CN113300979A - Network card queue creating method and device under RDMA (remote direct memory Access) network - Google Patents
Network card queue creating method and device under RDMA (remote direct memory Access) network Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04L47/00—Traffic control in data switching networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
- H04L41/0654—Management of faults, events, alarms or notifications using network fault recovery
- H04L41/0668—Management of faults, events, alarms or notifications using network fault recovery by dynamic selection of recovery network elements, e.g. replacement by the most appropriate element after failure
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/50—Network services
- H04L67/60—Scheduling or organising the servicing of application requests, e.g. requests for application data transmissions using the analysis and optimisation of the required network resources
Abstract
The embodiment of the specification provides a method and a device for creating a network card queue in an RDMA (remote direct memory access) network, wherein the method for creating the network card queue in the RDMA network comprises the following steps: receiving a queue creating request, wherein the queue creating request carries queue address information and queue port information; according to the queue address information and the queue port information, a network card queue pool and at least two network card queues corresponding to the queue creation request are created; and associating the at least two network card queues with the network card queue pool to serve as the network card queues of the network card queue pool.
Description
Technical Field
The embodiment of the specification relates to the technical field of data communication, in particular to a network card queue creating method and device under an RDMA (remote direct memory access) network.
Background
With the development of the internet, more and more enterprises support employees to work online and to attend classes online, and online meetings have become the mainstream in the future, under which the demand of global users for cloud computing is further increased, which also prompts large infrastructure providers to continuously expand the scale and number of data centers to meet the current and future demands. Currently, a data center fully uses common commercial servers and network devices, the scale of a single data center is very large, the number of the devices is in the range of tens of thousands to hundreds of thousands, and the increase of the scale of the data center is accompanied by more network device failures (lifetime expiration, hardware bug, sudden power failure, conventional failure probability, natural disaster, etc.), which often result in the results of availability jitter, temporary offline of services, even long-term unavailability of the services, and the like of cloud services running on the data center. At present, when a fault occurs, an operation and maintenance system alarms, an operation and maintenance engineer manually isolates the fault equipment, and the process of switching fault flow to available equipment usually needs a minute level, and the process is quite long for service recovery. How to rapidly recover the network availability of the cloud service when a network failure occurs is an urgent problem to be solved.
Disclosure of Invention
In view of this, an embodiment of the present disclosure provides a method for creating a network card queue in an RDMA network. One or more embodiments of the present disclosure also relate to a device for creating a network card queue in an RDMA network, a computing device, and a computer-readable storage medium, so as to solve the technical defects in the prior art.
In a first aspect of the embodiments of the present specification, a method for creating a network card queue in an RDMA network is provided, including:
receiving a queue creating request, wherein the queue creating request carries queue address information and queue port information;
according to the queue address information and the queue port information, a network card queue pool and at least two network card queues corresponding to the queue creation request are created;
and associating the at least two network card queues with the network card queue pool to serve as the network card queues of the network card queue pool.
In a second aspect of the embodiments of the present specification, there is provided a device for creating a network card queue in an RDMA network, including:
the device comprises a receiving module, a queue creating module and a processing module, wherein the receiving module is configured to receive a queue creating request, and the queue creating request carries queue address information and queue port information;
the creating module is configured to create a network card queue pool and at least two network card queues corresponding to the queue creating request according to the queue address information and the queue port information;
and the association module is configured to associate the at least two network card queues with the network card queue pool to serve as the network card queues of the network card queue pool.
In a third aspect of embodiments of the present specification, there is provided a computing device comprising:
a memory and a processor;
the memory is to store computer-executable instructions, and the processor is to execute the computer-executable instructions to:
receiving a queue creating request, wherein the queue creating request carries queue address information and queue port information;
according to the queue address information and the queue port information, a network card queue pool and at least two network card queues corresponding to the queue creation request are created;
and associating the at least two network card queues with the network card queue pool to serve as the network card queues of the network card queue pool.
In a fourth aspect of the embodiments of the present specification, a computer-readable storage medium is provided, which stores computer-executable instructions that, when executed by a processor, implement the steps of the network card queue creation method in the RDMA network.
The present specification provides a method for creating a network card queue in an RDMA network, including: receiving a queue creating request, wherein the queue creating request carries queue address information and queue port information; according to the queue address information and the queue port information, a network card queue pool and at least two network card queues corresponding to the queue creation request are created; the at least two network card queues are associated with the network card queue pool and serve as the network card queues of the network card queue pool, the network card queue pool and the at least two network card queues associated with the network card queue pool are created based on the queue creation request, so that the network card queue for data transmission is switched to another network card queue in the network card queue pool under the condition that data transmission is overtime, data transmission from a fault path corresponding to the network card queue for transmission overtime is avoided, a new network card queue does not need to be created again, and the fault recovery efficiency is improved.
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Fig. 1 is a processing flow diagram of a network card queue creating method in an RDMA network according to an embodiment of the present specification;
fig. 2 is a schematic diagram of a network card queue creating method in an RDMA network according to an embodiment of the present specification;
fig. 3 is a processing flow diagram of a network card queue creating method applied in an RDMA network transmission scenario according to an embodiment of the present disclosure;
fig. 4 is a schematic diagram of a network card queue creating apparatus in an RDMA network according to an embodiment of the present specification;
fig. 5 is a block diagram of a computing device according to an embodiment of the present disclosure.
Detailed Description
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present description. This description may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make and use the present disclosure without departing from the spirit and scope of the present disclosure.
