WO2021088254A1

WO2021088254A1 - Dual-stack access method, apparatus and device for user-mode network file system

Info

Publication number: WO2021088254A1
Application number: PCT/CN2020/073116
Authority: WO
Inventors: 臧林劼
Original assignee: 苏州浪潮智能科技有限公司
Priority date: 2019-11-07
Filing date: 2020-01-20
Publication date: 2021-05-14
Also published as: CN111225020B; CN111225020A

Abstract

A dual-stack access method for a user-mode network file system. The method comprises: using a first IP address of a client to establish a first connection with the client, and using a specified shared directory to provide an access service for the client by means of the first connection; when the first connection is broken, determining a second IP address of the client by means of an identifier field corresponding to the client; and using the second IP address to establish a second connection between the specified shared directory and the client. According to the method, a client is allowed to be connected to a server by means of a first IP address and a second IP address, and IP protocol version numbers of the two IP addresses are different. Therefore, when a first connection is interrupted, the second IP address of the client can be determined by using an identifier field, and a connection is re-established by using the second IP address. Further provided are a dual-stack access apparatus and device for a user-mode network file system, and a computer-readable storage medium, and same also have the beneficial effects.

Description

Double stack access method, device and equipment for user mode network file system

This application requires the priority of a Chinese patent application filed with the Chinese Patent Office, the application number is 201911083371.X, and the invention title is "A method, device and equipment for dual-stack access to a user-mode network file system" on November 7, 2019. The entire content is incorporated into this application by reference.

Technical field

The invention relates to the technical field of file systems, in particular to a user-mode network file system dual-stack access method, a user-mode network file system dual-stack access device, a user-mode network file system dual-stack access device and a computer-readable storage medium.

Background technique

NFS (Network File System) is the kernel network file system, which is one of the file systems supported by FreeBSD. It allows computers on the network to share resources through the TCP/IP network. When NFS is used, the local NFS-mounted client application can transparently read and write files on the remote NFS server, just like accessing local files. NFS-Ganesha is a user-mode network file system, which is an open source project. In the case of system service failure, it has better management and maintainability than the kernel-mode network file system, and user-mode NFS-Ganesha is easy to implement and maintain. Therefore, NFS-Ganesha, a large-scale distributed object storage for big data, has great application prospects. However, the server in the existing user-mode network file system allows only one IP address to access, and there is only one network connection between the server and a client, that is, only IPV4 address access or only IPV6 address access is allowed. When the client's network is connected, the server needs to be restarted to restore the network connection. The operation of restoring the network connection is complicated and costly. Therefore, the existing user-mode network file system has a problem that it is difficult to recover after a network connection failure.

Therefore, how to solve the problem that the existing user-mode network file system is difficult to recover after a network connection failure is a technical problem that needs to be solved by those skilled in the art.

Summary of the invention

In view of this, the purpose of the present invention is to provide a user-mode network file system dual-stack access method, a user-mode network file system dual-stack access device, a user-mode network file system dual-stack access device, and a computer-readable storage medium, which solves the problem The existing user-mode network file system has the problem that it is difficult to recover after a network connection failure.

To solve the above technical problems, the present invention provides a dual-stack access method for a user-mode network file system, including:

The first IP address of the client is used to establish a first connection with the client, and a designated shared directory is used to provide access services for the client through the first connection; wherein, the designated shared directory is in a mounting format and The shared directory corresponding to the IP protocol version of the first IP address;

When the first connection is disconnected, the second IP address of the client is determined by the identifier field corresponding to the client; wherein the IP protocol version of the first IP address and the second IP address are different ；

Using the second IP address to establish a second connection between the designated shared directory and the client.

Optionally, it also includes:

When receiving the failure information of the NFS file lock of the target file, analyze the failure information to determine the type of the NFS file lock failure; wherein, the target file is a file accessed by the client;

When the NFS file lock failure is a first type of failure, sending notification information to the client; wherein, the first type of failure is a failure caused by a server operation error;

When the NFS file lock failure is a second type of failure, the NFS file lock is released; wherein the second type of failure is a failure caused by the interruption of the connection with the client.

