CN111737197A - System and method for realizing non-stop migration service system - Google Patents
System and method for realizing non-stop migration service system Download PDFInfo
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Abstract
The invention discloses a system and a method for realizing non-stop service system migration, wherein the system comprises: the source end traverses and reads all directories and files of the source end system, monitors the change of the directories and files of the source end system in real time to generate log information, and transmits the read and monitored contents to the target end; the target end is used for receiving the data sent by the source end and storing the data to the corresponding target end catalog, adapting the data according to the received data and the target end driving information, and covering the adapted data with the corresponding data of the target end.
Description
Technical Field
The invention relates to the technical field of computer networks and data replication, in particular to a system and a method for realizing non-stop migration of a service system.
Background
In the information age, an information system of an enterprise mainly comprises a physical server, an operating system and an application which run in the environment of the physical server, wherein the physical server belongs to hardware, and the operating system and the application belong to software. The business system in the present invention refers to a software part composed of an operating system and applications.
Over time, the hardware of the physical server needs to be updated, the infrastructure of the information technology is also changed, and the development is gradually carried out towards virtualization and cloud computing, which also means that the business system needs to be shifted to a new environment.
The business system mainly comprises an operating system and applications, wherein the operating system is mainly linux and windows, the applications are very diversified, and a set of business system similar to the original business system is required to be reconstructed in another environment, which is often a huge project.
Currently, the migration of the service system mainly includes the following steps:
1. the source system that needs to be migrated is shut down and restarted with a boot disk. The target end system also boots with a boot disk. And starting software in the disc by the source terminal and the target terminal to complete data synchronization. And after the synchronization is finished, the target end is closed, the starting disc is taken out, and the system is re-entered. This approach requires the source end system to be shut down, resulting in the source end system being unable to continue to provide services;
2. instead of shutting down the source system that needs to be migrated, a snapshot is taken of the source system. The target end system starts with the boot disk. Data synchronization is accomplished by software installed on the source system and software in the target end system boot disk. And after the synchronization is finished, the target end is closed, the starting disc is taken out, and the system is re-entered. The method only carries out snapshot on the source system and only transmits snapshot data, so that new data generated in the migration process cannot be synchronized to the target end
3. The method comprises the steps of not closing a source system needing to be migrated, and capturing the change data of a disk of the source system and transmitting a target end while synchronizing the existing data of the source end. The target end system starts with a starting disc, and receives source end data through software in the starting disc of the target end to complete data synchronization. And after the synchronization is finished, the target end is closed, the starting disc is taken out, and the system is re-entered. This approach has the following disadvantages: firstly, after the source end system is synchronized to the target end by capturing the disk change of the source end system and a disk block level-based synchronization mode, the target end system cannot be started normally due to the fact that the source end lacks the drive required by the target end, even though the drive is injected manually, the method is not only complicated, but also can not solve the drive problem, and finally migration failure can be caused; and the target end needs to start the optical disc, if the target end is the cloud host, because the cloud host does not have the condition for the user to mount and start the optical disc, the migration mode that the optical disc needs to be started is not feasible.
Disclosure of Invention
In order to overcome the defects in the prior art, the present invention provides a system and a method for implementing non-stop migration of a service system, so as to capture source-end change data in real time and transmit the data to a target end without interrupting the running condition of a source-end system, and implement the purpose of migration of the service system without mounting and starting an optical disc and without manually injecting a drive.
In order to achieve the above object, the present invention provides a system for implementing non-stop migration of a service system, including:
the source end traverses and reads all directories and files of the source end system, monitors the change of the directories and files of the source end system in real time to generate log information, and transmits the read and monitored contents to the target end;
and the target end is used for receiving the data sent by the source end, carrying out corresponding processing, carrying out adaptation according to the received data and the target end driving information, and covering the adapted data with the corresponding data of the target end.