The terminology used in the description of the one or more embodiments is for the purpose of describing the particular embodiments only and is not intended to be limiting of the description of the one or more embodiments. As used in one or more embodiments of the present specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used in one or more embodiments of the present specification refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It will be understood that, although the terms first, second, etc. may be used herein in one or more embodiments to describe various information, these information should not be limited by these terms. These terms are only used to distinguish one type of information from another. For example, a first can also be referred to as a second and, similarly, a second can also be referred to as a first without departing from the scope of one or more embodiments of the present description. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.
First, the noun terms to which one or more embodiments of the present specification relate are explained.
RDMA (Remote Direct Memory Access): the RDMA transfers data from a system to a remote system memory directly through the network, and does not cause any influence on the operating system, so that the processing function of the computer is not needed. It eliminates the overhead of external memory copy and context switch, thus freeing up memory bandwidth and CPU cycles for improved application system performance.
RoCE protocol: the network Protocol is a network Protocol supporting RDMA, and has two versions, RoCEv1 and RoCEv2, where RoCEv1 is mainly distinguished from RDMA Protocol implemented based on an ethernet link layer (a switch needs to support Flow Control technologies such as PFC (Priority-based Flow Control), and the like, and ensures reliable transmission in a physical layer), and RoCEv2 is implemented in a UDP (User data Protocol) layer in an ethernet TCP/IP Protocol.
QP (Queue Pairs): the transmission Queue supporting the RDMA protocol specifically includes a Send Queue (SQ) and a Receive Queue (RQ), and the SQ and RQ are usually created in pairs.
MMU (Memory Management Unit): sometimes referred to as Paged Memory Management Unit (PMMU). It is computer hardware responsible for handling memory access requests for a Central Processing Unit (CPU). Its functions include the translation of virtual to physical addresses (i.e. virtual memory management), memory protection, control of the central processor cache, and in simpler computer architectures, is responsible for bus arbitration and bank switching.
In this specification, a network card queue creation method in an RDMA network is provided, and one or more embodiments of the specification relate to a network card queue creation apparatus in an RDMA network, a computing device, and a computer-readable storage medium, which are described in detail in the following embodiments one by one.
The embodiment of the method for creating the network card queue in the RDMA network provided by the present specification is as follows:
fig. 1 shows a processing flow chart of a network card queue creating method in an RDMA network according to an embodiment of the present specification, which specifically includes the following steps:
In practical applications, before data transmission between two communication parties, a network connection (i.e., a network card queue) for communication needs to be established between the two communication parties, and therefore, the network card queue for communication between the two communication parties needs to be created based on a queue creation request.
The queue creation request refers to a request for creating a network card queue for data transmission, where the queue creation request carries queue address information and queue port information, where the queue address information may be understood as IP addresses (i.e., a source IP address and a target IP address) of both communication parties, and the queue port information may be understood as a port number of a communication party. Since the port number of the local end (i.e., the source port number) can be determined separately in the creation process, the queue port information at least includes the port number of the opposite communication end (i.e., the destination port number), and in the specific implementation, the IP addresses and the port numbers of both communication parties are the data required for creating the network card queue.
Specifically, the network card queue refers to a transmission queue supporting an RDMA protocol (also understood as an RDMA network connection). In practical application, a sending end schedules Queue elements in a network card Queue to perform data transmission between the sending end and a receiving end, and further, the network card Queue comprises a Queue pair (Queue Pairs, QP) composed of a sending Queue (Send Queue, SQ) and a receiving Queue (Receive Queue, RQ), where SQ is used for sending data to a communication opposite end and RQ is used for receiving data sent by the communication opposite end.
And 104, creating a network card queue pool and at least two network card queues corresponding to the queue creation request according to the queue address information and the queue port information.
The network card Queue pool may be understood as a Virtual Queue (VQP) provided by an upper layer application when the network card Queue is a transmission Queue supporting RDMA, or may be understood as an abstract entity for encapsulating a network card Queue actually performing data transmission. That is, the network card queue pool does not directly perform data transmission, and the network card queue pool is not provided for the opposite communication end, but is only provided for the upper layer application of the local end, so for the upper layer application of the local end, data transmission is performed through the network card queue pool, but actually, data transmission is performed through the network card queue in the network card queue pool.
Based on this, the manner of creating the network card queue pool of the queue creation request queue according to the queue address information and the queue port information is various, and since the network card queue pool is not used for data transmission, the network card queue pool may be in the form of a data record or a data list, and may also be in other data forms, which is not limited herein.
In a specific implementation, in an optional implementation manner provided in this specification, the at least two network card queues are created in the following manner:
determining queue sending port information according to a preset port selection rule;
updating the queue port information according to the queue sending port information;
and creating at least two network card queues based on the queue address information and the queue port information.
Specifically, the preset port selection rule may be that an unoccupied port number is randomly selected in a preset port interval, or a port number is selected according to the size of the port number, or the like, and in addition, the port number may also be designated as the sending port information of the network card queue.
It should be noted that, in the case of determining the opposite communication end (i.e., the receiving end), since the source IP address of the sending end, the target IP address of the receiving end, and the target port number are already determined, different network card queues communicating with the same receiving end, that is, network card queues belonging to the same network card queue pool that are created, may be created by configuring different source port numbers for the network card queues, and except for different source port numbers, other queue address information and queue port information are the same.
In practical application, after the network card queue is created, a queue identifier for uniquely identifying the network card queue can be created for the network card queue.
In the embodiment of the present description, at least two network card queues are created by determining different source port numbers, so that network card queues (i.e., network connections) that are backup with each other are formed, the failure recovery efficiency is improved, and the stability of data transmission is improved.
And 106, associating the at least two network card queues with the network card queue pool to serve as the network card queues of the network card queue pool.
Specifically, the association method for associating the at least two network card queues with the network card queue pool is various, for example, a label of a corresponding network card queue pool is added to each network card queue, or a correspondence between the at least two network card queues and the network card queue pool may also be recorded, which is not limited herein.
