WO2019127191A1

WO2019127191A1 - File system sharing method and apparatus for multi-operating system, and electronic device

Info

Publication number: WO2019127191A1
Application number: PCT/CN2017/119288
Authority: WO
Inventors: 边瑞锋; 温燕飞
Original assignee: 深圳前海达闼云端智能科技有限公司
Priority date: 2017-12-28
Filing date: 2017-12-28
Publication date: 2019-07-04
Also published as: CN108369604A; CN108369604B

Abstract

The embodiments of the present application relate to a file system sharing method and an apparatus for a multi-operating system, and an electronic device. Said method comprises: a client operating system writing request data to a predetermined shared memory space, the predetermined shared memory space supporting access of at least two operating systems; notifying a server operating system of an access request of the client operating system; the server operating system querying the request data in the predetermined shared memory space, and writing reply data to the predetermined shared memory space according to the request data; notifying the client operating system of a response from the server operating system; the client operating system obtaining the reply data from the predetermined shared memory space, and mounting, according to the reply data, a target folder in the server operating system to the client operating system. The embodiments of the present application can realize file system sharing between virtual machines and between virtual machines and host machines.

Description

Method, device and electronic device for sharing file system by multiple operating systems

Technical field

The embodiments of the present application relate to the field of virtualization technologies, for example, to a method, an apparatus, and an electronic device for sharing a file system by multiple operating systems.

Background technique

Virtualization technology allows multiple operating systems to share the hardware resources of the machine. Each operating system is independent of each other and does not affect each other. It not only plays a good role in isolation, but also greatly improves the resource utilization of the system. In some application scenarios, a file system needs to be shared between virtual machines or between virtual machines and hosts. At present, the file system of the host is shared to the virtual machine system mainly through virtio, and the virtual machine mounts the file system of the host to the virtual machine through the 9pfs of the kernel.

In the process of studying the prior art, the inventor found that at least the following problems exist in the related art: in the current solution, only the file system of the shared host can be realized to the virtual machine, and the file system of the virtual machine cannot be shared to the host machine, nor can it Share file systems between virtual machines.

Summary of the invention

An object of the embodiments of the present application is to provide a method, an apparatus, and an electronic device for sharing a file system by multiple operating systems, which can implement file system sharing between virtual machines or between virtual machines and hosts.

In a first aspect, the embodiment of the present application provides a method for sharing a file system by using multiple operating systems, which is used in an electronic device, and the method includes:

The client operating system writes the request data to a preset shared memory space, and the preset shared memory space supports access by at least two operating systems;

Notifying the server operating system of the access request of the client operating system;

The server operating system queries the request data in the preset shared memory space, and writes reply data to the preset shared memory space according to the request data;

Notifying the client operating system of the reply of the server operating system;

The client operating system acquires the reply data from the preset shared memory space, and mounts a target folder in the server operating system to the client operating system according to the reply data.

In a second aspect, the embodiment of the present application further provides a device for sharing a file system by using multiple operating systems, and the device includes:

Requesting a data writing module, configured to: the client operating system writes the request data to the preset shared memory space, where the preset shared memory space supports access by at least two operating systems;

a first notification module, configured to notify the server operating system of the access request of the client operating system;

a reply data writing module, configured to query the request data in the preset shared memory space by the server operating system, and write reply data to the preset shared memory space according to the request data;

a second notification module, configured to notify the client operating system of the reply of the server operating system;

a file mounting module, configured to: obtain, by the client operating system, the reply data from the preset shared memory space, and mount the target folder in the server operating system according to the reply data Said under the client operating system.

In a third aspect, the embodiment of the present application further provides an electronic device, including:

At least one processor; and,

a memory communicatively coupled to the at least one processor; wherein

The memory stores instructions executable by the at least one processor, the instructions being executed by the at least one processor to enable the at least one processor to perform the method described above.

