all differential files can be migrated to the virtual machine with one differential file as the migration unit. The differential file may also be sorted, and all the split files that are split are migrated to the virtual machine according to the size of the difference file in a small to large order with at least one difference file as a migration unit; that is, the difference file according to the size of the difference file The differential files are migrated in order from large to small or from small to large, and their migration units can be set as needed during migration.

In S540, it is determined whether the difference file is successfully migrated. If the migration is successful, S510 is performed, and if the migration fails, the process ends.

Optionally, if the migration of the difference file is successful, the subsequent differential file is further migrated, and when the subsequent differential file is migrated, it is re-determined whether the current network bandwidth is lower than a set threshold. If the threshold is lower than the set threshold, only one difference is still migrated. The file, if not below the set threshold, choose to migrate at least two differential files until all differential files have been migrated. When the network bandwidth is not lower than the set threshold, the larger differential file can be preferentially migrated to improve the migration efficiency and ensure real-time synchronization of data.

Through the physical to virtual migration method provided in this embodiment, the disk file is split and migrated with a small differential file, thereby ensuring the rate increase, and the time taken for the migration of the smaller differential file in the process of migration Smaller, faster migration, and able to ensure real-time data synchronization. By monitoring the network bandwidth, the number of differential file migrations can be reasonably selected according to the network bandwidth status to ensure the consistency of the migration data.

Embodiment 2

In this embodiment, the operation flow on the virtual server side is taken as an example. The virtual server is deployed with a virtualization platform, and at least one virtual machine is deployed on the virtualization platform. This embodiment uses a virtual machine as an example for explanation. Referring to FIG. 6, FIG. 6 is another physical to virtual migration method provided by the second embodiment, and includes the following steps.

In S610, the differential file migrated by the physical server is received by using the differential file of at least one of the partitions as a migration unit.

Optionally, when receiving the differential file migrated by the physical server, the data may be received one by one, or at least two differential files may be received at a time, and the number of the received differential files is related to the number of differential files transmitted by the physical server at one time. The foregoing disk is obtained by splitting the disk according to a preset manner. For example, if the disk is differentially processed, a differential disk is obtained, and the differential disk is a disk; accordingly, when the disk is split, the disk file is obtained. It is also split into at least two differential files, one for each differential disk.

In S620, all the received differential files are reorganized in the order before the splitting to obtain a disk file.

Optionally, after receiving all the differential files, the virtual server needs to restore the differential file to the disk file before the splitting. When the differential file is reorganized, the unique identifier may be uniquely located in the multiple differential files. The identity reorganizes the differential file. Alternatively, the split files may be reorganized by other reorganization methods well known in the art. After the reorganization is successful, a disk file is obtained.

Optionally, after S610, the virtual machine determines whether all the differential files migrated by the physical server are received, that is, whether the differential file is completely migrated is completed, and if the differential files are all migrated, the user is notified by means of a short message, an email, or the like. At least one of the virtualization platform managers. The virtual machine can periodically detect the reception of the differential file, and can also detect the reception of the differential file in real time to determine whether the differential file has been completely migrated.

When all of the disk files in the physical server are successfully migrated to the virtual machine, the virtualization platform management system issues a notification to at least one of the administrator and the user. Optionally, the physical server migrates the differential files to the virtual machine. The virtual machine reassembles the received differential files in the order before the splitting to obtain the disk file. The disk file is determined to be correct. If the disk file is correct, the physical file is considered to be physical. The disk files in the server are successfully migrated to the virtual machine, the virtual machine starts running, and the physical server is shut down; the virtualization platform management system notifies the user and the virtualization platform administrator by SMS, mail or other means, the physical server The disk file was successfully migrated to the virtual machine.

For the message notification process after the disk file migration succeeds, refer to FIG. 7. FIG. 7 is a flowchart of the message notification after the migration is completed according to the second embodiment, and the message notification process is as follows.