Optionally, it also includes:

When receiving the first NFS request sent by the client, acquiring the client serial ID of the client;

Use the client serial ID to generate the identifier id in the identifier field, and use the identifier id, the first IP address, and the second IP address to form the identifier field.

Optionally, said using the first IP address of the client to establish a first connection with the client, and using a designated shared directory to provide access services for the client through the first connection includes:

Acquiring the access request sent by the client through the first IP address, and determining the device specified by the access request in the designated shared directory;

The first connection between the client and the designated shared directory is established, and the first connection is used to provide the access service for the client.

Optionally, the determining the device specified by the access request in the specified shared directory includes:

Determine whether the device exists in the designated shared directory;

If not, mount the device to the designated shared directory according to the target mount format; wherein, the target mount format corresponds to the IP protocol version of the first IP address;

If yes, determine the device specified by the access request.

Optionally, the obtaining the access request sent by the client through the first IP address includes:

Establish a listening socket, use the listening socket to monitor each port, and obtain the access request sent by the client through the first IP address when the access request is monitored.

Optionally, the establishing the first connection between the client and the designated shared directory, and using the first connection to provide the access service for the client includes:

Creating a TCP socket of a target version, and using the TCP socket to connect the client and the designated shared directory; the target version corresponds to the IP protocol version of the first IP address;

The TCP socket is used to provide access services for the client.

Optionally, before the establishing a first connection with the client by using the first IP address of the client, the method further includes:

Add IPV6 configuration information to the configuration file and load the TI-RPC library.

Optionally, after adding IPV6 configuration information to the configuration file, it further includes:

Use the port setting function to set the IP address of each port; wherein, the IP address includes an IPV4 address and an IPV6 address;

The format of the IPV4 address is set to::ffff:a.b.c.d; where a.b.c.d is the original address of the IPV4 address.

Set and turn on the dual stack access switch.

Optionally, it also includes:

When an IP address check request is received, the IPV4 address and the IPV6 address are used to respond to the IP address check request.

The present invention also provides a dual-stack access device for a user-mode network file system, including:

The first connection module is configured to establish a first connection with the client by using the client's first IP address, and use a designated shared directory to provide access services for the client through the first connection; wherein, the designated share The directory is a shared directory whose mounting format corresponds to the IP protocol version of the first IP address;

The obtaining module is configured to determine the second IP address of the client through the identifier field corresponding to the client when the first connection is disconnected; wherein, the first IP address and the second IP address The version of the IP protocol is different;

The second connection module is configured to use the second IP address to establish a second connection between the designated shared directory and the client.

The present invention also provides a dual-stack access device for a user-mode network file system, including a memory and a processor, wherein:

The memory is used to store computer programs;

The processor is configured to execute the computer program to implement the above-mentioned dual-stack access method of the user mode network file system.

The present invention also provides a computer-readable storage medium for storing a computer program, wherein the computer program is executed by a processor to implement the above-mentioned user-mode network file system dual-stack access method.

The present invention provides a user-mode network file system dual-stack access method, which uses the first IP address of the client to establish a first connection with the client, and uses a designated shared directory to provide access services for the client through the first connection; The shared directory is a shared directory whose mounting format corresponds to the IP protocol version of the first IP address. When the first connection is disconnected, the second IP address of the client is determined by the identifier field corresponding to the client; wherein the IP protocol version of the first IP address and the second IP address are different; the second IP address is used to establish the designated shared directory The second connection with the client.

It can be seen that this method allows the client to connect to the server with the first IP address and the second IP address, and the IP protocol version numbers of the two IP addresses are different. Therefore, the client can first establish a first connection with the server using the first IP address, and obtain access services through the first connection. When the first connection established between the server and the client through the first IP address is interrupted, the identifier field can be used to determine the second IP address of the client, and the second IP address can be used to re-establish the network connection between the server and the client. The existing user-mode network file system has the problem that it is difficult to recover after a network connection failure.

In addition, the present invention also provides a user-mode network file system dual-stack access device, a user-mode network file system dual-stack access device, and a computer-readable storage medium, which also have the above-mentioned beneficial effects.