In a specific implementation, in an optional implementation manner provided in this specification, the associating the at least two network card queues with the network card queue pool to serve as the network card queue of the network card queue pool is specifically implemented in the following manner:
associating the at least two network card queues with the network card queue pool to serve as network card queues of the network card queue pool;
and selecting the first network card queue from the at least two network card queues according to a preset selection rule.
The preset selection rule refers to a preset selection rule for a network card queue for data transmission, specifically, the preset selection rule may be a random selection rule, or a selection rule according to a size of a queue identifier, and the like, and is not limited herein, and in practical application, the purpose of selecting the first network card queue is as follows: the first network card queue is used as a main network card queue, that is, if the network interface network card queue in the network card queue pool is needed to transmit data, the first network card queue is preferentially adopted to transmit data, and other network card queues in the network card queue pool are used as a backup network card queue under the condition that the first network card queue fails to transmit data.
In specific implementation, after the first network card queue is selected, the first network card queue may be marked, or the queue identifier of the first network card queue is recorded, so that the first network card queue is directly determined from the network card queue pool in the subsequent process of data transmission through the network card queue in the network card queue pool.
In the embodiment of the specification, the first network card queue is selected in advance from the network card queues in the network card queue pool for data transmission, and other network card queues in the network card queue pool are used as backup network card queues, so that the situation that different network card queues are determined before data transmission each time for data transmission is avoided, the stability of data transmission is ensured, and the other network card queues are used as backup network card queues of the first network card queue, and the situation that data transmission is interrupted for a long time is greatly avoided.
Because the purpose of creating the network card queue is to perform data transmission, in an optional implementation manner provided in this description embodiment, after creating the network card queue pool and creating the network card queue of the network card queue pool, the method further includes:
a transmission request for target data is received.
Determining a first network card queue from the network card queues of the network card queue pool according to the transmission request, and performing data transmission on the target data through the first network card queue;
and modifying the network card queue corresponding to the transmission request into a target network card queue under the condition that a receiving response aiming at the target data is not received through the first network card queue within a preset time length, and performing data transmission on the target data through the target network card queue, wherein the target network card queue is a network card queue in the network card queue pool except the first network card queue.
The target data can be understood as data to be transmitted; the transmission request comprises a data reading request or a data writing request; specifically, the data reading request may be understood as a request for reading data in a receiving end; a data write request may be understood as a request to write data to a receiving end.
In practical applications, the transmission request may carry data information of target data, and specifically, the data information includes: and determining the target data to be transmitted according to the data information, such as the storage address of the target data and/or the data identifier of the target data.
In a specific implementation, in an optional implementation manner provided in this specification, the determining, according to the transmission request, a first network card queue from the network card queues in the network card queue pool is specifically implemented in the following manner:
determining a network card queue pool corresponding to the queue information according to the queue information carried in the transmission request;
and determining the first network card queue from the network card queues in the network card queue pool.
Specifically, the transmission request carries queue information of the network card queues, such as IP addresses and port numbers of the communication terminal, or identifiers of the network card queue pool, and a network card queue pool can be uniquely determined according to the carried queue information, where the network card queue pool includes at least two network card queues, that is, at least two network card queues are associated with the network card queue pool and serve as the network card queues in the network card queue pool.
Further, after the network card queue pool is determined, a first network card queue in the network card queue pool is determined, specifically, the first network card queue may be determined from the network card queues in the network card queue pool according to a transmission label (used to identify a main network card queue in the network card queue pool) pre-added to the first network card queue, which is not limited herein.
In the embodiment of the present description, the network card queue pool is determined according to the transmission request, and then the first network card queue is determined from the network card queue pool, so that the network card queue for data transmission is selected based on the network card queue pool, so that a backup network card queue for data transmission can be determined based on the network card queue pool under the condition that the first network card queue is disconnected.
In practical application, if the receiving response aiming at the target data is not received after the preset time length is exceeded, the failure of the transmission aiming at the target data is indicated, and a network path corresponding to the first network card queue possibly fails, data transmission is carried out through other network card queues; if a receiving response to the target data is received within a preset time length, which indicates that the transmission to the target data is successful, no operation is performed, where the receiving response may be an Acknowledgement Character (ACK), or another self-defined type of acknowledgement message, which is used to indicate that the receiving end receives the target data, and no limitation is made here.
In specific implementation, the mode of modifying the network card queue corresponding to the transmission request into the target network card queue is various, and the mode may be to modify a tag or data used for marking the first network card queue as a main network card queue for data transmission, for example, remove a transmission tag (for marking the main network card queue for data transmission) corresponding to the first network card queue, add the transmission tag to the target network card queue, or mark the first network card queue as a data record of the main network card queue, update the data record marking the target network card queue as the main network card queue, and the like, which is not limited herein.
It should be noted that, data in the same network card queue (e.g. QP) may pass through a plurality of continuous fixed switch paths on the network, that is, a network Path (denoted as Path < s1.. Sn >) reaches a receiving end (an opposite end node), that is, if a network failure such as a port black hole, MMU congestion, persistent packet loss, or unavailable switch occurs in a switch Si in the middle of the Path < s1.. Sn >, data in the same network card queue (e.g. QP) may not reach a remote end until the switch Si in the Path < s1.. Sn > recovers service, the network card queue (e.g. QP) may not be continuously used to send and receive data on the network Path < s1.. Sn >. The failure recovery of the switch is usually at the level of minutes, at this time, the original network card queue (such as QP) is disconnected due to the timeout of data ACK, both communication parties have to reestablish the network card queue (such as QP) connection, at this time, if the newly-reestablished message continues to pass through the failure Path < s1.. Sn >, the new round of connection timeout occurs and the connection fails, so that the next round of connection is established, after the connection is successfully established, the network card queue (such as QP) used for communication still selects one port from two network ports at random as a new fixed Path because the network card selects one port as a new fixed Path, and sends data to the upper-level switch, at this time, the network card queue continues to pass through the failure Path < s1.. Sn > at a certain probability, the process of connection disconnection and connection timeout is started again, the time of successful connection is usually at the level of seconds, the time of connection timeout is usually at the level of ten seconds, and the time of data timeout is usually at the, repeated incoming failure paths may experience lengthy setup waits and timeout retries, which may cause significant service unavailability problems for upper layer applications. Therefore, when an upper layer application encounters a switch failure while communicating with a peer node using a network card queue (such as QP), the service quality of the upper layer is greatly affected.
