CN116661945A - Virtual machine management method, system, electronic device and storage medium - Google Patents

Abstract

The present application provides a virtual machine management method, system, electronic equipment, and storage medium; the virtual machine management method includes: starting a virtual machine monitor, and creating a first pseudo-terminal and a second pseudo-terminal, while the virtual machine monitors The virtual machine starts the virtual machine, so that the virtual machine runs on the first pseudo-terminal; then the virtual machine outputs the serial port log to the first pseudo-terminal, the first pseudo-terminal outputs the serial port log to the second pseudo-terminal, and the virtual The machine monitor monitors the log input status of the second pseudo-terminal, and when it detects that the second pseudo-terminal has received the serial port log, it reads and stores the serial port log through the virtual machine monitor. The application uses the serial port logs obtained by the virtual machine monitor to solve problems in a timely manner according to the serial port logs when problems occur in the virtual machine, so as to save problem location time, improve problem location efficiency, and ensure project delivery.

Description

Virtual machine management method, system, electronic device and storage medium

technical field

The present application relates to the field of virtual machine setting, and in particular to a virtual machine management method, system, electronic equipment and storage medium.

Background technique

A hypervisor is a virtual machine monitor and a carrier for creating or running virtual machines. At least one virtual machine runs on the virtual machine monitor, and the virtual machine is called a client; the virtual machine monitor runs on a computer, and the computer can be called a host. The virtual machine monitor is used to create a virtual operating system for the guest operating systems, so as to manage the operation of each guest operating system. And each guest operating system can share virtualized hardware resources, so that different guest operating systems can run on one computer, and can share a kernel at the same time; wherein, the guest operating systems can be Linux, Windows or MacOS.

In the emerging central control system, the instrument and the entertainment system run on the same set of hardware and are managed by a virtual machine monitor. However, currently, the virtual machine monitor cannot monitor the virtual machine after starting the virtual machine, and cannot obtain the virtual machine log. When there is a problem with the virtual machine, the virtual machine monitor cannot solve it in time.

Contents of the invention

In order to solve the above technical problems, the present application provides a virtual machine management method, system, electronic equipment and storage medium. By starting the virtual machine after the virtual machine monitor is started, the virtual machine can output serial port logs to the first pseudo-terminal, and the second A pseudo-terminal outputs the serial port log to the second pseudo-terminal, so as to complete the reading and processing of the serial port log by the second pseudo-terminal according to the log input status of the second pseudo-terminal monitored by the virtual machine monitor storage.

Specifically, the present application provides a virtual machine management method, including the following steps:

S10: After the virtual machine monitor finishes starting, start the virtual machine.

S20: The virtual machine automatically outputs the serial port log to the first pseudo-terminal, and the first pseudo-terminal outputs the serial port log to the second pseudo-terminal.

S30: When the second pseudo-terminal receives the serial port log, the virtual machine monitor reads and stores the serial port log.

The above method can be used to read the serial port log of the virtual machine, so that when a problem occurs in the virtual machine, the virtual machine monitor can solve the problem in time according to the serial port log.

The step S10 further includes: creating a first pseudo-terminal and a second pseudo-terminal through the virtual machine monitor, and starting and running a virtual machine on the first pseudo-terminal; the first pseudo-terminal and the second pseudo-terminal are a For a virtual character device that provides a two-way communication channel; the first pseudo-terminal provides an interface, and any content written in the second pseudo-terminal will be transmitted to the first application program that opens the first pseudo-terminal; writing to the first pseudo-terminal Any content can also be read by a second application connected to the second pseudo-terminal.

Create the first pseudo-terminal and the second pseudo-terminal, so that the serial port log of the virtual machine is output to the second pseudo-terminal through the first pseudo-terminal, and the second pseudo-terminal is connected to the second application program, so that the serial port log can be passed through the the second application to read it.

The step S20 further includes: the virtual machine monitor monitors the log input status of the second pseudo-terminal through the second application program; the log input status includes a first status and a second status.

The log input status of the second pseudo-terminal is monitored through the second application program to determine whether the serial log is normally output from the first pseudo-terminal.