The method, device, and electronic device for sharing a file system in a multi-operating system provided by the embodiment of the present application are configured to provide a space that can be accessed by multiple operating systems by using a preset shared memory space, and use the preset shared memory space to store the client. An operating system access request for the server operating system and a reply data of the server operating system to the client operating system, so that the client operating system can mount the target folder in the server operating system to the client according to the reply data. Under the operating system. This enables the sharing of file systems between virtual machines and between virtual machines and hosts.

DRAWINGS

The one or more embodiments are exemplified by the accompanying drawings in the accompanying drawings, and FIG. The figures in the drawings do not constitute a scale limitation unless otherwise stated.

1 is a schematic diagram of an application scenario of the method and apparatus of the present application;

2 is a flow chart of one embodiment of a method for sharing a file system by multiple operating systems of the present application;

3 is a flow chart of one embodiment of a method for sharing a file system by multiple operating systems of the present application;

4 is a schematic flowchart of a step of writing a reset message in a method for sharing a file system by multiple operating systems according to an embodiment of the present application;

5 is a schematic structural diagram of an embodiment of an apparatus for sharing a file system by multiple operating systems according to the present application;

6 is a schematic structural diagram of an embodiment of an apparatus for sharing a file system by multiple operating systems according to the present application;

FIG. 7 is a schematic structural diagram of hardware of an electronic device according to an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present application. It is a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present application without departing from the inventive scope are the scope of the present application.

The method and apparatus for the multi-operating system shared file system provided by the present application can be used in the application scenario shown in FIG. 1 , where the application scenario includes an electronic device 10 , and multiple virtual machines are installed on the electronic device 10 ( FIG. 1 shows A case where three virtual machines are installed on one electronic device 10. As shown in FIG. 1 , the electronic device 10 itself is installed with an operating system OS as a host, an operating system OS1 is installed on the virtual machine 1 , an operating system OS 2 is installed on the virtual machine 2 , and an operating system OS 3 is installed on the virtual machine 3 . The operating system is, for example, a Linux operating system. Among them, one of the above host machines and a plurality of virtual machines may be selected as a server, and other virtual machines or hosts are used as clients, and the server is used to respond to data access requests of the client. A memory space may be opened on the electronic device 10 as a shared memory space, and part or all of the plurality of operating systems may be accessed by the shared memory technology. The shared memory space is used to store an access request of the client operating system for the server operating system, and a reply data of the server operating system to the client operating system, so that the client operating system can be used in the server operating system according to the reply data. The target folder is mounted under the client operating system. This enables the sharing of file systems between virtual machines and between virtual machines and hosts.

The method for sharing a file system by multiple operating systems provided by the embodiments of the present application may be performed by the electronic device 10 shown in FIG. 1, as shown in FIG. 2, the method includes:

101: The client operating system writes the request data to a preset shared memory space, where the preset shared memory space supports access by at least two operating systems.

Optionally, before the step 101, the method further includes: setting the preset shared memory space, so that at least two operating systems can access the memory space. In practical applications, a memory space can be opened in the memory of the host machine by using the shared memory technology as a preset shared memory space, and the virtual machine or the host that needs to share the file system can access the preset shared memory space.

102: Notify the server operating system of the access request of the client operating system.

Specifically, if the client is a host and the server is a virtual machine, the notification can be implemented by sending an interrupt request from the client operating system to the server operating system. If the client is a virtual machine and the server is the host, the notification can be implemented by sending a trap instruction to the server operating system from the client operating system. For example, in the Linux operating system, VMM can be used. Machine Monitor, virtual machine monitor) caught up with instructions to notify. If both the client and the server are virtual machines, the client operating system is required to send a trap instruction to the host, and then the host sends an interrupt request to the server operating system. That is, the host to the virtual machine can pass the interrupt request, and the virtual machine to the host machine can be trapped by the instruction, and the virtual machine needs to first insert the instruction into the host machine, and then the host sends an interrupt request to the virtual machine.

103: The server operating system queries the request data in the preset shared memory space, and writes reply data to the preset shared memory space according to the request data.