The switch in the network path performs hash operation according to five tuples (source IP address, source port, destination IP address, destination port and transport layer protocol) of the transmission connection (i.e. network card queue), so as to determine the next hop switch of the switch, and the source port information corresponding to different network card queues is different, so that the network path corresponding to each network card queue is different, therefore, when the network path corresponding to the first network card queue fails, the network card queue can be switched to replace the network path, thereby avoiding the failed network device and smoothly performing data transmission.
On the basis of the first network card queue determined from the network card queue pool, correspondingly, modifying the network card queue corresponding to the transmission request into a target network card queue, specifically adopting the following method:
and determining a target network card queue from the network card queues in the network card queue pool, and modifying the network card queue corresponding to the transmission request into the target network card queue.
In practical applications, the manner of determining the target network card queue from the network card queues in the network card queue pool is also diversified, one network card queue can be randomly determined as the target network card queue from the network card queues included in the network card queue pool, except for the first network card queue, and in addition, according to the network ports corresponding to the first network card queue, the network card queue corresponding to the same network port in the network card queue pool can be determined as the target network card queue, which is not limited herein.
The network port may be understood as an external connection interface of a network device (such as a network card), each network port has a corresponding network port identifier (e.g., a network port number), specifically, for example, 0, 1, or port0, port1, and in a specific implementation, a network card queue and a network port have a corresponding relationship, and when data transmission is performed through a network card queue, transmitted data may be sent from the network port corresponding to the network card queue to a receiving end, where the network port identifier refers to an identifier of a network port that can uniquely identify one network card.
In the embodiment of the present description, the target network card queue is determined from the network card queue pool, so that a new network card queue is prevented from being created again, and the efficiency of recovering data transmission is improved.
As shown in fig. 2, the sending end and the receiving end perform data communication, the network cards of the sending end and the receiving end both have two network ports, the network ports of the two network ports are respectively identified as Port0 and Port1, the network card queue pool (i.e. virtual network card queue VQP) created at the sending end includes 4 QPs, which are respectively QP1, QP2, QP3 and QP4, wherein QP1 is a first network card queue (i.e. main network card queue) and performs data transmission with the receiving end, and the network ports corresponding to QP1 and QP3 are network ports Port0, QP2 and QP4 are network ports Port1, wherein a network Port0 of the sending end is connected to a switch 1 (e.g. access layer switch), another eight switches are connected to switch 1, switch 11 and switch 12 … … switch 18, and a network Port1 of the sending end is connected to a switch 2 (e.g. access layer switch), switch 2 is also connected to switch, and eight switches 21 are respectively connected to switch, switch 22 … … switch 28, which are connected to switch 3 or switch 4 respectively, switch 3 is connected to network Port0 of the receiving end, switch 4 is connected to network Port1 of the receiving end, when switch 11 fails, the network card queue of the sending end and the receiving end is changed from QP1 to QP2, that is, QP2 is used as the main network card queue, and data transmission is performed with the receiving end through QP 2.
Further, because a backup network card queue exists in the network card queue pool, in an optional implementation manner provided in this description, the method for creating a network card queue in an RDMA network further includes:
sending heartbeat signals through any network card queue except the first network card queue in the network card queue pool according to a preset time interval;
and deleting any network card queue under the condition that a receiving response aiming at the heartbeat signal is not received through any network card queue within a preset time length.
The preset time interval refers to a preset time interval for sending the heartbeat signal, such as 10 seconds, 2 seconds, and the like, and is not limited herein. The heartbeat signal is that a small data packet, such as 64 bytes, is sent to the other interconnected party at intervals, and whether a communication link (namely a network card queue) between the two interconnected parties is disconnected or not can be judged through the reply condition of the other party; any network card queue except the first network card queue in the network card queue pool can be understood as a backup network card queue (backup connection) in the network card queue pool, and in specific implementation, the backup network card queues can form a backup network card queue set for performing unified management on the backup network card queues.
Specifically, the preset duration refers to a preset longest duration for receiving the response. The receiving response may be an Acknowledgement Character (ACK), or may be a self-defined other type of acknowledgement message, which is used to indicate that the receiving end receives the heartbeat information, and is not limited herein.
Further, if the receiving response to the heartbeat signal is not received after the preset time length is exceeded, indicating that the transmission to the heartbeat signal fails, a transmission path corresponding to any network card queue may have a fault, that is, indicating that any network card queue is unavailable, and deleting any network card queue; if the receiving response aiming at the heartbeat signal is received within the preset time length, the success of the transmission aiming at the heartbeat signal is indicated, namely the transmission of the transmission path (namely any network card queue) between the sending end and the receiving end is normal, and no operation is required.
It should be noted that the transmission Path may be understood as a network Path through which data transmission is performed, for example, the network Path is Path < S1, S2 … … Sn >, where S1, S2, and Sn respectively represent switches that pass from a sending end to a receiving end during data transmission, and a heartbeat signal is sent through a network card queue (backup connection) in a network card queue pool, so as to detect whether a failure occurs in the network Path < S1, S2 … … Sn > through which the backup connection passes.
