WO2017185954A1

WO2017185954A1 - Method, host, and system for implementing usb device management

Info

Publication number: WO2017185954A1
Application number: PCT/CN2017/079456
Authority: WO
Inventors: 邱剑锋
Original assignee: 中兴通讯股份有限公司
Priority date: 2016-04-28
Filing date: 2017-04-05
Publication date: 2017-11-02
Also published as: CN107341039A

Abstract

A method, host, and system for implementing USB device management. The method comprises: acquiring device information of a USB device on a terminal via a communication link established with the terminal (S101); acquiring virtual machine information on a host (S102); determining management information with respect to the USB device on the basis of the device information and of the virtual machine information (S103); and managing the USB device on the basis of the management information (S104). The method simplifies the complexity of USB device management and reduces the length of time spent on USB device management.

Description

Method, host and system for implementing USB device management

Technical field

This document relates to, but is not limited to, the field of computer technology, and in particular, to a method, a host and a system for implementing USB device management.

Background technique

Virtual machine technology was proposed in the 1960s and 1970s. It is a simulation simulation of hardware devices. The proposal of virtual machine technology provides more implementation methods for users to share resources and access each other between different terminals.

In a virtual environment, the virtual machine used by the user is running on the host in the remote room. For a physical machine, a universal serial bus flash drive (USB flash drive, referred to as a USB flash drive) can be directly inserted into a slot on a physical machine, and the physical machine system can directly access the USB flash drive. However, for a virtual machine, it is only a software program, and does not have a physical interface. In the related technology, in order to ensure that the user can perform operations such as reading and writing to the USB disk in the virtual machine, the USB redirection technology is required to insert the user. The U disk on the terminal is redirected to the virtual machine, so that the user can directly read and write the file on the U disk on the virtual machine. The main problems of this technology are: complicated steps, cumbersome command execution, error-prone, and when a virtual machine is required to read and write to multiple remote USB devices, a pair of each USB device is required to be cumbersome. USB redirection, which greatly increases the management time and management complexity of USB devices in a virtual environment.

In summary, in a virtual environment, USB device management is time consuming and complicated.

Summary of invention

The following is an overview of the topics detailed in this document. This Summary is not intended to limit the scope of the claims.

The embodiments of the present invention provide a method, a host, and a system for implementing USB device management, which can simplify the process of managing a USB disk.

An embodiment of the present invention provides a method for implementing USB device management, including:

Obtaining device information of the USB device on the terminal by using a communication link established with the terminal;

Obtain virtual machine information on the host;

Determining management information for the USB device according to the device information and the virtual machine information;

The USB device is managed according to the management information.

Optionally, the management information includes a mounting indication and an uninstallation indication;

When the management information is the mount indication, managing the USB device according to the management information includes: writing the device information into the configuration file of the virtual machine according to the mount indication, so that the virtual machine simulates the device according to the device information in the configuration file. a virtual USB device; a USB device is mounted on a virtual machine;

When the management information is the uninstallation indication, managing the USB device according to the management information includes: deleting the device information from the configuration file of the virtual machine according to the uninstallation instruction, or deleting the virtual USB device simulated according to the device information from the virtual machine.

Optionally, the management information further includes: deleting the indication; managing the USB device according to the management information, including: determining, according to the deletion indication, whether the USB device is mounted on the virtual machine, if it is determined that the USB device is mounted to the virtual device On the machine, the USB device is uninstalled from the virtual machine.

Optionally, the method further includes: determining, when the USB device on the virtual machine is abnormal, the USB device that is removed from the terminal according to the device information of the USB device on the virtual machine and the device information of the USB device on the terminal, Unmount the removed USB device from the virtual machine.

Optionally, the device information includes a USB device name uniformly generated by the terminal.

Optionally, the USB device name is uniformly generated by the USB server on the terminal, and is forwarded by the USB server to the USB client through a communication link established with the USB client of the host.

Optionally, the device information includes: identifier information configured to uniquely identify the USB device.

Optionally, the identification information includes: a manufacturer, a product number, a bus, a port, and an agreement (IP) for interconnection between the source networks.

Optionally, determining, according to the device information and the virtual machine information, the management information of the USB device includes: receiving management information determined by the external virtualization center according to the device information and the virtual machine information.

The embodiment of the invention further provides a host for implementing USB device management, comprising: a first obtaining module, a second acquiring module, a determining module and a management module;

The first obtaining module is configured to: acquire device information of the USB device on the terminal by using a communication link established with the terminal;

The second obtaining module is configured to: obtain virtual machine information on the host;

The determining module is configured to: determine management information of the USB device according to the device information and the virtual machine information;

The management module is set to: manage the USB device according to the management information.

Optionally, the management information includes a mounting indication or an uninstallation indication; the management module includes a mounting unit and an unloading unit;

The mount unit is configured to: according to the mount indication, write the device information into the configuration file of the virtual machine, so that the virtual machine simulates the virtual USB device according to the device information in the configuration file; a USB device is mounted on a virtual machine. on;

The uninstallation unit is configured to: delete the device information from the configuration file of the virtual machine according to the uninstallation instruction, or delete the virtual USB device simulated according to the device information from the virtual machine.

Optionally, the management information further includes a deletion indication. The management module further includes a deleting unit, configured to determine, according to the deletion indication, whether the USB device is mounted on the virtual machine, if it is determined that the USB device is mounted to the virtual machine. On, the USB device is uninstalled from the virtual machine.

Optionally, the exception processing module is further configured to: when the USB device on the virtual machine is abnormal, determine the USB removed from the terminal according to the device information of the USB device on the virtual machine and the device information of the USB device on the terminal. Device, uninstalls the unplugged USB device from the virtual machine.