In S710, the virtualization platform management system periodically detects whether the disk file is successfully migrated. If the migration is successful, S720 is executed, and if the migration fails, the process ends.

In S720, the virtual machine starts running and the physical server stops running.

In S730, it is determined whether the virtualization platform management system configures a notification function, and if the notification function is configured, Then, S740 is executed, and if the notification function is not configured, the process ends.

Optionally, the virtualization platform management system is provided with an option of adding a mobile phone number, a mailbox, and the like, and at least one of the user and the management personnel adds the mobile phone number or the mailbox.

In S740, at least one of the manager and the user is notified in accordance with the notification manner.

Optionally, the notification method includes a short message, a phone call or a mailbox.

With the physical to virtual migration method provided by the embodiment, after the disk file of the physical server is successfully migrated to the virtual machine, at least one disk file of the user and the administrator is notified that the disk file has been successfully migrated. The physical server to virtual machine migration operation is completed by receiving the differential file to ensure data consistency.

Embodiment 3

This embodiment is an apparatus embodiment corresponding to the first embodiment, and provides a physical server. On the basis of the first embodiment, the content of the physical server will not be described in detail in this embodiment. Referring to FIG. 8, FIG. 8 is a schematic diagram of a physical server according to Embodiment 3, where the physical server 8 includes the following modules.

The file splitting module 81 is configured to split the disk file into at least two differential files according to a preset rule;

The file migration module 82 is configured to migrate the at least two differential files to the virtual machine in at least one differential file as a migration unit.

The file splitting module 81 is configured to perform differential processing on the disk file to obtain at least two difference files.

Optionally, the physical server further includes a bandwidth monitoring module 83.

The bandwidth monitoring module 83 is configured to monitor the network bandwidth before migrating the at least two differential files to the virtual machine in at least one differential file as a migration unit.

The file migration module 82 is configured to migrate the at least two differential files to the virtual machine one by one when the network bandwidth is lower than a set threshold, or to sort the differential files in at least one difference file in a small to large order. The at least two differential files are migrated to the virtual machine for the migration unit.

The functions implemented by the aforementioned file splitting module 81, file migration module 82, and bandwidth monitoring module 83 can be implemented by a controller on the server.

Optionally, the physical server may be configured to provide information of the physical server to the virtualization platform management system, and the system manages the physical server according to the physical server information, where the physical server information includes an IP address, a gateway, a username, and a password. Etc, the physical server setup process please See Figure 2; after the setup is complete, install the agent on the physical server. See Figure 3 for the installation process. After the agent is installed, check the configuration of the physical server and differentiate the disk based on the detection result.

When performing the difference, the physical server's disk is divided into at least two partitions according to a preset rule, and accordingly, the disk file is also split into at least two differential files, that is, the data stored in each of the partitions is one. Differential file. The preset rule may perform differential processing on the disk in a differential form, and divide the disk into at least two partitions. A unique identifier can be set in the difference file to ensure that the virtual machine can correctly reorganize the disk file according to the unique identifier when reorganizing the differential file. Alternatively, other methods of splitting well known in the art may be employed.

Optionally, when the disk file is split into at least two differential files according to a preset rule, the disk may be divided according to the differential mode of the disk, that is, the disk is differentially processed, and at least two differential disks are divided for the physical server. (ie, the partition), correspondingly, the disk file stored in the disk is also differentiated into at least two differential files, and one differential file exists in each differential disk.

Embodiment 4

This embodiment is an apparatus embodiment corresponding to the second embodiment, and provides a virtual server. On the basis of the second embodiment, the content of the virtual server will not be described in detail in this embodiment. A virtualization platform is deployed on the virtual server, and a virtual machine is deployed on the virtualization platform. Referring to FIG. 9, FIG. 9 is a schematic diagram of a virtual server according to Embodiment 4, where the virtual server 9 includes at least one virtual machine, and the virtual machine includes the following modules.