Preferably, the source end further includes:
the data reading module is used for traversing and reading all directories and files of the source end system to obtain the directory structure of the source end file system and the content and metadata of all files;
the real-time data capturing module is used for monitoring the change of the catalog and the file of the source end system in real time and generating log information;
and the data transmission module is used for transmitting the content read by the data reading module and the content obtained by the real-time data capturing module through real-time monitoring to a target end.
Preferably, the data reading module further obtains control information of a mapping relationship between a directory containing source data of the source end system and a directory storing the source data in the target end system.
Preferably, the data reading module directly skips over a directory in the memory of the source-end system, and directly reads data of a disk sector where the file is located, for the file which is opened exclusively.
Preferably, the contents of the log information record include, but are not limited to, names of changed directories and files, types of changes, changed contents, offsets of changed contents in files, and time stamps of changed data.
Preferably, the target further comprises:
the data receiving module is used for receiving the data sent by the source end and carrying out corresponding processing according to the type of the received data;
and the operating system adaptation module is used for adapting the received data with the target end driving information and covering the adapted data with a corresponding file of the target end.
Preferably, for the content read by the data reading module, the data receiving module stores all the data of directories and files and the like obtained by traversing the source end system by the data reading module to the directory specified by the target end according to the directory mapping relationship in the received control information, and for the content obtained by the real-time data capturing module, the data receiving module performs one operation again on the corresponding data according to the type of the log information.
Preferably, the operating system adapting module adapts the information related to the drive in the registry of the operating system of the target to the received data, acquires the registry file of the source operating system transmitted by the source system, merges the information related to the drive in the registry of the operating system of the target into the registry file of the source operating system transmitted by the source system, and replaces the registry file of the operating system of the target with the merged registry file, so that the migrated source operating system correctly loads the drive required by the target system.
Preferably, the target end and the source end install operating systems of corresponding versions.
In order to achieve the above object, the present invention further provides a method for implementing non-stop migration of a service system, comprising the following steps:
step S1, the source traverses and reads all directories and files of the source system, monitors the change of the directories and files of the source system in real time to generate log information, and transmits the read and monitored content to the target;
and step S2, receiving the data sent by the source end at the target end, carrying out corresponding processing, carrying out adaptation according to the received data and the target end driving information, and covering the adapted data with the corresponding data of the target end.
Compared with the prior art, the system and the method for realizing the non-stop migration of the business system of the invention monitor the change of the directories and the files of the source end system in real time to generate the log information by traversing and reading all the directories and the files of the source end system, transmit the read and monitored contents to the target end, store the received data sent by the source end to the corresponding target end directory at the target end, adapting according to the received data and the target end driving information, covering the adapted data with the corresponding data of the target end, therefore, the migrated source end operating system can correctly load the drive required by the target end system, the invention can ensure that the running condition of the source end system is not interrupted, the change data of the source end is captured in real time and transmitted to the target end, the optical disc does not need to be mounted and started, and the manual injection drive is not needed, so that the aim of service system migration is fulfilled.
Drawings
Fig. 1 is a system architecture diagram of a system for implementing a non-stop migration service system according to the present invention;
FIG. 2 is a flowchart illustrating steps of a method for implementing a non-stop migration service system according to the present invention;
fig. 3 is a schematic process diagram of migrating a service system without shutdown in the embodiment of the present invention.
Detailed Description
Other advantages and capabilities of the present invention will be readily apparent to those skilled in the art from the present disclosure by describing the embodiments of the present invention with specific embodiments thereof in conjunction with the accompanying drawings. The invention is capable of other and different embodiments and its several details are capable of modification in various other respects, all without departing from the spirit and scope of the present invention.
Fig. 1 is a system architecture diagram of a system for implementing a non-stop migration service system according to the present invention. As shown in fig. 1, a system for implementing a non-stop migration service system according to the present invention includes:
the source end 10 traverses and reads all directories and files of the source end system, monitors changes of the directories and files of the source end system in real time to generate log information, and transmits the read and monitored contents to the target end.
Specifically, the source terminal 10 further includes:
the data reading module 101 is configured to traverse and read all directories and files of the source end system, and obtain a directory structure of the source end file system, and content and metadata of all files.