Optionally, the device information acquired by the first acquiring module includes a USB device name uniformly generated by the terminal.

Optionally, the device information acquired by the first acquiring module includes: identifier information configured to uniquely identify the USB device.

Optionally, the identifier information obtained by the first obtaining module includes: a manufacturer, a product number, a bus, a port, and a source IP.

Optionally, the determining module includes a receiving unit configured to receive management information determined by the external virtualization center according to the device information and the virtual machine information.

The present invention also provides a system for implementing USB device management, including a virtualization center and a host;

The virtualization center is configured to: obtain the virtual machine information on the host, obtain the device information of the USB device on the terminal, and determine the management information of the USB device according to the device information and the virtual machine information, and send the management information to the host;

The host is configured to: obtain the device information of the USB device on the terminal through the communication link established with the terminal, and forward the device information to the virtualization center, receive the management information sent by the virtualization center, and manage the USB device according to the management information.

Compared with the related art, the technical solution provided by the embodiment of the present invention includes: acquiring device information of a USB device on a terminal by using a communication link established with the terminal; acquiring virtual machine information on the host; and obtaining device information and virtual machine information according to the device information Determine management information for the USB device; manage the USB device according to the management information. The embodiment of the invention simplifies the complexity of USB device management and saves the management time of the USB device.

Other aspects will be apparent upon reading and understanding the drawings and detailed description.

BRIEF abstract

1 is a flowchart of a method for implementing USB device management according to Embodiment 1 of the present invention;

2 is a schematic diagram of a module of a host for implementing USB device management according to Embodiment 2 of the present invention;

3 is a schematic structural diagram of a system for implementing USB device management according to Embodiment 3 of the present invention;

4 is a flowchart of a method for acquiring device information of a USB device by using the system in Embodiment 3 of the present invention;

5 is a flowchart of a method for mounting a USB device by using a dynamic mounting method in a system according to Embodiment 3 of the present invention;

6 is a flowchart of a method for uninstalling a USB device by using a dynamic uninstall method in the third embodiment of the present invention;

FIG. 7 is a flowchart of a method for deleting a USB device by using the system in Embodiment 3 of the present invention.

Detailed

Embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be noted that, in the case of no conflict, the features in the embodiments and the embodiments in the present application may be arbitrarily combined with each other.

Embodiment 1:

The embodiment provides a method for implementing USB device management, and the USB redirection technology is used to direct the USB device to the virtual machine for operation, which simplifies the management steps and improves the management efficiency. The method in this embodiment is particularly applicable to The USB device of the remote terminal is managed. The method is shown in Figure 1, and includes:

Step (S) 101: Obtain device information of the USB device on the terminal by using a communication link established with the terminal;

S102. Obtain virtual machine information on the host.

S103. Determine management information about the USB device according to the device information and the virtual machine information.

S104. Manage the USB device according to the management information.

The terminal in this embodiment may include a terminal such as a computer, a mobile phone, or a tablet computer. When the terminal is a mobile phone or a tablet computer, there is generally no universal USB device interface. In order to implement USB device insertion and removal, an interface conversion line may be utilized. Tools such as USB devices can be connected to your phone or tablet.

In S101, the method for obtaining the device information of the USB device on the terminal is different. Optionally, the query command is sent to the terminal through the communication link, and the terminal is instructed to report the device information of the USB device, and the receiving terminal sends the information through the communication link. The device information of the USB device that is periodically reported by the receiving terminal itself. The number of USB devices on the terminal may be multiple. Correspondingly, the acquired device information may be multiple. In S102, obtaining virtual machine information on the host may determine which virtual machines are available. It can be understood that multiple virtual machines can be run simultaneously on the host, that is, the obtained virtual machine information may be multiple.

In the embodiment, in this embodiment, the management information of the USB device can be understood as information indicating that the management of the USB device is completed by the virtual machine, and there are many specific management types, such as mounting, uninstalling, deleting, and the like. The management information of the USB device can be determined according to the device information and the virtual machine information. The determination includes at least two meanings. One is to determine a virtual machine from at least one virtual machine as a virtual machine for managing the USB device, and from the plurality of USB devices. One of the device information The USB device acts as a managed USB device; the second is to determine the specific type of management, such as mounting, uninstalling, deleting, and the like. It can be understood that the process of determining the management information may be completed on the host, and the virtual machine on the host is controlled according to the management information to complete management of the USB device, or may be received externally sent management information, according to the management information. Virtual machine management of USB devices.

Optionally, the management information in S103 and S104 includes a mount indication and an uninstall indication, respectively configured to indicate that the USB device to be mounted is mounted on the virtual machine and the USB device is instructed to be unmounted from the mounted virtual machine. .

When the management information is the mount indication, the S104 may be, according to the mount indication, the device information is written into the configuration file of the virtual machine, so that the virtual machine simulates the virtual USB device according to the device information in the configuration file.

In this embodiment, a USB device can only be mounted to a virtual machine. In order to avoid the USB device being repeatedly mounted by the virtual machine, the USB device can be mounted and unloaded (ie, not mounted). Separately displayed to the user, the simpler way is to display the unmounted and mounted USB devices in two columns on the page that manages the device information of the USB device. One column is unmounted and one column is hung. Loaded. Optionally, on the page for managing device information of the USB device, different status flag bits are set for the unmounted and mounted USB devices to identify the mounting and unloading status of the USB device, for example, set to 1. Indicates that it is mounted. If it is set to 0, it is not mounted. When the USB device is mounted on the virtual machine, its corresponding status flag changes from 0 to 1, indicating that it is mounted.