The file receiving module 91 is configured to receive the differential file migrated by the physical server by using the differential file of at least one of the partitions as a migration unit.

The file reorganization module 92 is configured to reassemble all the received differential files in the order before the splitting to obtain a disk file.

Optionally, the file receiving module 91 is a differential file configured to receive physical server migration one by one.

The functions implemented by the aforementioned file receiving module 91 and the file recombining module 92 can be implemented by a controller on the server.

Optionally, when receiving the differential file migrated by the physical server, it may be received one by one or once. Receiving at least two differential files, the number of received differential files is related to the number of differential files transmitted by the physical server at one time. In addition, the foregoing disc is obtained by splitting the disc according to a preset manner. For example, the differential disc is obtained by differentially processing the disc, and the differential disc is a partition; accordingly, when the disk is split, The disk file is also split into at least two differential files, one for each differential disk.

After receiving all the differential files, the virtual server needs to restore the differential file to the disk file before the split. When the differential file is reorganized, the unique identifier can be differentiated according to the unique identifier. Reorganize. Alternatively, the split files may be reorganized by other reorganization methods well known in the art. After the reorganization is successful, a disk file is obtained.

Optionally, the virtual machine determines whether all the differential files migrated by the physical server are received, that is, whether the differential file is completely migrated is completed. If the differential files are all migrated, the user and the virtualization platform are notified by means of short messages, emails, and the like. At least one of the people. The virtual machine can periodically detect the reception of the differential file, and can also detect the reception of the differential file in real time to determine whether the differential file has been completely migrated.

Optionally, when all the disk files in the physical server are successfully migrated to the virtual machine, the virtualization platform management system issues a notification to at least one of the administrator and the user. Optionally, the physical server migrates the differential files to the virtual machine. The virtual machine reassembles the received differential files in the order before the splitting to obtain the disk file. The disk file is determined to be correct. If the disk file is correct, the physical file is considered to be physical. The disk files in the server are successfully migrated to the virtual machine, the virtual machine starts running, and the physical server is shut down; the virtualization platform management system notifies the user and the virtualization platform administrator by SMS, mail or other means, the physical server disk The file was successfully migrated to the virtual machine.

In addition, referring to FIG. 10, FIG. 10 is a physical to virtual migration system provided by the fourth embodiment, and the system includes the foregoing physical server 101 and virtual server 102.

Through the physical-to-virtual migration system provided in this embodiment, multiple differential files are obtained by differential processing of the disk files, and the differential files are sent to the virtual machine. Since the plurality of differential files are small, the migration efficiency is high. It also guarantees the consistency of the migrated data.

Embodiment 5

The embodiment further provides a computer readable storage medium storing computer executable instructions for performing the above method.

11 is a schematic structural diagram of a hardware of a server according to Embodiment 5, as shown in FIG. The electronic device includes a processor 111 and a memory 112; and may further include a communication interface 113 and a bus 114.

The processor 111, the memory 112, and the communication interface 113 can complete communication with each other through the bus 114. The communication interface 113 can be used for information transmission. The processor 111 can call the logic instructions in the memory 112 to perform any of the physical to virtual file migration methods of the above embodiments.

The memory 112 may include a storage program area and a storage data area, and the storage program area may store an operating system and an application required for at least one function. The storage data area can store data and the like created according to the use of the electronic device. Further, the memory may include, for example, a volatile memory of a random access memory, and may also include a non-volatile memory. For example, at least one disk storage device, flash memory device, or other non-transitory solid state storage device.

Moreover, when the logic instructions in the memory 112 described above can be implemented in the form of software functional units and sold or used as separate products, the logic instructions can be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present disclosure may be embodied in the form of a computer software product, which may be stored in a storage medium, and includes a plurality of instructions for causing a computer device (which may be a personal computer, a server, Or a network device or the like) performs all or part of the steps of the method described in this embodiment.

The storage medium may be a non-transitory storage medium or a transitory storage medium. The non-transitory storage medium may include: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes. medium.