When the log input state is the first state, it is determined that the current second pseudo-terminal has received the serial port log, and the serial port log is read and stored by the virtual machine monitor; when the log input state is the second In the second state, it is determined that the second pseudo-terminal has not received the serial port log, and the virtual machine monitor continues to monitor the log input status of the second pseudo-terminal through the second application program.

The log input status includes two. The first status indicates that the second pseudo-terminal has data to read, and the serial port log input is normal, while the second status indicates that the second pseudo-terminal has no data to read, and the serial port log is not output from the first pseudo-terminal to The second pseudo-terminal belongs to the data blocking state; by monitoring the log input status, it can be determined whether the second pseudo-terminal has data readable, so as to realize further reading and storage of serial port logs.

Based on the same inventive concept, the present application also provides a virtual machine serial port log reading system, the system comprising:

Startup module: used to start the virtual machine after the virtual machine monitor finishes starting.

The first output module: used for the virtual machine to automatically output serial port logs to the first pseudo-terminal.

The second output module: used for the first pseudo-terminal to output the serial log to the second pseudo-terminal.

A reading module: used for, when the second pseudo-terminal receives the serial port log, the virtual machine monitor reads the serial port log through the second application program and stores it.

The system also includes:

Creation module: used to create the first pseudo-terminal and the second pseudo-terminal.

Monitoring module: used for the virtual machine monitor to monitor the log input state of the second pseudo-terminal through the second application program; the log input state includes a first state and a second state; when the log input state When it is the first state, transfer to the reading module; when the log input state is the second state, the virtual machine monitor continues to monitor the log input of the second pseudo-terminal through the second application program state.

The reading and storage of serial port logs can be realized through the above system, so that when a problem occurs in the virtual machine, the virtual machine monitor can solve the problem in time according to the read serial port log.

Based on the same inventive concept, the present application also provides an electronic device, including: a memory and a processor, the memory and the processor are connected to each other in communication, and computer instructions are stored in the memory, and the processor executes the The computer instructs to execute the virtual machine management method.

Based on the same inventive concept, the present application also provides a storage medium, which is one of the computer-readable storage media, and the computer-readable storage medium stores computer instructions, and the computer instructions are used to make the computer execute the virtual machine Management method.

Compared with the prior art, the beneficial effects of the present application are:

The serial port log obtained by the application through the virtual machine monitor can realize that when a problem occurs in the virtual machine, the problem can be solved in time according to the serial port log, so as to save the problem location time, improve the problem location efficiency, and ensure the project delivery; solve After starting the virtual machine, the virtual machine monitor in the prior art cannot monitor the virtual machine, and cannot obtain the virtual machine log; so that when a problem occurs in the virtual machine, the virtual machine monitor cannot solve the technical problem in time.

Description of drawings

FIG. 1 is a flow chart of the virtual machine management method described in this application.

FIG. 2 is a system frame diagram of the virtual machine management method described in FIG. 1 .

Detailed ways

The embodiment of the present application provides a virtual machine management method, system, electronic equipment and storage medium; to solve the problem that the virtual machine monitor in the prior art cannot monitor the virtual machine after starting the virtual machine, and cannot obtain the virtual machine log; so that When there is a problem with the virtual machine, the technical problem that the virtual machine monitor cannot solve in time.

The technical solution of this application provides a virtual machine management method, the general idea is as follows:

Start a virtual machine monitor, and create a first pseudo-terminal and a second pseudo-terminal, and at the same time, the virtual machine monitor starts a virtual machine so that the virtual machine runs on the first pseudo-terminal; then the virtual machine sends to the first pseudo-terminal The pseudo-terminal outputs the serial port log, the first pseudo-terminal outputs the serial port log to the second pseudo-terminal, the virtual machine monitor monitors the log input status of the second pseudo-terminal, and when the second pseudo-terminal receives the When the serial port log is used, the virtual machine monitor is used to read and store the serial port log.

A virtual machine management method, system, electronic device, and storage medium of the present application will be further described in detail below in conjunction with specific embodiments and accompanying drawings.

As shown in Figure 1, the technical solution of the present application provides a virtual machine management method, including the following steps:

S10: After the virtual machine monitor finishes starting, start the virtual machine.

It also includes: creating a first pseudo-terminal and a second pseudo-terminal through the virtual machine monitor, so that the virtual machine runs on the first pseudo-terminal; wherein, the first pseudo-terminal is, for example, a subordinate pseudo-terminal, and the second pseudo-terminal For example, the master pseudo-terminal.