In the embodiment of the present specification, a heartbeat signal is sent through a backup network card queue in a network card queue pool, and it is determined whether the backup network card queue receives a reception response of the heartbeat signal, so as to determine whether a backup network card queue (i.e., backup network connection) between two communication parties is disconnected, and if the backup network card queue is disconnected, the disconnected network card queue is deleted, so as to ensure that the backup network card queues in the network card queue pool are all available.
After determining the target network card queue, in a first optional implementation manner provided by the embodiment of this specification, after modifying the network card queue corresponding to the transmission request into the target network card queue, the method further includes:
deleting the first network card queue;
creating a second network card queue based on the queue information corresponding to the network card queue pool;
and associating the second network card queue with the network card queue pool to serve as the network card queue of the network card queue pool.
In practical application, if the first network card queue fails to transmit data, which may be due to a failure of a switch in a network path corresponding to the first network card queue, an available target network card queue is determined from the network card queue pool for performing data transmission through the target network card queue, and the unavailable first network card queue may be directly deleted.
And a new network card queue (i.e., a second network card queue) is created instead of the deleted first network card queue.
In the embodiment of the present description, after the data transmission network card queue is modified into the target network card queue, the first network card queue is deleted, and the network card queue pool is expanded by newly creating the second network card queue, so that the number of network card queues serving as backups in the network card queue pool is ensured, and the stability of data transmission is increased.
In a second optional implementation manner provided by the embodiment of this specification, after modifying the network card queue corresponding to the transmission request into a target network card queue, the method further includes:
deleting the incidence relation between the first network card queue and the network card queue pool;
and associating the first network card queue with the network card queue pool as a network card queue of the network card queue pool under the condition of receiving a recovery instruction aiming at the first network card queue.
Specifically, deleting the association relationship between the first network card queue and the network card queue pool can be understood as removing the first network card queue from the network card queue pool, and then, when data transmission is performed, the first network card queue is not selected from the network card queue pool.
The recovery instruction can be understood as a recovery completion instruction for a failure path corresponding to the first network card queue, and the first network card queue is added to the network card queue pool to become a network card queue backed up in the network card queue pool when the recovery instruction is received.
It should be noted that, in the case of a switch failure, more than one network card queue may be unavailable, the available network card queues are restored, and the network card queues are added to the network card queue pool, so that the number of network card queues serving as backups in the network card queue pool is ensured, and the stability of data transmission is increased.
In practical applications, since the network card queues need to pass through a physical network port in the process of data transmission, in an optional implementation manner provided in this specification, after the creating at least two network card queues, the method further includes:
distributing corresponding network ports to the at least two network card queues according to a preset network port distribution rule;
correspondingly, the performing data transmission on the target data through the first network card queue includes:
the target data is transmitted from the network port corresponding to the first network card queue through the first network card queue;
correspondingly, the performing data transmission on the target data through the target network card queue includes:
and transmitting the target data from the network port corresponding to the target network card queue through the target network card queue.
The network port allocation rule may be that network ports are sequentially allocated according to a network port circulation manner, for example, there are two network ports: the network Port0 and the network Port1 distribute network Port0 for the first created network card queue, distribute network Port1 for the second created network card queue, and distribute network Port0 for the third network card queue, and so on; in addition, the network ports may be allocated proportionally, or allocated by specifying the network ports, etc., without limitation.
In practical application, different network ports (such as 1, 0, 1, 0, 1 …) can be allocated to each network card queue (such as QP), that is, two adjacent network card queues (such as QP) numbered in the network card queue pool (which can be understood as a queue identifier) use network ports with different numbers, so that the two network card queues (such as QP) pass through different uplink switches and thus pass through different network paths Path < s1.. Sn >.
Further, in an optional implementation manner provided by the embodiment of this specification, the performing data transmission on the target data through the first network card queue includes:
the target data is transmitted from the network port corresponding to the first network card queue through the first network card queue;
correspondingly, the performing data transmission on the target data through the target network card queue includes:
the target data is transmitted from the network port corresponding to the target network card queue through the target network card queue;
correspondingly, the creating a second network card queue based on the queue information corresponding to the network card queue pool includes:
creating a second network card queue based on the queue information corresponding to the network card queue pool;
and distributing the network port corresponding to the first network card queue to the second network card queue as the network port corresponding to the second network card queue.
Specifically, the data transmission of the target data from the network port corresponding to the first network card queue may be understood as sending the target data from the network port corresponding to the first network card queue to the sending end, that is, when determining which network card queue to perform data transmission, it is also determined from which network card queue to send the data.
In practical application, after the second network card queue is created, the network ports corresponding to the first network card queue are allocated to the newly created second network card queue, so that the balance of the network ports corresponding to the network card queues in the network card queue pool is maintained, and the flow balance of each network port of the sending end is promoted.
To sum up, the present specification provides a network card queue creating method in an RDMA network, including: receiving a queue creating request, wherein the queue creating request carries queue address information and queue port information; according to the queue address information and the queue port information, a network card queue pool and at least two network card queues corresponding to the queue creation request are created; the at least two network card queues are associated with the network card queue pool and serve as the network card queues of the network card queue pool, the network card queue pool and the at least two network card queues associated with the network card queue pool are created based on the queue creation request, so that the network card queue for data transmission is switched to another network card queue in the network card queue pool under the condition that data transmission is overtime, data transmission from a fault path corresponding to the network card queue for transmission overtime is avoided, a new network card queue does not need to be created again, and the fault recovery efficiency is improved.