Description of the drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only It is an embodiment of the present invention. For those of ordinary skill in the art, without creative work, other drawings can be obtained according to the provided drawings.

FIG. 1 is a flowchart of a dual-stack access method for a user-mode network file system according to an embodiment of the present invention;

2 is a flowchart of a dual-stack setting method for a user-mode network file system according to an embodiment of the present invention;

FIG. 3 is a flowchart of obtaining an access service according to an embodiment of the present invention;

FIG. 4 is a method for recovering from a file lock failure according to an embodiment of the present invention;

5 is a schematic structural diagram of a dual-stack access device for a user-mode network file system according to an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a dual-stack access device for a user-mode network file system according to an embodiment of the present invention.

Detailed ways

In order to make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments It is only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

Please refer to FIG. 1, which is a flowchart of a dual-stack access method for a user-mode network file system according to an embodiment of the present invention. The method includes:

S101: Use the first IP address of the client to establish a first connection with the client, and use a designated shared directory to provide an access service for the client through the first connection.

In the user-mode network file system, the server provides access services for the client. Therefore, the method can be executed by the server. In the embodiment of the present invention, the client and the server are both Linux system platforms. The system type can be CentOS Linux release 7.2.1511. It should be noted that the client in the embodiment of the present invention is a client with the dual-stack access service mounted, and the server in the embodiment of the present invention is a server with the dual-stack access service mounted. Dual-stack access means to support both IPV4 and IPV6 protocols for access. Therefore, the client in the embodiment of the present invention can use the IPV4 address or the IPV6 address to connect to the server and obtain access services. The server in the embodiment of the present invention can use IPV4 The address or IPV6 address establishes a connection with the client and provides access services for the client.

The server uses the client's first IP address to establish a first connection with the client. The specific connection method and process are not limited in this embodiment. For example, it can monitor the connection port of the client. When it is monitored that the client is bound to the first IP address When the connection request is sent by the port, the first IP address of the client is used to establish a connection with the client; or the connection request sent by the client specifying the first IP address can be received. After receiving the connection request, use the The first IP address establishes a connection with the client. The first IP address can be an IPV4 address or an IPV6 address. The specific content is not limited in this embodiment. For example, when the first IP address is an IPV4 address, the first IP address can be 100.7.44.1; or when the first IP address is In the case of an IPV6 address, the first IP address can be fe80::20c:29ff::fe26:5f62.

After the server establishes the first connection with the client by using the first IP address, it can use the designated shared directory to provide access services for the client through the first connection. It should be noted that the designated shared directory is a shared directory whose mounting format corresponds to the IP protocol version of the first IP address. When the first IP address is an IPV4 address, the designated shared directory is a shared directory mounted in the IPV4 format; When the first IP address is an IPV6 address, the designated shared directory is the shared directory mounted in the IPV6 format. One or more devices are mounted in the specified shared directory, and the devices are used to store files and provide services for clients. By connecting the designated shared directory with the client through the first connection, the designated shared directory can be used to provide access services for the client through the first connection. There may be multiple types of access services, and the client can obtain corresponding access services according to its own needs and the instructions issued by the user to the client, which is not limited in this embodiment.

S102: When the first connection is disconnected, determine the second IP address of the client through the identifier field corresponding to the client.

In the embodiment of the present invention, the reason for the disconnection of the first connection is not limited. This step can be performed when the first connection is disconnected due to any situation or failure, for example, when the server switches from dual stack mode due to failure or other reasons When it comes to single-stack mode, for example, when the first connection is an IPV4 connection, and the server switches from dual-stack mode to IPV6 single-stack mode; or when the client switches from dual-stack mode to single-stack mode due to a failure or other reasons, for example, when the first connection is One connection is an IPV6 connection, and the client switches from the dual-stack mode to the IPV4 single-stack mode; or it may be the first connection disconnection caused by a network failure.

