CN107526595B

CN107526595B - Method for supporting remote loading of multiple operating systems

Info

Publication number: CN107526595B
Application number: CN201710749958.4A
Authority: CN
Inventors: 张硕; 刘亚萍; 周谱德; 李少勇; 廖海宁
Original assignee: Central South University
Current assignee: Central South University
Priority date: 2017-08-28
Filing date: 2017-08-28
Publication date: 2020-06-09
Anticipated expiration: 2037-08-28
Also published as: CN107526595A

Abstract

A method for supporting remote loading of multiple operating systems aims to solve the problem of how to efficiently carry out remote loading of multiple operating systems by a client. The technical scheme includes that a rapid loading transmission protocol QLTP is designed, a multi-operating system remote loading server of a server side is provided with an operating system remote loading service program, and a client side is provided with a QuickLoader and a QuickDriver, so that the server side can load an operating system kernel for the client side according to a request of the client side, then run the kernel, and then load a file system and an application of the operating system for a user to use. The invention can realize the simple, convenient and rapid remote loading of multiple operating systems when the server and the client are deployed in the same network segment or cross-network segment environment, and enables a user to use a complete operating system at any time.

Description

Method for supporting remote loading of multiple operating systems

Technical Field

The invention provides a method for supporting remote loading of multiple operating systems, which aims at the problem of remote loading of network operating systems in the fields of cloud computing and Internet of things.

Background

With the rapid development of cloud computing and internet of things and the emergence of various client devices, users desire to be able to acquire various personalized services including an operating system from a network through various forms of client devices anytime and anywhere. One implementation of using operating system services over a network is to use operating systems across network segments, where how to enable a client device to efficiently perform remote loading of multiple operating systems in a cross-network segment environment is a critical issue.

The main solutions to this problem at present are the following: first, the conventional Remote operating system loading technology mainly includes RPL (Remote initiation Program Load) and PXE (Preboot Execution environment) of Novell corporation, which are specific components and functions of the operating system for Remote booting, see page 3 of white paper "white is PXE. The RPL uses the NetBEUI communication protocol, and if there is an error frame in the transmission process, the RPL requires retransmission of the entire packet, and the RPL is only suitable for booting supporting a single operating system. PXE is an upgrade of RPL, and TFTP (simple File transfer protocol) is a File transfer protocol, and TFTP is a simple protocol for transferring files, and is designed to perform small File transfer, and it can only obtain or write files from a File server, cannot list directories, and cannot perform authentication. And secondly, a customizable operating system remote loading method based on transparent computing. The method mainly solves the problems of improving the flexibility and the usability of the starting mode of the client equipment, so that a user can select and guide the remote operating system on the client equipment according to the requirement of the user.

By inquiring published patents and published documents at home and abroad, the unpublished documents and patents relate to reports of technical schemes for realizing remote loading of an operating system by simplifying a protocol, encapsulating an AOE (ATA over Ethernet, based on an Ethernet hard disk interface technology transport protocol) message and constructing a multi-operating system remote loading system.

Disclosure of Invention

The technical problem to be solved by the invention is how to efficiently perform remote loading of a multi-operation system by the client equipment under different network segment environments of the server and the client equipment. Aiming at the technical problem, the invention provides a method for supporting remote loading of multiple operating systems, which is superior to the traditional remote loading method of the operating systems in the aspect of the loading time of the operating systems.

The technical scheme of the invention is as follows:

designing a rapid loading transmission protocol QLTP (QuickLoader Transfer protocol), constructing an operating system remote loading service program, an operating system kernel remote loading program QuickLoader and an operating system disk driver QuickDriver. Installing an operating system remote loading service program for a multi-operating system remote loading server at a server; and installing the QuickLoader and the Quickdriver at the client, so that the server can load the operating system for the client according to the request of the client.

The invention specifically comprises the following steps:

in the first step, a rapid loading transport protocol QLTP is designed. QLTP is the information transmission protocol between the QuickLoader, Quickdriver and the server. The network encapsulation Protocol is a tunnel encapsulation Protocol based on a User Datagram Protocol (UDP) and is used for realizing AOE message communication on the network.

The QLTP Protocol packet is composed of an ethernet packet header, an IP (Internet Protocol) packet header, a UDP packet header, and an AOE packet. The content of the Ethernet message header is completely the same as that of the Ethernet protocol message header; the content of the IP message header is completely the same as that of the IP protocol message header; the content of the UDP message header is completely the same as that of the UDP protocol message header; the format of the AOE message is completely the same as that of the existing AOE protocol message, and the AOE message consists of an AOE message header and a data 2 part. The AOE message header has the same format as the message header of the existing AOE protocol message, and the type code contained in the AOE message header is used for distinguishing the type of the AOE message. The QLTP protocol message is divided into six types according to the type code: when the value of the type code is A, the QLTP protocol message is an identity authentication QLTP message, and the data is a user name and a password at the moment; when the type code is B, the QLTP protocol message is an identity authentication processing result QLTP message, and the data is an operating system list bound by the user name; when the type code is C, the QLTP protocol message selects a QLTP message for the operating system, and the data is the name of the operating system selected by the client; when the AOE type code is D, transmitting a QLTP message for an operating system kernel by using the QLTP protocol message, wherein the data is the kernel in an operating system image file; when the AOE type code is E, the QLTP protocol message is a disk operation QLTP message, and the data is a disk operation command at the moment; when the AOE type code is F, the QLTP protocol message is a disk operation processing result QLTP message, and the data is a file system and application in an operating system image file at the moment.

And secondly, constructing a multi-operating-system remote loading system which consists of a server and a client. The server side refers to a server cluster providing remote loading of multiple operating systems, and the client side refers to intelligent equipment (such as a self-service terminal, a registration machine, a computer, a mobile phone and the like) connected with the server cluster through a router. The server cluster comprises a Dynamic Host Configuration Protocol (DHCP) server and a multi-operating system remote loading server, wherein the DHCP server allocates an IP address to a client according to a DHCP request sent by the client, the multi-operating system remote loading server is provided with an operating system remote loading service program, and the operating system is loaded according to the client request. The server cluster can also comprise a TFTP (Trivial File Transfer Protocol) server, wherein the TFTP server downloads a QuickLoader execution File to the client according to a client TFTP request; and a PXE module QuickLoader and Quickdriver are run on the client. The QuickLoader is a program for requesting a server to load an operating system kernel, and can be stored on a TFTP server when the TFTP server exists; quickdriver is a program that enables remote loading of file systems and applications in operating system image files. The PXE module is a pre-boot execution environment for remotely booting an operating system, and is composed of a DHCP client and a TFTP client. The DHCP client sends a DHCP request to a DHCP server to obtain a client IP address (when a TFTP server exists, the IP address of the TFTP server is also obtained); when a TFTP server exists, the TFTP client sends a TFTP request to the TFTP server according to the IP address of the TFTP server so as to load a QuickLoader executable file.

