WO2016015223A1

WO2016015223A1 - Dynamic equilibrium method and apparatus for qos of i/o channel

Info

Publication number: WO2016015223A1
Application number: PCT/CN2014/083225
Authority: WO
Inventors: 祁凯; 王伟; 陈克平
Original assignee: 华为技术有限公司
Priority date: 2014-07-29
Filing date: 2014-07-29
Publication date: 2016-02-04
Also published as: CN105519055A; CN105519055B

Abstract

Provided are a dynamic equilibrium method and apparatus for the QoS of an I/O channel, which relate to the technical field of computers, and an adjustment solution for I/O channel resource usage conditions is provided, which solves the problem that the QoS demand of services cannot be guaranteed. The method comprises: acquiring resource information and SLA information of each I/O channel, inquiring a QoS knowledge base to acquire a standard resource usage parameter corresponding to each I/O channel, then determining an I/O channel the current resource usage conditions of which does not match the standard resource usage parameter by means of comparison, and further instructing a file system to perform resource adjustment on the unmatched I/O channel. The embodiments of the present invention are used for implementing dynamic equilibrium of the QoS of an I/O channel.

Description

I/O channel QoS dynamic equalization method and device

The present invention relates to the field of computer technologies, and in particular, to an I/O channel QoS dynamic equalization method and apparatus.

Background technique

QoS (Quality of Service) security mechanism is used to reasonably plan and allocate network resources according to the characteristics of various network services, so that network resources can be efficiently utilized. SLA (Service Level Agreement) is a mutually agreed agreement between service providers and users to guarantee the performance and reliability of services under certain overhead.

In the prior art, the core processor of the computer system controls the I/O (Input/Output) channel when the data needs to be read/write (Read/Write) during the process running. Accessing the memory enables reading or writing of data. In order to meet the performance and reliability requirements of data transmission, an SLA can be set for the I/O channel to meet the service requirements, so as to control the I/O channel according to the requirements specified by the SLA, so as to ensure the data transmission of the I/O channel. QoS.

However, although different SLAs are set for multiple I/O channels, in the actual operation of the I/O channel, the resource usage of each I/O channel tends to change greatly due to changes in the running service status. Deviation from the set SLA causes the utilization of each I/O channel resource to fail to meet the user's predetermined requirements, and thus the QoS of the I/O channel for data transmission cannot be guaranteed.

Summary of the invention

The embodiment of the present invention provides an I/O channel QoS dynamic equalization method and device, which is used to solve the problem that the resource utilization of the I/O channel is reduced due to the change of the service running state, and the QoS requirement of the service cannot be guaranteed.

In order to achieve the above object, the embodiment of the present invention adopts the following technical solutions:

In a first aspect, an I/O channel QoS dynamic equalization method is provided, including: Receiving resource information sent by the file system indicating the current resource usage of each I/O channel, and SLA information indicating the service level agreement SLA set by each I/O channel; querying the QoS knowledge base, according to each I/O The SLA information of the channel is matched with the standard resource usage parameter corresponding to the SLA set by each I/O channel; wherein, the QoS knowledge base pre-stores standard resource usage parameters corresponding to each SLA; Corresponding standard resource usage parameters, comparing the SLA information of each I/O channel, the resource information, and determining an I/O channel that does not match the current resource usage parameter and the standard resource usage parameter;

And sending an instruction to the file system, so that the file system adjusts resource usage of the unmatched I/O channel according to a standard resource usage parameter corresponding to the SLA.

With reference to the first aspect, in a first possible implementation, the resource information that is sent by the receiving file system and indicates the current resource usage of each I/O channel, and the service that is set for each I/O channel are set. Before the SLA information of the SLA, the method further includes: sending a situation request message to the file system, where the request message is used to instruct the file system to feed back the resource information and the SLA information of each I/O channel.

With reference to the first possible implementation manner of the first aspect, in a second possible implementation manner, the receiving file system sends resource information indicating current resource usage of each I/O channel, and represents each I The SLA information of the service level agreement SLA set by the /O channel includes:

Receiving, by the file system, the situation request message, according to the indication of the situation request message, the current resource usage on each I/O channel is collected by the underlying hardware, and the resource information of each I/O channel is obtained. After the SLA information is sent and fed back, the resource information and the SLA information are received.