In addition, the present embodiment can also display the mounted and unmounted status of the USB device to the user in other feasible manners.

Optionally, in the embodiment, the mounting may select two mounting modes, static mounting and dynamic mounting. The static mounting includes: writing the device information of the USB device to the virtual state when the virtual machine is in the shutdown state. In the configuration file of the machine, when the virtual machine is powered on, the virtual USB device can be directly simulated by using the device information in the configuration file to complete the mounting of the USB device; and the dynamic mounting includes: when the virtual machine is powered on, Write the device information to the configuration file of the virtual machine, and then invoke the dynamic mount command to control the virtual machine to simulate the virtual USB device according to the device information in the configuration file. It can be understood that, when the device is mounted, the device information used is the device information of the USB device corresponding to the mounting indication.

When the management information is a mount indication, the S104 may include: deleting the device information from the configuration file of the virtual machine according to the uninstallation instruction, or deleting the virtual USB device simulated according to the device information from the virtual machine. Correspondingly, when the USB device is unloaded from the virtual machine, a clear operation is performed on its status flag.

Corresponding to the two ways of mounting, the uninstallation of this embodiment is also divided into static unloading and dynamic unloading. The static uninstallation includes: deleting the device information of the USB device from the configuration file of the virtual machine in the state of the virtual machine; the dynamic uninstalling includes: in the power-on state of the virtual machine, calling the dynamic uninstall command, and deleting the USB device according to the virtual machine Device information is simulated by virtual USB. It can be understood that when the USB device is uninstalled, the USB device that is uninstalled is a USB device corresponding to the uninstall indication.

In this embodiment, libvirt (libvirt is a set of existing, free, open source C language library supporting the mainstream virtualization tool under Linux) dynamic mount command and dynamic uninstall command provided by the function library can be called to complete the dynamic hung. Load and static mount process.

After the USB device is mounted on the virtual machine, the user can read and write the USB device mounted on the virtual machine on the host to read and write the USB device on the terminal. When there is no need to read or write the USB of the terminal on the virtual machine, the USB device on the virtual machine has no meaning and needs to be deleted. Optionally, in S103, according to the device information and the virtual machine information. The determined management information for the USB device further includes a deletion indication. It can be understood that, according to the deletion indication, the USB device to be deleted and the virtual machine in which it is located can be determined. When the management information is the deletion indication, S104 is specifically determining, according to the deletion indication, whether the USB device is mounted on the virtual machine, and if it is determined that the USB device is mounted on the virtual machine, uninstalling the virtual device from the virtual machine. USB device.

In this embodiment, the management information in S103 may include: the host determines the external information according to the device information and the virtual machine information, and may specifically include: receiving the external virtualization center according to the device information and the virtual Management information determined by machine information. In this solution, the virtualization center obtains device information and obtains virtual machine information. It can be understood that the virtualization center can obtain multiple virtual machine information, and control the virtual machine to complete management of the USB device by determining the management information and sending it to the host for execution, such as uninstalling, mounting, deleting, etc. Wait. When the management information is generated by the virtualization center, the embodiment must have a step of the virtualization center sending management information such as an uninstall indication, a mount indication, and a deletion indication to the host.

It can be understood that if the USB device on the terminal is unplugged, the virtual machine will not know. When the unplugging behavior occurs before the virtual machine is started, and the device information of the extracted USB device is written in the configuration file in the virtual machine, the startup of the virtual machine may be affected or even the virtual machine cannot be started; if the extraction behavior is In the process of using a virtual machine, and the unplugged USB device is already mounted on the virtual machine, when the user reads and writes the USB device on the virtual machine, there will be problems of read/write errors or read/write failures. Will bring a very poor experience to users. In order to avoid the above problems caused by the USB device being removed from the terminal, optionally, when the USB device on the virtual machine is abnormal, it is determined according to the device information of the USB device on the virtual machine and the device information of the USB device on the terminal. The USB device that was removed from the terminal unloads the removed USB device from the virtual machine. In this embodiment, in order to avoid the bad experience brought by the abnormal situation to the user, the device information of the USB device on the terminal may be periodically obtained, and compared with the device information of the USB device on the virtual machine, to determine that the terminal is removed. USB device, then unmount the removed device from the virtual machine.

For USB devices, the USB device of different manufacturers has a VENDOR ID (producer) that is inconsistent with the PRODUCT ID (product number). These two values can be used to distinguish USB devices of different manufacturers plugged into the same terminal. However, for the same batch of USB devices of the same manufacturer, VENDOR is consistent with PRODUCT. If two USB devices of the same batch are inserted in the terminal, it is more troublesome to distinguish. The device information of the USB device acquired in the S101 includes the identifier information configured to uniquely identify the USB device, in order to solve the problem of the conflict between the USB device and the device.

It can be understood that if the device information includes not only the VENDOR ID (manufacturer) and the PRODUCT ID (product number) of the USB device, but also the slot location of the USB device, for example, remote_usb_192.168.1.10_1_0, where 1 is the BUS. Value, 0 is the value of PORT, the same batch of USB devices of the same manufacturer can be distinguished, so optional, the identification information of this embodiment includes the manufacturer, the product number, the bus, the port, and the source network. Interconnected Protocol (IP). The manufacturer and product number are the identifiers that come with the USB device shipped from the factory. The port and bus can characterize which slot of the USB device the USB device is in. The source IP can be used to determine the terminal plugged into the USB device. This information is sufficient to uniquely identify any USB device.

