CN108959504B - Method and system for realizing remote data synchronization of file system - Google Patents
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Abstract
The embodiment of the invention discloses a method and a system for realizing remote data synchronization of a file system, wherein the method comprises the following steps: collecting relevant information of first file system data of a local server through a synchronization agent deployed in the local server, and transmitting the relevant information of the first file system data and a preset data comparison algorithm to a data protection server deployed in a remote server; the data protection server compares the related information of the first file system data with the related information of the second file system data of the remote server through a data comparison algorithm, and feeds back the comparison result to the synchronization agent when the comparison result shows that the related information of the first file system data is different from the related information of the second file system data; the synchronization agent performs data synchronization between the local server and the remote server according to the comparison result. By the scheme of the embodiment, remote protection of the file system data under a low-real-time and low-quality network is realized.
Description
Technical Field
The embodiment of the invention relates to a data synchronization technology, in particular to a method and a system for realizing remote data synchronization of a file system.
Background
In a modern server system, as there Are more and more requirements on data security and reliability of service applications, in order to implement data protection, a common practice is to use a disk array method in a local server disk, for example, to increase data redundancy, and for data protection in different places, a conventional SAN (Storage area Network) Storage mirror image is generally used, and a conventional Storage device and a Storage engine Are required to support, and data is written in both local and different places through the Storage engine, so as to ensure data consistency in local and different places. When the method is used, on one hand, certain requirements are made on the bandwidth of the network, and meanwhile, the network is required to have great stability, if network jitter occurs, the data request can not be returned, and the storage performance is seriously influenced. Meanwhile, SAN network networking needs special equipment FC (fiber channel) and the like, the cost is high, and the SAN network networking cannot be used in small-scale and low-quality network environments.
Disclosure of Invention
In order to solve the above technical problems, embodiments of the present invention provide a method and a system for implementing remote data synchronization of a file system, which can implement remote protection of file system data in a low-quality network with low real-time requirement.
To achieve the object of the embodiment of the present invention, an embodiment of the present invention provides a method for implementing remote data synchronization of a file system, where the method may include:
collecting relevant information of first file system data of a local Server LocalServer through a synchronization Agent deployed in the local Server LocalServer, and transmitting the relevant information of the first file system data and a preset data comparison algorithm to a data protection Server deployed in a remote Server RemoteServer;
the Server compares the related information of the first file system data with the related information of the second file system data of the RemoteServer through a data comparison algorithm, and feeds back the comparison result to the Agent when the comparison result is that the related information of the first file system data is different from the related information of the second file system data;
and the Agent executes data synchronization between the LocalServer and the RemoteServer according to the comparison result.
Optionally, the method may further include: before the Agent executes data synchronization between the LocalServer and the RemoteServer according to the comparison result, the Agent transmits data blocks corresponding to different information in the related information of the first file system data and the related information of the second file system data to the Server so that the Server configures the file system space of the RemoteServer according to the data blocks.
Optionally, the executing, by the Agent, data synchronization between the LocalServer and the RemoteServer according to the comparison result includes:
after the Agent sends the data block to the Server, monitoring and acquiring first file system log journal information of the LocalServer in real time, and transmitting the first file system journal information to the Server;
the Server receives the journal information of the first file system, and plays back the data of the journal information of the first file system in the RemoteServer so as to synchronously copy the data of the journal information of the first file system and realize data synchronization between the LocalServer and the RemoteServer.
Optionally, the method may further include:
and when the comparison result is that the related information of the first file system data is the same as the related information of the second file system data, the Server ignores the comparison result and does not perform the operation of feeding back the comparison result to the Agent.
Optionally, the method may further include: before the Server compares the related information of the first file system data with the related information of the second file system data, the Server configures a data synchronization directory, collects the related information of the second file system data, and fills the related information of the second file system data in the configured data synchronization directory;
the data synchronization directory is configured to list information of related data required to perform data synchronization.