The server-side operating system remote loading service program is a client-side remote loading operating system and consists of a server-side information transmission module, a server-side user authentication management module, a server-side virtual disk service module, a server-side user access management module and a database.

The database comprises a user table and an access record table. The user table stores user identity information and corresponding user selectable operating system list information, including user name, password, operating system list 3 fields, the number of user table entries is the number of users. The user name refers to the account name of the user login client; the password refers to the password of the user login client; the operating system list refers to a list of types of operating systems that the server can provide. The access record table stores user access records, including 4 fields of user name, record time, operation type and operation result. The meaning of the user name is the same as that of the user name in the user table; the recording time refers to the time when the record corresponding to the user name is generated; the operation types are 3, namely identity authentication, operation system kernel downloading and disk operation, and correspond to 3 operations requested by the client to the server; the operation results are 2 types of success and failure, wherein the success refers to the success of identity authentication, the success of downloading the kernel of the operating system or the success of disk operation, and the failure refers to the failure of identity authentication, the failure of downloading the kernel of the operating system or the failure of disk operation; the size of the access record table is the number of times of user access.

The server information transmission module is connected with the server user authentication management module, the server virtual disk service module and the client. The server information transmission module receives the identity authentication QLTP message from the client and decapsulates the identity authentication QLTP message to obtain an AOE identity authentication message, and transmits the AOE identity authentication message to the server user authentication management module; and receiving the AOE identity authentication processing result message from the service end user authentication management module, packaging the AOE identity authentication processing result message into an identity authentication result QLTP message, and sending the identity authentication result QLTP message to the client. The server information transmission module receives the QLTP message of the disk operation from the client and decapsulates the message to obtain an AOE disk operation message, and transmits the AOE disk operation message to the server virtual disk service module; and receiving the AOE disk operation processing result message from the virtual disk service module, packaging the AOE disk operation processing result message into a disk operation result QLTP message, and sending the QLTP message to the client. The server information transmission module receives the QLTP message selected by the operating system from the client and decapsulates the QLTP message selected by the operating system to obtain an AOE operating system selection message, and transmits the AOE operating system selection message to the server virtual disk service module; and receiving the kernel transmission message of the AOE from the virtual disk service module of the server, packaging the kernel transmission message of the AOE into a kernel transmission QLTP message of the operating system, and sending the QLTP message to the client. The decapsulation means decapsulating the QLTP message into an AOE message by sequentially removing an Ethernet message header, an IP message header and a UDP message header in the QLTP message to obtain the AOE message; the encapsulation means encapsulating the AOE message into a QLTP message, and the method is to add a UDP message header, an IP message header and an Ethernet message header to the AOE message in sequence to obtain the QLTP message.

The server user authentication management module is connected with the server information transmission module, the server user access management module and the database. The service end user authentication management module authenticates the AOE identity authentication message received from the service end information transmission module, namely, data (namely user name and password) in the AOE identity authentication message is compared with the user name and the password in the user table in the database, if the user identity is legal, an operating system list corresponding to the user name is obtained, the operating system list is stored in the data of the AOE identity authentication processing result message, and a user access record is generated. And if the user identity is not in the user table, the authentication fails, and the server-side user authentication management module stores the idle operating system list in the data of the AOE identity authentication processing result message and generates a user access record. And returning the AOE identity authentication processing result message to the server information transmission module, and sending the user access record to the server user access management module.

The server virtual disk service module is connected with the server information transmission module and the server user access management module. And the server virtual disk service module operates the server disk according to the AOE disk operation message received from the server information transmission module to generate a user access record and an AOE disk operation processing result message. When the disk operation of the server virtual disk service module is successful, a file read by the server virtual disk service module is placed in a data part of an AOE disk operation processing result message, a user access record indicates that a user name is the user name of a current client, the time is the time of AOE disk operation completion (namely the current system time of a multi-operating system remote loading server generating the user access record), the operation type is AOE disk read operation, and the operation result is successful. When the virtual disk service module of the server fails to read the disk, disk reading failure information is put into a data part of an AOE disk operation processing result message, a user access record is recorded, wherein the user name is the user name of the current client, the time is the AOE disk operation failure time, the operation type is the AOE disk reading operation, and the operation result is failure. And returning the AOE disk operation processing result message to the server information transmission module, and sending the user access record to the server user access management module. The server virtual disk service module compares data in the AOE operating system selection message (namely the name of the operating system selected by the client) with an operating system list in a database user table according to the AOE operating system selection message received from the server information transmission module, if the operating system list in the user table contains the operating system selected by the client, the kernel in the operating system image file is put into a data part of the kernel transmission message of the AOE operating system, and the kernel transmission message of the AOE operating system is returned to the server information transmission module.

The server user access management module is connected with the server virtual disk service module, the server user authentication management module and the database, and stores the user access records received from the server user authentication module and the user access records from the server virtual disk service module into an access record table of the database.

The QuickLoader executable file can be directly installed on the client, can also be stored on a server TFTP server, and is downloaded to local execution by the client (the condition is suitable for the client without a disk), and the QuickLoader is responsible for interacting with a remote loading service program of a server operating system, and acquiring and loading an operating system kernel. The system consists of a network card driving module, a QuickLoader information transmission module, a QuickLoader initialization module and a user authentication and operating system selection module.

The network card driving module is connected with the QuickLoader information transmission module and the server side, and sends the identity authentication QLTP message and the operating system selection QLTP message received from the QuickLoader information transmission module to the server side, and sends the identity authentication processing result QLTP message received from the server side and the operating system kernel transmission QLTP message to the QuickLoader information transmission module.

The QuickLoader information transmission module is connected with the user authentication and operation system selection module and the network card drive module. The QuickLoader information transmission module encapsulates the AOE identity authentication message received from the user authentication and operating system selection module and sends the encapsulated identity authentication QLTP message to the network card driving module; the QuickLoader information transmission module decapsulates the identity authentication processing result QLTP message received from the network card driving module and sends the obtained AOE identity authentication processing result message to the user authentication and operating system selection module; the QuickLoader information transmission module encapsulates the AOE operating system selection message received from the user authentication and operating system selection module and sends the operating system selection QLTP message obtained after encapsulation to the network card driving module; and the QuickLoader information transmission module decapsulates the QLTP message transmitted by the kernel of the operating system received from the network card driving module and sends the decapsulated and obtained kernel transmission message of the AOE operating system to the user authentication and operating system selection module.