With reference to the first aspect, in a third possible implementation, the querying the QoS knowledge base, according to the SLA information of each I/O channel, matching the SLA corresponding to each I/O channel Standard resource usage parameters include:

Constructing, according to the SLA information of each I/O channel, a query request message corresponding to each I/O channel, where the query request message includes the SLA information corresponding to the I/O channel; And sequentially querying, according to each of the query request messages, the QoS knowledge base, a query reply message corresponding to each of the query request messages, where the query reply message includes the SLA information of the corresponding I/O channel in the The corresponding standard resource usage parameter in the QoS knowledge base.

With reference to the first aspect, in a fourth possible implementation, the determining, according to the standard resource usage parameter corresponding to each SLA, the SLA information and the resource information of each I/O channel, determining a current resource. I/O channels whose usage does not match the standard resource usage parameters include:

Obtaining the parameter items included in the corresponding resource information of each I/O channel;

Comparing the parameter items corresponding to each I/O channel with the standard resource usage parameters corresponding to the I/O channel;

An I/O channel whose value of the parameter item is greater than a value corresponding to the standard resource usage parameter is determined as an unmatched I/O channel.

The second aspect provides an I/O channel QoS dynamic equalization apparatus, including: a receiving unit, configured to receive resource information sent by a file system and indicate current resource usage of each I/O channel, and represent each I/O SLA information of the service level agreement SLA set by the channel;

a query unit, configured to query a QoS knowledge base, and match, according to the SLA information of each I/O channel, a standard resource usage parameter corresponding to an SLA set by each I/O channel; wherein, the QoS knowledge base Pre-stored standard resource usage parameters corresponding to each SLA;

And an obtaining unit, configured to compare, according to the standard resource usage parameter corresponding to each SLA, the SLA information and the resource information of each I/O channel, and determine that the current resource usage does not match the standard resource usage parameter. O channel;

And an indication unit, configured to send an instruction to the file system, so that the file system adjusts resource usage of the unmatched I/O channel according to a standard resource usage parameter corresponding to the SLA.

With reference to the second aspect, in a first possible implementation, the method further includes: a requesting unit, configured to receive, by the receiving unit, a representation sent by a file system a resource request information of the current resource usage of the I/O channel, and a SLA information indicating a service level agreement SLA set by each I/O channel, and sending a situation request message to the file system, where the situation request message is used to indicate the The file system feeds back the resource information and the SLA information for each I/O channel.

With reference to the first possible implementation of the second aspect, in a second possible implementation manner, the receiving unit is specifically configured to:

In conjunction with the second aspect, in a third possible implementation, the query unit is specifically configured to:

Configuring, according to the SLA information of each I/O channel, a query request message corresponding to each I/O channel, where the query request message includes the SLA information corresponding to the I/O channel;

And sequentially querying, according to each of the query request messages, the QoS knowledge base, a query reply message corresponding to each of the query request messages, where the query reply message includes the SLA information of the corresponding I/O channel in the The corresponding standard resource usage parameter in the QoS knowledge base.

With reference to the second aspect, in a fourth possible implementation, the acquiring unit is specifically configured to:

In a third aspect, an I/O channel Qo S dynamic equalization apparatus is provided, including: a bus, and a processor, a memory, and an interface connected to the bus; the memory is configured to store an instruction; Instructions are used to: Receiving resource information sent by the file system indicating the current resource usage of each I/O channel, and SLA information indicating the service level agreement SLA set by each I/O channel; querying the QoS knowledge base, according to each I/O The SLA information of the channel is matched with the standard resource usage parameter corresponding to the SLA set by each I/O channel; wherein, the QoS knowledge base pre-stores standard resource usage parameters corresponding to each SLA; Corresponding standard resource usage parameters, comparing the SLA information of each I/O channel, the resource information, and determining an I/O channel that does not match the current resource usage parameter and the standard resource usage parameter;

With reference to the third aspect, in a first possible implementation, the resource information that is sent by the receiving file system and indicates the current resource usage of each I/O channel, and the service that is set for each I/O channel are set. Before the SLA information of the level agreement SLA, the processor executes the instruction specifically for:

Sending a situation request message to the file system, the situation request message is used to instruct the file system to feed back the resource information and the SLA information of each I/O channel.