Optionally, the method may further include: before the Server compares the related information of the first file system data with the related information of the second file system data, the Server monitors the request information of the Agent, acquires the related information of the first file system data and a data comparison algorithm from the request information when the request information is monitored, and calls a configuration data synchronization directory to acquire the related information of the second file system data.
Optionally, the method may further include: the Agent maintains a first data table of data synchronization state and data change records of a file system of the LocalServer; the Server maintains a second data table of data synchronization status and data change records for the file system of the RemoteServer,
when network interruption occurs, the Agent and the Server respectively record data change from the network interruption initiation to the network recovery period into a first data table and a second data table;
and when the network is recovered, the Agent and the Server respectively carry out data synchronization according to the contents recorded in the first data table and the second data table.
Optionally, the method may further include: the data buffer and the data synchronization interval are preset.
Optionally, the information related to the first file system data includes: file system information and data block information of the LocalServer; the related information of the second file system data includes: file system information and data block information of the RemoteServer.
Optionally, the data comparison algorithm comprises: message digest algorithm fifth version MD 5.
In order to achieve the object of the embodiment of the present invention, an embodiment of the present invention further provides a system for implementing remote data synchronization of a file system, where the system may include: the system comprises a local Server LocalServer, a synchronous Agent, a remote Server Server and a data protection Server;
the Agent is deployed in the LocalServer and used for collecting relevant information of first file system data of the LocalServer and transmitting the relevant information of the first file system data and a preset data comparison algorithm to the Server;
the Server is deployed in the RemoteServer and used for comparing the related information of the first file system data with the related information of the second file system data through a data comparison algorithm and feeding back the comparison result to the Agent when the comparison result is that the related information of the first file system data is different from the related information of the second file system data;
and the Agent is also used for executing data synchronization between the LocalServer and the RemoteServer according to the comparison result.
The embodiment of the invention comprises the following steps: collecting relevant information of first file system data of a local Server LocalServer through a synchronization Agent deployed in the local Server LocalServer, and transmitting the relevant information of the first file system data and a preset data comparison algorithm to a data protection Server deployed in a remote Server RemoteServer; the Server compares the related information of the first file system data with the related information of the second file system data of the RemoteServer through a data comparison algorithm, and feeds back the comparison result to the Agent when the comparison result is that the related information of the first file system data is different from the related information of the second file system data; and the Agent executes data synchronization between the LocalServer and the RemoteServer according to the comparison result. By the scheme of the embodiment, remote protection of the file system data under a low-real-time and low-quality network is realized.
Additional features and advantages of embodiments of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention. The objectives and other advantages of the embodiments of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The accompanying drawings are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the examples of the application do not constitute a limitation of the embodiments of the invention.
FIG. 1 is a flow chart of a method for implementing remote data synchronization of a file system according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a method for implementing remote data synchronization of a file system according to an embodiment of the present invention;
fig. 3 is a block diagram of a file system remote data synchronization implementation system according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
The steps illustrated in the flow charts of the figures may be performed in a computer system such as a set of computer-executable instructions. Also, while a logical order is shown in the flow diagrams, in some cases, the steps shown or described may be performed in an order different than here.
To achieve the object of the embodiment of the present invention, an embodiment of the present invention provides a method for implementing remote data synchronization of a file system, where the method may include S101 to S103:
s101, collecting relevant information of first file system data of a local Server LocalServer through a synchronization Agent deployed in the local Server LocalServer, and transmitting the relevant information of the first file system data and a preset data comparison algorithm to a data protection Server deployed in a remote Server RemoteServer.
In the embodiment of the present invention, as shown in fig. 2, when protecting a data file, a synchronization Agent may be deployed in a local Server, and parameters of a file system to be backed up and a data protection Server, a data synchronization policy, and the like may be set; the remote Server can deploy a data protection Server, and according to the connection request of the Agent, the Server distributes a corresponding synchronous directory related to a RemoteServer file system to perform data protection on the data of the LocalServer file system.