It should be noted that the IP protocol versions of the first IP address and the second IP address are different. When the first connection is disconnected, the second IP address of the client can be determined through the identifier field corresponding to the client. The identifier field is stored locally on the server and is used to manage and identify each client and its network address. The identifier field may include the client id and the corresponding first and second IP addresses, or may only include the first and second IP addresses corresponding to each other. Since there are multiple protocol versions of the user mode network file system, the identifier field can be different in different versions. For example, in the NFSv3 version of the protocol, the caller_name field can be used as the identifier field, and each client has the same value in the caller_name field. Save your own first IP address and second IP address to reconnect with the client in the event of a connection failure; or in the NFSv4 version of the protocol, you can use the clientid field as an identifier field, and use the clientid field to mark each client and Its corresponding first IP address and second IP address, in order to reconnect with the client in the event of a connection failure.

The construction process of the identifier field can be selected and adjusted according to the actual situation. For example, after the dual-stack protocol is mounted on the clients in the user-mode network file system, the first IP address and the second IP address of each client can be counted and combined. Enter the first IP address and the second IP address into the server to construct the identifier field; or after the dual-stack protocol is mounted on both the server and the client in the user-mode network file system, when each client sends an NFS request Use the IP address to count the first IP address and the second IP address corresponding to each client. Preferably, in this embodiment, in order to complete the identifier field as soon as possible, when the first NFS request sent by the client is received, the client sequence id of the client is obtained, and the client sequence id is used to generate the identifier id in the identifier field, and The identifier id, the first IP address, and the second IP address are used to form an identifier field corresponding to the client. The first NFS request can be any request, for example, it can be an identification request, that is, a request for matching an identifier field. The method for the server to obtain the client id of the client is not limited in this embodiment. The client id can be the sort id of the client in the entire distributed network file system, or it can be the MAC address information of the client and the generation of the identifier id. There can be multiple methods. For specific methods, please refer to related technologies, which will not be repeated here.

S103: Establish a second connection between the designated shared directory and the client by using the second IP address.

When the identifier field is used to determine the second IP address corresponding to the client, the second IP address can be used to re-establish a connection with the client, that is, the second IP address is used to establish a second connection between the specified shared directory and the client. After the second connection is established, the server can use the second connection to continue to provide access services for the client, or can perform other operations, which is not limited in this embodiment.

It should be noted that the method of using the second IP address to establish a second connection between the specified shared directory and the client is not limited. For example, the server can send a connection request to the second IP address and use it when the client receives the connection request. The second IP address establishes a second connection with the server, and the server can connect the specified shared directory to the client through the second connection; or it can wait for the connection request sent by the client using the second IP address, when the IP address of the connection request is detected When it is the second IP address, a second connection between the designated shared directory and the client is established.

The application of the dual-stack access method for the user-mode network file system provided by the embodiment of the present invention allows the client to use the first IP address and the second IP address to connect to the server, and the IP protocol version numbers of the two IP addresses are different. Therefore, the client can first establish a first connection with the server using the first IP address, and obtain access services through the first connection. When the first connection established between the server and the client through the first IP address is interrupted, the identifier field can be used to determine the second IP address of the client, and the second IP address can be used to re-establish the network connection between the server and the client. The method can recover the network connection problem between the server and the client without restarting the server, and solves the problem that the existing user-mode network file system is difficult to recover after a network connection failure.

Based on the above embodiments of the invention, since both the server and the client in the embodiment of the invention are devices that support dual-stack access services, the embodiment of the invention will explain a specific dual-stack setting method so that the client and the server can implement Dual-stack access service, please refer to FIG. 2 for details. FIG. 2 is a flowchart of a dual-stack setting method for a user-mode network file system according to an embodiment of the present invention, including:

S201: Add IPV6 information to the configuration file, and load the TI-RPC library.

Because most of the clients in the existing user-mode network file system obtain services with IPV4 addresses, and the servers mostly provide services with IPV4 addresses, it is necessary to add IPV6 configuration information to the server configuration file to enable it to support the IPV6 protocol. Of course, it is also necessary to configure the IPV6 configuration information in the client's configuration file to enable the client to support the IPV6 protocol. Specifically, enter in the configuration environment:

vim/etc/sysctl.conf

#net.ipv6.conf.all.disable_ipv6=1

net.ipv6.conf.all.disable_ipv6=0

net.ipv6.conf.default.disable_ipv6=0

net.ipv6.conf.lo.disable_ipv6=0

Among them, /etc/sysctl.conf is the configuration file. After entering the above content, you need to execute the sysctl-p command to enable the IPV6 protocol. Since the server portmap daemon is not compatible with IPV6, the TI-RPC library needs to be loaded to enable the rpcbind service.