In conjunction with the first possible implementation of the third aspect, in a second possible implementation manner, the executing the instruction by the processor is specifically used to:

With reference to the third aspect, in a third possible implementation, the executing the

And traversing the QoS knowledge base according to each of the query request messages, and obtaining a query reply message corresponding to each of the query request messages, the query reply message The SLA information including the corresponding I/O channel corresponds to the standard resource usage parameter in the QoS knowledge base.

With reference to the third aspect, in a fourth possible implementation, the executing, by the processor, the

It can be seen that the embodiment of the present invention provides an I/O channel QoS dynamic equalization method and device. By acquiring resource information and SLA information of each I/O channel, querying the QoS knowledge base to obtain each I/O channel is set. After determining the standard resource usage parameter corresponding to the SLA, the comparison determines the current resource usage and the standard resource usage parameter does not match the I/O channel, and further instructs the file system to perform resource adjustment on the unmatched I/O channel. In this way, the resources of the I/O channel can be adjusted according to different SLA requirements, which solves the problem that the utilization of the channel resources is reduced due to changes in service status during the data transmission process of the I/O in the prior art. The Qo S requirements cannot be guaranteed. Therefore, the embodiment of the present invention ensures the configuration requirements of various aspects of the user service and the QoS balance between the I/O channels, and improves the performance of the I/O channel, compared with the prior art. DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any creative work.

1 is a schematic structural diagram of a SLA-based multi-I/O channel computer system; FIG. 2 is a schematic flowchart 1 of an I/O channel QoS dynamic equalization method according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of an QoS dynamic balancing method for an I/O channel according to an embodiment of the present invention; Process diagram 2;

4 is a schematic flowchart 3 of an I/O channel QoS dynamic equalization method according to an embodiment of the present invention;

FIG. 5 is a schematic flowchart 4 of an I/O channel QoS dynamic equalization method according to an embodiment of the present disclosure;

6 is a schematic structural diagram 1 of an I/O channel QoS dynamic equalization apparatus according to an embodiment of the present invention;

FIG. 7 is a schematic structural diagram 2 of an I/O channel QoS dynamic equalization apparatus according to an embodiment of the present disclosure;

FIG. 8 is a schematic structural diagram 3 of an I/O channel QoS dynamic equalization apparatus according to an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

The method provided by the embodiment of the present invention can be applied to a computer system based on an SLA (Service Level Agreement) multiple I/O (Input/Output) channel. The structure of the system is as shown in FIG. 1 . It is shown that the kernel processor in the computer system implements a read/write operation (Read/Write) operation on each user business process initiated by the user terminal, mainly through each I/O channel between the kernel processor and the memory. Read or write data. On the one hand, a corresponding user SLA requirement (ie, resource usage required by the service) is set for each user service, and the user SLA requirement is used to set resource control required for the service for the I/O channel used by the service. The solution, such as some parameters set for resource usage, includes: SLA demand level (SLA_level), channel processing capability (SLA_iops), channel amount (SLA_bps), monthly service status (SLA_server), etc.; On the other hand, the corresponding SLA information, such as the SLA name (SLA Name), is set for each I/O channel, and the I/O channel is not used for data transmission. The same SLA name is index, which corresponds to different user SLA requirements, that is, different I/O channels are responsible for processing the user service that sets the corresponding user SLA requirements, and thus can be processed by the file system in the kernel processor, according to each user. The user SLA requirement set by the service implements the allocation and adjustment of the resources on the I/O channel, so that each user service can use the corresponding resource configuration in the corresponding I/O channel according to the preset indication of the corresponding user SLA requirement. Therefore, the resource utilization of the multiple I/O channels can meet the preset requirements, and QoS (Quality of Service) is thereby guaranteed. The correspondence between different user services and user SLA requirements, and the correspondence between each I/O channel and SLA information can be controlled by a SLA I/O QoS monitoring module (Monitor) provided by the computer system, and each user SLA needs corresponding resources. The standard resource usage parameters in the control scheme can be stored by the system to build a QoS knowledge base.