The QuickLoader initialization module is connected with a DHCP client side in the PXE module, acquires the IP address of the remote loading server of the multiple operating systems and the IP address of the client side from the DHCP client side, and then acquires the MAC address of the remote loading server of the multiple operating systems according to the IP address of the remote loading server of the multiple operating systems.

And the user authentication and operating system selection module is connected with the QuickLoader information transmission module. The user authentication and operating system selection module generates an AOE identity authentication message and sends the AOE identity authentication message to the QuickLoader information transmission module, receives an AOE identity authentication processing result message sent back by the QuickLoader information transmission module, obtains an operating system list according to the data part of the AOE identity authentication processing result message, displays the operating system list on a client interface, and after receiving an operating system selected by a user on the client interface, puts the selected operating system name into the data part in the AOE operating system selection message and sends the AOE operating system selection message to the QuickLoader information transmission module; and the user authentication and operating system selection module receives the AOE operating system kernel transmission message sent back by the QuickLoader information transmission module, and obtains the operating system kernel according to the data part in the AOE operating system kernel transmission message.

The Quickdriver is a component of an operating system kernel, and interacts with a remote loading service program of a server operating system through a QLTP message during running. The system consists of a QuickDriver initialization module, a QuickDriver information transmission module, a virtual disk drive standard routine module and a network card interface module.

The network card interface module is connected with the QuickDriver information transmission module and the server side. And the network card interface module sends the QLTP message of the disk operation received from the QuickDriver information transmission module to the server side, and sends the QLTP message of the disk operation processing result received from the server side to the QuickDriver information transmission module.

The Quickdriver information transmission module is connected with the network card interface module and the virtual disk drive standard routine module. The Quickdriver information transmission module receives an AOE disk operation message from the virtual disk drive standard routine module, packages the AOE disk operation message into a disk operation QLTP message, and sends the disk operation QLTP message to the network card interface module; and the Quickdriver information transmission module decapsulates the disk operation processing result QLTP message received from the network card interface module into an AOE disk operation processing result message, and sends the AOE disk operation processing result message to the virtual disk drive standard routine module. The Quickdriver initialization module acquires the IP address of the remote loading server and the IP address of the client of the multi-operating system, and acquires the MAC address of the remote loading server of the multi-operating system according to the IP address of the remote loading server of the multi-operating system. (since after a QuickDriver load, the operating system has been unrolled and loaded in client memory, the former Quickloader is overwritten, thus requiring the retrieval of IP and MAC addresses.)

The virtual disk drive standard routine module is connected with the Quickdriver information transmission module. And the virtual disk drive standard routine module sends the AOE disk operation message to the QuickDriver information transmission module and receives the AOE disk operation processing result message from the QuickDriver information transmission module.

Thirdly, the remote loading of the multiple operating systems is completed by utilizing the remote loading system of the multiple operating systems, and the specific method comprises the following steps:

3.1 the client runs the QuickLoader execution file, the method is: if the client stores the QuickLoader execution file, directly running, and turning to 3.2; if the QuickLoader execution file is stored on the TFTP server, the DHCP client of the client PXE module of the sub 3.1.13.1.1 sends a DHCP request to the DHCP server.

3.1.2 the server DHCP server allocates the client IP address and the TFTP server IP address according to the DHCP request received from the client, and sends the client IP address and the TFTP server IP address to the DHCP client.

And 3.1.3, the TFTP client of the PXE module of the client connects the TFTP server corresponding to the IP address according to the TFTP server IP address obtained by 3.1.2, and requests the TFTP server to download the QuickLoader execution file.

3.1.4 TFTP server sends the QuickLoader execution file to TFTP client of the client, and the client runs the QuickLoader execution file.

3.2 starting the QuickLoader initialization module to complete the network initialization work, the method is:

the QuickLoader initialization module acquires the IP address of the remote loading server of the multiple operating systems and the IP address of the client from the DHCP client, and then acquires the MAC address of the remote loading server of the multiple operating systems according to the IP address of the remote loading server of the multiple operating systems. 3.3 the QuickLoader initiates user identity authentication to the server, the server performs user identity authentication, and the client constructs the operating system to select the QLTP message, the specific steps are as follows:

3.3.1 QuickLoader constructs and sends identity authentication QLTP message to a multi-operation system remote loading server (namely the multi-operation system remote loading server with the MAC address obtained in the step 3.2), and the method comprises the following steps:

3.3.1.1 QuickLoader user authentication and operating system selection module receives user name and password input by user from keyboard, puts the user name and password into data part of AOE identity authentication message to form AOE identity authentication message, and sends the AOE identity authentication message to QuickLoader information transmission module;

3.3.1.2 the QuickLoader information transmission module encapsulates the received AOE identity authentication message, and when encapsulating, puts the MAC address of the remote loading server of the multi-operation system into the Ethernet message header, puts the IP address of the client and the IP address of the remote loading server of the multi-operation system into the IP protocol message header, and sends the encapsulated identity authentication QLTP message to the network card driving module;

3.3.1.3 the network card driver module sends the identity authentication QLTP message to the multi-os remote loading server.

3.3.2 after receiving the QLTP message of identity authentication, carry on the user's identity authentication, the method is:

3.3.2.1 server information transmission module of the remote loading server of multiple operating systems receives identity authentication QLTP message, decapsulates it into AOE identity authentication message, and sends the AOE identity authentication message to the service end user authentication management module;

3.3.2.2 the server user authentication management module extracts the user name and password information from the AOE identity authentication message data part, and compares with the user name and password in the user table in the database, if the user name and password combination (i.e. the user name and password are both the same) which is the same as the user name and password in the AOE identity authentication message is found in the user table, the user identity is legal, and gets the operating system list corresponding to the user name, and stores the operating system list in the data of the AOE identity authentication processing result message, and generates the user access record, the user name in the user access record is the user name of the current client, the time is the time of completing the identity authentication (i.e. the current system time of the multi-operating system remote loading server generating the user access record), the operation type is the identity authentication operation, and the operation result is successful. If a user name and password combination (namely any one of the user name or the password is different) which is the same as the user name and the password in the AOE identity authentication message is not found in the user table, authentication fails, the server-side user authentication management module stores the idle operation system list in data of the AOE identity authentication processing result message and generates a user access record, wherein the user name in the user access record is the user name of the current client side, the time is the time of failure of the identity authentication message, the operation type is identity authentication operation, and the operation result is failure. And returning the AOE identity authentication processing result message to the server information transmission module, and sending the user access record to the server user access management module.

3.3.2.3 the service end user access management module stores the user access record in the access record table of the database;

3.3.2.4 the service end information transmission module encapsulates the AOE identity authentication processing result message into an identity authentication processing result QLTP message and sends the identity authentication processing result QLTP message to the client.