S202: Use the port setting function to set the IP address of each port.

The port setting function is used to set the IP address corresponding to the port. Since both the server and the client support dual-stack access services, it is necessary to bind the IPV6 address to some ports on the server and each client, and bind them to other ports. IPV4 address. Specifically, the Bind_sockets_V4 function can be used to bind the IPV4 address and port, and the Bind_sockets_V6 function can be used to bind the IPV6 address and port.

S203: Set the format of the IPV4 address to ::ffff:a.b.c.d.

In order to prevent the server and client from malfunctioning in the dual-stack mode, the format of the server’s IPV4 address is set. The IPV4 address is set to 128 bits, the first 80 bits are set to 0, the middle 16 bits are set to ffff, and the last 32 bits are set to abcd, abcd is the original address of the IPV4 address. For example, when the original IPV4 address is 100.7.44.1, the IPV4 address after setting is::ffff:100.7.44.1. Correspondingly, it is also necessary to set the IPV4 address format of each client.

S204: Set and turn on the dual stack access switch.

In order for the server to support dual-stack access, a dual-stack access switch needs to be set. Specifically, adding the IPV6 switch field in the target configuration file can successfully set the dual-stack access switch. For example, adding the v6disable=false/true field in the target configuration file /etc/ganesha/ganesha.conf. When v6disable=false, the dual-stack access switch can be successfully set. The stack access access switch is turned on. Correspondingly, it is also necessary to set and turn on the dual-stack access switch for each client. After the configuration is completed, when an IP address view request is received, the IPV4 address and IPV6 address can be used to respond to the IP address view request.

Based on the above embodiments of the present invention, the embodiments of the present invention will specifically describe the process in which the client obtains access services from the server through the first connection. Please refer to FIG. 3, which is a flow chart for obtaining access services according to an embodiment of the present invention. include:

S301: Obtain the access request sent by the client through the first IP address, and determine the device specified by the access request in the designated shared directory.

The method for obtaining the access request is not limited in this embodiment. For example, the operation of obtaining the access request sent by the client through the first IP address may be performed in real time, and repeated execution when it is not obtained. Preferably, a listening socket can be established, and each port can be monitored by using the listening socket, and the access request sent by the client through the first IP address can be obtained when the access request is monitored. The port includes the port bound with the IPV4 address and the port bound with the IPV6 address. The IP address protocol version bound to the port that listens to the access request is the same as the IP protocol version of the first IP address.

After obtaining the access request, determine the designated shared directory, the designated shared directory is a shared directory with the mount format corresponding to the IP protocol version of the first IP address, and one or more devices are mounted in the designated shared directory, and in the designated shared directory Determine the device specified in the access request.

Further, in a possible implementation manner, the device specified by the access request does not exist in the specified shared directory. Therefore, before the device specified by the access request is determined, it can be determined whether the device specified by the access request exists in the execution shared directory. If it exists, determine the device specified by the access request; if it does not exist, mount the device specified by the access request to the specified shared directory according to the target mount format, which corresponds to the IP protocol version of the first IP address , That is, when the first IP address is an IPV4 address, the target mounting format is the IPV4 format; when the first IP address is the IPV6 version, the target mounting format is the IPV6 version.

S302: Establish a first connection between the client and the designated shared directory, and use the first connection to provide an access service for the client.

Specifically, a TCP socket of the target version can be created, and the TCP socket is used to connect the client and the designated shared directory, that is, the TCP socket is used as the first connection. Among them, the target version corresponds to the IP protocol version of the first IP address, that is, when the first IP address is an IPV4 address, the target version should be the TCP4 version; when the first IP address is an IPV6 address, the target version should be the TCP6 version . After the TCP socket is created, the TCP socket is used to provide access services for the client.