Specifically, after the virtual machine monitor is started, a first pseudo-terminal and a second pseudo-terminal are created, and the virtual machine is started and run on the first pseudo-terminal.

Among them, the first pseudo-terminal and the second pseudo-terminal are a pair of virtual character devices that provide a two-way communication channel. The first pseudo-terminal provides an interface that behaves like a traditional terminal. Anything written in the second pseudo-terminal is transmitted to the first application that opened the first pseudo-terminal; Can be read by a second application connected to a second pseudo-terminal.

The virtual character device can be considered as a combination of a virtual device and a character device. It is a device that can be shared by multiple processes on a computer, and the bytes can only be read one by one, and the data must be read in sequence.

The virtual machine opens the first pseudo-terminal through the first application, and connects the virtual machine to the first pseudo-terminal, so that the virtual machine can run on the first pseudo-terminal; the second application connects to the second pseudo-terminal, and the second The application program can monitor the log input status of the second pseudo-terminal, and can also read the serial log written in the first pseudo-terminal and transmitted to the second pseudo-terminal; the second application program is, for example, a monitor program.

S20: The virtual machine automatically outputs the serial port log to the first pseudo-terminal, and the first pseudo-terminal outputs the serial port log to the second pseudo-terminal.

It also includes: the virtual machine monitor monitors the log input status of the second pseudo-terminal through the second application program; the log input status includes a first status and a second status.

It should be noted that the first state is a ready state, and the second state is a block state.

Wherein, the ready state indicates that the current master control pseudo-terminal has data readable, and these readable data are the serial port log data transmitted from the slave pseudo-terminal; the block state indicates that the current master control pseudo-terminal has no data to read, which belongs to the data blocked state.

Specifically, the virtual machine automatically outputs the serial port log to the slave pseudo-terminal, and the slave pseudo-terminal outputs the serial port log to the master pseudo-terminal.

It should be noted that because the serial port log of the virtual machine will be output to the default terminal of the system, and the virtual machine runs on the slave pseudo-terminal, the default terminal of the system is the slave pseudo-terminal; therefore, the serial port log of the virtual machine will be output to on the slave pseudo-terminal.

Wherein, the serial port log is an Android system log, but not limited thereto.

S30: When the second pseudo-terminal receives the serial port log, the virtual machine monitor reads and stores the serial port log.

Specifically, when the log input state is the first state, it is determined that the second pseudo-terminal has received the serial port log, and the serial port log is read and stored by the virtual machine monitor.

When the log input state is the second state, it is determined that the current second pseudo-terminal has not received the serial port log, and the virtual machine monitor continues to monitor the log input of the second pseudo-terminal through the second application program state.

As shown in Figure 2, the technical solution of the present application also provides a virtual machine serial port log reading system, the system comprising:

Startup module: used to start the virtual machine after the virtual machine monitor finishes starting.

The first output module: used for the virtual machine to automatically output serial port logs to the first pseudo-terminal.

The second output module: used for the first pseudo-terminal to output the serial log to the second pseudo-terminal.

Wherein, the first pseudo-terminal is a slave pseudo-terminal, and the second pseudo-terminal is a master pseudo-terminal.

It should be noted that the slave pseudo-terminal and the master pseudo-terminal are a pair of virtual character devices that provide two-way communication channels, and they can be collectively referred to as pseudo-terminals; among them, the slave pseudo-terminal corresponds to a file in the /dev/pts/ directory , while the master pseudo-terminal is identified in memory as a file descriptor (fd). Pseudo-terminals are provided by a terminal emulator, which is an application running in user mode.

The master pseudo-terminal is closer to the end of the user's monitor and keyboard, and the slave pseudo-terminal is a CLI (Command Line Interface, command line interface) program running on the virtual terminal. The Linux pseudo-terminal driver will forward the data written by the master pseudo-terminal (such as a keyboard) to the slave pseudo-terminal for program input, and forward the data written by the program to the slave pseudo-terminal to the master pseudo-terminal for display driver to read. Pick.

