CN106790420B - A kind of more session channel method for building up and system - Google Patents

Abstract

Embodiments of the present invention provide a method and system for establishing a multi-session channel, which relate to the communication field and are used to solve the problem of low throughput of network transmission bandwidth between nodes and clients caused by the limitation of the number of node network cards in the prior art. Including: the source node receives the first query message sent by the client; the source node sends the network card information of at least one network card included in each node to the client; the target node establishes the target node and In the session channel between clients, the target node is the node where the target network card is located, and the target network card is the network card selected by the client from at least one network card included in each node according to the network card information of the at least one network card included in each node. The embodiment of the present invention is applied to a node failover scenario in a cluster system.

Description

A method and system for establishing a multi-session channel

technical field

The embodiments of the present invention relate to the communication field, and in particular to a method and system for establishing a multi-session channel.

Background technique

SMB (Server Message Block, service message block) protocol (for example, SMB3.0 protocol) is mainly used for sharing files, printers, serial ports, etc. between computers. A typical application network of SMB is shown in Figure 1a.

The MutilChannel (multi-session channel) feature is a newly added feature of the SMB3.0 protocol. Through the MutilChannel feature, a session channel can be established between the client and multiple network cards of a node through multiple TCP connections at the same time to implement a node. In the event of a single NIC failure, the services of the client and the node are not interrupted. Specifically as follows: as shown in Figure 1b, a network card 1011 of the client 101 (including a plurality of network cards, for example, network card 1011 and network card 1012) establishes a TCP connection through the switch 102 and a network card 1031 of the node 103 after the link is established and the session is successfully created , forming a conversation channel (such as the conversation channel 105 in Fig. 1b) for business interaction; then the client 101 sends an instruction message for querying the relevant network card information of the node 103 to the node 103, and the client 101 receives the response message sent by the node 103 , the response message includes all available network card information on the node 103; the client 101 establishes a new TCP connection through other network cards on it (for example, network card 1012) and the network card information fed back by the node 103, and establishes a new TCP connection based on the network card 1011 and the network card 1031 After the ID of the session created during the TCP connection is re-authenticated, a new session channel is formed, such as the session channel 106 formed between the network card 1012 and the network card 1032 in FIG. 1c.

However, due to the limited actual capability of a single network card, the throughput of the bandwidth transmitted by the node and the client network will be limited by the number of network cards of the node. The limit bandwidth is also less.

Contents of the invention

Embodiments of the present invention provide a method and system for establishing a multi-session channel to solve the problem of low throughput of network transmission bandwidth between nodes and clients caused by the limitation of the number of network cards of a single node in the prior art.

In order to achieve the above object, embodiments of the present invention adopt the following technical solutions:

In a first aspect, an embodiment of the present invention provides a method for establishing a multi-session channel. The method is applied in a cluster system, and the cluster system includes a client and at least two nodes, wherein each of the at least two nodes includes at least one Network card, the method provided by the embodiment of the present invention includes: the source node receives the first query message sent by the client to instruct the source node to query the network card information of at least one network card included in each node; the source node is at least two nodes with The node where the client communicates; the source node stores the network card information of at least one network card included in each node; the source node sends the network card information of at least one network card included in each node to the client; the target node according to the connection sent by the client Create a request, establish a session channel between the target node and the client through the target network card, the target node is the node where the target network card is located, and the target network card is the one included by the client from each node according to the network card information of at least one network card included in each node The network card selected in At least one network card.

An embodiment of the present invention provides a method for establishing a multi-session channel. The source node receives the first query message sent by the client to instruct the source node to query the network card information of at least one network card included in each node; the source node is at least two The node that communicates with the client in the node; the network card information of at least one network card included in each node is stored in the source node; the source node sends the network card information of at least one network card included in each node to the client; the target node according to the client The connection establishment request sent is to establish a session channel between the target node and the client through the target network card. The target node is the node where the target network card is located, and the target network card is the client according to the network card information of at least one network card included in each node. A network card selected from at least one network card included in the node. Since the actual capacity of a single network card is limited, if the number of network cards is small, the number of session channels established between the client and the node will be fewer, and the limit bandwidth that can be transmitted between the client and the cluster system will be less; Conversely, the more network cards, the more total bandwidth can be provided. Therefore, when the client uses the MutilChannel feature to access the business of the cluster, it can communicate with multiple nodes in the cluster system (for example, the source node and the target node). Establish a session channel, such as establishing a session channel between the source node and the client network card, and establishing a session channel between the target network card and the client network card, which can improve the throughput of the network transmission bandwidth between the cluster system and the client. At the same time, if the source node fails, the client can select a normal node (for example, the target node) and perform business transmission according to the session channel established with the target network card of the target node, so as to ensure that the business between the client and the cluster system continues uninterrupted Interruption greatly improves the external performance of the entire system.

With reference to the first aspect, in a first possible implementation manner of the first aspect, before the source node sends the network card information of at least one network card included in each node to the client, the method provided by the embodiment of the present invention includes: the source node Receive the first broadcast message including the network card information of at least one network card included in the node sent by each node except the source node in the cluster system; the source node will include the network card information of at least one network card included in the source node and the cluster system Network card information of at least one network card included in each node other than the source node is stored in the source node. In this way, when the source node receives the first query message sent by the client, it can timely feed back the network card information of each node in the cluster system to the client for selection by the client.

With reference to the first aspect or the first possible implementation of the first aspect, in the second possible implementation of the first aspect, the connection establishment request includes a user name and a user password; Create a request to establish a session channel between the target node and the client through the target network card, including: the target node verifies the user name and user password sent by the client; after confirming that the user name matches the preset user name, and the user password After matching with the preset user password, the target node establishes a session channel between the target node and the client through the target network card. By establishing a session channel between the target node and the client, when the source node fails, the client can perform service transmission with the cluster system according to the session channel established with the target node, so that the service transmission is not interrupted.

In combination with the first aspect to the second possible implementation of the first aspect, in the third possible implementation of the first aspect, the connection establishment request includes a session identifier and a flag bit, and the session identifier is used to uniquely identify the first A session information, the first session information is generated when the session channel between the source node and the client is established, and the flag bit is used to indicate the re-authentication of the session channel established between the source node and the client; the source node receives the client Before the first query message sent by the client, the method provided by the embodiment of the present invention further includes: the source node sends the session identifier to the client; correspondingly, after the target node establishes a session channel between the target node and the client through the target network card, the The method provided by the embodiment of the invention includes: the target node parses the session identifier to determine the identifier of the source node that generates the first session information; the target node sends a first request message to the source node to obtain the first session information indicated by the session identifier from the source node. A session information; the target node binds the second session channel with the first session information according to the flag bit, and the second session channel is a session channel between the target node and the client established by the target node through the target network card. In this way, the mapping between the first session information and multiple session channels can be realized. When the client accesses the same folder in the node through the multiple session channels corresponding to the first session information, the same TREE information will be generated. Can make business uninterrupted.

In combination with the first aspect to the third possible implementation of the first aspect, in the fourth possible implementation of the first aspect, after the source node sends the network card information of at least one network card included in each node to the client The method provided by the embodiment of the present invention further includes: the source node sends a handle identifier for uniquely identifying the file handle information to the client; the source node backs up the file handle information to the first node, and the first node is at least two nodes with the same A node corresponding to the source node; correspondingly, after the target node establishes a session channel between the target node and the client through the target network card according to the connection establishment request sent by the client, the method provided by the embodiment of the present invention further includes: at the source node When a failure occurs, the target node receives the first data access request message sent by the client and carries a handle identifier for uniquely identifying the file handle information; the target node obtains the file handle information according to the handle identifier. In this way, when the source node fails, the target node can obtain the file handle information of the target file requested by the client according to the first data access request message of the client, and perform normal read or write operations on the target file according to the file handle information , so that the business (read data operation/write data operation) between the client and the cluster system will not be interrupted due to the failure of the source node.

Combining the first aspect to the fourth possible implementation of the first aspect, in the fifth possible implementation of the first aspect, the handle identifier includes the identifier of the node that generates the file handle information; the target node obtains the file according to the handle identifier Handle information, including: the target node inquires whether there is file handle information locally according to the handle ID; when the target node determines that the file handle information is not saved locally, the target node analyzes the handle ID to determine the file handle indicated by the handle ID The source node of the information; when it is determined that the source node is faulty, the target node acquires the file handle information indicated by the handle identifier from the first node.

In combination with any possible implementation of the first aspect to the fourth possible implementation of the first aspect, in the fifth possible implementation of the first aspect, the source node sends the file handle information to the first node Previously, the method provided by the embodiment of the present invention further includes: the source node determines the first node corresponding to the source node from at least two nodes, and by determining the first node used to store the backup file handle information, when the source node fails , the first node provides file handle information according to the handle identifier sent by the client.

In combination with any possible implementation manner of the first aspect to the fifth possible implementation manner of the first aspect, in a sixth possible implementation manner of the first aspect, the source node determines the source node from at least two nodes The corresponding first node includes: the source node obtains the node information of the other nodes except the source node among the at least two nodes; according to the node information of the other nodes except the source node among the at least two nodes, according to the preset rules , determining the identifier of the first node from at least one node; determining the first node according to the identifier of the first node.

In a second aspect, an embodiment of the present invention provides a multi-session channel method, the method is applied in a cluster system, and the cluster system includes a client and at least two nodes, wherein the client includes at least two network cards, and each node includes At least one network card, the method provided by the embodiment of the present invention includes: the client sends to the source node a first query message for instructing the source node to query the network card information of at least one network card included in each of the at least two nodes; the client receives The first response message sent by the source node including the network card information of at least one network card included in each of the at least two nodes; the client sends a connection establishment request to the switch through the target network card, so that the switch forwards the connection establishment request according to the target network card To the target node where the target network card is located, so that the target node establishes a session channel with the client through the target network card.