Based on the above embodiment of the invention, in a possible situation, a file lock failure occurs when the client accesses a file through the server. The embodiment of the invention will describe a method for recovering a file lock failure. For details, refer to Figure 4 , Figure 4 is a file lock failure recovery method provided by an embodiment of the present invention, including:

S401: When receiving the failure information of the NFS file lock of the target file, analyze the failure information to determine the type of the NFS file lock failure.

Among them, the target file is the file accessed by the client. When the client accesses the file, it can be opened in read mode or in write mode. No matter the client accesses the target file in any mode, when the NFS file lock of the target file fails, the server Both will receive the failure information of the NFS file lock of the target file, and the failure information may be a notify notification message. When the failure information of the NFS file lock of the target file is received, the failure information is analyzed to determine the type of the NFS file lock failure of the target file. This embodiment does not limit the specific determination method, and can refer to related technologies, which will not be repeated here.

S402: When the NFS file lock failure is the first type of failure, send notification information to the client.

It should be noted that the first type of failure is the failure caused by the server operation error, that is, the server operation error causes the NFS file lock of the target file to fail. At this time, a notification message needs to be sent to the client so that the client can reapply for the authorized lock for the target file, that is, the NFS file lock of the target file. Specifically, when the client reapplies for an authorized lock, the identifier field needs to be used to determine the identity of the applying client. When the applying client is a client that previously accessed the target file, it is allowed to continue to access the file.

S403: When the NFS file lock failure is the second type of failure, release the NFS file lock.

It should be noted that the second type of failure is the failure caused by the connection terminal with the client, that is, the NFS file lock failure caused by the disconnection of the connection between the server and the client. At this time, you can release the authorized lock, that is, release the NFS file lock of the target file. After the NFS file lock is released, other operations can be performed, and the specific content is not limited in this embodiment.

By applying the dual-stack access method for a user-mode network file system provided by the embodiment of the present invention, the fault type can be determined when the NFS file lock fails, and corresponding measures can be taken to recover from the fault, so as to avoid the user-mode network file system from causing files due to the NFS file lock failure. Open issues such as conflicts.

The following describes the user-mode network file system dual-stack access device provided by the embodiment of the present invention. The user-mode network file system dual-stack access device described below and the above-described user-mode network file system dual-stack access method can be referred to each other.

Please refer to FIG. 5, which is a schematic structural diagram of a dual-stack access device for a user-mode network file system according to an embodiment of the present invention, including:

The first connection module 510 is configured to establish a first connection with the client by using the first IP address of the client, and use the designated shared directory to provide access services for the client through the first connection; wherein the designated shared directory is the mount format and the first connection A shared directory corresponding to the IP protocol version of the IP address;

The obtaining module 520 is configured to determine the second IP address of the client through the identifier field corresponding to the client when the first connection is disconnected; wherein the IP protocol version of the first IP address and the second IP address are different;

The second connection module 530 is configured to use the second IP address to establish a second connection between the designated shared directory and the client.

Optionally, it also includes:

The fault type determination module is used to analyze the fault information when receiving the fault information of the NFS file lock of the target file to determine the type of the NFS file lock fault; where the target file is the file accessed by the client;

The first recovery module is used to send notification information to the client when the NFS file lock failure is the first type of failure; where the first type of failure is a failure caused by a server operation error;

The second recovery module is used to release the NFS file lock when the NFS file lock failure is the second type of failure; where the second type of failure is the failure caused by the interruption of the connection with the client.

Optionally, it also includes:

The serial ID acquisition module is used to acquire the client serial ID of the client when the first NFS request sent by the client is received;

The identifier field generating module is used to generate the identifier id in the identifier field using the client serial ID, and use the identifier id, the first IP address and the second IP address to form the identifier field.

Optionally, the first connection module 510 includes:

The determining unit is used to obtain the access request sent by the client through the first IP address, and determine the device specified by the access request in the designated shared directory;

The service unit is used to establish a first connection between the client and the designated shared directory, and use the first connection to provide access services for the client.