In the embodiment of the invention, when the Agent end executes a data protection task, the Agent end initializes, collects and calculates LocalServer file system information and data block information, namely relevant information of first file system data, and reports the information and a preset data comparison algorithm to the Server end.
Optionally, the data comparison algorithm may include: message digest algorithm fifth version MD 5.
In the embodiment of the invention, the difference between the LocalServer file system and the RemoteServer file system can be compared in a mode of MD5 verification.
S102, the Server compares the related information of the first file system data with the related information of the second file system data of the RemoteServer through a data comparison algorithm, and feeds back the comparison result to the Agent when the comparison result is that the related information of the first file system data is different from the related information of the second file system data.
Optionally, the method may further include: before the Server compares the related information of the first file system data with the related information of the second file system data, the Server configures a data synchronization directory, collects the related information of the second file system data, and fills the related information of the second file system data in the configured data synchronization directory;
the data synchronization directory is configured to list information of related data required to perform data synchronization.
In the embodiment of the invention, when the Server executes the data protection task, the Server initializes and configures the data synchronization directory, collects the relevant information of the second file system data of the RemoteServer, and fills the relevant information of the second file system data in the configuration data synchronization directory.
Optionally, the method may further include: before the Server compares the related information of the first file system data with the related information of the second file system data, the Server monitors the request information of the Agent, acquires the related information of the first file system data and a data comparison algorithm from the request information when the request information is monitored, and calls a configuration data synchronization directory to acquire the related information of the second file system data.
In the embodiment of the invention, after the Server terminal is initialized, the Server terminal can monitor the Agent request in real time, and when the request is monitored, the related information of the first file system data which needs data synchronization and a data comparison algorithm are obtained from the request information, and the related information (which can comprise the file system information and the data block information of the LocalServer) of the first file system data of the LocalServer collected by the Agent is compared with the related information (which can comprise the file system information and the data block information of the RemoteServer) of the second file system data one by one, if the two are different, the Server terminal feeds back the comparison result to the Agent.
Optionally, the method may further include:
and when the comparison result is that the related information of the first file system data is the same as the related information of the second file system data, the Server ignores the comparison result and does not perform the operation of feeding back the comparison result to the Agent.
In the embodiment of the invention, if the related information of the first file system data is the same as the related information of the second file system data, the Server does not operate, and continues to monitor the next request of the Agent.
S103, the Agent executes data synchronization between the LocalServer and the RemoteServer according to the comparison result.
Optionally, the method may further include: before the Agent executes data synchronization between the LocalServer and the RemoteServer according to the comparison result, the Agent transmits data blocks corresponding to different information in the related information of the first file system data and the related information of the second file system data to the Server so that the Server configures the file system space of the RemoteServer according to the data blocks.
In the embodiment of the invention, the Agent can transmit inconsistent data blocks to the Server end according to the comparison result information fed back by the Server end. The Server end can receive the data block returned by the Agent and write the data block into a file system of the RemoteServer.
Optionally, the executing, by the Agent, data synchronization between the LocalServer and the RemoteServer according to the comparison result includes:
after the Agent sends the data block to the Server, monitoring and acquiring first file system log journal information of the LocalServer in real time, and transmitting the first file system journal information to the Server;
the Server receives the journal information of the first file system, and plays back the data of the journal information of the first file system in the RemoteServer so as to synchronously copy the data of the journal information of the first file system and realize data synchronization between the LocalServer and the RemoteServer.
In the embodiment of the invention, the Agent monitors and acquires the file system journal (namely the information of the first file system journal) of the LocalServerr in real time and transmits the journal to the server end. The server acquires the journal data, plays back the journal data in the RemoteServer, and synchronously copies the data.
Optionally, the method may further include: the Agent maintains a first data table of data synchronization state and data change records of a file system of the LocalServer; the Server maintains a second data table of data synchronization status and data change records for the file system of the RemoteServer,
when network interruption occurs, the Agent and the Server respectively record data change from the network interruption initiation to the network recovery period into a first data table and a second data table;
and when the network is recovered, the Agent and the Server respectively carry out data synchronization according to the contents recorded in the first data table and the second data table.