3.3.3 the client receives the QLTP message of the identity authentication processing result, constructs the operating system according to the QLTP message of the identity authentication processing result and selects the QLTP message, the method is as follows:

3.3.3.1 the network card driving module of the QuickLoader delivers the identity authentication processing result QLTP message to the QuickLoader information transmission module;

3.3.3.2QuickLoader information transmission module decapsulates the identity authentication processing result QLTP message, and sends the obtained AOE identity authentication processing result message to the user authentication and operating system selection module;

3.3.3.3 the user authentication and operating system selection module judges according to the data of the AOE identity authentication processing result message, if the operating system list in the data is not empty, extracts the operating system list, and turns to 3.3.3.4; if the operating system list in the data is empty, prompting that the user name or the password is input wrongly, and turning to 3.3.1 to perform identity authentication again;

3.3.3.4 the user authentication and operating system selection module according to the received user selected operating system from the keyboard (i.e. the client selected operating system name), putting the client selected operating system name into the data part of the AOE operating system selection message, constructing the AOE operating system selection message, and sending the AOE operating system selection message to the QuickLoader information transmission module;

3.3.3.5 QuickLoader information transmission module encapsulates AOE operating system selection message, when encapsulating, puts MAC address of multi-operating system remote loading server into Ethernet message header, puts client IP address and multi-operating system remote loading server IP address into IP protocol message header, and sends the operating system selection QLTP message obtained by encapsulation to network card driving module;

3.3.3.6 the network card driving module sends QLTP message selected by the operating system to the server.

3.4 the server selects the operating system according to the QLTP message selected by the operating system, and obtains the QLTP message transmitted by the kernel of the operating system, the method is:

3.4.1 the service end information transmission module de-encapsulates the received QLTP message, and sends the de-encapsulated AOE message to the service end virtual disk service module;

3.4.2 after receiving the AOE operation system selection message, the service end virtual disk service module selects an operation system from a local disk (i.e. a disk of a multi-operation system remote loading server) according to the data part of the AOE operation system selection message, places the kernel in the selected operation system image file into the data part of the AOE operation system kernel transmission message, and sends the AOE operation system kernel transmission message to the service end information transmission module;

meanwhile, the server virtual disk service module generates a user access record, the user name is the user name of the current client, the time is the time for completing the selection of the operating system (namely the current system time for remotely loading the server by the multiple operating systems when the selection of the operating system is completed), the operation type is the selection operation of the operating system, and the operation result is successful. Sending the user access record to a server user access management module;

3.4.3 the server user access management module stores the received user access record into an access record table of the database;

3.4.4 the service end information transmission module encapsulates the AOE operating system kernel transmission message into an operating system kernel transmission QLTP message, sends the operating system kernel transmission QLTP message to the client, puts the MAC address of the multi-operating system remote loading server into the Ethernet message header during encapsulation, and puts the client IP address and the multi-operating system remote loading server IP address into the IP protocol message header.

3.5QuickLoader processes QLTP message transmitted by the kernel of the operating system, obtains the kernel of the operating system, and starts the operating system, the method is as follows:

3.5.1 the QuickLoader network card driver sends the received QLTP message transmitted by the kernel of the operating system to the QuickLoader information transmission module;

3.5.2 the QuickLoader information transmission module decapsulates the QLTP message transmitted by the kernel of the operating system, and transmits the kernel transmission message of the AOE operating system obtained by decapsulation to the user authentication and operating system selection module;

3.5.3 the user authentication and operating system selection module extracts the kernel of the operating system from the received data of the AOE kernel transmission message and starts the operating system. Since the QuickDriver is in the kernel of the operating system, the QuickDriver is started at the same time when the operating system is started.

3.6 the QuickDriver initialization module starts to complete the initialization work, the method is:

the QuickDriver initialization module acquires the IP address of the remote loading server of the multiple operating systems and the IP address of the client from the DHCP client, and then acquires the MAC address of the remote loading server of the multiple operating systems according to the IP address of the remote loading server of the multiple operating systems.

3.7 the QuickDriver constructs a disk operation QLTP message and sends the message to the server, the method is as follows:

3.7.1 Quickdriver virtual disk drive standard routine module constructs the disk operation instruction of the client end by the user into AOE disk operation message and sends the AOE disk operation message to the Quickdriver information transmission module;

3.7.2 the Quickdriver information transmission module encapsulates the AOE message into a disk operation QLTP message, sends the disk operation QLTP message to the network card interface module, and during encapsulation, puts the MAC address of the multi-operating system remote loading server into an Ethernet message header and puts the client IP address and the multi-operating system remote loading server IP address into an IP protocol message header;

3.7.3 the network card interface module sends QLTP message of disk operation to the multi-OS remote load server (i.e. the multi-OS remote load server with MAC address obtained in step 3.2).

3.8 the server side performs disk operation according to the received QLTP message, the method is as follows:

3.8.1 the server information transmission module decapsulates the QLTP message, and sends the obtained AOE message to the server virtual disk service module;

3.8.2 after receiving the AOE disk operation message, the server virtual disk service module extracts the disk operation instruction from the data part of the AOE disk operation message, and reads the disk of the multi-operating system remote loading server, constructs the file system and the application in the read operating system image file into the data part of the AOE disk operation processing result message, and sends the AOE disk operation processing result message to the server information transmission module; meanwhile, the server virtual disk service module generates a user access record, the user name is the user name of the current client, the disk operation time is the time for completing the reading of the disk, the disk operation is the reading of the disk, and the disk operation processing result is successful, and the user access record is sent to the server user access management module;

3.8.3 the service end user access management module stores the user access record in the access record table of the database;

3.8.4, the server information transmission module encapsulates the AOE disk operation processing result message into a disk operation processing result QLTP message, and sends the disk operation processing result QLTP message to the client.

3.9 the QuickDriver obtains the file system and application of the operating system according to the received QLTP message of the disk operation processing result, and the processing flow is as follows:

3.9.1 the QuickDriver network card interface module sends the QLTP message of the disk operation processing result to the QuickDriver information transmission module;

3.9.2 the Quickdriver information transmission module decapsulates the QLTP message of the disk operation processing result, and sends the AOE disk operation processing result message obtained by decapsulation to the virtual disk drive standard routine module;

3.9.3 Quickdriver virtual disk drive standard routine module receives the AOE disk operation processing result message, and then takes out the data part of the AOE disk operation processing result message to obtain the file system and application of the operating system for the user of the client.

The invention can achieve the following technical effects:

1. the invention can realize the remote loading of the multiple operating systems when the server and the client are deployed in the same network segment or cross-network segment environment.

2. The invention not only completes the downloading and execution of the kernel of the operating system, but also becomes the downloading of the file system and the application of the operating system, so that a user can use a complete operating system at any time.