In the embodiment of the present invention, for a directory only stored in a memory of a source end system (since data only stored in the memory is not stored on a disk, synchronization to a target end is not required), for example, assuming that a source end operating system is a linux system and/proc under linux, the data reading module 101 may directly skip, and for a file which is opened exclusively, the data reading module 101 directly reads data of a disk sector where the file is located. In the invention, the mapping relation is predetermined, before the file transmission is started, the source end server sends the mapping relation to the target end, and the target end establishes a corresponding directory, for example, the target end obtains the mapping relationship of C: \ windows → C: \ FFO \ windows, when the target end receives the C: \ windows \ xxx files or directories transmitted by the source end server, the files or directories are placed under C: \ FFO \ windows \ xxx through the mapping relationship to become C: \ FFO \ windows \ xxx.
The real-time data capturing module 102 is configured to monitor changes of directories and files of the source end system in real time, and generate log information, where the log information records content including, but not limited to, names of changed directories and files, types of changes, changed content, offsets of changed content in files, and timestamps of changed data.
And the data transmission module 103 is configured to transmit the content read by the data reading module 101 and the content monitored and acquired by the real-time data capturing module 102 to a target end. In the embodiment of the present invention, in order to reduce the data transmission amount, the data transmission module 103 may also perform compression and encryption processing on the transmitted data in the data transmission process, and since the encryption and compression technologies adopted herein are both prior art, they are not described herein again.
And the target terminal 20 is configured to perform corresponding processing on the data sent by the receiving terminal 10, perform adaptation according to the received data and the target terminal driving information, and cover the adapted data with the corresponding data of the target terminal. In the present invention, the target 20 and the source need to install operating systems of corresponding versions.
Specifically, the target 20 further includes:
the data receiving module 201 is configured to receive data sent by the source end 10, and perform corresponding processing according to a type of the received data.
In the present invention, the data received by the data receiving module 201 has two types: the first is that the data reading module 101 at the source end traverses all directories and files and some control information obtained by the source end system; the second is log information of directory and file changes monitored and recorded in real time by the real-time data capture module 102 of the source end. For the first data, the data receiving module 201 stores all data, such as directories and files, obtained by the data reading module 101 traversing the source end system to the directory specified by the target end according to the obtained directories and files or according to the directory mapping relationship in the received control information, and for the second data, the data receiving module 201 performs one time of operation again on the corresponding data according to the type of the log information, for example, the log records are write operations on an a file, the a file is stored in a D directory of the target end (according to the directory mapping relationship in the first data), and the data receiving module 201 performs one write operation on the a file in the D directory of the target end.
The operating system adapting module 202 is configured to adapt the received data to the target driver information, and cover the adapted data with data corresponding to the target, so that the migrated source operating system correctly loads the driver required by the target system.
Specifically, for the windows system, the operating system adaptation module 202 adapts the information related to the drive in the registry of the operating system of the target to the received data, that is, obtains the registry file of the source operating system transmitted by the source system, merges the information related to the drive in the registry of the operating system of the target to the registry file of the source operating system transmitted by the source system, and replaces the registry file of the operating system of the target with the merged registry file, so that the migrated source operating system correctly loads the drive required by the target system. That is, for data in the system operation, the data transmitted by the source end system is stored in the temporary directory of the target end, and the information related to the driver in the registry of the target end operating system needs to be merged with the information related to the driver in the registry of the target end operating system and then replace the registry file of the target end operating system, so that the migrated source end operating system can correctly load the driver required by the target end system.
Fig. 2 is a flowchart illustrating steps of a method for implementing a non-stop migration service system according to the present invention. As shown in fig. 2, a method for implementing a non-stop migration service system of the present invention includes the following steps:
step S1, the source traverses and reads all directories and files of the source system, monitors the change of the directories and files of the source system in real time to generate log information, and transmits the read and monitored content to the target.
Specifically, step S1 further includes:
step S100, traverse and read all directories and files of the source end system, and obtain the directory structure of the source end file system, and the content and metadata of all files.