An embodiment of the present invention provides an I/O channel QoS dynamic equalization method. As shown in FIG. 2, the method includes:

5101. Receive resource information sent by the file system indicating current resource usage of each I/O channel, and SLA information indicating a service level agreement SLA set by each I/O channel.

The resource information of each I/O channel is used to indicate the current resource usage of the I/O channel, and may include: an SLA requirement level, channel processing capability information, channel traffic information, service status information, and the like; The SLA information of the /O channel is used to indicate the SLA set for the I/O channel, which may be: SLA name.

In an implementation manner, before receiving the resource information and the SLA information of each of the I/O channels, the situation request message may be sent to the file system, where the request message is used to instruct the file system to feed back each I/O channel. Resource information and SLA information.

Optionally, the request information message may be received in the file system, and the current resource usage on each I/O channel is collected by the underlying hardware according to the indication of the situation request message, and the resource information and the SLA information of each I/O channel are obtained. After the feedback is sent, the resource information and the SLA information are received.

5102. Query the QoS knowledge base, and according to the SLA information of each I/O channel, match the standard resource usage parameters corresponding to the SLA set by each I/O channel. The standard resource usage parameter corresponding to each SLA is pre-stored in the QoS knowledge base, and the standard resource usage parameter may include: a standard SLA requirement level, standard channel processing capability information, and standard channel traffic information.

In an implementation manner, the query request message corresponding to each I/O channel may be constructed according to the SLA information of each I/O channel, where the query request message includes SLA information corresponding to the I/O channel;

According to each query request message, the QoS knowledge base is traversed to obtain a query reply message corresponding to each query request message, where the query reply message includes the SLA information of the corresponding I/O channel and the corresponding standard resource used in the QoS knowledge base. parameter.

5103. Determine, according to the standard resource usage parameter corresponding to each SLA, the SLA information and resource information of each I/O channel, and determine an I/O channel whose current resource usage does not match the standard resource usage parameter.

In an implementation manner, the parameter items included in the corresponding resource information of each I/O channel may be obtained;

The I/O channel whose value of the parameter item is greater than the value provided by the standard resource usage parameter is determined as the I/O channel that does not match.

5104. Send an instruction to the file system, so that the file system adjusts resource usage of the unmatched I/O channel according to the standard resource usage parameter corresponding to the SLA.

An embodiment of the present invention provides an I/O channel QoS dynamic equalization method. By obtaining resource information and SLA information of each I/O channel, the QoS knowledge base is queried to obtain an SLA corresponding to each I/O channel. After the standard resource uses the parameter, the comparison determines the I/O channel that the current resource usage does not match the standard resource usage parameter, and further instructs the file system to perform resource adjustment on the above-mentioned mismatched I/O channel. In this way, the problem that the channel resource utilization is reduced and the QoS requirements of the service cannot be guaranteed due to the change of the service state during the data transmission process of the I/O is solved, and the configuration requirements and the I/O channel of the user service are ensured. QoS balancing improves I/O channel performance. In order to enable a person skilled in the art to more clearly understand the technical solutions provided by the embodiments of the present invention, an I/O channel QoS dynamic equalization method provided by an embodiment of the present invention is described in detail below through specific embodiments, and it is worth mentioning. The embodiments provided below are merely examples, and implementations of the present invention are not limited thereto. As shown in Figure 3, the method includes:

S201. The QoS dynamic equalization apparatus sends a situation request message to the file system.

Specifically, the Qo S dynamic equalization device sends a corresponding situation request message corresponding to each I/O channel to the file system, and is used to request to acquire the current state of each I/O channel.