3. Because the QLTP protocol is adopted for information transmission, the protocol stack of the traditional remote recording operation system for information transmission is simplified, and the information transmission is simple, convenient and smooth.

Drawings

FIG. 1 is a QLTP message structure diagram constructed in the first step of the present invention;

FIG. 2 is a general structure diagram of a multi-OS remote loading system constructed in the second step of the present invention;

FIG. 3 is a diagram of the operating system remote loading service software architecture of the present invention;

FIG. 4 is a diagram of a network launcher QuickLoader software architecture for remotely loading an operating system in accordance with the present invention;

FIG. 5 is a software structure diagram of QuickDriver virtual disk driver of the operating system of the present invention;

fig. 6 is an overall flow chart of the present invention.

Detailed Description

Fig. 6 is an overall flow chart of the present invention. As shown in fig. 6, the present invention includes the steps of:

in the first step, a rapid loading transport protocol QLTP is designed. As shown in fig. 1, the QLTP protocol packet is composed of an ethernet packet header, an IP packet header, a UDP packet header, and an AOE packet. The content of the Ethernet message header is completely the same as that of the Ethernet protocol message header; the content of the IP message header is completely the same as that of the IP protocol message header; the content of the UDP message header is completely the same as that of the UDP protocol message header; the format of the AOE message is completely the same as that of the existing AOE protocol message, and the AOE message consists of an AOE message header and a data 2 part. The AOE message header has the same format as the message header of the existing AOE protocol message, and the type code contained in the AOE message header is used for distinguishing the type of the AOE message. The messages are divided into six types according to the type code QLTP protocol: when the value of the type code is A, the QLTP protocol message is an identity authentication QLTP message, and the data is a user name and a password at the moment; when the type code is B, the QLTP protocol message is an identity authentication processing result QLTP message, and the data is an operating system list bound by the user name; when the type code is C, the QLTP protocol message selects a QLTP message for the operating system, and the data is the name of the operating system selected by the client; when the AOE type code is D, transmitting a QLTP message for the kernel of the operating system by using the QLTP protocol message, wherein the data is the kernel of the operating system; when the AOE type code is E, the QLTP protocol message is a disk operation QLTP message, and the data is a disk operation command at the moment; when the AOE type code is F, the QLTP protocol message is a disk operation processing result QLTP message, and the data is a file system and application of an operating system.

And secondly, constructing a multi-operating-system remote loading system which is composed of a server and a client as shown in FIG. 2. The server side is a server cluster for providing remote loading of multiple operating systems, and the client side is intelligent equipment connected with the server cluster through a router. The server cluster comprises a DHCP server and a multi-operating system remote loading server, the DHCP server allocates an IP address to the client according to a DHCP request sent by the client, the multi-operating system remote loading server is provided with an operating system remote loading service program, and the operating system is loaded according to the request of the client. The server cluster may also include a TFTP server (the dotted box shown in FIG. 2 indicates that the server is selectively available), which downloads the QuickLoader execution file to the client according to the client TFTP request; and a PXE module, a QuickLoader and a Quickdriver are run on the client. The QuickLoader is a program for requesting a server to load an operating system kernel, and can be stored on a TFTP server when the TFTP server exists; quickdriver is a program that enables remote loading of file systems and applications in operating system image files. The PXE module is a pre-boot execution environment for remotely booting an operating system, and is composed of a DHCP client and a TFTP client. The DHCP client sends a DHCP request to a DHCP server to obtain a client IP address (when a TFTP server exists, the IP address of the TFTP server is also obtained); when a TFTP server exists, the TFTP client sends a TFTP request to the TFTP server according to the IP address of the TFTP server so as to load a QuickLoader executable file.

As shown in fig. 3, the server-side operating system remote loading service program is a client-side remote loading operating system, and is composed of a server-side information transmission module, a server-side user authentication management module, a server-side virtual disk service module, a server-side user access management module, and a database.

The server information transmission module is connected with the server user authentication management module, the server virtual disk service module and the client. The server information transmission module receives the identity authentication QLTP message from the client and decapsulates the identity authentication QLTP message to obtain an AOE identity authentication message, and transmits the AOE identity authentication message to the server user authentication management module; and receiving the AOE identity authentication processing result message from the service end user authentication management module, packaging the AOE identity authentication processing result message into an identity authentication result QLTP message, and sending the identity authentication result QLTP message to the client. The server information transmission module receives the QLTP message of the disk operation from the client and decapsulates the message to obtain an AOE disk operation message, and transmits the AOE disk operation message to the server virtual disk service module; and the AOE disk operation processing result message received from the virtual disk service module is packaged into a disk operation result QLTP message and sent to the client. The server information transmission module receives the QLTP message selected by the operating system from the client and decapsulates the QLTP message selected by the operating system to obtain an AOE operating system selection message, and transmits the AOE operating system selection message to the server virtual disk service module; and receiving the kernel transmission message of the AOE from the virtual disk service module of the server, packaging the kernel transmission message of the AOE into a kernel transmission QLTP message of the operating system, and sending the QLTP message to the client.

The server virtual disk service module is connected with the server information transmission module and the server user access management module. And the server virtual disk service module operates the server disk according to the AOE disk operation message received from the server information transmission module to generate a user access record and an AOE disk operation processing result message. When the disk operation of the server virtual disk service module is successful, a file read by the server virtual disk service module is placed in a data part of an AOE disk operation processing result message, a user access record indicates that a user name is the user name of a current client, the time is the time of AOE disk operation completion (namely the current system time of a multi-operating system remote loading server generating the user access record), the operation type is AOE disk read operation, and the operation result is successful. When the virtual disk service module of the server fails to read the disk, disk reading failure information is put into a data part of an AOE disk operation processing result message, a user access record is recorded, wherein the user name is the user name of the current client, the time is the AOE disk operation failure time, the operation type is the AOE disk reading operation, and the operation result is failure. And returning the AOE disk operation processing result message to the server information transmission module, and sending the user access record to the server user access management module. The server virtual disk service module compares data in the AOE operating system selection message (namely the name of the operating system selected by the client) with an operating system list in a database user table according to the AOE operating system selection message received from the server information transmission module, if the operating system list in the user table contains the operating system selected by the client, the kernel part in the operating system image file is put into the data part of the AOE operating system kernel transmission message, and the AOE operating system kernel transmission message is returned to the server information transmission module.

As shown in fig. 4, the QuickLoader comprises a network card driver module, a QuickLoader information transmission module, a QuickLoader initialization module, and a user authentication and operating system selection module.

The QuickLoader initialization module acquires the IP address of the remote loading server of the multiple operating systems and the IP address of the client from the DHCP client, and then acquires the MAC address of the remote loading server of the multiple operating systems according to the IP address of the remote loading server of the multiple operating systems.