Optionally, the determining unit includes:

The judging subunit is used to judge whether there is a device in the specified shared directory;

The mounting subunit is used to mount the device in the designated shared directory according to the target mounting format if the device does not exist in the designated shared directory; wherein, the target mounting format corresponds to the IP protocol version of the first IP address;

The determining subunit is used to determine the device specified by the access request if there is a device in the specified shared directory.

Optionally, the determining unit includes:

The monitoring subunit is used to establish a monitoring socket, use the monitoring socket to monitor each port, and obtain the access request sent by the client through the first IP address when the access request is monitored.

Optionally, the service unit includes:

The socket creation subunit is used to create the target version of the TCP socket, use the TCP socket to connect the client and specify the shared directory; the target version corresponds to the IP protocol version of the first IP address;

The service subunit is used to provide access services for the client by using the TCP socket.

Optionally, it also includes:

The configuration module is used to add IPV6 configuration information to the configuration file and load the TI-RPC library.

Optionally, it also includes:

The address setting module is used to set the IP address of each port by using the port setting function; among them, the IP address includes the IPV4 address and the IPV6 address;

The format modification module is used to set the format of the IPV4 address to ::ffff:a.b.c.d; where a.b.c.d is the original address of the IPV4 address.

Optionally, it also includes:

The dual-stack switch setting module is used to set and turn on the dual-stack access switch.

Optionally, it also includes:

The request response module is used to respond to the IP address check request with the IPV4 address and the IPV6 address when the IP address check request is received.

Please refer to FIG. 6, which is a schematic structural diagram of a dual-stack access device for a user-mode network file system according to an embodiment of the present invention. The dual-stack access device for a user-mode network file system includes a memory and a processor, wherein:

The memory 610 is used to store computer programs;

The processor 620 is configured to execute a computer program to implement the aforementioned dual-stack access method for a user-mode network file system.

The computer-readable storage medium provided by the embodiment of the present invention will be introduced below. The computer-readable storage medium described below and the user-mode network file system dual-stack access method described above can be referenced correspondingly.

The present invention also provides a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the steps of the above-mentioned dual-stack access method for a user-mode network file system are realized.

The computer-readable storage medium may include: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk, etc., which can store program codes Medium.

The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the description of the method part.

Professionals may further realize that the units and algorithm steps of the examples described in the embodiments disclosed in this article can be implemented by electronic hardware, computer software, or a combination of the two, in order to clearly illustrate the possibilities of hardware and software. Interchangeability, in the above description, the composition and steps of each example have been generally described in accordance with the function. Whether these functions are implemented in hardware or software depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered as going beyond the scope of the present invention.

The steps of the method or algorithm described in combination with the embodiments disclosed in this document can be directly implemented by hardware, a software module executed by a processor, or a combination of the two. The software module can be placed in random access memory (RAM), internal memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disks, removable disks, CD-ROMs, or all areas in the technical field. Any other known storage media.

Finally, it should be noted that in this article, relationships such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply these entities. Or there is any such actual relationship or sequence between operations. Moreover, the terms "include", "include" or any other variants are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes those that are not explicitly listed. Other elements, or also include elements inherent to this process, method, article, or equipment.

The above provides a detailed introduction to a user-mode network file system dual-stack access method, a user-mode network file system dual-stack access device, a user-mode network file system dual-stack access device, and a computer-readable storage medium provided by the present invention. Specific examples are used to illustrate the principle and implementation of the present invention. The description of the above examples is only used to help understand the method and core idea of the present invention; at the same time, for those of ordinary skill in the art, according to the idea of the present invention There will be changes in the specific implementation and the scope of application. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

A dual-stack access method for a user-mode network file system is characterized in that it includes:

The first IP address of the client is used to establish a first connection with the client, and a designated shared directory is used to provide access services for the client through the first connection; wherein, the designated shared directory is in a mounting format and The shared directory corresponding to the IP protocol version of the first IP address;

When the first connection is disconnected, the second IP address of the client is determined by the identifier field corresponding to the client; wherein the IP protocol version of the first IP address and the second IP address are different ；

Using the second IP address to establish a second connection between the designated shared directory and the client.
The dual-stack access method for a user-mode network file system according to claim 1, further comprising:

When receiving the failure information of the NFS file lock of the target file, analyze the failure information to determine the type of the NFS file lock failure; wherein, the target file is a file accessed by the client;

When the NFS file lock failure is a first type of failure, sending notification information to the client; wherein, the first type of failure is a failure caused by a server operation error;

When the NFS file lock failure is a second type of failure, the NFS file lock is released; wherein the second type of failure is a failure caused by the interruption of the connection with the client.
The dual-stack access method for a user-mode network file system according to claim 1, wherein before the first connection is established with the client by using the first IP address of the client, the method further comprises:

When receiving the first NFS request sent by the client, acquiring the client serial ID of the client;

Use the client serial ID to generate the identifier id in the identifier field, and use the identifier id, the first IP address, and the second IP address to form the identifier field.
The user-mode network file system dual-stack access method according to claim 1, wherein the first IP address of the client is used to establish a first connection with the client, and a designated shared directory is used to pass the first connection with the client. The connection provides access services for the client, including:

Acquiring the access request sent by the client through the first IP address, and determining the device specified by the access request in the designated shared directory;

The first connection between the client and the designated shared directory is established, and the first connection is used to provide the access service for the client.
The dual-stack access method for a user-mode network file system according to claim 4, wherein the determining the device specified by the access request in the specified shared directory comprises:

Determine whether the device exists in the designated shared directory;

If not, mount the device to the designated shared directory according to the target mount format; wherein, the target mount format corresponds to the IP protocol version of the first IP address;

If yes, determine the device specified by the access request.
The dual-stack access method for a user-mode network file system according to claim 5, wherein said obtaining an access request sent by said client through said first IP address comprises:

Establish a listening socket, use the listening socket to monitor each port, and obtain the access request sent by the client through the first IP address when the access request is monitored.
The user-mode network file system dual-stack access method according to claim 6, wherein the establishing the first connection between the client and the designated shared directory is using the first connection as The client providing the access service includes:

Creating a TCP socket of a target version, and using the TCP socket to connect the client and the designated shared directory; the target version corresponds to the IP protocol version of the first IP address;

The TCP socket is used to provide access services for the client.
The dual-stack access method for a user-mode network file system according to claim 1, wherein before the first connection is established with the client by using the first IP address of the client, the method further comprises:

Add IPV6 configuration information to the configuration file and load the TI-RPC library.
The dual-stack access method for a user-mode network file system according to claim 8, wherein after adding IPV6 configuration information to the configuration file, the method further comprises:

Use the port setting function to set the IP address of each port; wherein, the IP address includes an IPV4 address and an IPV6 address;

The format of the IPV4 address is set to::ffff:a.b.c.d; where a.b.c.d is the original address of the IPV4 address.
The dual-stack access method for a user-mode network file system according to claim 9, characterized in that, before the first IP address of the client is used to establish a first connection with the client, the method further comprises:

Set and turn on the dual stack access switch.
The dual-stack access method for a user-mode network file system according to claim 10, further comprising:

When an IP address check request is received, the IPV4 address and the IPV6 address are used to respond to the IP address check request.
A dual-stack access device for a user-mode network file system, which is characterized in that it comprises:

The first connection module is configured to establish a first connection with the client by using the client's first IP address, and use a designated shared directory to provide access services for the client through the first connection; wherein, the designated share The directory is a shared directory whose mounting format corresponds to the IP protocol version of the first IP address;

The obtaining module is configured to determine the second IP address of the client through the identifier field corresponding to the client when the first connection is disconnected; wherein, the first IP address and the second IP address The version of the IP protocol is different;

The second connection module is configured to use the second IP address to establish a second connection between the designated shared directory and the client.
A dual-stack access device for a user-mode network file system, which is characterized by comprising a memory and a processor, wherein:

The memory is used to store computer programs;

The processor is configured to execute the computer program to implement the user-mode network file system dual-stack access method according to any one of claims 1 to 11.
A computer-readable storage medium, characterized in that it is used to store a computer program, wherein the computer program is executed by a processor to realize the user-mode network file system dual-stack access according to any one of claims 1 to 11 method.