With reference to the second aspect, in a first possible implementation manner of the second aspect, the connection establishment request includes a user name and a user password.

With reference to the second aspect or the first possible implementation of the second aspect, in the second possible implementation of the second aspect, the client receives the session identifier sent by the source node for uniquely identifying the first session information, Wherein, the source node is a node communicating with the client among at least two nodes.

In combination with any possible implementation manner of the second aspect to the second possible implementation manner of the second aspect, in the third possible implementation manner of the second aspect, the client sends the connection establishment to the switch through the target network card After the request, the method provided by the embodiment of the present invention further includes: after the client determines that the service with the source node is interrupted, the client sends to the target node a first data access request carrying a handle identifier for uniquely identifying file handle information information.

In a third aspect, an embodiment of the present invention provides a cluster system, the cluster system includes a client and at least two nodes, wherein the client includes at least two network cards, each of the at least two nodes includes at least one network card, and the client At least two network cards at the end are used to establish a session channel with at least one network card of each node, wherein the source node is used to receive the first message sent by the client for instructing the source node to query the network card information of at least one network card included in each node Query message; the source node is a node communicating with the client among at least two nodes; the source node stores at least one network card information of each node included; and is used to send at least one network card included in each node to the client The network card information of the network card; the target node is used to establish a session channel between the target node and the client through the target network card according to the connection establishment request sent by the client. The network card information of at least one network card included in each node is a network card selected from the at least one network card included in each node.

With reference to the third aspect, in a first possible implementation of the third aspect, the source node is further configured to: receive a first broadcast message sent by each node in the cluster system except the source node; the first broadcast message Including the network card information of at least one network card included in the node; and storing the network card information of at least one network card included in the source node and the network card information of at least one network card included in each node in the cluster system except the source node in the source in the node.

In combination with the third aspect or the first possible implementation of the third aspect, in the second possible implementation of the third aspect, the above-mentioned connection establishment request includes a user name and a user password, and the target node is specifically used for: Verify the user name and user password sent by the client; and after determining that the user name matches the preset user name and the user password matches the preset user password, establish a connection between the target node and the client through the target network card conversation channel between.

Combining the third aspect to the second possible implementation of the third aspect, in the third possible implementation of the third aspect, the connection establishment request further includes a session identifier and a flag bit, and the session identifier is used for unique Identify the first session information, which is generated when the session channel established between the source node and the client is established; the flag bit is used to indicate the re-authentication of the session channel established between the source node and the client; the source node , is also used to send the session identifier to the client; the target node is also used to: parse the session identifier to determine the identifier of the source node that generates the first session information; and send the first request message to the source node to obtain the The node acquires the first session information indicated by the session identifier, and the first request message carries the session identifier; and is used to bind the second session channel with the first session information according to the flag bit, and the second session channel is the target node through The session channel between the target node and the client established by the target NIC.

In combination with the third aspect to the third possible implementation manner of the third aspect, in the fourth possible implementation manner of the third aspect, the target node is further configured to: receive the file handle sent by the client carrying the file handle used for unique identification The first data access request message of the handle identifier of the information; and used for obtaining the file handle information according to the handle identifier.

Combining the third aspect to the fourth possible implementation of the third aspect, in the fifth possible implementation of the third aspect, the target node is specifically used to: query locally according to the handle identifier whether the file handle information is saved ; and when the target node determines that the file handle information is not saved in the target node, the target node analyzes the handle identifier to determine the source node that generates the file handle information indicated by the handle identifier; and is used when determining that the source node is faulty , the target node obtains the file handle information indicated by the handle identifier from the first node corresponding to the source node.

In combination with the third aspect to the fifth possible implementation manner of the third aspect, in the sixth possible implementation manner of the third aspect, the source node is further configured to: send to the client the information used to uniquely identify the file handle information handle identifier; and used to send file handle information to the first node.

In combination with the third aspect to the fifth possible implementation manner of the third aspect, in the sixth possible implementation manner of the third aspect, the source node is further specifically configured to: acquire at least two nodes other than the source node node information of the remaining nodes; and for determining the identity of the first node from at least one node according to preset rules according to the node information of the remaining nodes of the at least two nodes except the source node; and for determining the identity of the first node according to the first node An identification of a node identifies the first node.

In a fourth aspect, an embodiment of the present invention provides a client, the client is applied in a cluster system, and the cluster system further includes at least two nodes, wherein the client includes at least two network cards, and each node includes at least one network card, The at least two network cards of the client are used to establish a session channel with at least one network card of each node, wherein the client is used to send to the source node the first Query message; the client receives the network card information of at least one network card included in each node sent by the source node; the client sends a connection establishment request to the switch through the target network card, so that the switch forwards the connection establishment request to the target network card according to the target network card. target node.

With reference to the fourth aspect, in a first possible implementation manner of the fourth aspect, the connection establishment request includes a user name and a user password.

With reference to the fourth aspect or the first possible implementation of the fourth aspect, in a second possible implementation of the fourth aspect, the client is configured to receive the session information sent by the source node and used to uniquely identify the first session information identification, wherein the source node is the node that communicates with the client among the at least two nodes.

In combination with any possible implementation of the fourth aspect to the second possible implementation of the fourth aspect, in the third possible implementation of the fourth aspect, the client sends the connection establishment to the switch through the target network card After the request, the client provided by the embodiment of the present invention is further configured to: after determining that the service with the source node is interrupted, send to the target node a first data access request message carrying a handle identifier for uniquely identifying file handle information.

In the fifth aspect, the embodiment of the present invention provides a source node, the source node is applied in a cluster system, and the source node includes: a first receiving unit, configured to receive a message sent by a client to instruct the source node to query each A first query message of the network card information of at least one network card included in the node; a first sending unit configured to send the network card information of the at least one network card included in each node to the client.

With reference to the fifth aspect, in the first possible implementation manner of the fifth aspect, the source node provided in the embodiment of the present invention further includes: a second receiving unit, configured to receive each node in the cluster system except the source node The first broadcast message sent, the first broadcast message includes the network card information of at least one network card included in the node; the storage unit is used to store the network card information of the at least one network card included in the source node and the information of the network card in the cluster system except the source node Network card information of at least one network card included in each node is stored in the source node.

With reference to the fifth aspect or the first possible implementation manner of the fifth aspect, in a second possible implementation manner of the fifth aspect, the source node provided in this embodiment of the present invention further includes: a determining unit configured to obtain from at least two Among the nodes, determine the first node corresponding to the source node.

In combination with any possible implementation manner of the fifth aspect to the second possible implementation manner of the fifth aspect, in a third possible implementation manner of the fifth aspect, the determining unit in the embodiment of the present invention includes: The obtaining module is used to obtain the node information of the other nodes except the source node in the at least two nodes; the first determination module is used to follow the preset A rule is set to determine the identity of the first node from at least two nodes; the second determining module is configured to determine the first node according to the identity of the first node.

With reference to any possible implementation manner of the fifth aspect to the third possible implementation manner of the fifth aspect, in a fourth possible implementation manner of the fifth aspect, the source node further includes a fourth sending unit configured to The first broadcast message including the node information of the source node is sent to each node of the cluster system; the second receiving unit is configured to receive the node information of each node.

In a sixth aspect, an embodiment of the present invention provides a source node, the source node includes a processor, a memory, and a communication bus, the processor and the memory are connected through the communication bus, the memory is used to store software programs and modules, and the processor is used to Run the software program and the module to execute: send the session identifier for uniquely identifying the first session information to the client; receive the first query message sent by the client to instruct the source node to query the node information of each node; send the client The end sends a first response message including at least node information of each node.

In the seventh aspect, the embodiment of the present invention provides a target node, the target node includes: a first receiving unit, configured to receive a connection establishment request sent by a client; an establishment unit, configured to, according to the connection establishment request sent by the client, through The target network card establishes a session channel between the target node and the client.

With reference to the seventh aspect or the first possible implementation of the seventh aspect, in a second possible implementation of the seventh aspect, the second receiving unit is configured to receive the first The data access request message is an acquisition unit, configured to acquire the file handle information indicated by the handle identifier according to the handle identifier.

In combination with any possible implementation manner of the seventh aspect to the second possible implementation manner of the seventh aspect, in a third possible implementation manner of the seventh aspect, the acquisition unit includes: a judging module configured to The handle identification is locally queried whether to save the file handle information; the first acquisition module is used to obtain the file handle information from the memory of the target node after the judgment module determines that the file handle information is stored in the target node; the first parsing module uses After the judging module determines that there is no file handle information in the target node, the handle identifier is parsed to determine the source node that generates the indicated file handle information of the handle identifier; the acquisition module is used to determine that the source node fails, and the target node from The file handle information indicated by the handle identifier is obtained from the first node, where the first node is a node corresponding to the source node among the at least two nodes.

In combination with any possible implementation of the seventh aspect to the third possible implementation of the seventh aspect, in the fourth possible implementation of the seventh aspect, the connection establishment request includes a user name and a user password, and the establishment The unit includes: a verification unit, which is used to verify the user name and user password sent by the client, and establishes a module for determining that the user name matches the preset user name, and the user password matches the preset user password Afterwards, a session channel between the target node and the client is established through the target network card.

With reference to any possible implementation manner of the seventh aspect to the fourth possible implementation manner of the seventh aspect, in the fifth possible implementation manner of the seventh aspect, the connection establishment request includes a session identifier and a flag bit, The session identifier is used to uniquely identify the first session information, which is generated when the session channel between the source node and the client is established, and the flag bit is used to indicate the establishment of the session channel between the source node and the client The re-authentication; the target node also includes: a parsing unit for parsing the session identifier to determine the identifier of the source node that generates the first session information; a sending unit for sending the first request message to the source node to obtain from the source node Obtain the first session information indicated by the session identifier; the mapping unit is used to bind the second session channel with the first session information according to the flag bit, and the second session channel is the target node and the client established by the target node through the target network card conversation channel between.