As shown in fig. 5, the QuickDriver is composed of a QuickDriver initialization module, a QuickDriver information transmission module, a virtual disk drive standard routine module, and a network card interface module.

The Quickdriver information transmission module is connected with the network card interface module and the virtual disk drive standard routine module. The Quickdriver information transmission module receives an AOE disk operation message from the virtual disk drive standard routine module, packages the AOE disk operation message into a disk operation QLTP message, and sends the disk operation QLTP message to the network card interface module; and the Quickdriver information transmission module decapsulates the disk operation processing result QLTP message received from the network card interface module into an AOE disk operation processing result message, and sends the AOE disk operation processing result message to the virtual disk drive standard routine module.

The QuickDriver initialization module acquires the IP address of the remote loading server of the multiple operating systems and the IP address of the client from the DHCP client, and acquires the MAC address of the remote loading server of the multiple operating systems according to the IP address of the remote loading server of the multiple operating systems.

3.1 the client runs the QuickLoader execution file, the method is: if the client stores the QuickLoader execution file, directly running, and turning to 3.2; if the QuickLoader execution file is stored on the TFTP server, transferring to 3.1.1;

3.1.1 the DHCP client of the client PXE module sends a DHCP request to the DHCP server.

3.3 the QuickLoader initiates user identity authentication to the server, the server performs user identity authentication, and the client constructs the operating system to select the QLTP message, the specific steps are as follows:

3.3.1.2 the QuickLoader information transmission module encapsulates the received AOE identity authentication message and sends the obtained identity authentication QLTP message to the network card driving module, the MAC address of the remote loading server of the multi-operating system is put to the Ethernet message header during encapsulation, and the IP address of the client and the IP address of the remote loading server of the multi-operating system are put to the IP protocol message header;

3.3.3.3 the user authentication and operating system selection module judges according to the data of the AOE identity authentication processing result message, if the operating system list in the data is not empty, extracts the operating system list, and turns to 3.3.3.4; if the operating system list in the data is empty, prompting that the user name or the password is input wrongly, and turning to 3.3.1.1 to perform identity authentication again;

3.3.3.5 QuickLoader information transmission module encapsulates AOE operating system selection message, sends the QLTP message obtained by encapsulation to the network card driving module, puts the MAC address of the multi-operating system remote loading server to the Ethernet message header during encapsulation, and puts the client IP address and the multi-operating system remote loading server IP address to the IP protocol message header;

and 3.4.4, the service end information transmission module encapsulates the AOE operating system kernel transmission message into an operating system kernel transmission QLTP message, and sends the operating system kernel transmission QLTP message to the client. During packaging, the MAC address of the remote loading server of the multiple operating systems is put into an Ethernet message header, and the IP address of the client and the IP address of the remote loading server of the multiple operating systems are put into an IP protocol message header.

3.5.3 user authentication and operating system selection module extracts the operating system kernel from the received data of AOE operating system kernel transmission message, starts the operating system, and starts Quickdriver.

3.8.2 after receiving the AOE disk operation message, the server virtual disk service module extracts the disk operation instruction from the data part of the AOE disk operation message, and reads the disk of the multi-operation system remote loading server, and puts the file system and the application part in the read operation system image file into the data part of the AOE disk operation processing result message, to construct the AOE disk operation processing result message, and sends the AOE disk operation processing result message to the server information transmission module; meanwhile, the server virtual disk service module generates a user access record, the user name is the user name of the current client, the disk operation time is the time for completing the reading of the disk, the disk operation is the reading of the disk, and the disk operation processing result is successful, and the user access record is sent to the server user access management module;

Claims

1. A method for supporting remote loading of multiple operating systems is characterized by comprising the following steps;

designing a rapid loading transmission protocol QLTP which is a tunnel encapsulation protocol based on UDP (user Datagram protocol); the QLTP protocol message consists of an Ethernet message header, an IP message header, namely an Internet protocol message header, a UDP message header and an AOE message, namely a transmission protocol message based on the Ethernet hard disk interface technology; the AOE message consists of an AOE message header and a data 2 part; the AOE message header comprises a type code for distinguishing the type of the AOE message, and the QLTP protocol message is divided into six types according to the type code: when the value of the type code is A, the QLTP protocol message is an identity authentication QLTP message, and the data is a user name and a password at the moment; when the type code is B, the QLTP protocol message is an identity authentication processing result QLTP message, and the data is an operating system list bound by the user name; when the type code is C, the QLTP protocol message selects a QLTP message for the operating system, and the data is the name of the operating system selected by the client; when the AOE type code is D, transmitting a QLTP message for an operating system kernel by using the QLTP protocol message, wherein the data is the kernel in an operating system image file; when the AOE type code is E, the QLTP protocol message is a disk operation QLTP message, and the data is a disk operation command at the moment; when the AOE type code is F, the QLTP protocol message is a disk operation processing result QLTP message, and the data is a file system and application in an operating system image file at the moment;

secondly, constructing a multi-operating-system remote loading system, wherein the system consists of a server and a client; the server side is a server cluster for providing remote loading of multiple operating systems, and the client side is intelligent equipment connected with the server cluster through a router; the server cluster comprises a DHCP server, namely a dynamic host configuration protocol server and a multi-operating system remote loading server, wherein the DHCP server allocates an IP address to a client according to a DHCP request sent by the client, the multi-operating system remote loading server is provided with an operating system remote loading service program, and the operating system is loaded according to the request of the client; the method comprises the steps that a PXE module, a QuickLoader and a QuickDriver are operated on a client; the QuickLoader is a program which requests a server to load an operating system kernel; the Quickdriver is a program for remotely loading a file system and an application in an operating system image file; the PXE module is used for a pre-starting execution environment of a remote starting operation system, and a DHCP client in the PXE module sends a DHCP request to a DHCP server to obtain an IP address of the client;

the server-side operating system remote loading service program is a client-side remote loading operating system and consists of a server-side information transmission module, a server-side user authentication management module, a server-side virtual disk service module, a server-side user access management module and a database;

the database comprises a user table and an access record table; the user table stores user identity information and corresponding user selectable operating system list information, including 3 fields of user name, password and operating system list, and the number of user table entries is the number of users; the user name refers to the account name of the user login client; the password refers to the password of the user login client; the operating system list refers to a type list of operating systems which can be provided by a server; the access record table stores user access records, including 4 fields of user name, recording time, operation type and operation result; the meaning of the user name is the same as that of the user name in the user table; the recording time refers to the time when the record corresponding to the user name is generated; the operation types are 3, namely identity authentication, operation system kernel downloading and disk operation, and correspond to 3 operations requested by the client to the server; the operation results are 2 types of success and failure, wherein the success refers to the success of identity authentication, the success of downloading the kernel of the operating system or the success of disk operation, and the failure refers to the failure of identity authentication, the failure of downloading the kernel of the operating system or the failure of disk operation; the size of the access record table is the number of times of user access;