In the embodiment of the invention, the processing of abnormal conditions can be realized, and both the Agent and the Server can maintain a data table about the synchronous state and the change record of the file system of the Agent, namely a first data table and a second data table; when network interruption occurs, the Agent and the Server can record data change from the interruption start to the network recovery time period, and when the network is recovered, the Agent and the Server can recover from errors only by comparing few data in the first data table and the second data table, so that the data recovery time is shortened.
Optionally, the method may further include: the data buffer and the data synchronization interval are preset.
In the embodiment of the invention, in order to reduce the load of the Agent terminal, a buffer area with a certain size can be reserved for data reporting and data sending and/or a data synchronization time interval can be set, so that the data synchronization time interval can be flexibly adjusted according to the actual situation.
According to the embodiment of the invention, the data of the file systems of the LocalServer and the RemoteServer are compared through the comparison of MD5 values, main calculation and comparison work is executed in the RemoteServer, and the performance influence on the LocalServer is reduced.
According to the scheme of the embodiment of the invention, the data files of the LocalServer and the RemoteServer are synchronized through the acquisition and playback of the data write log of the file system, and the log transmission is only needed, and the data write I/O (input/output) request is combined in an asynchronous mode, so that the network load is reduced, and the remote asynchronous copy of the file system can be realized in a low-quality network environment.
To achieve the purpose of the embodiment of the present invention, an embodiment of the present invention further provides a system 1 for implementing remote data synchronization of a file system, and when it needs to be described, any embodiment of the foregoing method embodiments is applicable to the embodiment of the system, and details are not repeated here. As shown in fig. 3, the system may include: a local Server LocalServer 11, a synchronous Agent 12, a remote Server RemoteServer 13 and a data protection Server 14;
the Agent 12 is deployed in the LocalServer and used for collecting relevant information of first file system data of the LocalServer and transmitting the relevant information of the first file system data and a preset data comparison algorithm to the Server;
the Server 13 is deployed in the RemoteServer and used for comparing the relevant information of the first file system data with the relevant information of the second file system data through a data comparison algorithm and feeding back the comparison result to the Agent when the comparison result is that the relevant information of the first file system data is different from the relevant information of the second file system data;
and the Agent 12 is also used for executing data synchronization between the LocalServer and the RemoteServer according to the comparison result.
The embodiment of the invention comprises the following steps: collecting relevant information of first file system data of a local Server LocalServer through a synchronization Agent deployed in the local Server LocalServer, and transmitting the relevant information of the first file system data and a preset data comparison algorithm to a data protection Server deployed in a remote Server RemoteServer; the Server compares the related information of the first file system data with the related information of the second file system data of the RemoteServer through a data comparison algorithm, and feeds back the comparison result to the Agent when the comparison result is that the related information of the first file system data is different from the related information of the second file system data; and the Agent executes data synchronization between the LocalServer and the RemoteServer according to the comparison result. By the scheme of the embodiment, remote protection of the file system data under a low-real-time and low-quality network is realized.
It will be understood by those of ordinary skill in the art that all or some of the steps of the methods, systems, functional modules/units in the devices disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. In a hardware implementation, the division between functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may be performed by several physical components in cooperation. Some or all of the components may be implemented as software executed by a processor, such as a digital signal processor or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). The term computer storage media includes volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as is well known to those of ordinary skill in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, Digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can accessed by a computer. In addition, communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media as known to those skilled in the art.