In an eighth aspect, an embodiment of the present invention provides a target node, including: a processor, a memory, and a communication bus, the processor and the memory are connected through the communication bus, the memory is used to store software programs and modules, and the processor is used to run software The program and the module are executed: for establishing a session channel between the target node and the client through the target network card according to the connection establishment request sent by the client.

In the ninth aspect, the embodiment of the present invention provides a node, including: a first receiving unit, configured to receive file handle information sent by a source node, and a saving unit, configured to save the file handle information in a memory of the first node.

With reference to the ninth aspect, in a first possible implementation manner of the ninth aspect, the first node further includes: a second receiving unit, configured to receive the first request message that carries the unique identification file handle information sent by the target node, The first request message is used to instruct the first node to send the file handle information to the target node; the sending unit is used to send the file handle information to the target node.

In a tenth aspect, an embodiment of the present invention provides a node, including a processor, a memory, and a communication bus, the processor and the memory are connected through the communication bus, the memory is used to store software programs and modules, and the processor is used to run software programs and module, thereby executing: receiving the file handle information sent by the source node, and storing the file handle information in the memory of the first node.

In an eleventh aspect, an embodiment of the present invention provides a client, the client includes: a first sending unit, configured to send to the source node a second message for instructing the source node to query node information of each node in at least two nodes A query message, the source node is a node communicating with the client among at least two nodes, the receiving unit is used to receive the network card information of at least one network card included in each node sent by the source node, and the second sending unit uses The purpose is to send the connection establishment request to the switch through the target network card, so that the switch forwards the connection establishment request to the target node where the target network card is located according to the target network card.

With reference to the eleventh aspect, in a first possible implementation manner of the eleventh aspect, the client further includes a third sending unit, configured to send the first data access request carrying the unique identification file handle information to the target node information.

In a twelfth aspect, an embodiment of the present invention provides a client, the client includes a processor, a memory, and a communication bus, the processor and the memory are connected through the communication bus, the memory is used to store software programs and modules, and the processor uses To run software programs and modules, so as to perform: sending to the source node a first query message for instructing the source node to query the node information of each node in at least two nodes, the source node is at least two nodes communicating with the client node; used to receive the network card information of at least one network card included in each node sent by the source node; and used to send a connection establishment request to the switch through the target network card, so that the switch forwards the connection establishment request to the target network card according to the target network card. target node.

In a thirteenth aspect, an embodiment of the present invention provides a cluster system, the cluster system includes a client, a source node, and a target node, wherein the source node adopts any of the fourth possible implementations of the fifth aspect to the fifth aspect The source node described in an implementation manner or the source node described in the sixth aspect, the target node adopts the target described in any of the possible implementation manners in the seventh aspect to the third possible implementation manner of the seventh aspect node or the target node described in the eighth aspect.

With reference to the thirteenth aspect, in the first possible implementation manner of the thirteenth aspect, the cluster system provided in the embodiment of the present invention further includes: a first node, the first node adopts the ninth aspect or the ninth aspect The node described in the first possible implementation manner or the node described in the tenth aspect.

In a fourteenth aspect, an embodiment of the present invention provides a computer storage medium for storing computer software instructions used for the method for establishing a multi-session channel described in the first aspect, which includes instructions for executing the cluster described in the ninth aspect program designed by the system.

In a fifteenth aspect, an embodiment of the present invention provides a computer storage medium for storing computer software instructions used for the method for establishing a multi-session channel described in the second aspect, which includes instructions for executing the cluster described in the ninth aspect program designed by the system.

Description of drawings

Figure 1a is a schematic diagram of a typical SMB application networking structure provided in the prior art;

FIG. 1b is a schematic structural diagram of establishing a session channel between a client and a node provided in the prior art;

Fig. 1c is a structural schematic diagram 2 of establishing a session channel between a client and a node provided in the prior art;

FIG. 2a is a first structural diagram of a cluster system provided by an embodiment of the present invention;

FIG. 2b is a second structural schematic diagram of a cluster system provided by an embodiment of the present invention;

FIG. 2c is a schematic structural diagram III of a cluster system provided by an embodiment of the present invention;

Figure 2d is a working sequence diagram of the cluster management module (InfoEqualizer) provided by the embodiment of the present invention;

FIG. 2e is a schematic diagram of the hardware structure of the server provided by the embodiment of the present invention;

FIG. 2f is a schematic diagram of the hardware structure of the client provided by the embodiment of the present invention;

FIG. 3 is a first schematic flowchart of a method for establishing a multi-session channel provided by an embodiment of the present invention;

FIG. 4a is a schematic structural diagram of a session identifier of the first session information provided by an embodiment of the present invention;

FIG. 4b is a schematic structural diagram of a multi-session channel established in the cluster system provided by an embodiment of the present invention;

FIG. 5 is a second schematic flow diagram of a method for establishing a multi-session channel provided by an embodiment of the present invention;

FIG. 6 is a third schematic flowchart of a method for establishing a multi-session channel provided by an embodiment of the present invention;

Fig. 7a is a schematic structural diagram of a circular relationship view provided by an embodiment of the present invention;

FIG. 7b is a sequence diagram of backup file handle information provided by an embodiment of the present invention;

FIG. 7c is a sequence diagram of backup TREE information provided by an embodiment of the present invention;

FIG. 8a is a fourth schematic flowchart of a method for establishing a multi-session channel provided by an embodiment of the present invention;

Fig. 8b is a schematic structural diagram of a handle identifier provided by an embodiment of the present invention;

Fig. 9a is a structural schematic diagram 4 of a cluster system provided by an embodiment of the present invention;

FIG. 9b is a schematic flowchart of a method for establishing a multi-session channel according to an embodiment of the present invention;

FIG. 9c is a sequence diagram 1 of the target node obtaining file handle information provided by the embodiment of the present invention;

FIG. 9d is the second sequence diagram of the target node obtaining file handle information provided by the embodiment of the present invention;

FIG. 10a is a schematic structural diagram of a source node provided by an embodiment of the present invention;

FIG. 10b is a schematic diagram of an integrated structure of a source node provided by an embodiment of the present invention;

FIG. 10c is a schematic diagram of a hardware structure of a source node provided by an embodiment of the present invention;

Fig. 11a is a schematic structural diagram of a target node provided by an embodiment of the present invention;

Fig. 11b is a schematic diagram of the integrated structure of the target node provided by the embodiment of the present invention;

Fig. 11c is a schematic diagram of the hardware structure of the target node provided by the embodiment of the present invention;

Fig. 12a is a schematic structural diagram of a node provided by an embodiment of the present invention;

Fig. 12b is a schematic diagram of an integrated structure of a node provided by an embodiment of the present invention;

FIG. 12c is a schematic diagram of a hardware structure of a node provided by an embodiment of the present invention;

Fig. 13a is a schematic structural diagram of a client provided by an embodiment of the present invention;

Fig. 13b is a schematic diagram of the integrated structure of the client provided by the embodiment of the present invention;

Fig. 13c is a schematic diagram of a hardware structure of a client provided by an embodiment of the present invention.

Detailed ways

In order to clearly describe the technical solutions of the embodiments of the present invention, in the embodiments of the present invention, words such as "first" and "second" are used to distinguish the same or similar items with basically the same functions and functions. Those skilled in the art can understand that words such as "first" and "second" do not limit the quantity and execution order.

Referring to FIG. 1b and FIG. 1c, FIG. 1b is a scene diagram of establishing a session channel between a common client and a node. For example, as shown in FIG. A session channel 105 is established between them, and then as shown in Figure 1c, another network card 1012 of the client 101 establishes a session channel 105 between another network card 1032 of the node 103 through a switch. In actual use, the client 101 Communication with the node 103 can be performed through the session channel 105 and the session channel 106 respectively. Since the actual capacity of a single network card is limited, the throughput of the bandwidth transmitted by the node and the client network will be limited by the number of network cards of the node. The limit bandwidth is also less. Therefore, in the prior art, a single node needs to have two or more network cards, and the requirements for the node are higher, so that the client can form more than two session channels with the node. Thereby, the limit bandwidth of transmission is improved, and at the same time, in the solution provided by the prior art, when the node 103 fails, the session channel 105 and the session channel 106 established between the client 101 and the node 103 will be disconnected, so that the client 101 Communication with node 103 is interrupted. The embodiment of the present invention establishes a session channel between the client and different nodes, so that even when the node communicating with the client fails, the client can also communicate through the session channel established with other nodes. At the same time, the embodiment of the present invention In the solution provided, as long as each node has one or more network cards, the establishment of multi-session channels can be realized, so the hardware requirements for the nodes are relatively low.

The embodiment of the present invention provides a cluster system. The cluster system supports the SMB3.0 protocol. The SMB3.0 protocol can form multiple servers into a cluster, and all nodes in the cluster provide file sharing services to clients. In the event of a cluster node failure, sharing can achieve zero downtime and fast failure recovery. As shown in FIG. 2a, FIG. 2a shows a cluster system that can be used to implement a method for establishing a multi-session channel provided by an embodiment of the present invention. As shown in Figure 2a, the cluster system includes one or more clients, (client 201 as shown in Figure 2a) and at least two nodes (node 202, node 203 and node 204 as shown in Figure 2a ), the one or more clients are connected to at least two nodes through the switch 205. Wherein, each client in one or more clients includes at least two network cards (network cards are also called network adapters or or network interface cards, English name: Network Interface Card, referred to as: NIC), for example, client 201 includes network cards 2011 and network card 2012, each node includes at least one network card (for example, node 202 includes network card 2021 and network card 2022, node 203 includes network card 2031 and network card 2032, node 204 includes network card 2041 and network card 2042). Resources requested by one or more clients to be accessed are stored in the at least two nodes. The at least two network cards of the one or more clients access resources stored in the at least two nodes by establishing a session channel with at least one network card of each of the at least two nodes. Although in FIG. 2a, only the client 201 is shown as communicating with at least two nodes, in other embodiments, there may be two or more clients accessing resources from at least two nodes. In various embodiments, the client 201 can access or communicate with at least two nodes according to the SMB3.0 protocol. Only three nodes (node 202, node 203, and node 204) are shown in FIG. 2a, but it can be understood that the cluster system provided by the embodiment of the present invention may also include more than three nodes.