In the related art, when the USB device points to the host where the virtual machine is running, the USB is mounted. The virtual machine can only be started on this host, but cannot be started across the host. The reason for this problem is that the name of the USB device obtained on the host is programmed by the USB client on the host, which leads to each host. The names of the same USB devices acquired may be inconsistent, causing the virtual machine to mount the wrong USB device when booting across the host. For this problem, optionally, the device information acquired in S101 includes a USB device name uniformly generated by the terminal. Optionally, the USB device name may be uniformly generated by the USB server on the terminal, and forwarded by the USB server to the USB client through a communication link established with the USB client of the host. Thus, the name of the same USB device acquired by each host is the same. In this way, the problem that the virtual machine on which the USB device is mounted cannot cross the host is solved.

With the method for implementing USB device management in this embodiment, the device information of the USB device on the terminal can be obtained through the communication link established with the terminal; the virtual machine information on the host is obtained; and the USB device is determined according to the device information and the virtual machine information. Management information; management of USB devices based on management information. The method of the embodiment determines the management information of the USB device by acquiring the device information of the USB device of the terminal and the obtained virtual machine information of the host, and completes management of the USB device by the virtual machine, that is, acquiring device information and virtual The machine information can complete the management of the USB device by the virtual machine according to the method. Therefore, the method of the embodiment can implement the management of the USB device by the virtual machine without complicated operation instructions, and has the advantages of simple, effective, and easy to implement management.

Optionally, the device information of the embodiment includes the identifier information that is uniquely identified by the USB device, which can help solve the conflict problem caused by the same batch information of the USB device, and is beneficial to avoid repeated mounting of the USB device. appear.

Optionally, the device name of the USB device in this embodiment is uniformly generated by the terminal, and the problem that the virtual machine cannot be started across the host due to the host device arranging the USB device name may be solved.

Optionally, the embodiment can process the abnormal situation of the USB device on the virtual machine, and can solve the problem that the virtual device fails to be booted when the USB device is removed from the terminal.

The embodiment of the invention further provides a computer storage medium, wherein the computer storage medium stores computer executable instructions, and the computer executable instructions are used to execute the foregoing method for implementing USB device management.

The embodiment of the invention further provides a host for managing a USB device, comprising: a memory and a processor; wherein

A processor is configured to execute program instructions in the memory;

Program instructions perform the following operations on the processor read:

Obtain virtual machine information on the host;

The USB device is managed according to the management information.

Embodiment 2:

This embodiment provides a host for implementing USB device management. Referring to FIG. 2, the host 2 of the present embodiment includes a first obtaining module 21, a second obtaining module 22, a determining module 23, and a management module 24. The first acquiring module 21 is configured. The device information of the USB device on the terminal is obtained through the communication link established with the terminal; the second obtaining module 22 is configured to: obtain the virtual machine information on the host; and the determining module 23 determines the USB device according to the device information and the virtual machine information. Management information; the management module 24 is configured to: manage the USB device according to the management information.

The terminal in this embodiment may include: a terminal such as a computer, a mobile phone, or a tablet computer. When the terminal is a mobile phone or a tablet computer, there is generally no universal USB device interface. In order to implement USB device insertion and removal, an interface conversion line may be utilized. Tools such as USB devices can be connected to a phone or tablet.

In this embodiment, the first obtaining module 21 obtains the device information of the USB device on the terminal, and optionally sends an inquiry command to the terminal through the communication link, and instructs the terminal to report the device information of the USB device. Receiving device information sent by the terminal through the communication link; and further comprising: receiving device information of the USB device periodically reported by the terminal itself. The number of USB devices on the terminal may be multiple. Correspondingly, the acquired device information may be multiple. The virtual machine information obtained by the second obtaining module 22 can be used to determine which virtual machines are available. It can be understood that multiple virtual machines can be simultaneously run on the host, that is, the virtual machine information acquired by the second obtaining module 22 can be obtained. There are multiple.

Optionally, the management information acquired by the first obtaining module 21 of the embodiment includes a mounting indication or an uninstalling instruction; the management module 24 includes a mounting unit 241 and an unloading unit 242; and the mounting unit 241 is configured to, according to the mounting indication, The device information is written into the configuration file of the virtual machine, so that the virtual machine can simulate the virtual USB device according to the device information in the configuration file; one USB device can only be mounted on one virtual machine at the same time.

Optionally, in the embodiment, the mounting manner of the mounting unit 241 includes: static mounting and dynamic mounting. The static mounting includes: the mounting unit 241 sets the device information of the USB device when the virtual machine is in the shutdown state. Write to the configuration file of the virtual machine, so that when the virtual machine is powered on, the virtual USB device can be directly simulated by using the device information in the configuration file to complete the mounting of the USB device; and the dynamic mounting includes: the mounting unit When the virtual machine is powered on, the device information is written into the configuration file of the virtual machine, and then the dynamic mount command is invoked to control the virtual machine to simulate the virtual USB device according to the device information in the configuration file. It can be understood that, when the device is mounted, the device information used is the device information of the USB device corresponding to the mounting indication.

The unloading unit 242 is configured to: delete the device information from the configuration file of the virtual machine according to the uninstallation instruction, or delete the virtual USB device simulated according to the device information from the virtual machine.

The unloading manner of the unloading unit 242 of this embodiment also includes static unloading and dynamic unloading, corresponding to the two methods of mounting. The static uninstallation includes: the unloading unit 242 deletes the device information of the USB device from the configuration file of the virtual machine in the virtual machine state; the dynamic uninstallation includes: the unloading unit 242 invokes the dynamic uninstall command in the virtual state of the virtual machine, from the virtual The virtual USB simulated according to the device information of the USB device is deleted in the machine. It can be understood that when the USB device is uninstalled, the USB device that is uninstalled is a USB device corresponding to the uninstall indication.