In the embodiment of the present invention, for a directory only stored in a memory of a source end system, if a source end operating system is a linux system, a/proc under the linux is directly skipped, and for a file which is opened exclusively, data of a disk sector where the file is located is directly read. In addition to the source system data, in step S1, some control information is also read, where the control information mainly includes a mapping relationship between a directory of source data of the source system and a directory of a target system storing the source data, that is, in the present invention, data required for system operation cannot directly cover data corresponding to a target, such as a C: \ windows directory of the source system, which needs to be stored under a temporary directory of the target, for example, under a C: \ FFO \ windows path of the target, so that the mapping relationship needs to be acquired, but data not required for system operation is directly covered, in the present invention, the mapping relationship is predetermined, before file transmission is started, the source server sends the mapping relationship to the target, the target establishes a corresponding directory, for example, the target acquires the mapping relationship C: \ windows → C: \\ \ o, when the target end receives the C: \ windows \ xxx files or directories transmitted by the source end server, the files or directories are put under the C: \ FFO \ windows \ xxx to become C: \ FFO \ windows \ xxx through the mapping relation. .
Step S101, monitoring the changes of the directories and files of the source end system in real time, and generating log information, wherein the contents recorded by the log information include, but are not limited to, names of the changed directories and files, types of the changes, changed contents, offsets of the changed contents in the files, and timestamps of the changed data.
And step S102, transmitting the content read in step S100 and the content obtained by real-time monitoring in step S101 to a target terminal. In the specific embodiment of the present invention, the transmitted data may be compressed and encrypted during the data transmission process, and since both the encryption and compression techniques used herein are prior art, they are not described herein again.
And step S2, performing corresponding processing on the data sent by the target receiving end, performing adaptation according to the received data and the target driving information, and covering the adapted data with the corresponding data of the target. In the invention, the target end and the source end need to install operating systems of corresponding versions.
Specifically, step S2 further includes:
step S200, receiving the data sent by the source end, and performing corresponding processing according to the type of the received data.
In the present invention, there are two types of received data: the first is that all directories and files and some control information are obtained by traversing the source end system; the second is log information of directory and file changes of the source system monitored and recorded in real time. For the first data, step S200 stores all data such as directories and files obtained by traversing the source end system to a directory specified by the target end according to the directory mapping relationship in the received control information, and for the second data, step S200 performs one operation on the corresponding data again according to the type of the log information, and if the log records are write operations on an a file, and the a file is stored in a D directory of the target end, performs one write operation on the a file in the D directory of the target end.
Step S201, adapting the received data to the target driver information, and covering the adapted data with the data corresponding to the target, so that the migrated source operating system correctly loads the driver required by the target system.
Specifically, for the windows system, the operating system adaptation module 202 adapts the information related to the driver in the registry of the operating system of the target to the received data, obtains the registry file of the source operating system transmitted by the source system, merges the information related to the driver in the registry of the operating system of the target into the registry file of the source operating system transmitted by the source system, and replaces the registry file of the operating system of the target with the merged registry file, so that the migrated source operating system correctly loads the driver required by the target system.
Examples
In this embodiment, the source end and the target end need to install operating systems of corresponding versions, for example, if the source end system is a linux system, the target end also needs to install the linux system of the corresponding version, and if the source end is a windows system, the target end also needs to install the windows system of the corresponding version. As shown in fig. 3, the source has two types of data to be transmitted, one is a file already existing on the source disk, and the other is changed content of the file that changes during transmission, including changed attributes. For the first type of data, the data reading module obtains the data by traversing and reading all directories and files of the source end system and transmits the data to the target end through the data transmission module, and for the second type of data, the real-time data capturing module monitors the changes of the directories and files of the source end system in real time to generate log information and transmits the log information to the target end through the data transmission module.
After the source end system and the target end system finish data synchronization, if migration action is not executed, the data of the source end system can be kept synchronous with the target end all the time, namely the changed data of the source end system can be transmitted to the target end in real time; and after the migration action is executed, the target end can be automatically restarted, and after the restart, the migration is completed.