The QoS dynamic balancing device may be an SLA I/O QoS monitoring module, and the QoS monitoring module may be part of a corresponding function in the computer system, or may be an independent device, which is not limited herein; The software mechanism module responsible for managing and storing file information can be part of the kernel processor in the computer system and controlled by the kernel processor to interact with the user to control resource usage of each I/O channel.

The status request message corresponding to each I/O channel may include SLA information corresponding to the requested I/O channel, and the SLA information is used to index the I/O channel according to the SLA setting relationship of the I/O channel, which may be SLA name. The above situation request message is used to indicate that the SLA name in the file system feedback information indicates the required information of the I/O channel.

The corresponding relationship between the I/O channel and the SLA information may be preset and stored in the Qo S dynamic equalization device. The specific correspondence may be adjusted according to user selection or application scenario requirements. .

Optionally, the request message may further include: a message type, a memory address bit number, a message identifier, a data storage address, etc., and the format of the message may be as follows:

I/O Channel Usage Information Message

Header

Message Ty e: I/O Channel Usage Information

Length: 32

Transaction ID: 0

Channel Name: SLA Name I/O channel Usage Request

Message Ty e: I/O Channel Usage Request Information Channel Name: SLA Name

Body: *usage [4]

Where the "Header" part (ie, the information header): "Message Type: I/O Channel Usage Information" indicates that this information is used to interact with the channel usage of the specified I/O channel; "Length" indicates that the number of memory addresses is "32"; "Transaction ID" indicates that the message identifier is "0"; "Channel Name" indicates the SLA name corresponding to the selected I/O channel.

In the "I/O channel Usage Request" section: "Message Type : I/O Channel Usage Request Information" is used to further indicate that the message is a situation request message; "Channel Name" indicates the SLA name corresponding to the selected I/O channel. , can be the same as in the "Header" section; "Body" indicates the data storage address.

The inclusions shown in the above message format are exemplary only, and the corresponding values or characters (such as "32", "SLA Name", "*usage [4],, etc.) are shown for illustrative purposes only. The specific application varies according to the application scenario, including but not limited to, and is not limited herein.

It is worth mentioning that the Qo S dynamic equalization device can send each situation request message to the file system after receiving the external indication, or periodically send each situation request message to the file system after each preset time interval, and execute For the subsequent operation process, the triggering manners that can be used in the specific application include but are not limited thereto, and are not limited herein.

S202. The QoS dynamic equalization device receives a situation message sent by the file system.

Specifically, after the file system receives the situation request message sent by the QoS dynamic equalization device, constructs a corresponding situation message, and feeds back the situation message to the QoS dynamic equalization device, the Qo S dynamic equalization device receives each file file sent by the Qo S dynamic equalization device. Status message corresponding to the I/O channel.

Each of the situation messages may include: resource information indicating that the message corresponds to the current resource usage of the I/O channel, and SLA information indicating the SLA corresponding to the I/O channel setting of the message, and the SLA information may be an SLA name. Exemplarily, the resource information indicating the current resource usage of the I/O channel may include: IOPS (Input/Output Operations Per Second) information, indicating channel processing capability; Bps ( Bits per The information is used to indicate the data transmission rate of the channel, the priority information, and the like, and some of the parameters listed above are merely exemplary, and may also include other parameters or indicators for indicating channel performance, which are not limited herein.

Optionally, the foregoing situation information may further include: a message type, a number of memory address bits, a message identifier, parameter data, and the like, and the format of the message may be as follows:

I/O Channel Usage Information Message

Header

Message Type: I/O Channel Usage Information

Length: 32

Transaction ID: 0

Channel Name: SLA Name

I/O channel Usage Reply

Message Type: I/O Channel Usage Reply Information

Channel Name: SLA Name

Body:

SLA_ level: priority

SLA—iops: Avg_min_iops I Avg—max—iops

SLA— bps: Avg_min_bps I Avg—max— bps

SLA— server: iops— usage— rate I bps— usage— rate I Time— period where the “Header” part is the same as the above request message, and will not be described here; “I/O channel Usage Reply” "Message Type: I/O Channel Usage Reply Information" is used to further indicate that the information is a situation message; "Channel Name" indicates the SLA name corresponding to the selected I/O channel, which can be the same as in the "Header" section, and the situation The request message corresponds to; the "B ody" indicates the parameter data included, including: SLA requirement level SLA_level corresponding to the I/O channel, IOPS information SLA_iops, rate information SLA_bps, and utilization information SLA_server.