The server operating system queries the request data in the preset shared memory space, and responds to the request, and writes the reply data into the preset shared memory space. The server operating system may further clear the request data in the preset shared memory space to reduce the occupation of the memory space.

104: Notify the client operating system of the reply of the server operating system.

Specifically, if the server is a host and the client is a virtual machine, the notification can be implemented by sending an interrupt request from the server operating system to the client operating system. If the server is a virtual machine and the client is a host, the notification can be implemented by sending a trapped instruction to the client operating system from the server operating system. For example, in the Linux operating system, the VMM can be used. Machine Monitor, virtual machine monitor) caught up with instructions to notify. If both the client and the server are virtual machines, the server operating system first needs to send a trap instruction to the host, and then the host sends an interrupt request to the client operating system.

Step 105: The client operating system acquires the reply data from the preset shared memory space, and mounts a target folder in the server operating system to the client operating system according to the reply data. under.

The reply data may be the content of the target folder requested by the client operating system, or may be an attribute of the target folder, by which the client operating system can obtain the content of the target folder, and The target folder is mounted to the client operating system. Take the Linux operating system as an example. You can mount the target folder to the current operating system through the mount command of the 9P module in the Linux kernel.

The embodiment of the present application provides a space that can be accessed by multiple operating systems by using a preset shared memory space, and uses the preset shared memory space to store an access request of the client operating system for the server operating system, and a server operating system. The reply data to the client operating system, so that the client operating system can mount the target folder in the server operating system under the client operating system according to the reply data. This enables the sharing of file systems between virtual machines and between virtual machines and hosts. The embodiment of the present application does not require network communication between virtual machines or hosts, and the file system can be conveniently shared.

Optionally, in order to enable multiple client operating systems to access the server operating system at the same time, the preset shared memory space may be divided into multiple shared areas, for example, divided into multiple buffers, and each shared area is used to store corresponding clients. The end request data, and the server's reply data to the corresponding client. The number and size of the shared area in which the shared memory space is divided may be allocated according to actual conditions. Take the four operating systems shown in Figure 1 as an example. If the OS is used as the server operating system, OS1, OS2, and OS3 are used as the client operating system. The preset shared memory space can be divided into three shared areas, that is, a first shared area, a second shared area, and a third shared area. The first shared area may be used to store OS1's request data for the OS and the OS's reply data to OS1. The second shared area may be used to store OS2's request data for the OS and the OS's reply data to OS2. The third shared area may be used to store OS3's request data for the OS and the OS's reply data to the OS3. The server operating system can clear the request data in the shared area before writing the reply data in the shared area.

In other embodiments, the preset shared memory space may also be divided into six shared areas, that is, a first shared area, a second shared area, a third shared area, a fourth shared area, a fifth shared area, and a sixth share. region. The first shared area may be used to store the request data of the OS1 to the OS, the second shared area may be used to store the request data of the OS2 to the OS, and the third shared area may be used to store the request data of the OS3 to the OS. The fourth shared area is used to store the reply data of the OS to the OS1, the fifth shared area is used to store the reply data of the OS to the OS2, and the sixth shared area is used to store the reply data of the OS to the OS3. The correspondence between the request data of the client operating system and the shared area and the correspondence between the reply data of the server operating system and the shared operating system of the client operating system may be recorded in a message structure for storing the shared area information (for example, a linked list) In the data structure).

Through the message structure, each client operating system can know which shared area its request data to the server operating system should be written to. When the server operating system replies to each client operating system, the message structure can also know that the reply should be replied. Which shared area the data is written to. 3 is a schematic flow chart of another embodiment of the method. As shown in FIG. 3, the method includes:

201: Set a preset shared memory space, so that at least two operating systems can access the preset shared memory space.

202: Divide the preset shared memory space into at least two shared areas, and establish an information structure for storing the at least two shared area information.

203: Determine, according to the information structure, an available sharing area of the client in the preset shared memory space, and write the request data to the available shared area.

204: Notify the server operating system of the access request of the client operating system.