It should be noted that in the embodiment of the present invention, a network card of any one of one or more clients can establish a session channel with a network card of a node, such as the network card 2011 of the client 201 and the network card of the node 202 in Figure 2a The session channel 1 is established between 2021, and the session channel 2 is established between the network card 2012 of the client 201 and the network card 2022 of the node 202. A network card of any one of one or more clients can establish a session channel with different network cards in the same node, as shown in FIG. 1. At the same time, the network card 2011 and the network card 2022 in the node 202 establish a session channel 3; a network card of any client in one or more clients can establish a session channel with a network card in a different node, as shown in Figure 2c, the client A network card 2012 of the client 201 establishes a session channel 4 with a network card 2031 in the node 203 , and at the same time, a session channel 5 is established between the network card 2012 of the client 201 and the network card 2041 in the node 204 .

In the embodiment of the present invention, in order to realize the multi-session channel feature of the SMB3.0 protocol, each client in one or more clients and each node in at least two nodes need to support the SMB3.0 protocol. Therefore, an exemplary Yes, the client provided by the embodiment of the present invention can support Windows Server 2012 or Windows Server 2012 or above operating system or Windows 8 operating system, Mac system, of course, other clients supporting the SMB3.0 protocol can also be used as the embodiment of the present invention The provided client, any node is the storage system provided by the storage manufacturer, and the storage system needs to support the SMB3.0 protocol. At the same time, any client and any node need multiple network cards preferably with the same specification (can be different brands), for example, all can be Gigabit network cards or all 10G network cards (for example, 10Gbe), etc. It is also possible to use 10 Gigabit fusion cards or Infiniband cards with RDMA (Remote Direct Memory Access, remote direct data access) function.

In the embodiment of the present invention, each of at least two nodes is provided with a cluster management module (InfoEqualizer), for example, as shown in Figure 2a, 2b or 2c, the cluster management module 2023 on the node 202, the cluster The management module 2033 and the cluster management module 2043 on the node 204, the cluster management module on each node is used for real-time updating the relevant information of all nodes in the cluster system, including the network card information (for example, network card IP, network card speed, etc.) of each node ), and the identification of each node (node number, for example, node 202), node status, etc.

The InfoEqualizer module of each node, after the cluster system is successfully initialized, queries the node information of the node where the cluster management module is located, and then passes through the back-end network of the cluster system (for example, the back-end network card on each node, End network cable, each node communicates with other nodes in the cluster system through the back-end network) broadcasts to each node in the cluster system, and the InfoEqualizer module of other nodes receives the broadcast information, and records the broadcast information carried in the received broadcast information The number of the node and the node information of the node.

Since the functions of each cluster management module are the same, the embodiment of the present invention only uses the cluster management module 2023 on the node 202 as an example to describe the function of the cluster management module. Exemplarily, as shown in Figure 2d, after the cluster system initialization is successful (because the InfoEqualizer module belongs to a functional module in the cluster system, so in the cluster system initialization process, the same InfoEqualizer module will also be initialized), the node 202, the node 203 and node 204 send respectively to the cluster system the broadcast information that comprises self network card information (for example, node 202 sends the broadcast information that carries node 202 network card information to node 203 and node 204, and node 203 also sends the broadcast message that carries node 202 network card information simultaneously in the cluster system 203 network card information broadcast information, node 204 also sends broadcast information carrying node 204 network card information in the cluster system), node 202 carries respectively the broadcast information and the network card information of node 203 sent by node 203 and node 204 After the broadcast information of the network card information of the node 204, the received network card information of the node 203 and the network card information of the node 204 are according to preset rules (for example, the correspondence between the identification of each node and the network card information of the node) Stored in the InfoEqualizer module 2023 of the node 202, similarly, the network card information of the node 202 and the network card information of the node 204 are stored in the InfoEqualizer module 2033 of the node 203, and the network card information and the node information of the node 202 are stored in the InfoEqualizer module 2043 of the node 204 203 network card information.

It should be noted that the InfoEqualizer module of each node will also store the node information of its own node at the same time, wherein the node information includes network card information.

Wherein, any node as described in FIG. 2a can also be called a server, and the at least two nodes are network devices that can provide services for the client 201. For example, the node 202, the node 203, and the node 204 can have a server function computer etc. Since the hardware structure of each server is the same, the embodiment of the present invention uses node 203 as an example to introduce the hardware architecture of each node in the cluster system shown in FIG. Bus 20313, power supply component 20314, input/output interface 20315, communication component 20316, and one or more network cards 20317, etc. Among them, the memory 20311 can be used to store data, software programs and modules, and mainly includes a program storage area and a data storage area. Use the created data etc. The processor 20312 executes various functions of the node 203 and processes data by running or executing software programs and/or modules stored in the memory 20311 and calling data stored in the memory 20311 . The system bus 20313 includes an address bus, a data bus, and a control bus for transmitting data and instructions; the power supply component 20314 is used to provide power for each component of the node 203; the input/output interface 20315 is provided between the processor 20312 and the peripheral interface module Interface; the communication component 2036 is used for wired or wireless communication between the node 203 and other devices. One or more network cards 20317 are used to form a session channel between the node 203 and the client, so as to transmit services. In the communication system, the node 203 undertakes key tasks such as data storage, forwarding, and release, and is a variety of client-based /Server (C/S) mode or browser/server (B/S) mode network is an indispensable and important part.

One or more clients 201 serve as objects in the cluster system to provide local services for clients. The clients may include one or more terminals, as long as the terminals can support the WINDOWS operating system and the Mac system described above, Referring to FIG. 2f, the terminal may include: a memory 20111 , a processor 20112 , an input unit 20114 , a display unit 20115 , a power supply 20116 , and one or more network cards 20113 and other components. Among them, the memory 20111 can be used to store data, software programs and modules, mainly including a program storage area and a data storage area, and the program storage area can store an operating system, an application program required by at least one function, and the like. The power supply component 20116 is used to provide power for each component of the client; the input unit 20114 is used to input the user's operation instructions to the client; one or more network cards 20113 are used to form a session channel between the network card of the node 203 and the client, so that transfer business.

Based on the above description, as shown in FIG. 3, an embodiment of the present invention provides a method for establishing a multi-session channel. The method is applied to a cluster system as shown in FIG. 2a. The cluster system includes a client and at least two nodes. Wherein, the client includes at least two network cards, each of the at least two nodes includes at least one network card, and the method for establishing a multi-session channel provided in an embodiment of the present invention includes:

S301. The client sends a first TCP (Transmission Control Protocol, Transmission Control Protocol) link establishment request to a source node, where the source node is a node that communicates with the client.

S302. The source node generates first TCP connection information according to the first TCP link establishment request.

S303. The client sends a first negotiation request message to the source node, where the first negotiation request message is used to instruct the source node to select a protocol version number when the client communicates with the source node.

Exemplarily, the protocol version number when the client communicates with the source node in this embodiment of the present invention is the SMB3.0 protocol.

S304. The source node determines the protocol version number when the client communicates with the source node according to the first negotiation request message.

S305. The client sends a first authentication message to the source node, where the first authentication message includes a user name of the client, a user SID (Security Identifiers, Security Identifiers), a user password, and a group to which the user belongs.

S306. The source node generates first session information (session) according to the first authentication message.

Wherein, the first session information carries user security identifiers (SID, Security Identifiers), user name, user domain name, user group information to which the user belongs, and first channel information.

Specifically, the first session information is generated by the source node when it is determined that the information such as the user name and user password carried in the first authentication message meets the requirements, and the session channel of the first session information is accompanied by the generation of the first session information. It will also generate, that is, the first session channel, which includes the TCP connection information of the first session channel, the session identifier of the session information bound to the first session channel, and the first key key1.

Through the MutilChannel feature, the client can generate the first session channel about the above-mentioned first session information with different network cards through multiple TCP connections at the same time to form a multi-session channel. At the same time, a client can access multiple shared folders at the same time. The information related to the shared folder generated when the client accesses each shared folder is called TREE information. In a multi-channel scenario, although the client implements business access through different nodes, the session information and session channel It is a one-to-many relationship, that is, one session information can correspond to one session channel. Therefore, when the client accesses through different session channels, if the session information of these session channels is the same, the client accesses the same session channel through these session channels. Shared folders will generate the same TREE information. However, if multiple shared folders are accessed, multiple TREE information will be generated.

S307. The source node sends the session identifier used to uniquely identify the first session information to the client.

Exemplarily, the session identifier may be a session ID of the first session information.

As an example, the session ID of the first session information in the embodiment of the present invention may adopt the structure shown in FIG. 4a. Wherein, the number of digits of the session ID of the first session information is 64 bits (bits), specifically, 64 bits=22 bits (random number)+32 bits (sequence number)+10 bits (node identifier).

ID of each TREE information in the embodiment of the present invention=22bit (random number)+32bit (sequence number)+10bit (node identification).

Wherein, the node identifier refers to the identifier of the node that generates the first session information with the client.