The terminal desktop program we open, such as GNOME Terminal, is actually a terminal emulation software. When the terminal emulation software is running, it creates a pseudo-terminal pair of master and slave by opening the /dev/ptmx file and letting the shell run on the slave. When the user presses a keyboard key in the terminal emulation software, it generates a byte stream and writes it to the master, and the shell process can read input from the slave; the shell and its subroutines write the output to the slave. On the slave side, the terminal emulation software is responsible for printing characters to the window.

A reading module: used for, when the second pseudo-terminal receives the serial port log, the virtual machine monitor reads the serial port log through a second application program and stores it.

The system also includes:

A creation module: used to create the first pseudo-terminal and the second pseudo-terminal through a virtual machine monitor.

Wherein, after the startup of the virtual machine monitor is completed, the first pseudo-terminal and the second pseudo-terminal are created, so that the virtual machine runs on the first pseudo-terminal when starting.

Monitoring module: used for the virtual machine monitor to monitor the log input state of the second pseudo-terminal through the second application program; the log input state includes the first state and the second state; when the log input state is the first In the first state, transfer to the reading module; when the log input state is in the second state, the virtual machine monitor continues to monitor the log input state of the second pseudo-terminal through the second application program.

Wherein, the first state is a ready state, and the second state is a block state; when the log input state is a ready state, transfer to the reading module; when the log input state is a block state, continue to monitor the The log input status of the second pseudo-terminal.

The technical solution of the present application also provides an electronic device, including: a memory and a processor, the memory and the processor are connected to each other in communication, the memory stores computer instructions, and the processor executes the instructions, so as to execute the virtual machine management method.

The memory in the embodiment of the present application is used to store various types of data to support the operation of the electronic device. Examples of such data include: any computer program used to operate on an electronic device. It can be understood that the memory may be a volatile memory or a non-volatile memory, and may also include both volatile and non-volatile memory.

Among them, the non-volatile memory can be read-only memory, programmable read-only memory, erasable programmable read-only memory, electrically erasable programmable read-only memory, magnetic random access memory, flash memory, magnetic surface memory, CD-ROM or CD-ROM.

Volatile memory can be random access memory, static random access memory, synchronous static random access memory, dynamic random access memory, synchronous dynamic random access memory, double data rate synchronous dynamic random access memory, enhanced Synchronous DRAM, Synchronous Linked DRAM, or DMB RAM.

It should be noted that the memory described in the embodiments of the present application is intended to include but not limited to these and any other suitable types of memory.

The methods disclosed in the foregoing embodiments of the present application may be applied to, or implemented by, a processor. A processor may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by an integrated logic circuit of hardware in a processor or an instruction in the form of software.

The above-mentioned processor may be a general-purpose processor, or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like. The processor may implement or execute the various methods, steps, and logic block diagrams disclosed in the embodiments of the present application. A general purpose processor may be a microprocessor or any conventional processor or the like. The processor reads the computer instructions in the memory, and when the processor executes the computer instructions, the corresponding processes in the various methods of the embodiments of the present application are implemented. For the sake of brevity, details are not repeated here.

The technical solution of the present application also provides a storage medium, which is one of computer-readable storage media, where the computer-readable storage medium stores computer instructions, and the computer instructions are used to cause a computer to execute the virtual machine management method.

It should be noted that the above computer instructions can be executed by a processor to complete the steps in the foregoing method. The computer-readable storage medium may be memory such as FRAM, ROM, PROM, EPROM, EEPROM, Flash Memory, magnetic surface memory, optical disk, or CD-ROM.

To sum up, the present application provides a virtual machine management method, system, electronic equipment, and storage medium; by creating a first pseudo-terminal and a second pseudo-terminal, the virtual machine can output serial port logs to the first pseudo-terminal, and the first The pseudo-terminal outputs the serial port log to the second pseudo-terminal, so as to complete the reading and storage of the serial port log by the second pseudo-terminal according to the log input status of the second pseudo-terminal monitored by the virtual machine monitor. Through the obtained serial port log, this application can solve the problem in time according to the serial port log when a problem occurs in the virtual machine, so as to save the problem location time, improve the problem location efficiency, and ensure the project delivery can be guaranteed.

Although example embodiments have been described herein with reference to the accompanying drawings, it should be understood that the above-described example embodiments are exemplary only, and are not intended to limit the scope of the application thereto. Various changes and modifications can be made therein by those of ordinary skill in the art without departing from the scope and spirit of the application. All such changes and modifications are intended to be included within the scope of this application as claimed in the appended claims.