A person skilled in the art can understand that all or part of the process of implementing the above embodiment method can be completed by a computer program indicating related hardware, and the program can be stored in a non-transitory computer readable storage medium. When executed, a flow of an embodiment of the method as described above may be included.

Obviously, those skilled in the art should understand that the multiple modules or steps of the above embodiments of the present invention may be implemented by a general-purpose computing device, which may be centralized on a single computing device or distributed among multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in a storage medium (ROM/RAM, disk, optical disk) by a computing device, and In some cases, the steps shown or described may be performed in an order different than that herein, or they may be separately fabricated into a plurality of integrated circuit modules, or Multiple modules or steps are made into a single integrated circuit module.

Industrial applicability

The present disclosure improves the reliability and migration efficiency of data migration, and ensures that data can be migrated to a virtual server in real time, ensuring data consistency throughout the migration process.

Claims

A physical to virtual file migration method, including:

Split the disk file into at least two differential files according to a preset rule; and,

The at least two differential files are migrated to the virtual machine with at least one differential file as a migration unit.
The method of claim 1, wherein the splitting the disk file into the at least two difference files according to a preset rule comprises:

The disk file is differentially processed to obtain at least two difference files.
The method of claim 1, wherein the migrating the at least two differential files to the virtual machine with the at least one differential file as a migration unit comprises:

The at least two differential files are migrated one by one to the virtual machine.
The method of any one of the preceding claims, wherein before the migrating the at least two difference files to the virtual machine in the migration unit of the at least one difference file, the method further comprises:

Monitor network bandwidth;

The migrating the at least two differential files to the virtual machine by using the at least one difference file as a migration unit includes:

When the network bandwidth is lower than a set threshold, the at least two differential files are migrated to the virtual machine one by one; or

The differential files are sorted, and the at least two differential files are migrated to the virtual machine in a small to large order with at least one differential file as a migration unit.
A physical to virtual file migration method, including:

Receiving a differential file migrated by a physical server with a differential file of at least one of the partitions; and,

All the received differential files are reorganized in the order before the split to get the disk file.
The method of claim 5, wherein the receiving the differential file migrated by the physical server by using the differential file of the at least one of the partitions as a migration unit comprises:

The differential files migrated by the physical server are received one by one.
The method of claim 5 or 6, wherein after all the differential files received are reorganized in the order before the splitting, the method further comprises:

Determining whether the disk file is successfully migrated;

If the disk file migration is successful, the notification is sent according to the preset notification mode.
A physical server that includes:

a file splitting module configured to split a disk file into at least two differential files according to a preset rule; and,

The file migration module is configured to migrate the at least two differential files to the virtual machine in at least one differential file as a migration unit.
The physical server according to claim 8, wherein said file splitting module is configured to perform differential processing on the disk file to obtain at least two difference files.
The physical server according to claim 8 or 9, further comprising:

a bandwidth monitoring module, configured to monitor network bandwidth before migrating the at least two differential files to a virtual machine by using at least one differential file as a migration unit;

The file migration module is further configured to migrate the at least two differential files to the virtual machine one by one when the network bandwidth is lower than a set threshold, or

The differential files are sorted, and the at least two differential files are migrated to the virtual machine in a small to large order with at least one differential file as a migration unit.
A virtual server is deployed with a virtual machine, where the virtual machine includes:

a file receiving module, configured to receive a differential file migrated by the physical server by using a differential file of at least one of the partitions as a migration unit; and

The file reorganization module is configured to recombine all the received differential files in the order before the split to obtain a disk file.
The virtual server of claim 11, wherein the file receiving module is a differential file configured to receive the physical server migration one by one.
A physical to virtual migration system comprising the physical server of any of claims 8-10 and the virtual server of claim 11 or 12.
A computer readable storage medium storing computer executable instructions arranged to perform the method of any of claims 1-4 and 5-7.