Wherein, a session channel refers to a channel for transmitting services generated after the client establishes session information with a network card of any node through a network card. Exemplarily, the embodiment of the present invention forms a session channel between a network card of the client and a network card of the source node through the above steps S301-S307. Referring to FIG. 2a, as shown in FIG. 4b, the network card 2011 of the client 201 and the source node A session channel 10 is formed between the network cards 2021 of the nodes 202 , and the session channel 10 is used for service interaction between the client 201 and the source node 202 .

S308. The client sends a first query message to the source node, where the first query message is used to instruct the source node to query the network card information of at least one network card included in each node; the source node is one of the at least two nodes that communicates with the client A node; the source node stores network card information of at least one network card included in each node.

S309. The source node receives the first query message sent by the client.

Specifically, after the source node receives the first query message, the network card information of at least one network card included in each node in the cluster system may be obtained from the cluster management module of the source node.

Exemplarily, the source node can obtain the network card information of at least one network card included in each node from its own InfoEqualizer module, for example, the number of network cards, the node identification of the network card and the speed of the network card, the MAC (MediaAccess Control or Medium Access Control, Media access control, or called physical address, hardware address) address, IP address, network card status.

S310. The source node sends network card information including at least one network card included in each node to the client.

S311. Randomly select one network card from the network card information of at least one network card included in each node of the client.

Exemplarily, the network card information of at least one network card included in each node includes the network card information of the network card 2021 and the network card 2022 of the node 202, the network card information of the network card 2031 and the network card 2032 of the node 203, and the network card information of the network card 2041 and the network card 2042 of the node 204. Network card information, the client selects a network card arbitrarily from the network cards indicated by the network card information, for example, network card 2031, because the network card information of the network card 2031 includes the identification of the node where the network card 2031 is located, therefore, after the client selects a network card , that is, the identity of the target node whose connection needs to be re-established can be obtained.

It should be noted that if the first session information has been established between a network card A of the client and a network card A' of the source node, then a session is formed between a network card A of the client and a network card A' of the source node channel, therefore, the client can send the first query message to the source node through the session channel formed between the network card and network card A' to obtain the network card information of each node in the cluster system, and obtain the information of each node in the cluster system on the client side After the network card information, on the one hand, if there are other network cards besides network card A' in the source node, for example, network card B', then the client can also select from the network card information of each network card in the cluster system. A network card other than network card A' (for example, network card B') establishes a session channel. At this time, other network cards except network card A among at least two network cards of the client can be established, for example, network card B and source node's network card B 'The session channel between' (wherein, the method of establishing the session channel is specifically: the client sends a new TCP link establishment request to the network card B' of the source node, and performs authentication based on the identification of the first session information, after the authentication is passed A new session channel is formed between network card B and network card B', and the client can access services with the source node through the new session channel, and at the same time provide greater network throughput), so that the client and the source node A multi-session channel is formed between them. In this way, when any one of the network card A of the client and the network card A' of the source node is abnormal, or when the TCP link establishment between the network card A of the client and the network card A' of the source node is interrupted, the client can use network card B and the source node The session channel formed between the network cards B' of the nodes continues to transmit services with the source node, thereby preventing service interruption.

In addition, in the above-mentioned multi-session channel formed between the client and the source node, only the service continuity of the network card failure scenario in a single node can be performed. For example, if any one of the network card A' of the client and the network card A' Abnormal, or when the TCP link establishment between the client’s network card A and the source node’s network card A’ is interrupted, the client continues to transmit services with the source node through the session channel formed between the network card B and the source node’s network card B’ , however, when the source node fails, the business between the client and the source node will be interrupted. At the same time, relying only on the formation of a multi-session channel between the source node and a node (for example, the source node), the throughput between the client and the cluster system is still limited by the number of network cards of the node.

Based on the above problems, in order to prevent the interruption of service transmission between the client and the cluster system after the source node fails, preferably, in the embodiment of the present invention, the client selects a network card other than the source node from the network card information of each network card to establish Session channel, so that even when the source node fails, the client can access the business in the cluster system, and the throughput between the client and the cluster system is not limited to the number of network cards of the source node.

For example, the client may select the network card 2042 from the network card information of each network card, and then send a TCP link establishment request to the switch through the network card 2042 .

S312. The client sends a TCP link building request to the switch through the network card selected by the client, so that the switch determines the target node where the network card is located according to the network card, and sends the TCP link building request to the target node; the target node is at least two Any one of the nodes except the source node.

S313. After the client determines that the TCP link with the target node is established successfully, the client sends a connection establishment request to the target node.

Wherein, the connection establishment request carries a user name, a user password, a session identification of the first session information, and a flag bit, and the identification bit is used to indicate whether the connection establishment request of the target node is a re-authentication of the first session information or a Authentication requests initiated by clients other than the client.

S314. The target node receives the connection establishment request sent by the client.

S315. The target node establishes a session channel between the target node and the client through the target network card according to the connection establishment request sent by the client.

Specifically, the connection establishment request also carries the user name requested by the client, the user password, the session identifier of the first session information, and a flag (also called: bond flag). First, the target node obtains the first session information according to the session identifier of the first session information (when the source node fails, obtains the first session information backed up by the source node in the first node from the first node), and converts the first session The information is stored in the target node, and then the target node verifies the user name and password carried in the first authentication request message sent by the client, and generates a second session channel carrying the second key Key2 after passing the verification, and then the target node according to The bond flag determines whether the first authentication request message is a re-authentication request to a new session channel or a re-establishment of a session channel by other clients other than the above-mentioned client, if it is a re-authentication request to a new session channel, then the first The two session channels are bound with the first session information, so that the first session information corresponds to two session channels, that is, the first session channel and the second session channel, so that when the client passes the first session channel and the second session channel Accessing the same shared folder will generate the same TREE information. However, if multiple shared folders are accessed, multiple TREE information will be generated.

Among them, the TREE information refers to the relevant information stored when the client uses the user name to access a certain share, including share permission, share name, share path and so on. The TREE information is specific to a shared directory, and includes file handle information related to multiple target files under the share.

In the embodiment of the present invention, a multi-session channel is formed between the client and a network card of the source node through the above steps S308-S309, as shown in FIG. A session channel 20, the multi-session channel 20 is used for service interaction between the client 201 and the source node 204.

An embodiment of the present invention provides a method for establishing a multi-session channel. The source node receives the first query message sent by the client to instruct the source node to query the network card information of at least one network card included in each node; the source node is at least two The node that communicates with the client in the node; the network card information of at least one network card included in each node is stored in the source node; the source node sends the network card information of at least one network card included in each node to the client; the target node according to the client The connection establishment request sent is to establish a session channel between the target node and the client through the target network card. The target node is the node where the target network card is located, and the target network card is the client according to the network card information of at least one network card included in each node. A network card selected from at least one network card included in the node. Since the actual capacity of a single network card is limited, if the number of network cards is small, the number of session channels established between the client and the node will be fewer, and the limit bandwidth that can be transmitted between the client and the cluster system will be less; Conversely, the more network cards, the more total bandwidth can be provided. Therefore, when the client uses the MutilChannel feature to access the business of the cluster, it can communicate with multiple nodes in the cluster system (for example, the source node and the target node). Establish a session channel, such as establishing a session channel between the source node and the client network card, and establishing a session channel between the target network card and the client network card, which can improve the throughput of the network transmission bandwidth between the cluster system and the client. At the same time, if the source node fails, the client can select a normal node (for example, the target node) and perform business transmission according to the session channel established with the target network card of the target node, so as to ensure that the business between the client and the cluster system continues uninterrupted Interruption greatly improves the external performance of the entire system.

It should be noted that, in the embodiment of the present invention, a session channel can be formed between each network card of the client and a network card of a node in the cluster system under the condition that the number of network cards of the client is allowed by the above method, or a session channel can be formed between A session channel is formed between one network card of the client and one network card of the source node, and other session channels are formed between the other two network cards of the client and two network cards of the target node.

Optionally, before step S309, the method provided in this embodiment of the present invention further includes:

S309-1. The source node receives a first broadcast message sent by each node in the cluster system except the source node; the first broadcast message includes network card information of at least one network card included in the node.

S309-2. The source node stores the network card information of at least one network card included in the source node and the network card information of at least one network card included in each node in the cluster system except the source node in the source node.

Optionally, as shown in FIG. 5, before step S308, the method provided in this embodiment of the present invention further includes:

S316. The source node sends a handle identifier used to acquire file handle (File Handle, file handle) information to the client.

The handle identifier in this embodiment of the present invention is any identifier that can uniquely identify the file handle information, for example, the ID or IP of the file handle information. This embodiment of the present invention does not limit it.

Wherein, when a node opens a file according to an access request from a client, it generates information of a file name, file attribute, file permission, and file path in memory, which is called file handle information. When restoring again, since there is no need to open the file, send read and write commands, and directly find the file handle information according to the identifier.

In file I/O, to read data from a file, the application first calls an operating system function passing the file name and choosing a path to the file to open the file. This function retrieves a serial number, that is, the file handle (file handle) information, and the file handle is the only identification basis for the opened file. To read a piece of data from a file, the application needs to call the function ReadFile, and send the address of the file handle in memory and the number of bytes to be copied to the operating system. When the task is completed, the file is closed by calling the system function. The file handle information in the embodiment of the present invention refers to the information generated by the node by opening/reading/writing the target file under the target shared file.

S317. The source node sends file handle information to the first node; the first node is a node corresponding to the source node among the at least two nodes.

Wherein, the first node in the embodiment of the present invention may be the above-mentioned target node, or may be other nodes except the target node.

Optionally, as shown in FIG. 6, the embodiment of the present invention further includes S318 before step S317:

S318. The source node determines a first node corresponding to the source node from at least two nodes.

As an example, step S318 in the embodiment of the present invention can be implemented in the following manner:

S3181. The source node acquires node information of other nodes except the source node among the at least two nodes.

For example, the source node acquires the node number of each of the at least two nodes except the source node.