In this embodiment, the mount unit 241 and the unload unit 242 can invoke the dynamic mount command and the dynamic unload command provided by the libvirt function library to complete the process of dynamic mount and static mount.

After the USB device is mounted on the virtual machine, the user can read and write the USB device mounted on the virtual machine on the host to read and write the USB device on the terminal. When there is no need to read and write the USB of the terminal on the virtual machine, the USB device on the virtual machine has no meaning and needs to be deleted. Optionally, the management information of the embodiment further includes a deletion indication, and the management module 24 further includes a deleting unit 243, configured to determine the USB setting according to the deletion indication. Whether the device is mounted on the virtual machine. If it is determined that the USB device is mounted on the virtual machine, the USB device is uninstalled from the virtual machine.

It can be understood that if the USB device on the terminal is unplugged, the virtual machine is not known. When the unplugging behavior occurs before the virtual machine is started, and the device information of the extracted USB device is written in the configuration file in the virtual machine, the startup of the virtual machine may be affected or even the virtual machine cannot be started; if the extraction behavior is In the process of using a virtual machine, and the unplugged USB device is already mounted on the virtual machine, when the user reads and writes the USB device on the virtual machine, there will be problems of read/write errors or read/write failures. Will bring a very poor experience to users. In order to avoid the above problems caused by the USB device being removed from the terminal, the host 2 of the embodiment further includes an exception processing module 25 configured to be based on the USB on the virtual machine when the USB device on the virtual machine is abnormal. The device information of the device and the device information of the USB device on the terminal determine the USB device that is removed from the terminal, and uninstall the extracted USB device from the virtual machine.

In this embodiment, the determining module 23 may include a receiving unit 231 configured to receive management information determined by the external virtualization center according to the device information and the virtual machine information. When the management information is received by the receiving unit 231, a scheme in which the virtualization center acquires device information and acquires virtual machine information is implied. It can be understood that the virtualization center can obtain multiple virtual machine information, and by sending the management information to the receiving unit 231, the management module 24 controls the virtual machine to complete management of the USB device according to the management information, as described above. Uninstall, mount, delete, etc. management. Correspondingly, when the management information is generated by the virtualization center, the embodiment must have a step of the virtualization center sending management information such as an uninstallation instruction, a mount indication, and a deletion indication to the host.

For USB devices, the USB device of different manufacturers has a VENDOR ID (producer) that is inconsistent with the PRODUCT ID (product number). These two values can be used to distinguish USB devices of different manufacturers plugged into the same terminal. However, for the same batch of USB devices of the same manufacturer, VENDOR is consistent with PRODUCT. If two USB devices of the same batch are plugged into the terminal, it is troublesome for the host to obtain the virtualization center. In order to solve the same batch USB device feature information, it leads to conflicts. Optionally, the device information of the USB device acquired by the first obtaining module 21 includes identifier information configured to uniquely identify the USB device.

It can be understood that if the device information includes not only the VENDOR ID (manufacturer) and the PRODUCT ID (product number) of the USB device, but also the slot position of the USB device. For example, remote_usb_192.168.1.10_1_0, where 1 is the value of BUS and 0 is the value of PORT, the same batch of USB devices of the same manufacturer can be distinguished, so that the identification information of this embodiment includes the manufacturer. , product number, bus, port, source IP. The manufacturer and product number are the identifiers that come with the USB device shipped from the factory. The port and bus can characterize which slot of the USB device the USB device is in. The source IP can be used to determine the terminal plugged into the USB device. This information is sufficient to uniquely identify any USB device.

In the related art, when the USB device points to the host where the virtual machine is running, the virtual machine on which the USB is mounted can only be started on this host, and cannot be started across the host. The reason for this problem is that the host is on the host. The name of the obtained USB device is self-programmed by the USB client on the host, which causes the name of the same USB device acquired by each host to be inconsistent, resulting in the virtual machine mounting the wrong USB device when starting across the host. For this problem, optionally, the device information acquired by the first obtaining module 21 includes a USB device name uniformly generated by the terminal. Optionally, the USB device name may be uniformly generated by the USB server on the terminal, and forwarded by the USB server to the USB client through a communication link established with the USB client of the host. Thus, the names of the same USB devices acquired by all hosts are the same. In this way, the problem that the virtual machine on which the USB device is mounted cannot cross the host is solved.

With the host that implements USB device management in this embodiment, the first acquiring module is configured to obtain device information of the USB device on the terminal by using a communication link established with the terminal; and the second acquiring module is configured to obtain virtual machine information on the host; The determining module is configured to determine management information for the USB device according to the device information and the virtual machine information; the management module is configured to manage the USB device according to the management information. The host of the embodiment obtains the device information and the virtual machine information by using the first and second acquiring modules respectively, and determines the management information for managing the USB device by using the determining module, and the management module completes the management of the USB device by the virtual machine according to the management information pair. The management of the USB device is performed based on the acquired device information and the virtual machine information, and the management method is simple and effective, and does not need to execute cumbersome instructions, and is not prone to errors. Optionally, the abnormality caused by the USB device being removed from the terminal may be exhausted, and the management effect of the USB device on the virtual machine by the host in this embodiment may be improved, and the user experience is improved.