205. Determine, according to the information structure, a shared area in which the request data is stored in the preset shared memory space, and query the request data in the shared area.

206: Determine an available sharing area of the reply data according to the information structure, and write the reply data into the shared area according to the request data.

207: Notify the client operating system of the reply of the server operating system.

208. Determine, according to the information structure, a shared area in which the reply data is stored in the preset shared memory space, and obtain the reply data in the shared area. And mounting a target folder in the server operating system to the client operating system according to the reply data.

In the embodiment of the present invention, by dividing the preset shared memory space into multiple shared areas, multiple client operating systems can write request data in a preset shared memory space in the same time period to initiate an access request to the server operating system. The operating system can respond to requests from the client operating system according to its own operating conditions. It is more efficient than a solution that can only process one client operating system data request at a time.

In an actual application, when the server operating system runs busy and cannot respond to the request message written by the client operating system, the request message may be in a blocked state until the server operating system starts processing the request message. If the server operating system crashes and the service is abnormal, after the server operating system restarts, a reset message may be sent to the corresponding client operating system, so that the client operating system can initialize its corresponding shared area and rewrite. Request data to establish a connection with the server operating system. When the client operating system sends an illegal request to the server operating system, the server operating system may also send a reset message to the corresponding client operating system to interrupt the processing request. The server operating system sends a reset message in a similar manner to the write reply data. As shown in FIG. 4, the method further includes:

301: The server operating system writes a reset message for the client operating system to the preset shared memory space.

When the preset shared space is divided into multiple shared areas, the server operating system may write a reset message to one of the shared areas. Specifically, the client operating system is determined according to the message structure. The shared area is written to the shared area.

302: Notify the client operating system of a reset message of the server operating system.

For the specific method of the notification, refer to step 104, and details are not described herein again.

303: The client operating system acquires the reset message from the preset shared memory space, and re-initializes the preset shared memory space according to the reset message.

When the preset shared space is divided into multiple shared areas, the client operating system first determines a shared area corresponding to the client operating system according to the message structure, and then reads a reset message from the shared area. .

It should be noted that the serial numbers in the embodiments of the present application are only for ease of understanding, and do not limit the order of the steps.

Correspondingly, the embodiment of the present application further provides a device for sharing a file system by using multiple operating systems, which can be used in the electronic device 10 of FIG. 1. As shown in FIG. 5, the device 400 includes:

The request data writing module 401 is configured to: the client operating system writes the request data to the preset shared memory space, where the preset shared memory space supports access by at least two operating systems;

The first notification module 402 is configured to notify the server operating system of the access request of the client operating system;

a reply data writing module 403, configured to query the request data in the preset shared memory space by the server operating system, and write reply data to the preset shared memory space according to the request data;

a second notification module 404, configured to notify the client operating system of the reply of the server operating system;

a file mounting module 405, configured to: acquire, by the client operating system, the reply data from the preset shared memory space, and mount the target folder in the server operating system according to the reply data to Under the client operating system.

The embodiment of the present application provides a space that can be accessed by multiple operating systems by using a preset shared memory space, and uses the preset shared memory space to store an access request of the client operating system for the server operating system, and a server operating system. The reply data to the client operating system, so that the client operating system can mount the target folder in the server operating system under the client operating system according to the reply data. This enables the sharing of file systems between virtual machines and between virtual machines and hosts.

Optionally, in other embodiments of the device, referring to FIG. 6, the device 400 further includes:

The partitioning module 406 is configured to divide the preset shared memory space into at least two shared areas, and establish an information structure for storing the at least two shared area information.

The request data writing module 401 is specifically configured to:

Determining, according to the information structure, an available sharing area of the client in the preset shared memory space, and writing the request data to the available shared area.

The reply data writing module 403 is specifically configured to:

Determining, according to the information structure, a shared area in the preset shared memory space that stores the request data, and querying the request data in the shared area.

Determining an available sharing area of the reply data according to the information structure, and writing the reply data into the shared area according to the request data.