The inclusions shown in the above message format are merely exemplary, and the corresponding items are shown. Values or characters, for illustrative purposes only, including but not limited to.

Optionally, after receiving the request information sent by the Qo S dynamic equalization device, the file system obtains a corresponding situation message, as shown in FIG. 4, which may include:

S2021: The file system sends a statistics message corresponding to each I/O channel to the underlying hardware.

After receiving the situation request message sent by the QoS dynamic equalization device, the specific file system requests the message according to each situation, constructs a statistical message corresponding to each I/O channel, and sends the statistics message to the underlying hardware, so that the underlying hardware according to each statistic The message is counted and fed back.

The underlying hardware may be a part of the computer system that performs the corresponding function, or may be a separate storage device, which is not limited herein; may be a hardware storage (such as S SD (Solid State Disk), disk array) Disk Array ) is implemented in the form of multiple I/O channels with the kernel processor.

For example, the foregoing statistical message may include SLA information corresponding to the I/O channel of the requested statistic, and the SLA information is used to index the I/O channel according to the SLA setting relationship of the I/O channel, and may be an SLA name. The statistics message is used to instruct the underlying hardware to count and feed back information about the SLA name indicating the I/O channel resource usage in the message.

Optionally, the statistic message may further include: a message type, a number of memory address bits, a message identifier, a data storage address, and the like, and the format of the message may be as follows:

I/O Channel Usage statistics Information Message

Header

Message Ty e: I/O Channel Usage Information

Length: 32

Transaction ID: 1

Channel Name: SLA Name

I/O channel Usage Statistics Request

Message Ty e: I/O Channel Usage Request Information Channel Name: SLA Name

Body: *usage [3 ]

Where the "Header" part (ie, the information header): "Message Type: I/O Channel Usage Information" indicates that the information is used to interact with the channel usage of the specified I/O channel; "Length" indicates that the number of memory addresses is "32"; "Transaction ID" indicates that the message identifier is "1"; "Channel Name" indicates the SLA name corresponding to the selected I/O channel.

"I/O channel Usage Statistics Request": "Message Ty e: I/O Channel Usage Request Information" is used to further indicate that the information is a statistical message; "Channel Name" indicates the corresponding I/O channel corresponding to The SLA name, which can be the same as in the "Header" section; "Body" indicates the data storage address.

The inclusions shown in the above message format are merely exemplary, and the numerical values or characters corresponding to the items shown are for illustrative purposes only, including but not limited to.

S2022: The underlying hardware feeds back a statistical response message corresponding to each I/O channel to the file system.

Specifically, after receiving the statistics information sent by the file system, the underlying hardware performs statistics on the specified I/O channels in a preset statistical time according to the indication of each statistical message, and obtains a corresponding statistical reply message, and The file system sends each statistical reply message.

The preset statistics time is used to limit the duration of the statistical operation. It can be the default setting of the system or the external input. It is not limited here. The above statistics reply message includes: Indicates the SLA in the statistics message. The resource information of the current resource usage of the I/O channel indicated by the information.

Optionally, the foregoing statistical reply message may further include: a message type, a memory address digit, a message identifier, parameter data, and the like, and the format of the message may be as follows:

I/O Channel Usage statistics Information Message

Header

Message Ty e: I/O Channel Usage Information

Length: 32 Transaction ID: 1

Channel Name: SLA Name

I/O channel

Message Type: I/O Channel Usage Reply Information

Channel Name: SLA Name

B ody:

SLA_ level: priority

SLA_iop s: Avg_min_iops I Avg—max—iops

SLA— bps: Avg_min_bps I Avg—max— bps

The "Header" part is the same as the above-mentioned statistical message, and will not be described here; "I/O channel Usage Reply": "Message Type: I/O Channel Usage Reply Information" is used to further indicate that the information is statistical. Reply message; "Channel Name" indicates the SLA name corresponding to the selected I/O channel, which can be the same as in the "Header" section, corresponding to the statistics message; "B ody" indicates the parameter data included, including: I/ The SLA demand level SLA_level, IOPS information SLA_iops, and rate information SLA_bps corresponding to the O channel.