Embodiment 3:

Referring to FIG. 3, this embodiment provides a system for implementing USB device management, including virtualization. The core 31 and the host 32; the virtualization center 31 is configured to: obtain virtual machine information on the host, obtain device information of the USB device on the terminal through the host, and determine management information of the USB device according to the device information and the virtual machine information, The management information is sent to the host; the host 32 is configured to: obtain the device information of the USB device on the terminal through the communication link established with the terminal 33, receive the management information, and manage the USB device according to the management information.

In this embodiment, the virtualization center can implement centralized management of the entire virtualized resource, including host information, virtual machine information, and the like. In this embodiment, the virtualization center may obtain device information of the USB device on the terminal and virtual machine information on the host, and the two pieces of information are managed by the virtual machine to the USB device.

The management information sent by the virtual machine in this embodiment may include a mount indication, an uninstall indication, and a delete indication, respectively configured to control the virtual machine to mount the USB device, uninstall the USB device from the virtual machine, and delete the USB device from the virtual machine.

The host 32 of the embodiment may include a host proxy module 321 , which may implement the functions of the first and second acquisition modules, the determination module, and the management module on the host in the second embodiment.

The communication between the host and the terminal can be implemented by setting the USB client 323 on the host, and setting the USB server 331 on the terminal 33. The USB client 323 and the USB server 331 can establish a communication link to implement communication.

Referring to FIG. 4, the virtualization center obtains the device information of the USB device on the terminal by using the host, and the information may include:

S401. The virtualization center initiates a USB query request to the host proxy module, and indicates the IP of the terminal.

S402. The host proxy module receives the USB query request and forwards the request to the USB client on the host.

S403. The USB client establishes a TCP communication link with the USB server on the designated terminal, and forwards the USB query request to the USB server on the terminal through the communication link.

S404: The USB server on the terminal executes the USB query information, reads the USB device list on the terminal, and returns the USB device list to the US client on the host through the communication link;

S405. The USB client on the host returns a list of USB devices to the host agent module.

S406. The host proxy module converts the returned USB device list into an internal response and sends the list to the virtualization center.

S407. The virtualization center receives the internal response, saves it to the database, and displays it on the USB management page.

After the virtualization center obtains the device information of the USB device, it can store it in the database. In order to facilitate the user to view and operate the USB device information, the virtualization center can also be used to display the USB device information on its USB management page. The virtualization center may determine the mount indication according to the USB device to be mounted selected by the user and the virtual machine on which the USB device is mounted, send the mount indication to the host proxy module, and write the device information to the virtual machine through the host proxy module. In the file, the virtual machine simulates the virtual USB device according to the device information in the configuration file.

Optionally, the virtualization center can mount the USB device to the virtual machine in two ways: static mount and dynamic mount. Statically mount: The virtualized center writes the device information of the USB device to be mounted to the configuration file of the virtual machine in the state of the virtual machine. This facilitates the virtual machine to simulate virtual USB based on the device information in the configuration file. device.

Dynamically mount: In the virtual machine, the virtualized center writes the device information of the USB device to be mounted to the configuration file of the virtual machine, and sends a mount indication to the host proxy module, so that it can be called according to the mount indication. The dynamic mount command controls the virtual machine to simulate a virtual USB device based on the device information in the configuration file.

In order to facilitate the user to know the information such as the correspondence between the virtual machine and the mounted USB device, the virtualization center of the embodiment may also display the virtual machine and the USB device corresponding to the virtual machine on the USB device management page. Shows the terminal where these USB devices are located, as well as the model and size of the USB device. It is convenient for users to know the status, correspondence, and other information of the virtual machine and USB device when viewing the USB device management page, and then according to their own needs. Manage different USB devices.

The state of the virtual machine of this embodiment may include a state of a physical machine such as power on, power off, standby, and the like. Optionally, the virtualization center of the embodiment controls the uninstallation of the USB device by the virtual machine, including: in the virtual machine state, the device information of the USB device to be uninstalled is configured from the configuration file of the virtual machine. Delete the device; or send a dynamic uninstallation indication to the host agent module when the virtual machine is powered on, so that it can invoke the dynamic uninstall command according to the dynamic uninstallation instruction, and delete the virtual USB device simulated on the virtual machine according to the device information in the configuration file.

In this embodiment, the dynamic mount command and the dynamic unload command invoked by the host proxy module can be implemented by using existing software. For example, the host proxy module can invoke the dynamic mount and dynamic uninstall commands provided by the libvirt function library. The following is an example of libvirt providing dynamic mount and dynamic unload commands, and an example of the detailed process of dynamic mount and dynamic unload.

Referring to FIG. 5, it is a flowchart of a method for mounting a USB device by using a dynamic mounting manner in the system of the embodiment. The dynamic mounting process includes:

S501. The virtualization center sends a mount indication to the host proxy module.

S502. The host agent module receives the mounting instruction, writes the device information of the USB device to be mounted into the configuration file of the corresponding virtual machine, invokes a mount command provided by libvirt, and simulates to be mounted in the virtual machine. USB device;

S503, libvirt returns the result of the command execution to the host agent;

S504. The host agent sends a command response to the virtualization center.

Referring to FIG. 6, which is a flowchart of a method for uninstalling a USB device by using a dynamic uninstall method in the system of the embodiment, the process of dynamic uninstallation is as follows;

S601. The virtualization center sends an uninstallation instruction to the host proxy module.

S602. The host agent module receives the uninstallation instruction, deletes the device information of the USB device to be uninstalled from the configuration file of the corresponding virtual machine, invokes an uninstall command provided by libvirt, and deletes the simulated USB device to be uninstalled in the virtual machine.