The file mount module 405 is specifically configured to:

Determining, according to the information structure, a shared area in the preset shared memory space that stores the reply data, and acquiring the reply data in the shared area.

Optionally, in other embodiments of the device 400, referring to FIG. 6, the device 400 further includes:

The reset message writing module 407 is configured to write, by the server operating system, a reset message for the client operating system to the preset shared memory space.

The initialization module 408 is configured to obtain, by the client operating system, the reset message from the preset shared memory space, and reinitialize the preset shared memory space according to the reset message.

The second notification module 404 is further configured to notify the client operating system of a reset message of the server operating system.

Optionally, in some embodiments of the device 400, the first notification module 402 is specifically configured to:

If the client is the host and the server is a virtual machine, the interrupt request is sent from the client operating system to the server operating system;

If the client is a virtual machine and the server is the host, the sink command is sent from the client operating system to the server operating system;

If both the client and the server are virtual machines, the client operating system sends a trap instruction to the host, and then the host sends an interrupt request to the server operating system.

The second notification module 404 is specifically configured to:

If the server is the host and the client is a virtual machine, the interrupt request is sent from the server operating system to the client operating system;

If the server is a virtual machine and the client is a host, the server is sent from the server operating system to the client operating system;

If both the client and the server are virtual machines, the slave operating system sends a trap instruction to the host, and then the host sends an interrupt request to the client operating system.

The shared memory space setting module 409 is configured to set the preset shared memory space, so that at least two operating systems can access the preset shared memory space.

It should be noted that the foregoing apparatus can perform the method provided by the embodiment of the present application, and has the corresponding functional modules and beneficial effects of the execution method. For technical details that are not described in detail in the device embodiments, reference may be made to the methods provided in the embodiments of the present application.

FIG. 7 is a schematic structural diagram of hardware of an electronic device 10 according to an embodiment of the present disclosure. As shown in FIG. 7, the electronic device 10 includes:

One or more processors 11 and a memory 12 are exemplified by a processor 11 in FIG.

The processor 11 and the memory 12 can be connected by a bus or other means, as exemplified by a bus connection in FIG.

The memory 12 is a non-volatile computer readable storage medium, and can be used for storing non-volatile software programs, non-volatile computer-executable programs, and modules, such as program instructions/modules corresponding to the methods in the embodiments of the present application. (For example, the request data writing module 401, the first notification module 402, the reply data writing module 403, the second notification module 404, and the file mounting module 405 shown in FIG. 5). The processor 11 executes various functional applications of the server and data processing by executing non-volatile software programs, instructions, and modules stored in the memory 12, that is, implementing the methods of the above method embodiments.

The memory 12 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application required for at least one function; the storage data area may store an operation created according to the use of the device sharing the file system by the multiple operating system. Data, etc. Further, the memory 12 may include a high speed random access memory, and may also include a nonvolatile memory such as at least one magnetic disk storage device, flash memory device, or other nonvolatile solid state storage device. In some embodiments, memory 12 can optionally include memory remotely located relative to processor 11 that can be connected to electronic device 10 over a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.

The one or more modules are stored in the memory 12, and when executed by the one or more processors 11, performing a method of sharing a file system by multiple operating systems in any of the above method embodiments, for example, performing the above The method steps 101 to 105 in FIG. 2, the method steps 201 to 208 in FIG. 3, and the method steps 301 to 303 in FIG. 4 implement the modules 401-405 and FIG. 6 in FIG. The function of 401-409.

The above products can perform the methods provided by the embodiments of the present application, and have the corresponding functional modules and beneficial effects of the execution method. For technical details that are not described in detail in this embodiment, reference may be made to the method provided by the embodiments of the present application.

The electronic device of the embodiment of the present application exists in various forms, including but not limited to:

(1) Mobile communication devices: These devices are characterized by mobile communication functions and are mainly aimed at providing voice and data communication. Such terminals include: smart phones (such as iPhone), multimedia phones, functional phones, and low-end phones.