the server information transmission module is connected with the server user authentication management module, the server virtual disk service module and the client; the server information transmission module receives the identity authentication QLTP message from the client and decapsulates the identity authentication QLTP message to obtain an AOE identity authentication message, and transmits the AOE identity authentication message to the server user authentication management module; receiving an AOE identity authentication processing result message from a server user authentication management module, packaging the AOE identity authentication processing result message into an identity authentication result QLTP message and sending the identity authentication result QLTP message to a client; the server information transmission module receives the QLTP message of the disk operation from the client and decapsulates the message to obtain an AOE disk operation message, and transmits the AOE disk operation message to the server virtual disk service module; receiving an AOE disk operation processing result message from the virtual disk service module, packaging the AOE disk operation processing result message into a disk operation result QLTP message and sending the QLTP message to the client; the server information transmission module receives the QLTP message selected by the operating system from the client and decapsulates the QLTP message selected by the operating system to obtain an AOE operating system selection message, and transmits the AOE operating system selection message to the server virtual disk service module; receiving an AOE operating system kernel transmission message from the service end virtual disk service module, packaging the AOE operating system kernel transmission message into an operating system kernel transmission QLTP message, and sending the operating system kernel transmission QLTP message to the client;

the server user authentication management module is connected with the server information transmission module, the server user access management module and the database; the server-side user authentication management module authenticates the AOE identity authentication message received from the server-side information transmission module, namely, data, namely a user name and a password in the AOE identity authentication message are compared with the user name and the password in a user table in a database, if the user identity is legal, an operating system list corresponding to the user name is obtained, the operating system list is stored in the data of the AOE identity authentication processing result message, and a user access record is generated; if the user identity is not in the user table, authentication fails, the server-side user authentication management module stores the idle operating system list in data of the AOE identity authentication processing result message and generates a user access record; returning the AOE identity authentication processing result message to the server information transmission module, and sending the user access record to the server user access management module;

the server virtual disk service module is connected with the server information transmission module and the server user access management module; the server virtual disk service module operates the server disk according to the AOE disk operation message received from the server information transmission module to generate a user access record and an AOE disk operation processing result message; when the disk operation of the server virtual disk service module is successful, a file read by the server virtual disk service module is put into a data part of an AOE disk operation processing result message, a user access record is that the user name is the user name of the current client, the time is the time for completing the AOE disk operation, the operation type is the AOE disk reading operation, and the operation result is successful; when the virtual disk service module of the server fails to read the disk, disk reading failure information is put into a data part of an AOE disk operation processing result message, a user accesses and records a user name of a current client, time of the current client is AOE disk operation failure time, operation type of the current client is AOE disk reading operation, and an operation result is failure; returning the AOE disk operation processing result message to the server information transmission module, and sending the user access record to the server user access management module; the server virtual disk service module compares the data in the AOE operating system selection message, namely the name of the operating system selected by the client, with an operating system list in a database user table according to the AOE operating system selection message received from the server information transmission module, if the operating system list in the user table contains the operating system selected by the client, the kernel in the operating system image file is put into the data part of the kernel transmission message of the AOE operating system, and the kernel transmission message of the AOE operating system is returned to the server information transmission module;

the server user access management module is connected with the server virtual disk service module, the server user authentication management module and the database, and stores the user access record received from the server user authentication module and the user access record from the server virtual disk service module into an access record table of the database;

the QuickLoader is responsible for interacting with a remote loading service program of a server-side operating system, and acquiring and loading a remote operating system kernel; the system consists of a network card driving module, a QuickLoader information transmission module, a QuickLoader initialization module and a user authentication and operating system selection module;

the network card driving module is connected with the QuickLoader information transmission module and the server side, and sends the identity authentication QLTP message and the operating system selection QLTP message received from the QuickLoader information transmission module to the server side, and sends the identity authentication processing result QLTP message and the operating system kernel transmission QLTP message received from the server side to the QuickLoader information transmission module;

the QuickLoader information transmission module is connected with the user authentication and operation system selection module and the network card drive module; the QuickLoader information transmission module encapsulates the AOE identity authentication message received from the user authentication and operating system selection module and sends the encapsulated identity authentication QLTP message to the network card driving module; the QuickLoader information transmission module decapsulates the identity authentication processing result QLTP message received from the network card driving module and sends the obtained AOE identity authentication processing result message to the user authentication and operating system selection module; the QuickLoader information transmission module encapsulates the AOE operating system selection message received from the user authentication and operating system selection module and sends the operating system selection QLTP message obtained after encapsulation to the network card driving module; the QuickLoader information transmission module decapsulates the QLTP message transmitted by the kernel of the operating system received from the network card driving module and transmits the decapsulated and obtained kernel transmission message of the AOE operating system to the user authentication and operating system selection module;

the QuickLoader initialization module is connected with a DHCP client in the PXE module, acquires the IP address of the remote loading server of the multiple operating systems and the IP address of the client from the DHCP client, and then acquires the MAC address of the remote loading server of the multiple operating systems according to the IP address of the remote loading server of the multiple operating systems;

the user authentication and operating system selection module is connected with the QuickLoader information transmission module; the user authentication and operating system selection module generates an AOE identity authentication message and sends the AOE identity authentication message to the QuickLoader information transmission module, receives an AOE identity authentication processing result message sent back by the QuickLoader information transmission module, obtains an operating system list according to the data part of the AOE identity authentication processing result message, displays the operating system list on a client interface, and after receiving an operating system selected by a user on the client interface, puts the selected operating system name into the data part in the AOE operating system selection message and sends the AOE operating system selection message to the QuickLoader information transmission module; the user authentication and operating system selection module receives an AOE operating system kernel transmission message sent back by the QuickLoader information transmission module, and obtains an operating system kernel according to a data part in the AOE operating system kernel transmission message;

the QuickDriver is a component of an operating system kernel, interacts with a remote loading service program of a server operating system through a QLTP message during running, and consists of a QuickDriver initialization module, a QuickDriver information transmission module, a virtual disk drive standard routine module and a network card interface module;

the network card interface module is connected with the QuickDriver information transmission module and the server side, and sends the disk operation QLTP message received from the QuickDriver information transmission module to the server side and sends the disk operation processing result QLTP message received from the server side to the QuickDriver information transmission module;

the QuickDriver information transmission module is connected with the network card interface module and the virtual disk drive standard routine module, receives an AOE disk operation message from the virtual disk drive standard routine module, packages the AOE disk operation message into a disk operation QLTP message, and sends the disk operation QLTP message to the network card interface module; the Quickdriver information transmission module decapsulates the disk operation processing result QLTP message received from the network card interface module into an AOE disk operation processing result message, and sends the AOE disk operation processing result message to the virtual disk drive standard routine module; the QuickDriver initialization module is connected with a DHCP client side in the PXE module, acquires an IP address of a remote loading server and an IP address of the client side of the multi-operating system from the DHCP client side, and acquires an MAC address of the remote loading server of the multi-operating system according to the IP address of the remote loading server of the multi-operating system;

the virtual disk drive standard routine module is connected with the QuickDriver information transmission module, sends the AOE disk operation message to the QuickDriver information transmission module, and receives the AOE disk operation processing result message from the QuickDriver information transmission module;