S603, libvirt returns the result of the command execution to the host proxy module;

S604. The host agent module sends a command response to the virtualization center.

When the user does not need to manage a USB device, in order to save resources, the USB device can be deleted from the corresponding virtual machine. Optionally, the virtualization center of the embodiment may send a deletion indication to the host proxy module, and the host proxy module determines, according to the indication, whether the USB device to be deleted is mounted on the virtual machine, and if it is mounted, the virtual machine is removed from the virtual machine. Uninstall, delete the corresponding device information stored in the virtualization center, and complete the complete deletion of the USB device. If not To mount, you only need to delete the device information stored in the virtualization center.

Referring to FIG. 7, which is a flowchart of a method for deleting a USB device by using the system of the embodiment, the specific process of deleting is as follows:

S701. The virtualization center acquires the USB device to be deleted selected by the user on the USB device management page.

S702, the virtualization center checks whether the USB device to be deleted is mounted, if it has been mounted to the virtual machine, proceeds to S703, otherwise proceeds to S704;

S703, sending a delete indication to the host proxy module, controlling the virtual machine to uninstall the USB device, and proceeding to S704;

S704. Delete device information of the USB device from the database of the virtualization center.

The virtual machine center of the embodiment is further configured to set the mounting identifier information for each USB device, and the mounting identifier information is configured to be used for the USB device, in order to ensure the user's understanding of the mounting and unloading status of the USB device. The mount status and the uninstall status are identified. For example, the virtualization center may set the mount identification information to a mount flag FLAG. If the USB device is mounted, the flag is 1; if not, the flag is cleared to 0; or The virtualization center is used to illuminate the icon or text information corresponding to the mounted USB device on the USB management page, and to extinguish the icon or text information of the unmounted or unmounted USB device. This allows you to react to the current state of the USB device in real time. Optionally, the mount identifier information set by the virtualization center may be displayed on the USB management page of the virtualization center to be displayed to the user, or may be displayed to the user in other manners.

In the process of actually managing the USB device, there is a time when the state of the simulated virtual USB device on the virtual machine does not match the state of the corresponding actual USB device. For example, when the USB device on the terminal is unplugged, the virtual machine cannot be started, or the virtual machine cannot read or write the USB device on the virtual machine. In order to solve these problems, optionally, the virtualization center of the embodiment may be used to process an abnormal condition of the USB device on the virtual machine. Therefore, the virtualization center of the embodiment may be used to periodically send a USB query request, obtain device information on the terminal, compare it with device information in the database, and determine the USB device that is removed from the terminal, from the corresponding virtual machine. Unmount the removed USB device and remove the removed USB device from the database The device information of the standby device can be compared with the device information in the configuration file of the virtual machine that cannot be started, and the device information on the terminal is determined, and the USB device that is removed from the terminal is deleted, and the configuration file of the virtual machine that cannot be started is deleted. Device Information.

For USB devices, the USB device of different manufacturers has a VENDOR ID (producer) that is inconsistent with the PRODUCT ID (product). These two values can be used to distinguish USB devices of different manufacturers plugged into the same terminal. However, for the same batch of USB devices of the same manufacturer, VENDOR is consistent with PRODUCT. If two USB devices of the same batch are inserted in the terminal, the virtualization center is more troublesome to distinguish. In order to solve the problem that the same batch of USB device feature information is consistent, causing a conflict, the device information acquired by the virtualization center of the embodiment includes the identifier information configured to uniquely identify the USB device. Specifically, the identification information may include a manufacturer, a product number, a bus, a port, and a source IP. The manufacturer and product number are the identifiers that come with the USB device shipped from the factory. The port and bus can characterize which slot of the USB device the USB device is in. The source IP can be used to determine the terminal plugged into the USB device. This information is sufficient to uniquely identify any USB device.

In the existing technology, after the USB device points to the host where the virtual machine is running, the virtual machine on which the USB is mounted can only be started on this host, and cannot be started across the host. The reason for this problem is that the host The name of the USB device obtained on the host is self-programmed by the host's USB client. This causes the name of the same USB device acquired by each host to be inconsistent, resulting in the virtual machine mounting the wrong USB device when booting across the host. For this problem, the solution may be that the device information acquired by the host includes the USB device name uniformly generated by the terminal. Optionally, the USB device name is generated by the USB server on the terminal, and the client on the host acquires the device name through the communication link for use by the host.

With the system for implementing USB device management in this embodiment, the virtualization center can obtain the virtual machine information on the host, obtain the device information of the USB device on the terminal through the host, and determine the management of the USB device according to the device information and the virtual machine information. The information is sent to the host by the management information. The host can obtain the device information of the USB device on the terminal through the communication link established with the terminal, receive the management information sent by the virtualization center, and manage the USB device according to the management information. The system of the embodiment has a simple structure. The interaction between the virtualization center and the host and the control of the virtual machine by the host according to the indication of the virtualization center can complete the USB setting on the virtual machine to the terminal on the host. In the management and management process, there is no need to execute complicated commands, no complicated steps, simple and effective management, and bring a good experience to users.

Obviously, those skilled in the art should understand that the above modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of 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, diskette, 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 individual integrated circuit modules, or a plurality of the modules or steps may be implemented as a single integrated circuit module. Therefore, the invention is not limited to any particular combination of hardware and software.