The following description further explains the network card queue creating method in the RDMA network by taking an application of the network card queue creating method in the RDMA network provided in this specification in an RDMA network transmission scenario as an example, with reference to fig. 3. Fig. 3 shows a processing flow chart of a network card queue creating method applied in an RDMA network transmission scenario according to an embodiment of the present specification, which specifically includes the following steps:
Specifically, the RDMA queue creation request refers to a creation request for requesting creation of an RDMA network card queue, where the RDMA network card queue refers to a transmission queue supporting an RDMA protocol.
In practical applications, a data center network can provide data transmission of an RDMA network by using a RoCE protocol, while the current data center network mainly adopts a RoCEv2 protocol in the RoCE protocol to provide a high-performance RDMA network transmission service upwards, and for an upper-layer application, a QP (one RDMA network connection) is usually used for data communication with a receiving end, and the connection is usually long, so that the application does not disconnect actively.
And step 304, creating a network card queue pool corresponding to the RDMA queue creation request according to the queue address information and the queue port information.
And 310, selecting a first network card queue from the at least two RDMA network card queues according to a preset selection rule.
Specifically, the backup RDMA network card queues in the network card queue pool except the first network card queue need to periodically perform connection test (heartbeat keep alive) to ensure that the RDMA network card queues in the network card queue pool are all available, and the method is specifically implemented by the following steps:
sending heartbeat signals through any network card queue except the first network card queue in the network card queue pool according to a preset time interval;
and deleting any network card queue under the condition that a receiving response aiming at the heartbeat signal is not received through any network card queue within a preset time length.
At step 312, a transmission request for the target data is received.
And 320, performing data transmission on the target data through the target network card queue.
To sum up, the present specification provides a network card queue creating method in an RDMA network, including: receiving a queue creating request, wherein the queue creating request carries queue address information and queue port information; according to the queue address information and the queue port information, a network card queue pool and at least two network card queues corresponding to the queue creation request are created; the at least two network card queues are associated with the network card queue pool and serve as the network card queues of the network card queue pool, the network card queue pool and the at least two network card queues associated with the network card queue pool are created based on the queue creation request, so that the network card queue for data transmission is switched to another network card queue in the network card queue pool under the condition that data transmission is overtime, data transmission from a fault path corresponding to the network card queue for transmission overtime is avoided, a new network card queue does not need to be created again, and the fault recovery efficiency is improved.
An embodiment of a device for creating a network card queue in an RDMA network provided in this specification is as follows:
corresponding to the foregoing method embodiment, the present specification further provides an embodiment of a device for creating a network card queue in an RDMA network, and fig. 4 shows a schematic diagram of the device for creating a network card queue in an RDMA network, provided in an embodiment of the present specification. As shown in fig. 4, the apparatus includes:
a receiving module 402, configured to receive a queue creation request, where the queue creation request carries queue address information and queue port information;
a creating module 404, configured to create a network card queue pool and at least two network card queues corresponding to the queue creating request according to the queue address information and the queue port information;
the associating module 406 is configured to associate the at least two network card queues with the network card queue pool, and serve as the network card queue of the network card queue pool.
Optionally, the network card queue creating device in the RDMA network further includes:
a receive request module configured to receive a transmission request for target data;
the transmission module is configured to determine a first network card queue from the network card queues in the network card queue pool according to the transmission request, and transmit the target data through the first network card queue;
and the modification module is configured to modify a network card queue corresponding to the transmission request into a target network card queue under the condition that a receiving response aiming at the target data is not received through the first network card queue within a preset time length, and perform data transmission on the target data through the target network card queue, wherein the target network card queue is a network card queue in the network card queue pool except the first network card queue.
Optionally, the transmission module is further configured to:
determining a network card queue pool corresponding to the queue information according to the queue information carried in the transmission request;
determining the first network card queue from the network card queues in the network card queue pool;
accordingly, the modification module is further configured to:
and determining a target network card queue from the network card queues in the network card queue pool, and modifying the network card queue corresponding to the transmission request into the target network card queue.
Optionally, the associating module 406 is further configured to:
associating the at least two network card queues with the network card queue pool to serve as network card queues of the network card queue pool;
and selecting the first network card queue from the at least two network card queues according to a preset selection rule.
Optionally, the device for creating a network card queue in an RDMA network further includes:
the sending module is configured to send a heartbeat signal through any network card queue except the first network card queue in the network card queue pool according to a preset time interval;
and the first deleting module is configured to delete any network card queue under the condition that a receiving response aiming at the heartbeat signal is not received through any network card queue within a preset time length.
Optionally, the network card queue creating device in the RDMA network further includes:
the second deleting module is configured to delete the first network card queue;
the queue creating module is configured to create a second network card queue based on the queue information corresponding to the network card queue pool;
and the second association module is configured to associate the second network card queue with the network card queue pool as a network card queue of the network card queue pool.
Optionally, the network card queue creating device in the RDMA network further includes:
a relation deletion module configured to delete the association relation between the first network card queue and the network card queue pool;
and the third association module is configured to associate the first network card queue with the network card queue pool as a network card queue of the network card queue pool under the condition that a recovery instruction for the first network card queue is received.
Optionally, the creating module 404 is further configured to:
determining queue sending port information according to a preset port selection rule;
updating the queue port information according to the queue sending port information;
and creating at least two network card queues based on the queue address information and the queue port information.
Optionally, the network card queue creating device in the RDMA network further includes:
the distribution module is configured to distribute corresponding network ports to the at least two network card queues according to a preset network port distribution rule;
accordingly, the transmission module is further configured to:
the target data is transmitted from the network port corresponding to the first network card queue through the first network card queue;
accordingly, the modification module is further configured to:
and transmitting the target data from the network port corresponding to the target network card queue through the target network card queue.