S3182. The source node determines the first node from the at least two nodes except the source node according to the node information of the remaining nodes among the at least two nodes and according to preset rules.

Exemplarily, the node 202 acquires the node information of each node in the multiprocessing system according to the cluster management module 2023 on the node 202 (for example, the cluster management module 2023 acquires the node information of the node 203, and the cluster management module 2023 acquires the node 204's node information, the cluster management module 2023 acquires the node information of the node 205).

Exemplarily, the embodiment of the present invention takes the cluster management module 2023 to obtain the node information of the node 203 as an example: then the node 202 selects from at least two nodes according to a preset rule (for example, a consistent Hash algorithm or a preset node ring). Select a node as the first node (for example, node 203) of the source node in the remaining nodes except the source node, then, the node 202 backs up the above-mentioned generated file handle information to the node 203 through the backend network, and then returns the file handle A handle to the message identified to the client.

The embodiment of the present invention does not limit the manner in which the source node determines the first node corresponding to the source node from at least two nodes.

The embodiment of the present invention also includes a node relationship view, which can be stored on each node, can also be stored in the cluster system, or stored outside the cluster system, and the node relationship view is used to store the corresponding , so that each node can determine the first node corresponding to the node by accessing the node relationship view. Exemplarily, as shown in Figure 7a, the node relationship view can be a circular relationship view, node 202, node 203 and node 204, the four nodes form a ring pairing relationship, node 202->node 203->node 204- >Node 202, that is, node 202 backs up all file handle information to node 203, node 203 backs up all file handle information to node 204, and so on, and the embodiment of the present invention will not repeat them here.

Figure 7b shows a sequence diagram of creating backup file handle information between each node and its own backup node provided in the embodiment of the present invention. In actual use, there will be multiple nodes and clients in a cluster system. The embodiment of the present invention only takes one client and three nodes as an example. Exemplarily, as shown in FIG. ID of the generated session information), NODE1 generates file handle information in NODE1 according to the open file request sent by the client, then NODE1 queries the backup node NODE2 corresponding to NODE1 through the node relationship view, and then sends the file handle information to its backup node NODE2 sends, and NODE2 backs up the file handle information in its memory. After the backup, it sends NODE1’s file handle information backup success message to NODE1. At the same time, NODE1 sends the handle identifier of the file handle information to the client, so that the client can The handle identifier reads and writes the file handle information in NODE1; similarly, the client sends a request to open a file to NODE3, and then NODE3 generates file handle information in NODE3 according to the request to open the file, and then queries the backup node of the NODE3. When the backup node of NODE3 is NODE1, then back up the file handle information generated in NODE3 to NODE1, and then NODE1 returns the message that the file handle information backup is successful to NODE3, and NODE3 sends the handle identifier of the file handle information to the client, and the client The end can access the file handle information in NODE3 according to the handle identifier. Similarly, the process of generating file handle information for NODE2 and then backing up the file handle information is the same as that of NODE1 and NODE3, and will not be repeated in this embodiment of the present invention.

It should be noted that, in the embodiment of the present invention, the TREE information is also backed up. The specific backup of the TREE information by each node can be referred to in Figure 7c. As shown in Figure 7c, the client is sending a request to NODE1 to open the shared folder , after NODE1 receives the shared folder request, it generates TREE information in its memory, and queries NODE1’s backup node NODE2, and sends the backup TREE information to NODE2, and then sends the ID of the TREE information to the client, so that when the client When the client requests to access the target file in NODE1, the open file request it sends carries the ID of the TREE information and the ID of the session information generated between the client and NODE1. When the client requests to access the target file in the node, it needs to pass The TREE information determines the shared folder where the file is located, so that the access to the target file can be realized. Similarly, the process of generating TREE information for NODE2 and NODE3, and then backing up the TREE information is the same as that of NODE1, and will not be repeated in this embodiment of the present invention.

Optionally, as shown in FIG. 8a, this embodiment of the present invention further includes steps S319-S323 before step S316:

S319. The client sends a first access request message to the source node, where the first access request message is used to access the target shared folder.

Among them, the target shared folder refers to a node that configures a share name for a certain folder path of itself. When the client uses the SMB protocol to access the node through the network, a folder that can be displayed. The name of the folder is the configured share name. The essence of the target shared folder is equivalent to providing an entry for the client to access the file path of the node itself through the network.

Take two Windows systems as an example, one of which is a client and the other is a node. The node hopes that the client can access a target file under the local disk of the node. Exemplarily, the path of the target file is D:\A\B\C.txt. Among them, D is the disk on the node, so configure a share for folder B on the node, and the name is SHARE (shared)_B. In this way, when the client accesses through the network, it sees a SHARE_B target shared folder, and then double-clicks to enter the SHARE_B target shared folder to see the target file C.txt.

S320. The source node opens the target shared folder according to the first access request message, and generates TREE information.

S321. The source node sends the identification of the above TREE information to the client.

The identifier of the TREE information in the embodiment of the present invention is used to uniquely identify the TREE information. Exemplarily, the identifier of the TREE information may be the ID of the TREE information.

S322. The client sends a second access request message to the source node, where the second access request message is used to access the target file.

Optionally, the second access request message carries the session identifier of the above-mentioned first session information or the identifier of the TREE information.

S323. The source node opens the target file and generates file handle information of the target file.

The identifier of the file handle information in the embodiment of the present invention is 64 bits. Specifically, as shown in FIG. 8 b , the structure of the identifier of the file handle information includes a random number of 22 bits, a sequence number of 32 bits and a node identifier of 10 bits.

Wherein, the node identifier refers to the node identifier of the file handle information generated according to the second data access request message sent by the client, for example, the number of the source node.

Optionally, before step S310, the method provided in this embodiment of the present invention further includes step S324 and step S325:

S324. The source node sends a first broadcast message to other nodes of the at least two nodes except the source node, where the first broadcast message includes node information of the source node.

Exemplarily, the source node sends node information including source node network card information (for example, network card speed, network card IP) and node status to other nodes except the source node among the at least two nodes.

S325. The source node receives the node information of the node sent by each node except the source node among the at least two nodes.

When the source node fails, the cluster system architecture shown in Figure 9a, due to the source node failure, the session channels established between all network cards in the source node (i.e. node 202 in Figure 9a) and at least two network cards of the client All interruptions, but since the network card of the client 201 also establishes a session channel with the target node (i.e. node 204 in Fig. The session channel 901, the network card 2012 of the client 201 and the network card 2042 of the node 204 establish a session channel 902, therefore, the client 201 can also communicate with the node 204 through the session channels 901 and 902, so as to perform the read data operation on the file handle information /write data operation. The following will describe in detail the switching process of nodes in the cluster system when the source node fails with reference to FIGS. 9b-9d. (in Fig. 9a, the dotted line represents the session channel established between the network card 2011 of the client and the network card of any node in the cluster system, and the solid line in Fig. 9a represents the session channel established between the network card 2012 of the client and the network card of any node in the cluster system session channel).

Optionally, as shown in FIG. 9b, after step S315, the method provided in this embodiment of the present invention further includes:

S326. The client sends a first data access request message to the target node, where the first data access request message carries a handle identifier uniquely identifying file handle information and a TREE information identifier.

Wherein, the first data access request includes a data read instruction or a data write instruction.

S327. The target node receives the first data access request message sent by the client.

S328. The target node acquires file handle information according to the handle identifier carried in the first data access request message.

S329. The target node performs a data read operation or a data write operation according to the file handle information.

Since the target node in the embodiment of the present invention may be the first node of the source node, it may not be the first node of the source node, when the target node is the first node of the source node and the target node is not the first node of the source node , the target node obtains the file handle information in different ways, so the following will be described in detail:

On the one hand, when the target node is the first node of the source node, that is, file handle information is stored in the target node.

Therefore, as shown in FIG. 9c, step S328 may specifically be implemented in the following manner:

S3281A: The target node directly obtains the file handle information from the memory of the target node according to the handle identifier.

On the other hand, when the target node is not the first node of the source node, that is, no file handle information is stored in the source node.

Therefore, as shown in FIG. 9d, step S328 may specifically be implemented in the following manner:

S3281B. The target node parses the handle identifier to determine the identifier of the source node storing the file handle information.

From the above content, it can be known in combination with FIG. 8b that the handle identifier carries the identifier of the node that generates the file handle information indicated by the handle identifier. Therefore, the target node can determine the source of the file handle information by analyzing the handle identifier. The ID of the source node.

S3282B. The target node sends a request for querying file handle information to the source node, and the request for file handle information carries a handle identifier

S3283B. When the target node determines that the source node is faulty, the target node determines a first node corresponding to the source node, and the first node is used to provide file handle information according to the handle identifier of the client.

The manner in which the target node determines the first node corresponding to the source node may be obtained from the relationship view, which is not limited in this embodiment of the present invention.

By way of example, a destination node can determine a source node failure by:

After the target node sends the first request message to the source node, if the response message sent by the source node is not received within a preset time, the target node determines that the source node is faulty.

For example, in the embodiment of the present invention, the target node can determine the first node corresponding to the source node in the following manner:

The target node determines the first node corresponding to the source node from the node relationship view.

S3284B. The target node acquires file handle information from the first node.

S3285B. The target node writes/reads data to/from the file according to the file handle information.

Step S3284B can specifically be realized in the following ways:

S3284B1. The target node sends a first request message to the first node, where the first request message is used to instruct the first node to return file handle information.

Specifically, the first request message should include a handle identifier of the file handle information.

S3284B2. The target node receives the first response message sent by the first node, where the first response message carries the file handle information.

Optionally, the connection establishment request includes a user name and a user password, and step S315 in the embodiment of the present invention can be specifically implemented in the following manner:

S3151. The target node verifies the user name and user password sent by the client.