One of ordinary skill in the art will appreciate that all or a portion of the above steps may be performed by a program to instruct related hardware, such as a processor, which may be stored in a computer readable storage medium, such as a read only memory, disk or optical disk. Wait. Alternatively, all or part of the steps of the above embodiments may also be implemented using one or more integrated circuits. Correspondingly, each module/unit in the foregoing embodiment may be implemented in the form of hardware, for example, by implementing an integrated circuit to implement its corresponding function, or may be implemented in the form of a software function module, for example, being executed by a processor and stored in a memory. Programs/instructions to implement their respective functions. The invention is not limited to any specific form of combination of hardware and software.

The embodiments disclosed in the present application are as described above, but the descriptions are only for the purpose of understanding the present application, and are not intended to limit the present application, such as the specific implementation method in the embodiments of the present invention. Any modifications and changes in the form and details of the embodiments may be made by those skilled in the art without departing from the spirit and scope of the disclosure. The scope defined by the appended claims shall prevail.

Industrial applicability

The embodiment of the invention simplifies the complexity of USB device management and saves the management time of the USB device.

Claims

A method for implementing universal serial bus USB device management, comprising:

Obtaining device information of the USB device on the terminal by using a communication link established with the terminal;

Obtain virtual machine information on the host;

Determining management information for the USB device according to the device information and the virtual machine information;

The USB device is managed according to the management information.
The method of claim 1, wherein the management information comprises a mount indication and an uninstall indication;

When the management information is a mount indication, the managing the USB device according to the management information includes: writing the device information into a configuration file of the virtual machine according to the mount indication, The virtual machine is configured to simulate a virtual USB device according to device information in the configuration file; wherein a USB device is mounted on a virtual machine;

When the management information is an uninstallation indication, the managing the USB device according to the management information includes: deleting the device information from a configuration file of the virtual machine according to an uninstallation instruction, or according to the device information The simulated virtual USB device is deleted from the virtual machine.
The method of claim 1, wherein the management information further comprises a deletion indication; the managing the USB device according to the management information comprises: determining, according to the deletion indication, whether the USB device is hung Loading on the virtual machine, if it is determined that the USB device is mounted on the virtual machine, the USB device is uninstalled from the virtual machine.
The method of claim 1, further comprising: determining, when the USB device on the virtual machine is abnormal, based on device information of the USB device on the virtual machine and device information of the USB device on the terminal The detached USB device unloads the extracted USB device from the virtual machine.
The method according to any one of claims 1 to 4, wherein the device information comprises a USB device name uniformly generated by the terminal.
The method of claim 5 wherein said USB device name is on said terminal The USB server is uniformly generated and forwarded to the USB client by the USB server through a communication link established with the USB client of the host.
The method of any of claims 1-4, wherein the device information comprises: identification information configured to uniquely identify the USB device.
The method of claim 7, wherein the identification information comprises: a manufacturer, a product number, a bus, a port, a protocol IP interconnected between the source networks.
The method according to any one of claims 1 to 4, wherein the determining management information for the USB device according to the device information and the virtual machine information comprises: receiving an external virtualization center according to the device Information and management information determined by the virtual machine information.
A host for implementing USB device management includes: a first acquisition module, a second acquisition module, a determination module, and a management module;

The first acquiring module is configured to: acquire device information of the USB device on the terminal by using a communication link established with the terminal;

The second obtaining module is configured to: acquire virtual machine information on the host;

The determining module is configured to: determine management information about the USB device according to the device information and the virtual machine information;

The management module is configured to: complete management of the USB device by the virtual machine according to the management information.
The host of claim 10, wherein the management information comprises a mount indication or an uninstallation indication; the management module comprises a mount unit and an offload unit;

The mounting unit is configured to write the device information into a configuration file of the virtual machine according to the mounting indication, so that the virtual machine simulates virtual according to device information in the configuration file. USB device; a USB device is mounted on a virtual machine;

The unloading unit is configured to: delete the device information from a configuration file of the virtual machine according to the uninstall indication, or delete a virtual USB device simulated according to the device information from the virtual machine.
The host of claim 10, the management information further comprising a deletion indication;

The management module further includes a deleting unit, configured to determine, according to the deletion indication, whether the USB device is mounted on the virtual machine, and if it is determined that the USB device is mounted on the virtual machine, Unloading the USB device from the virtual machine.
The host of claim 10, the host further comprising an exception processing module configured to: according to the device information of the USB device on the virtual machine and the device information of the USB device on the terminal when the USB device on the virtual machine is abnormal Determining the USB device that is removed from the terminal, and unmounting the extracted USB device from the virtual machine.
The host device according to any one of claims 10 to 13, wherein the device information acquired by the first obtaining module includes a USB device name uniformly generated by the terminal.
The host of claim 14, wherein the USB device name is uniformly generated by a USB server on the terminal, and is forwarded by the USB server through a communication link established with a USB client of the host. Give the USB client.
The host device according to any one of claims 10 to 13, wherein the device information acquired by the first obtaining module comprises: identification information configured to uniquely identify the USB device.
The host of claim 16, wherein the identification information acquired by the first obtaining module comprises: a manufacturer, a product number, a bus, a port, and a source IP.
The host according to any one of claims 10 to 13, wherein the determining module comprises a receiving unit configured to receive management information determined by the external virtualization center based on the device information and the virtual machine information.
A system for implementing USB device management, including a virtualization center and a host;

The virtualization center is configured to: acquire virtual machine information on the host, acquire device information of the USB device on the terminal by using the host, and determine, according to the device information and the virtual machine information, the USB device. Management information, the management information is sent to the host;

The host is configured to: acquire device information of the USB device on the terminal by using a communication link established with the terminal, and forward the device information to the virtualization center, and receive the management information sent by the virtualization center, according to the Management information, completing management of the USB device by the virtual machine.