S2023: The file system obtains a situation message corresponding to each I/O channel.

Specifically, after receiving the statistical reply message corresponding to each I/O channel fed back by the underlying hardware, the file system can construct and obtain corresponding situational messages.

The S203 and Qo S dynamic equalization devices query the Qo S knowledge base.

Specifically, after receiving the status message corresponding to each I/O channel sent by the file system feedback, the Qo S dynamic equalization device queries the Qo S knowledge base to determine the corresponding I/O channel in the Qo S knowledge base. Standard resource usage parameters.

The Qo S knowledge base is a database for recording the standard resource usage parameters corresponding to each SLA, and may be a part of the corresponding function in the Qo S equalization device, or may be an independent device, which is not limited herein. The standard resource usage parameters may be related parameters selected by the user for different SLAs in advance, and may specifically include: IOPS information, Bps information, priority information, etc., and some of the parameters listed above are only exemplary. In actual applications, there may be differences depending on the application scenario or requirements, and other tunable parameters related to channel performance may be included. Indicators, not limited here.

It is worth mentioning that the establishment of the QoS knowledge base is implemented by the QoS dynamic equalization device receiving the knowledge base update message, and the knowledge base update message can be obtained from the user service process, or can be directly obtained from the outside, which is not limited herein. The knowledge base update message contains an SLA identifier (such as the SLA name) and its associated parameters (such as standard resource usage parameters) corresponding to the user's SLA requirements. After obtaining the knowledge base update message, the QoS dynamic equalization device retrieves and determines whether the knowledge base update corresponding to the SLA identifier exists in the QoS knowledge base. If not, the new entry is recorded, if yes, Then, it is further determined whether the parameter recorded therein needs to be updated, and whether the update is completed or not, the establishment of the QoS knowledge base is completed.

Exemplarily, the record format of each knowledge base entry in the QoS knowledge base can be as shown in Table 1:

Table 1

Optionally, the foregoing QoS balancing device queries the QoS knowledge base according to the situation information corresponding to each I/O channel, as shown in FIG. 5, which may specifically include:

S203 1. The QoS dynamic equalization device sends a query request message corresponding to each I/O channel to the QoS knowledge base.

Specifically, after receiving the situation information sent by the file system, the QoS dynamic equalization device sends a query request message corresponding to each I/O channel to the QoS knowledge base.

The query request message may include SLA information corresponding to the queried I/O channel. The SLA information may be an SLA name, and is used to indicate that the Qo S knowledge base feeds back the standard resource usage parameter corresponding to the SLA specified by the SLA name.

Optionally, the query request message may further include: a message type, a memory address bit number, a message identifier, a data storage address, and the like, and the format of the message may be as follows:

I/O QOS lookup Information Message

Header

Message Ty e: I/O QOS lookup Information

Length: 32

Transaction ID: 2

Channel Name: SLA Name

I/O channel Usage Statistics Request

Message Type: I/O QOS lookup Request Information

Channel Name: SLA Name

Body: *usage [4]

The "Header" part (ie, the information header): "Message Type: I/O QOS lookup Information" indicates that the information is used to interact with the parameter information corresponding to the specified SLA name in the QoS knowledge base; "Length" indicates the memory address bit. The number is "32";

The "Transaction ID" indicates that the message identifier is "2"; "Channel Name" indicates the SLA name corresponding to the selected I/O channel.

"I/O channel Usage Statistics Request": "Message Type: I/O QOS lookup Request Information" is used to further indicate that the information is a query request message; "Channel Name" indicates the corresponding I/O channel corresponding to The SLA name, which can be the same as in the "Header" section; "Body" indicates the data storage address.