Optionally, the transmission module is further configured to:
the target data is transmitted from the network port corresponding to the first network card queue through the first network card queue;
accordingly, the modification module is further configured to:
the target data is transmitted from the network port corresponding to the target network card queue through the target network card queue;
accordingly, the create queue module is further configured to:
creating a second network card queue based on the queue information corresponding to the network card queue pool;
and distributing the network port corresponding to the first network card queue to the second network card queue as the network port corresponding to the second network card queue.
To sum up, the present specification provides a network card queue creating device in an RDMA network, including: receiving a queue creating request, wherein the queue creating request carries queue address information and queue port information; according to the queue address information and the queue port information, a network card queue pool and at least two network card queues corresponding to the queue creation request are created; the at least two network card queues are associated with the network card queue pool and serve as the network card queues of the network card queue pool, the network card queue pool and the at least two network card queues associated with the network card queue pool are created based on the queue creating request, so that the network card queue for data transmission is switched to another network card queue in the network card queue pool under the condition that data transmission is overtime, data transmission from a fault path corresponding to the first network card queue is avoided, a new network card queue does not need to be created again, and the fault recovery efficiency is improved.
The above is an exemplary scheme of the device for creating the network card queue in the RDMA network according to this embodiment. It should be noted that the technical solution of the network card queue creating device in the RDMA network and the technical solution of the network card queue creating method in the RDMA network belong to the same concept, and details of the technical solution of the network card queue creating device in the RDMA network, which are not described in detail, can be referred to the description of the technical solution of the network card queue creating method in the RDMA network.
The present specification provides an embodiment of a computing device as follows:
FIG. 5 illustrates a block diagram of a computing device 500 provided in accordance with one embodiment of the present description. The components of the computing device 500 include, but are not limited to, a memory 510 and a processor 520. Processor 520 is coupled to memory 510 via bus 530, and database 550 is used to store data.
Computing device 500 also includes access device 540, access device 540 enabling computing device 500 to communicate via one or more networks 560. Examples of such networks include the Public Switched Telephone Network (PSTN), a Local Area Network (LAN), a Wide Area Network (WAN), a Personal Area Network (PAN), or a combination of communication networks such as the internet. The access device 540 may include one or more of any type of network interface, e.g., a Network Interface Card (NIC), wired or wireless, such as an IEEE802.11 Wireless Local Area Network (WLAN) wireless interface, a worldwide interoperability for microwave access (Wi-MAX) interface, an ethernet interface, a Universal Serial Bus (USB) interface, a cellular network interface, a bluetooth interface, a Near Field Communication (NFC) interface, and so forth.
In one embodiment of the present description, the above-described components of computing device 500, as well as other components not shown in FIG. 5, may also be connected to each other, such as by a bus. It should be understood that the block diagram of the computing device architecture shown in FIG. 5 is for purposes of example only and is not limiting as to the scope of the present description. Those skilled in the art may add or replace other components as desired.
Computing device 500 may be any type of stationary or mobile computing device, including a mobile computer or mobile computing device (e.g., tablet, personal digital assistant, laptop, notebook, netbook, etc.), mobile phone (e.g., smartphone), wearable computing device (e.g., smartwatch, smartglasses, etc.), or other type of mobile device, or a stationary computing device such as a desktop computer or PC. Computing device 500 may also be a mobile or stationary server.
Wherein processor 520 is configured to execute the following computer-executable instructions:
receiving a queue creating request, wherein the queue creating request carries queue address information and queue port information;
according to the queue address information and the queue port information, a network card queue pool and at least two network card queues corresponding to the queue creation request are created;
and associating the at least two network card queues with the network card queue pool to serve as the network card queues of the network card queue pool.
The above is an illustrative scheme of a computing device of the present embodiment. It should be noted that the technical solution of the computing device and the technical solution of the network card queue creation method in the RDMA network belong to the same concept, and details of the technical solution of the computing device, which are not described in detail, can be referred to the description of the technical solution of the network card queue creation method in the RDMA network.
This specification provides one example of a computer-readable storage medium, comprising:
the present specification provides a computer readable storage medium storing computer instructions that, when executed by a processor, are operable to:
receiving a queue creating request, wherein the queue creating request carries queue address information and queue port information;
according to the queue address information and the queue port information, a network card queue pool and at least two network card queues corresponding to the queue creation request are created;
and associating the at least two network card queues with the network card queue pool to serve as the network card queues of the network card queue pool.
The above is an illustrative scheme of a computer-readable storage medium of the present embodiment. It should be noted that the technical solution of the storage medium and the technical solution of the network card queue creation method in the RDMA network belong to the same concept, and details of the technical solution of the storage medium, which are not described in detail, can be referred to the description of the technical solution of the network card queue creation method in the RDMA network.
The foregoing description has been directed to specific embodiments of this disclosure. Other embodiments are within the scope of the following claims. In some cases, the actions or steps recited in the claims may be performed in a different order than in the embodiments and still achieve desirable results. In addition, the processes depicted in the accompanying figures do not necessarily require the particular order shown, or sequential order, to achieve desirable results. In some embodiments, multitasking and parallel processing may also be possible or may be advantageous.
The computer instructions comprise computer program code which may be in the form of source code, object code, an executable file or some intermediate form, or the like. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, usb disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution medium, and the like. It should be noted that the computer readable medium may contain content that is subject to appropriate increase or decrease as required by legislation and patent practice in jurisdictions, for example, in some jurisdictions, computer readable media does not include electrical carrier signals and telecommunications signals as is required by legislation and patent practice.