Claims (9)
1. A method for realizing remote data synchronization of a file system is characterized by comprising the following steps:
collecting relevant information of first file system data of a local Server LocalServer through a synchronization Agent deployed in the local Server LocalServer, and transmitting the relevant information of the first file system data and a preset data comparison algorithm to a data protection Server deployed in a remote Server RemoteServer;
the Server compares the related information of the first file system data with the related information of the second file system data of the RemoteServer through the data comparison algorithm, and feeds back the comparison result to the Agent when the comparison result is that the related information of the first file system data is different from the related information of the second file system data;
the Agent executes data synchronization between the LocalServer and the RemoteServer according to the comparison result;
before the Agent executes data synchronization between the LocalServer and the RemoteServer according to the comparison result, the Agent transmits a data block corresponding to different information in the related information of the first file system data and the related information of the second file system data to the Server so that the Server configures a file system space of the RemoteServer according to the data block.
2. The method for realizing remote data synchronization of the file system according to claim 1, wherein the Agent executing data synchronization between the LocalServer and the RemoteServer according to the comparison result comprises:
after the Agent sends the data block to the Server, monitoring and acquiring first file system log journal information of the LocalServer in real time, and transmitting the first file system journal information to the Server;
the Server receives the first file system journal information and plays back the data of the first file system journal information in the RemoteServer so as to synchronously copy the data of the first file system journal information and realize data synchronization between the LocalServer and the RemoteServer.
3. The method for implementing file system remote data synchronization according to claim 1, further comprising:
and when the comparison result is that the related information of the first file system data is the same as the related information of the second file system data, the Server ignores the comparison result and does not perform the operation of feeding back the comparison result to the Agent.
4. The method for implementing file system remote data synchronization according to claim 1, further comprising: before the Server compares the related information of the first file system data with the related information of the second file system data, the Server configures a data synchronization directory, collects the related information of the second file system data, and fills the related information of the second file system data in the configuration data synchronization directory;
the configuration data synchronization directory is used for listing information of related data needing data synchronization.
5. The method for implementing file system remote data synchronization according to claim 4, further comprising: before the Server compares the related information of the first file system data with the related information of the second file system data, the Server monitors the request information of the Agent, acquires the related information of the first file system data and the data comparison algorithm from the request information when the request information is monitored, and invokes the configuration data synchronization directory to acquire the related information of the second file system data.
6. The method for implementing file system remote data synchronization according to claim 1, further comprising:
the Agent maintains a first data table of data synchronization state and data change records of the file system of the LocalServer; the Server maintains a second data table of data synchronization status and data change records of the file system of the RemoteServer;
when network interruption occurs, the Agent and the Server respectively record data change from the beginning of the network interruption to the network recovery period into the first data table and the second data table;
and when the network is recovered, the Agent and the Server respectively carry out data synchronization according to the contents recorded in the first data table and the second data table.
7. The method for implementing remote data synchronization of file system according to any of claims 1-6,
the related information of the first file system data comprises: file system information and data block information of the LocalServer; the related information of the second file system data includes: and the file system information and the data block information of the RemoteServer.
8. The method for implementing file system remote data synchronization according to any one of claims 1 to 6, wherein the data comparison algorithm comprises: message digest algorithm fifth version MD 5.
9. A file system remote data synchronization implementation system, the system comprising: the system comprises a local Server LocalServer, a synchronous Agent, a remote Server RemoteServer and a data protection Server;
the Agent is deployed in the LocalServer and used for collecting relevant information of first file system data of the LocalServer and transmitting the relevant information of the first file system data and a preset data comparison algorithm to the Server;
the Server is deployed in the RemoteServer and used for comparing the related information of the first file system data with the related information of the second file system data through the data comparison algorithm and feeding back the comparison result to the Agent when the comparison result is that the related information of the first file system data is different from the related information of the second file system data;
the Agent is also used for executing data synchronization between the LocalServer and the RemoteServer according to the comparison result;
and the Agent is further used for transmitting a data block corresponding to different information in the related information of the first file system data and the related information of the second file system data to the Server before the Agent executes data synchronization between the LocalServer and the RemoteServer according to the comparison result, so that the Server configures a file system space of the RemoteServer according to the data block.
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