3.1 the client runs a QuickLoader execution file;

the QuickLoader initialization module acquires the IP address of the remote loading server of the multiple operating systems and the IP address of the client from the DHCP client, and then acquires the MAC address of the remote loading server of the multiple operating systems according to the IP address of the remote loading server of the multiple operating systems;

3.3.1 the QuickLoader constructs and sends an identity authentication QLTP message to a multi-operation system remote loading server with the MAC address obtained in the step 3.2;

3.3.2 after receiving the QLTP message of identity authentication, carry on the user's identity authentication, receive AOE identity authentication processing result message and produce the user and visit the record, wrap up AOE identity authentication processing result message into QLTP message of identity authentication processing result, and send QLTP message of identity authentication processing result to the customer end, visit the record and store the user and visit the record in the visit record table in the database;

3.3.3.4 user authentication and operating system selection module according to the received user selected operating system from keyboard, namely client selected operating system name, put client selected operating system name into AOE operating system selection message data part, construct AOE operating system selection message, and send AOE operating system selection message to QuickLoader information transmission module;

3.3.3.6 network card drive module sends QLTP message selected by operation system to server;

3.4.2 after receiving the AOE operation system selection message, the virtual disk service module of the server selects an operation system from the disk of the remote loading server of the multi-operation system according to the data part of the AOE operation system selection message, places the kernel in the selected operation system image file into the data part of the kernel transmission message of the AOE operation system, and sends the kernel transmission message of the AOE operation system to the information transmission module of the server; meanwhile, the server virtual disk service module generates a user access record, the user name is the user name of the current client, the time is the current system time of the multi-operating system remote loading server when the selection of the operating system is finished, the operation type is the operating system selection operation, and the operation result is successful; sending the user access record to a server user access management module;

3.4.4 the service end information transmission module encapsulates the AOE operating system kernel transmission message into an operating system kernel transmission QLTP message, sends the operating system kernel transmission QLTP message to the client, puts the MAC address of the multi-operating system remote loading server into an Ethernet message header during encapsulation, and puts the IP address of the client and the IP address of the multi-operating system remote loading server into an IP protocol message header;

3.5.3 user authentication and operating system selection module extracts the operating system kernel from the received data of AOE operating system kernel transmission message, starts the operating system, and starts Quickdriver;

the QuickDriver initialization module acquires the IP address of the remote loading server of the multiple operating systems and the IP address of the client from the DHCP client, and then acquires the MAC address of the remote loading server of the multiple operating systems according to the IP address of the remote loading server of the multiple operating systems;

3.7.3 sending the QLTP message to the remote loading server with the MAC address obtained in step 3.2;

3.8.4, the server side information transmission module encapsulates the AOE disk operation processing result message into a disk operation processing result QLTP message, and sends the disk operation processing result QLTP message to the client side;

3.9.3 Quickdriver virtual disk drive standard routine module receives the AOE disk operation processing result message, and then takes out the data part of the AOE disk operation processing result message to obtain the file system and application of the operating system.

2. The method for supporting multiple operating systems to be remotely loaded according to claim 1, wherein the intelligent device is a self-service terminal, a registration machine, a computer, or a mobile phone.

3. The method as claimed in claim 1, wherein the server cluster includes a TFTP server, i.e. a simple file transfer protocol server, the QuickLoader execution file is stored on the TFTP server, the DHCP client in the PXE module sends a DHCP request to the DHCP server to obtain an IP address of the TFTP server, the TFTP client sends a TFTP request to the TFTP server according to the IP address of the TFTP server, and the TFTP server downloads the QuickLoader execution file to the client according to the TFTP request.

4. The method according to claim 1, wherein the decapsulating means decapsulating a QLTP packet into an AOE packet by sequentially removing an ethernet packet header, an IP packet header, and a UDP packet header from the QLTP packet to obtain the AOE packet; the encapsulation means encapsulating the AOE message into a QLTP message, and the method is to add a UDP message header, an IP message header and an Ethernet message header to the AOE message in sequence to obtain the QLTP message.

5. The method for supporting remote loading of multiple operating systems according to claim 3, wherein the client downloads the QuickLoader execution file from the server before running the QuickLoader execution file, and the downloading method is as follows:

3.1.1 the DHCP client of the PXE module of the client sends a DHCP request to the DHCP server;

3.1.2 the server DHCP server allocates the client IP address and the TFTP server IP address according to the DHCP request received from the client, and sends the client IP address and the TFTP server IP address to the DHCP client;

3.1.3 TFTP client of PXE module of customer end connects with TFTP server corresponding to the IP address according to TFTP server IP address that 3.1.2 obtains, and request to download QuickLoader execution file to the TFTP server;

3.1.4 TFTP server sends QuickLoader execution file to TFTP client of client.

6. The method for supporting multiple operating systems remote loading according to claim 1, wherein the method for the QuickLoader to construct and send the identity authentication QLTP message to the multiple operating systems remote loading server in step 3.3.1 is as follows:

7. The method for supporting multiple operating systems remote loading according to claim 1, wherein 3.3.2 steps of the method for the server to perform user identity authentication comprises:

3.3.2.2 the server user authentication management module extracts the user name and password information from the AOE identity authentication message data part, and compares with the user name and password in the user table in the database, if the user name and password combination same as the user name and password in the AOE identity authentication message is found in the user table, the user identity is legal, and obtains the operating system list corresponding to the user name, stores the operating system list in the data of the AOE identity authentication processing result message, and generates the user access record, the user name in the user access record is the user name of the current client, the time is the time of completing the identity authentication, that is, the current system time, the operation type is the identity authentication operation, and the operation result is successful of the multi-operating system remote loading server generating the user access record; if the user name and password combination which are the same as the user name and password in the AOE identity authentication message are not found in the user table, authentication fails, the server-side user authentication management module stores the idle operation system list in data of the AOE identity authentication processing result message and generates a user access record, wherein the user access record comprises the user name of the current client, the time of failure of the identity authentication message, the operation type of the identity authentication operation and the failure of the operation result; returning the AOE identity authentication processing result message to the server information transmission module, and sending the user access record to the server user access management module;