(2) Ultra-mobile personal computer equipment: This type of equipment belongs to the category of personal computers, has computing and processing functions, and generally has mobile Internet access. Such terminals include: PDAs, MIDs, and UMPC devices, such as the iPad.

(3) Portable entertainment devices: These devices can display and play multimedia content. Such devices include: audio, video players (such as iPod), handheld game consoles, e-books, and smart toys and portable car navigation devices.

(4) Server: A device that provides computing services. The server consists of a processor, a hard disk, a memory, a system bus, etc. The server is similar to a general-purpose computer architecture, but because of the need to provide highly reliable services, processing power and stability High reliability in terms of reliability, security, scalability, and manageability.

(5) Intelligent robots.

(6) Other electronic devices with data interaction functions.

The embodiment of the present application provides a non-transitory computer readable storage medium storing computer-executable instructions that are executed by one or more processors, such as in FIG. The processor 11 may be configured to cause the one or more processors to perform the method in any of the foregoing method embodiments, for example, to perform the method steps 101 to 105 in FIG. 2 described above, the method step 201 in FIG. Go to step 208, method steps 301 to 303 in FIG. 4, and implement the functions of modules 401-405 and modules 401-409 in FIG.

The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, ie may be located A place, or it can be distributed to multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

Through the description of the above embodiments, those skilled in the art can clearly understand that the various embodiments can be implemented by means of software plus a general hardware platform, and of course, by hardware. A person skilled in the art can understand that all or part of the process of implementing the above embodiments can be completed by a computer program to instruct related hardware, and the program can be stored in a computer readable storage medium. When executed, the flow of an embodiment of the methods as described above may be included. The storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM) or a random storage memory (Random). Access Memory, RAM), etc.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not limited thereto; in the idea of the present application, the technical features in the above embodiments or different embodiments may also be combined. The steps may be carried out in any order, and there are many other variations of the various aspects of the present application as described above, which are not provided in the details for the sake of brevity; although the present application has been described in detail with reference to the foregoing embodiments, The skilled person should understand that the technical solutions described in the foregoing embodiments may be modified, or some of the technical features may be equivalently replaced; and the modifications or substitutions do not deviate from the embodiments of the present application. The scope of the technical solution.

Claims

A method for sharing a file system by a plurality of operating systems for an electronic device, the method comprising:

The client operating system writes the request data to a preset shared memory space, and the preset shared memory space supports access by at least two operating systems;

Notifying the server operating system of the access request of the client operating system;

The server operating system queries the request data in the preset shared memory space, and writes reply data to the preset shared memory space according to the request data;

Notifying the client operating system of the reply of the server operating system;

The client operating system acquires the reply data from the preset shared memory space, and mounts a target folder in the server operating system to the client operating system according to the reply data.
The method of claim 1 further comprising:

Dividing the preset shared memory space into at least two shared areas, and establishing an information structure for storing the at least two shared area information;

The client operating system writes the request data to the preset shared memory space, including:

Determining, according to the information structure, an available sharing area of the client in the preset shared memory space, and writing the request data to the available shared area;

The server operating system queries the request data in the preset shared memory space, and writes reply data to the preset shared memory space according to the request data, including:

Determining, according to the information structure, a shared area in the preset shared memory space that stores the request data, and querying the request data in the shared area;

Determining an available sharing area of the reply data according to the information structure, and writing the reply data to the shared area according to the request data;

The client operating system acquires the reply data from the preset shared memory space, including:

Determining, according to the information structure, a shared area in the preset shared memory space that stores the reply data, and acquiring the reply data in the shared area.
The method of claim 1 further comprising:

The server operating system writes a reset message for the client operating system to the preset shared memory space;

Notifying the client operating system of a reset message of the server operating system;

The client operating system acquires the reset message from the preset shared memory space, and re-initializes the preset shared memory space according to the reset message.
The method according to any one of claims 1-3, wherein the client operating system notifies the server operating system, including:

If the client is the host and the server is a virtual machine, the interrupt request is sent from the client operating system to the server operating system;

If the client is a virtual machine and the server is the host, the sink command is sent from the client operating system to the server operating system;

If both the client and the server are virtual machines, the client operating system sends a trap instruction to the host, and then the host sends an interrupt request to the server operating system;

The server operating system notifies the client operating system, including:

If the server is the host and the client is a virtual machine, the interrupt request is sent from the server operating system to the client operating system;

If the server is a virtual machine and the client is a host, the server is sent from the server operating system to the client operating system;

If both the client and the server are virtual machines, the slave operating system sends a trap instruction to the host, and then the host sends an interrupt request to the client operating system.
The method according to claim 1, wherein the method further comprises: setting the preset shared memory space so that at least two operating systems can access the preset shared memory space.
An apparatus for sharing a file system by a plurality of operating systems, for an electronic device, wherein the device comprises:

Requesting a data writing module, configured to: the client operating system writes the request data to the preset shared memory space, where the preset shared memory space supports access by at least two operating systems;

a first notification module, configured to notify the server operating system of the access request of the client operating system;

a reply data writing module, configured to query the request data in the preset shared memory space by the server operating system, and write reply data to the preset shared memory space according to the request data;

a second notification module, configured to notify the client operating system of the reply of the server operating system;

a file mounting module, configured to: obtain, by the client operating system, the reply data from the preset shared memory space, and mount the target folder in the server operating system according to the reply data Said under the client operating system.
The device according to claim 6, wherein the device further comprises:

a partitioning module, configured to divide the preset shared memory space into at least two shared areas, and establish an information structure for storing the at least two shared area information;

The request data writing module is specifically configured to:

Determining, according to the information structure, an available sharing area of the client in the preset shared memory space, and writing the request data to the available shared area;

The reply data writing module is specifically configured to:

Determining, according to the information structure, a shared area in the preset shared memory space that stores the request data, and querying the request data in the shared area;

Determining an available sharing area of the reply data according to the information structure, and writing the reply data to the shared area according to the request data;

The file mounting module is specifically configured to:

Determining, according to the information structure, a shared area in the preset shared memory space that stores the reply data, and acquiring the reply data in the shared area.
The device according to claim 6, wherein the device further comprises:

And a reset message writing module, configured to write, by the server operating system, a reset message for the client operating system to the preset shared memory space;

An initialization module, configured to obtain, by the client operating system, the reset message from the preset shared memory space, and reinitialize the preset shared memory space according to the reset message;

The second notification module is further configured to notify the client operating system of a reset message of the server operating system.
The device according to any one of claims 6-8, wherein the first notification module is specifically configured to:

If the client is the host and the server is a virtual machine, the interrupt request is sent from the client operating system to the server operating system;

If the client is a virtual machine and the server is the host, the sink command is sent from the client operating system to the server operating system;

If both the client and the server are virtual machines, the client operating system sends a trap instruction to the host, and then the host sends an interrupt request to the server operating system;

The second notification module is specifically configured to:

If the server is the host and the client is a virtual machine, the interrupt request is sent from the server operating system to the client operating system;

If the server is a virtual machine and the client is a host, the server is sent from the server operating system to the client operating system;

If both the client and the server are virtual machines, the slave operating system sends a trap instruction to the host, and then the host sends an interrupt request to the client operating system.
An electronic device, comprising:

At least one processor; and,

a memory communicatively coupled to the at least one processor; wherein

The memory stores instructions executable by the at least one processor, the instructions being executed by the at least one processor to enable the at least one processor to perform the method of any of claims 1-5 method.
A non-transitory computer readable storage medium, wherein the computer readable storage medium stores computer executable instructions that, when executed by an electronic device, cause the electronic device to enforce rights The method of any of 1-5 is claimed.
A computer program product, comprising: a computer program stored on a non-transitory computer readable storage medium, the computer program comprising program instructions, when the program instructions are executed by an electronic device The electronic device is caused to perform the method of any of claims 1-5.