S3152. After determining that the user name matches the preset user name and the user password matches the preset user password, the target node establishes a session channel between the target node and the client through the target network card.

Specifically, the connection establishment request includes a session identifier and a flag bit, the session identifier is used to uniquely identify the first session information, the first session information is generated when the session channel between the source node and the client is established, and the flag The bit is used to indicate the re-authentication of the session channel established between the source node and the client; after step S315, the method provided by the embodiment of the present invention further includes:

S316. The target node parses the session identifier to determine the identifier of the source node that generates the first session information.

Specifically, since the session identifier includes the number of the node generating the session information, the target node can determine the identifier of the source node by parsing the session identifier.

S317. The target node sends a first request message to the source node, so as to acquire the first session information indicated by the session identifier from the source node.

S318, the target node binds the second session channel with the first session information according to the flag bit, the second session channel is the target node and the client established by the target node through the target network card conversation channel between.

For example, the client selects any network card (assuming the network card of Node3) to re-initiate a TCP link establishment request. After the link is successfully established, the client sends a re-authentication session request to Node3 by carrying the ID of the session established with Node1. Node3 identifies the original node of the session as Node1 through the node number contained in the session ID carried by the client, then copies the relevant session information from Node1 through the back-end network, creates the same session information on Node3, and re-authenticates The session process is completed, and the multi-session channel is established successfully.

The foregoing mainly introduces the solutions provided by the embodiments of the present invention from the perspective of interaction between various network elements. It can be understood that, in order to realize the above-mentioned functions, each network element, such as the source node, the target node, and the first node, includes a corresponding hardware structure and/or software module for performing each function. Those skilled in the art should easily realize that the present invention can be realized in the form of hardware or a combination of hardware and computer software in combination with the units and algorithm steps of each example described in the embodiments disclosed herein. Whether a certain function is executed by hardware or computer software drives hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present invention.

In the embodiment of the present invention, the function modules of the source node, the target node, and the first node can be divided according to the above method examples. For example, each function module can be divided corresponding to each function, or two or more functions can be integrated in one in a processing module. The above-mentioned integrated modules can be implemented in the form of hardware or in the form of software function modules. It should be noted that the division of modules in the embodiment of the present invention is schematic, and is only a logical function division, and there may be another division manner in actual implementation.

In the case of dividing each functional module corresponding to each function, FIG. 10a shows a possible structural diagram of the source node involved in the above embodiment. The source node 100 includes: a first receiving unit 101, and a first sending unit The unit 102, the first receiving unit 101 is used to support the source node to execute the process S309 in Figure 3; the process S309 in Figure 5; the S309 in Figure 6, the S309 in Figure 8a and Figure 9b; The supporting source node executes the process S310 in FIG. 3 , the process S310 in FIG. 5 ; the process S310 in FIG. 6 , and the process S310 in FIGS. 8a and 9b. Wherein, all relevant content of each step involved in the above-mentioned method embodiment can be referred to the function description of the corresponding function module, and will not be repeated here.

In the case of using an integrated unit, Fig. 10b shows a possible structural diagram of the source node involved in the above embodiment. The source node 100 includes: a processing module 1002 and a communication module 1003 . The processing module 1002 is used to control and manage the actions of the source node 100. For example, the processing module 1002 is used to support the source node 100 to execute the processes S302, S304, S306 and S309 in FIG. 3, and S302, S304, S306 and S309; process S302 in Fig. 6, S304, S306, S309 and S316, process S302 in Fig. 8a, S304, S306, S309, S318, S320 and S323, process S302 in Fig. 9b, S304, S306, S309, S318 , S320, and S323, and/or other processes for the techniques described herein. The communication module 1002 is used to support the communication between the source node 100 and other network entities, (for example, the client, the target node, the first node, etc.), and the communication module 1003 is used to support the source node 100 to execute the process S307 and the process in Figure 3 S310; process S307, S310, S316 and process S317 in FIG. 5, process S307, S310, S316 and process S317 in FIG. 6, process S307, S310, S316 and process S317 in FIG. 8a. The source node 100 may also include a storage module 1001 for storing program codes and data of the source node 100 .

Wherein, the processing module 1002 may be a processor or a controller, such as a central processing unit (Central Processing Unit, CPU), a general processor, a digital signal processor (Digital Signal Processor, DSP), an application-specific integrated circuit (Application-Specific Integrated Circuit, ASIC), Field Programmable Gate Array (Field Programmable Gate Array, FPGA) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. It can implement or execute the various illustrative logical blocks, modules and circuits described in connection with the present disclosure. The processor may also be a combination of computing functions, for example, a combination of one or more microprocessors, a combination of DSP and a microprocessor, and so on. The communication module 1003 may be a transceiver, a transceiver circuit, or a communication interface 1013 and the like. The storage module 1001 may be a memory.

When the processing module 1002 is a processor 1012, the communication module 1003 is a communication interface 1013, and the storage module 1001 is a memory, the source node involved in this embodiment of the present invention may be the source node shown in FIG. 10c.

Referring to FIG. 10 c , the source node 100 includes: a processor 1012 , a communication interface 1013 , a memory 1011 and a bus 1014 . Wherein, the communication interface 1013, the processor 1012, and the memory 1011 are connected to each other through a bus 1014; the bus 1014 may be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (Extended Industry Standard Architecture, EISA) bus Wait. The bus can be divided into address bus, data bus, control bus and so on. For ease of representation, only one thick line is used in FIG. 10c, but it does not mean that there is only one bus or one type of bus.

In the case of dividing each functional module corresponding to each function, FIG. 11a shows a possible structural diagram of the target node involved in the above embodiment. The target node 11 includes: a first receiving unit 110, and an establishing unit 111 . The first receiving unit 110 is used to support the target node to execute the process S314 in Figure 3, the process S314 in Figure 5, the process S314 in Figure 6, the process S314 in Figure 8a and the process S314 in Figure 9b; The process S315 in FIG. 3 , the process S315 in FIG. 5 , the process S315 in FIG. 6 , the process S315 in FIG. 8a and the process S315 in FIG. 9b are executed on the supporting target node. Wherein, all relevant content of each step involved in the above-mentioned method embodiment can be referred to the function description of the corresponding function module, and will not be repeated here.

In the case of using an integrated unit, FIG. 11b shows a possible structural schematic diagram of the target node involved in the above embodiment. The target node 11 includes: a processing module 1102 and a communication module 1103 . The processing module 1102 is used to control and manage the actions of the target node. For example, the processing module 1102 is used to support the target node to execute the processes S314 and S315 in FIG. 3, the processes S314 and S315 in FIG. 5, and the processes S314 and S315 in FIG. S315, processes S314 and S315 in FIG. 8a, and S314 and S315, S327 and S328 in FIG. 9b and processes S327, S328 and S329 in FIG. 9c, and/or other processes for the techniques described herein. The communication module 1103 is used to support the communication between the target node and other network entities, for example, communication with the functional modules or network entities shown in Figure 3, Figure 5, Figure 6, Figure 8a and Figure 9a, Figure 9b and Figure 9c , for example, the client, the source node, and the first node. The target node may also include a storage module 1101 for storing program codes and data of the source node.

Wherein, the processing module 1102 may be a processor or a controller, such as a central processing unit (Central Processing Unit, CPU), a general purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application-specific integrated circuit (Application-Specific Integrated Circuit, ASIC), Field Programmable Gate Array (Field Programmable Gate Array, FPGA) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. It can implement or execute the various illustrative logical blocks, modules and circuits described in connection with the present disclosure. The processor may also be a combination of computing functions, for example, a combination of one or more microprocessors, a combination of DSP and a microprocessor, and so on. The communication module 1103 may be a transceiver, a transceiver circuit, or a communication interface 1113 or the like. The storage module 1101 may be a memory.

When the processing module 1102 is a processor, the communication module 1103 is a communication interface 1113, and the storage module 1101 is a memory, the target node involved in this embodiment of the present invention may be the target node shown in FIG. 11c.

Referring to FIG. 11 c , the target node 11 includes: a processor 1112 , a communication interface 1113 , a memory 1111 and a bus 1114 . Wherein, the communication interface 1113, the processor 1112, and the memory 1111 are connected to each other through a bus 1114; the bus 1114 may be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus Wait. The bus can be divided into address bus, data bus, control bus and so on. For ease of representation, only one thick line is used in Fig. 11c, but it does not mean that there is only one bus or one type of bus.

In the case of dividing each functional module corresponding to each function, FIG. 12 a shows a possible structural diagram of the node involved in the above embodiment, and the node includes: a first receiving unit 1201 and a saving unit 1202 . The first receiving unit 1201 is configured to support the first node to execute the process S329 in FIG. 9b, and the saving unit 1202 is configured to support the node to execute the process S330 in FIG. 9b. Wherein, all relevant content of each step involved in the above-mentioned method embodiment can be referred to the function description of the corresponding function module, and will not be repeated here.

In the case of using integrated units, Fig. 12b shows a possible structural schematic diagram of the nodes involved in the above embodiments. The node 120 includes: a processing module 1212 and a communication module 1213 . The processing module 1212 is used to control and manage the actions of the node 120, for example, the processing module 1212 is used to support the node to execute the processes S330 and S331 in Fig. 9b; and/or other processes for the technologies described herein. The communication module 1213 is used to support the communication between the node 120 and other network entities, for example, communication with the functional modules or network entities shown in Figure 8a and Figure 9b (for example, the target node and the source node), the communication module 1213 uses The support node 120 receives the first broadcast message, receives the file handle information, and receives the first request message. The node 120 may also include a storage module 1211 for storing program codes and data of the node 120 .