Those skilled in the art can appreciate that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present application.

In the several embodiments provided in this application, it should be understood that the disclosed devices and methods may be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or May be integrated into another device, or some features may be omitted, or not implemented.

The various component embodiments of the present application may be realized in hardware, or in software modules running on one or more processors, or in a combination thereof. Those skilled in the art should understand that a microprocessor or a digital signal processor (DSP) may be used in practice to implement some or all functions of some modules according to the embodiments of the present application. The present application can also be implemented as an apparatus program (for example, a computer program and a computer program product) for performing a part or all of the methods described herein. Such a program implementing the present application may be stored on a computer-readable medium, or may be in the form of one or more signals. Such a signal may be downloaded from an Internet site, or provided on a carrier signal, or provided in any other form.

It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is a relationship between these entities or operations. There is no such actual relationship or order between them. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements of or also include elements inherent in such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article or apparatus comprising said element.

Although the description of the present application is made in conjunction with the above specific embodiments, it is obvious that those skilled in the art can make many substitutions, modifications and changes based on the above contents. Accordingly, all such alternatives, modifications and changes are intended to be included within the spirit and scope of the appended claims.

Claims (10)

1. A method for virtual machine management, comprising the steps of:

s10: starting the virtual machine after the virtual machine monitor finishes starting;

s20: the virtual machine automatically outputs a serial port log to a first pseudo terminal, and the first pseudo terminal outputs the serial port log to a second pseudo terminal;

s30: and when the second pseudo terminal receives the serial port log, the virtual machine monitor reads and stores the serial port log.

2. The virtual machine management method according to claim 1, wherein the step S10 further comprises: creating a first pseudo terminal and a second pseudo terminal through the virtual machine monitor, and starting and operating a virtual machine on the first pseudo terminal; the first pseudo terminal and the second pseudo terminal are a pair of virtual character devices providing a bi-directional communication channel; the first pseudo terminal provides an interface, and any content written in the second pseudo terminal is transmitted to a first application program for opening the first pseudo terminal; any content written to the first pseudo terminal may also be read by a second application connected to the second pseudo terminal.

3. The virtual machine management method according to claim 2, wherein the step S20 further comprises: the virtual machine monitor monitors the log input state of the second pseudo terminal through the second application program; the log entry state includes a first state and a second state.

4. The virtual machine management method according to claim 3, wherein when the log input state is a first state, it is determined that the serial port log has been received by a current second pseudo terminal, and the virtual machine monitor reads and stores the serial port log through the second application program.

5. The method according to claim 4, wherein when the log input state is the second state, it is determined that the serial port log is not received by the current second pseudo terminal, and the virtual machine monitor continues to monitor the log input state of the second pseudo terminal.

6. A system employing the virtual machine management method of any one of claims 1-5, the system comprising:

and a starting module: the virtual machine monitor is used for starting the virtual machine after the virtual machine monitor is started;

a first output module: the virtual machine is used for automatically outputting a serial port log to the first pseudo terminal;

and a second output module: the serial port log is used for outputting the serial port log to a second pseudo terminal by the first pseudo terminal;

and a reading module: and the virtual machine monitor is used for reading the serial port log through a second application program and storing the serial port log when the second pseudo terminal receives the serial port log.

7. The system of claim 6, wherein the system further comprises:

the creation module: for creating the first and second pseudo terminals by the virtual machine monitor.

8. The system of claim 7, wherein the system further comprises:

monitoring module: the virtual machine monitor monitors the log input state of the second pseudo terminal through the second application program; the log entry state includes a first state and a second state;

when the log input state is the first state, transferring to the reading module;

and when the log input state is the second state, the virtual machine monitor continues to monitor the log input state of the second pseudo terminal through the second application program.

9. An electronic device, comprising: a memory and a processor, the memory and the processor being communicatively coupled to each other, the memory having stored therein computer instructions, the processor executing the computer instructions to perform the virtual machine management method of any of claims 1-5.

10. A storage medium, one of computer-readable storage media, wherein the computer-readable storage medium stores computer instructions for causing a computer to perform the virtual machine management method of any one of claims 1-5.