It should be noted that, for the sake of simplicity, the foregoing method embodiments are described as a series of acts, but those skilled in the art should understand that the present embodiment is not limited by the described acts, because some steps may be performed in other sequences or simultaneously according to the present embodiment. Further, those skilled in the art should also appreciate that the embodiments described in this specification are preferred embodiments and that acts and modules referred to are not necessarily required for an embodiment of the specification.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
The preferred embodiments of the present specification disclosed above are intended only to aid in the description of the specification. Alternative embodiments are not exhaustive and do not limit the invention to the precise embodiments described. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the embodiments and the practical application, to thereby enable others skilled in the art to best understand and utilize the embodiments. The specification is limited only by the claims and their full scope and equivalents.
Claims (13)
1. A network card queue creating method under an RDMA network comprises the following steps:
receiving a queue creating request, wherein the queue creating request carries queue address information and queue port information;
according to the queue address information and the queue port information, a network card queue pool and at least two network card queues corresponding to the queue creation request are created;
and associating the at least two network card queues with the network card queue pool to serve as the network card queues of the network card queue pool.
2. The method for network card queue creation under RDMA network of claim 1, further comprising:
receiving a transmission request for target data;
determining a first network card queue from the network card queues of the network card queue pool according to the transmission request, and performing data transmission on the target data through the first network card queue;
and modifying the network card queue corresponding to the transmission request into a target network card queue under the condition that a receiving response aiming at the target data is not received through the first network card queue within a preset time length, and performing data transmission on the target data through the target network card queue, wherein the target network card queue is a network card queue in the network card queue pool except the first network card queue.
3. The method for network card queue creation under RDMA network of claim 2, the determining a first network card queue from the network card queues of the network card queue pool according to the transmission request, comprising:
determining a network card queue pool corresponding to the queue information according to the queue information carried in the transmission request;
determining the first network card queue from the network card queues in the network card queue pool;
correspondingly, the modifying the network card queue corresponding to the transmission request into a target network card queue includes:
and determining a target network card queue from the network card queues in the network card queue pool, and modifying the network card queue corresponding to the transmission request into the target network card queue.
4. The method for network card queue creation under RDMA network of claim 1, the associating the at least two network card queues with the network card queue pool as network card queues of the network card queue pool, comprising:
associating the at least two network card queues with the network card queue pool to serve as network card queues of the network card queue pool;
and selecting the first network card queue from the at least two network card queues according to a preset selection rule.
5. The method for network card queue creation under RDMA network of claim 2, further comprising:
sending heartbeat signals through any network card queue except the first network card queue in the network card queue pool according to a preset time interval;
and deleting any network card queue under the condition that a receiving response aiming at the heartbeat signal is not received through any network card queue within a preset time length.
6. The method for creating a network card queue under RDMA network according to any of claims 2 to 5, after modifying the network card queue corresponding to the transmission request into a target network card queue, further comprising:
deleting the first network card queue;
creating a second network card queue based on the queue information corresponding to the network card queue pool;
and associating the second network card queue with the network card queue pool to serve as the network card queue of the network card queue pool.
7. The method for creating a network card queue under RDMA network according to any of claims 2 to 5, after modifying the network card queue corresponding to the transmission request into a target network card queue, further comprising:
deleting the incidence relation between the first network card queue and the network card queue pool;
and associating the first network card queue with the network card queue pool as a network card queue of the network card queue pool under the condition of receiving a recovery instruction aiming at the first network card queue.
8. The method for network card queue creation under RDMA network of claim 1, the at least two network card queues are created by:
determining queue sending port information according to a preset port selection rule;
updating the queue port information according to the queue sending port information;
and creating at least two network card queues based on the queue address information and the queue port information.
9. The method for network card queue creation under RDMA network of claim 2, after creating at least two network card queues, further comprising:
distributing corresponding network ports to the at least two network card queues according to a preset network port distribution rule;
correspondingly, the performing data transmission on the target data through the first network card queue includes:
the target data is transmitted from the network port corresponding to the first network card queue through the first network card queue;
correspondingly, the performing data transmission on the target data through the target network card queue includes:
and transmitting the target data from the network port corresponding to the target network card queue through the target network card queue.
10. The method for network card queue creation under RDMA network of claim 6, the data transmitting the target data through the first network card queue comprising:
the target data is transmitted from the network port corresponding to the first network card queue through the first network card queue;
correspondingly, the performing data transmission on the target data through the target network card queue includes:
the target data is transmitted from the network port corresponding to the target network card queue through the target network card queue;
correspondingly, the creating a second network card queue based on the queue information corresponding to the network card queue pool includes:
creating a second network card queue based on the queue information corresponding to the network card queue pool;
and distributing the network port corresponding to the first network card queue to the second network card queue as the network port corresponding to the second network card queue.
11. A network card queue creation device under an RDMA network, comprising:
the device comprises a receiving module, a queue creating module and a processing module, wherein the receiving module is configured to receive a queue creating request, and the queue creating request carries queue address information and queue port information;
the creating module is configured to create a network card queue pool and at least two network card queues corresponding to the queue creating request according to the queue address information and the queue port information;
and the association module is configured to associate the at least two network card queues with the network card queue pool to serve as the network card queues of the network card queue pool.
12. A computing device, comprising:
a memory and a processor;
the memory is configured to store computer-executable instructions, and the processor is configured to execute the computer-executable instructions to implement the method of:
receiving a queue creating request, wherein the queue creating request carries queue address information and queue port information;
according to the queue address information and the queue port information, a network card queue pool and at least two network card queues corresponding to the queue creation request are created;
and associating the at least two network card queues with the network card queue pool to serve as the network card queues of the network card queue pool.
13. A computer readable storage medium storing computer instructions which, when executed by a processor, implement the steps of the network card queue creation method under RDMA network of any of claims 1 to 10.
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