In this embodiment, the source end may be a physical machine, or may also be a virtual machine, and the target end may also be a physical machine, a virtual machine, or may also be a cloud host, which is not limited in this disclosure.
In summary, the system and method for realizing non-stop migration of a service system in the present invention monitor changes of directories and files of a source end system in real time to generate log information by traversing and reading all directories and files of the source end system, transmit the read and monitored contents to a target end, store the received data sent by the source end to a corresponding target end directory at the target end, perform adaptation according to the received data and target end driving information, and cover the adapted data with the corresponding data of the target end, so that the migrated source end operating system correctly loads the driving required by the target end system.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Therefore, the scope of the invention should be determined from the following claims.
Claims (10)
1. A system for implementing non-stop migration of a business system, comprising:
the source end traverses and reads all directories and files of the source end system, monitors the change of the directories and files of the source end system in real time to generate log information, and transmits the read and monitored contents to the target end;
and the target end is used for receiving the data sent by the source end, carrying out corresponding processing, carrying out adaptation according to the received data and the target end driving information, and covering the adapted data with the corresponding data of the target end.
2. The system for implementing a non-stop migration service system according to claim 1, wherein said source end further includes:
the data reading module is used for traversing and reading all directories and files of the source end system to obtain the directory structure of the source end file system and the content and metadata of all files;
the real-time data capturing module is used for monitoring the change of the catalog and the file of the source end system in real time and generating log information;
and the data transmission module is used for transmitting the content read by the data reading module and the content obtained by the real-time data capturing module through real-time monitoring to a target end.
3. The system for implementing non-stop migration service system according to claim 2, wherein: the data reading module also obtains control information of the mapping relation between the catalog containing the source data of the source end system and the catalog storing the source data in the target end system.
4. The system for implementing a non-stop migration service system according to claim 3, wherein: the data reading module directly skips directories only stored in the internal memory of the source end system, and directly reads data of a disk sector where the file is located for the file which is opened exclusively.
5. The system for implementing a non-stop migration service system according to claim 3, wherein: the contents of the log information record include, but are not limited to, the names of the changed directories and files, the types of the changes, the contents of the changes, the offsets of the contents of the changes in the files, and the time stamps of the changed data.
6. The system for implementing non-stop migration service system according to claim 3, wherein said target further comprises:
the data receiving module is used for receiving the data sent by the source end and carrying out corresponding processing according to the type of the received data;
and the operating system adaptation module is used for adapting the received data with the target end driving information and covering the adapted data with a corresponding file of the target end.
7. The system for implementing a non-stop migration service system according to claim 6, wherein: for the content read by the data reading module, the data receiving module stores all the data such as directories and files obtained by traversing the source end system by the data reading module to the directory appointed by the target end according to the directory mapping relation in the received control information, and for the content obtained by the real-time data capturing module, the data receiving module performs one operation again on the corresponding data according to the type of the log information.
8. The system for implementing a non-stop migration service system according to claim 6, wherein: the operating system adaptation module adapts the information related to the drive in the registry of the operating system of the target end to the received data, acquires the registry file of the source operating system transmitted by the source end system, merges the information related to the drive in the registry of the operating system of the target end into the registry file of the source operating system transmitted by the source end system, and replaces the registry file of the operating system of the target end by using the merged registry file, so that the migrated source operating system can correctly load the drive required by the target end system.
9. The system for implementing a non-stop migration service system according to claim 1, wherein: and the target end and the source end are provided with operating systems of corresponding versions.
10. A method for realizing non-stop service system migration comprises the following steps:
step S1, the source traverses and reads all directories and files of the source system, monitors the change of the directories and files of the source system in real time to generate log information, and transmits the read and monitored content to the target;
and step S2, receiving the data sent by the source end at the target end, carrying out corresponding processing, carrying out adaptation according to the received data and the target end driving information, and covering the adapted data with the corresponding data of the target end.
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