Wherein, the processing module 1212 may be a processor or a controller, such as a central processing unit (Central Processing Unit, CPU), a general processor, a digital signal processor (Digital Signal Processor, DSP), an application-specific integrated circuit (Application-Specific Integrated Circuit, ASIC), Field Programmable Gate Array (Field Programmable Gate Array, FPGA) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. It can implement or execute the various illustrative logical blocks, modules and circuits described in connection with the present disclosure. The processor may also be a combination of computing functions, for example, a combination of one or more microprocessors, a combination of DSP and a microprocessor, and so on. The communication module 1213 may be a transceiver, a transceiver circuit, or a communication interface 12002 and the like. The storage module 1211 may be a memory.

When the processing module 1212 is a processor, the communication module 1213 is a communication interface 12002, and the storage module 1211 is a memory, the nodes involved in this embodiment of the present invention may be the nodes shown in FIG. 12c.

Referring to FIG. 12 c , the node 120 includes: a processor 12001 , a communication interface 12002 , a memory 12003 and a bus 12004 . Wherein, the communication interface 12002, the processor 12001, and the memory 12003 are connected to each other through a bus 12004; the bus 12004 may be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (Extended Industry Standard Architecture, EISA) bus Wait. The bus can be divided into address bus, data bus, control bus and so on. For ease of representation, only one thick line is used in FIG. 12c, but it does not mean that there is only one bus or one type of bus.

In the case of dividing each functional module corresponding to each function, Fig. 13a shows a possible structural diagram of the client involved in the above embodiment, the client includes: a first sending unit 130, a receiving unit 131 and a second Sending unit 132. The first sending unit 130 is used to support the client to execute the process S308 in FIG. 3, S308 in FIG. 5, S308 in FIG. 6, S308 in FIG. 8a and S308 in FIG. Receive the first response message sent by the source node, and the second sending unit is used to support the client to execute the process S312 in FIG. 3, the process S312 in FIG. 5, the process S312 in FIG. 6, the process S312 in FIG. Process S312 in 9b. Wherein, all relevant content of each step involved in the above-mentioned method embodiment can be referred to the function description of the corresponding function module, and will not be repeated here.

In the case of using an integrated unit, Fig. 13b shows a possible structural diagram of the client involved in the above embodiment. The client 130 includes: a processing module 1302 and a communication module 1303 . The processing module 1302 is used to control and manage the actions of the client 130. For example, the processing module 1302 is used to support the client 130 to execute the processes S301, S303, S305, S308, S311, S312 and S313 in FIG. Processes S301, S303, S305, S308, S311, S312 and S313, processes S301, S303, S305, S308, S311, S312 and S313 in Figure 6, processes S301, S303, S305, S308, S311, S312 in Figure 8a And S313, processes S301, S303, S305, S308, S311, S312, S313, and S326 in FIG. 9b; and/or other processes for the techniques described herein. The communication module 1303 is used to support the communication between the client 130 and other network entities, for example, communication with the functional modules or network entities shown in Fig. 8a and Fig. 9b (eg, target node and source node). The client 130 may also include a storage module 1301 for storing program codes and data of the client 130 .

Wherein, the processing module 1302 may be a processor or a controller, such as a central processing unit (Central Processing Unit, CPU), a general processor, a digital signal processor (Digital Signal Processor, DSP), an application-specific integrated circuit (Application-Specific Integrated Circuit, ASIC), Field Programmable Gate Array (Field Programmable Gate Array, FPGA) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof. It can implement or execute the various illustrative logical blocks, modules and circuits described in connection with the present disclosure. The processor may also be a combination of computing functions, for example, a combination of one or more microprocessors, a combination of DSP and a microprocessor, and so on. The communication module 1303 may be a transceiver, a transceiver circuit, or a communication interface 1312 and the like. The storage module 1301 may be a memory.

When the processing module 1302 is a processor, the communication module 1303 is a communication interface 1312, and the storage module 1301 is a memory, the nodes involved in this embodiment of the present invention may be the nodes shown in FIG. 13c.

Referring to FIG. 13 c , the client 130 includes: a processor 1311 , a communication interface 1312 , a memory 1313 and a bus 1314 . Wherein, the communication interface 1312, the processor 1311 and the memory 1313 are connected to each other through a bus 1314; the bus 1314 may be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (Extended Industry Standard Architecture, EISA) bus Wait. The bus can be divided into address bus, data bus, control bus and so on. For ease of representation, only one thick line is used in FIG. 13c, but it does not mean that there is only one bus or one type of bus.

The embodiment of the present invention provides a cluster system. The various components in the client 130 can be specifically referred to as shown in FIG. 2a, including source nodes, nodes and target nodes, wherein the target nodes are nodes as shown in FIGS. 11a-11c , the source node is the node shown in Figures 10a-10c, the node is the node shown in Figures 12a-12c, and the client is the client shown in Figures 13a-13c.

An embodiment of the present invention provides a computer storage medium for storing computer software instructions used for the multi-session channel method described in the first aspect, which includes a program designed for executing the cluster system of the seventh aspect.

Those skilled in the art can clearly understand that for the convenience and brevity of description, only the division of the above-mentioned functional modules is used as an example for illustration. In practical applications, the above-mentioned function allocation can be completed by different functional modules according to needs. The internal structure of the device is divided into different functional modules to complete all or part of the functions described above. For the specific working process of the above-described system, device, and unit, reference may be made to the corresponding process in the foregoing method embodiments, and details are not repeated here.

The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present invention. Should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims (8)

1. a kind of more session channel method for building up, which is characterized in that the method is applied in group system, the group system Including client and at least two nodes, wherein each node includes at least one network interface card, institute at least two node The method of stating includes:

Source node receives the first query messages that the client is sent；First query messages are used to indicate the source node Inquire the network interface card information at least one network interface card that each node includes；The source node be at least two node in The node that the client is communicated；The net at least one network interface card that each node includes is stored in the source node Card information；

The source node sends the network interface card information at least one network interface card that each node includes to the client；

Destination node establishes request according to the connection that the client is sent, and establishes the destination node and institute by target network interface card The session channel between client is stated, the destination node is the node where the target network interface card, and the target network interface card is institute State at least one that the network interface card information of at least one network interface card that client includes according to each node includes from each node Network interface card other than the source node selected in network interface card.

2. the method according to claim 1, wherein sending each node to the client in the source node Including at least one network interface card network interface card information before, which comprises

The source node receives the first broadcast message of the transmission of each node in the group system in addition to the source node； First broadcast message includes the network interface card information at least one network interface card that the node includes；

Except described in the network interface card information at least one network interface card that the source node is included by the source node and the group system The network interface card information at least one network interface card that each node except source node includes is stored in the source node.

3. method according to claim 1 or 2, which is characterized in that it includes user name and use that request is established in the connection Family password；

The destination node establishes request according to the connection that the client is sent, and establishes the destination node by target network interface card Session channel between the client, comprising:

The user name and user password that the destination node sends the client verify；

Determining that user name matches with preset user name, and after the user password is matched with preset user password, institute State the session channel that destination node is established by the target network interface card between the destination node and the client.

4. according to the method described in claim 3, it is characterized in that, it includes session identification and mark in request that the connection, which is established, Will position, the session identification be used for the first session information of unique identification, first session information be establish the source node and Generated when session channel between the client, the flag bit be used to indicate to the source node and the client it Between establish the re-authentication of session channel；

Before the first query messages that the source node receives that the client is sent, the method also includes:

The source node sends session identification to the client；

Correspondingly, the destination node establishes the session between the destination node and the client by the target network interface card After channel, which comprises

The destination node parses the session identification, determines the mark for generating the source node of first session information Know；

The destination node sends the first request message to the source node, to obtain the session identification institute from the source node The first session information indicated；

The destination node is bound the second session channel and first session information, described second according to the flag bit Session channel is that the destination node passes through the meeting between the target network interface card destination node established and the client Talking path.

5. a kind of group system, which is characterized in that the group system includes client and at least two nodes, wherein institute Stating each node at least two nodes includes at least one network interface card, and the client includes at least one network interface card, wherein

Source node is used to receive the first query messages that the client is sent；First query messages are used to indicate the source The network interface card information at least one network interface card that each node includes described in querying node；The source node is at least two node In the node that is communicated with the client；At least one network interface card that each node includes is stored in the source node Network interface card information；And the network interface card information for sending at least one network interface card that each node includes to the client；

Request is established in the connection that destination node is used to be sent according to the client, establishes the destination node by target network interface card Session channel between the client, the destination node are the node where the target network interface card, the target network interface card The network interface card information at least one network interface card for including according to each node for the client from each node include at least Network interface card other than the source node selected in one network interface card.

6. group system according to claim 5, which is characterized in that the source node is also used to: receiving the cluster system The first broadcast message that each node in system in addition to the source node is sent；First broadcast message includes the node Including at least one network interface card network interface card information；And the network interface card information of at least one network interface card for including by the source node And the network interface card information of at least one network interface card that includes of each node in the group system in addition to the source node is stored in In the source node.

7. group system according to claim 5 or 6, which is characterized in that the connection establish request include user name with And user password；

The destination node is specifically used for: the user name and user password send to the client verifies；And it is used for It is determining that user name matches with preset user name, and after the user password is matched with preset user password, is passing through institute State the session channel that target network interface card is established between the destination node and the client.

8. group system according to claim 7, which is characterized in that the connection is established in request include session identification with And flag bit, the session identification be used for the first session information of unique identification, first session information be establish source node and It is generated when the session channel established between the client；The flag bit is used to indicate to the source node and the client The session channel re-authentication established between end；

The source node is also used to send session identification to the client；

Correspondingly, the destination node is also used to: being parsed to the session identification, determine and generate first session information Source node mark；And for sending the first request message to the source node, to obtain the meeting from the source node Words identify the first indicated session information, carry session identification in the first request message；And for according to the mark Position, the second session channel and first session information are bound, and second session channel passes through institute for the destination node State the session channel between the destination node and the client of target network interface card foundation.