The S2032, Qo S dynamic equalization device receives the QoS knowledge base feedback and sends the query reply information corresponding to each I/O channel.

Specifically, after receiving the query request messages sent by the QoS dynamic equalization device, the QoS knowledge base retrieves and acquires each I/O channel according to the indication in each query request message. The set SLA constructs a query reply message corresponding to each query request message in the standard resource usage parameter corresponding to the Qo S knowledge base, and sends each query reply message to the Qo S dynamic equalization device.

The query response message corresponding to each I/O channel may include a standard resource usage parameter corresponding to the SLA set in the I/O channel in the Qo S knowledge base.

Optionally, the foregoing query reply message may further include: a message type, a memory address digit, a message identifier, parameter data, and the like, and the format of the message may be as follows:

I/O QO S lookup Information Message

Header

Message Ty e: I/O QO S lookup Information

Length: 32

Transaction ID: 2

Channel Name: SLA Name

I/O channel

Message Type: I/O QO S lookup Reply Information

Channel Name: SLA Name

B ody:

SLA_ level: priority

SLA_iops: min_iop s I max—iops

SLA — bps: min — bps I max — bps

SLA—service: iops— usage I bps— usage I time— period where the “Header” part is the same as the above query request message, and will not be described here; “I/O channel Usage Statistics Reply” in Shaoyuan: “Message Type : I/O QO S lookup Reply Information" is used to further indicate that the message is a query reply message; "Channel Name" indicates the SLA name corresponding to the selected I/O channel, which can be the same as in the "Header" section, with the query request The message corresponds to; the "B ody" indicates the parameter data included, including: SLA demand level corresponding to the I/O channel SLA_level, IOPS information SLA_iops, rate information SLA-bps, utilization information SLA-service.

The S204 and Qo S dynamic equalization devices change the resource usage of the I/O channel. Specifically, the Qo S dynamic equalization device determines the I/O channel that is not matched, and constructs a change message, and changes the resource usage of each mismatched I/O channel through the user SLA.

The user SLA is used to manage the SLA requirements of each user service, and can interact with the file system to allocate corresponding resources for different user SLA requirements, which can be part of the corresponding function in the Qo S dynamic equalization device, or A separate functional module in a computer system is not limited here.

Exemplarily, after receiving the query reply message corresponding to each I/O channel fed back by the Qo S knowledge base, the Qo S dynamic equalization device according to the corresponding relationship between the I/O channel indicated by each query reply message and the standard resource use parameter, The correspondence between the I/O channel indicated by the situation message and the resource information indicating the current resource usage is compared, and the value of the parameter item included in the channel corresponding resource information in all the I/O channels is greater than the The I/O channel corresponding to the value provided by the channel for the parameter item in the standard resource usage parameter is determined as an unmatched I/O channel.

Taking the format provided by the statistical reply message and the query reply message in the above embodiment as an example, when the statistical response message corresponding to any I/O channel is SLA_iops larger than the SLA_iops in the query reply message (ie, Avg_min_iops I Avg_max_iops > Min_iops I max — iops ) , or, when the SLA_bps in the statistical reply message is greater than the SLA_bp s in the query reply message (ie, Avg_min_bp s I Avg—max— bp s > min—bp s I max—bps), determine the I/ The O channel is an unmatched I/O channel. That is to say, the current resource usage of the service on the I/O channel exceeds the resource usage requirement specified by the SLA, and the resource usage is changed to achieve the balance of resources in each channel. Wherein, the determined unmatched I/O channels may be one or more.

Further, the Qo S dynamic equalization device sends a change message to the user SLA, and the user SLA determines the mismatched I/O channel according to the change message, and instructs the file system to perform resource change on the designated I/O channel.

Before performing the resource change operation, it also includes determining whether the hardware and each I/O channel can provide the corresponding resources required for the change. Parameters to reflect device read and write throughput For example, the IOP S is determined according to the situation message corresponding to each I/O channel. If the current IOP S value in the channel resource information is smaller than the maximum IOP S value that the channel can reach, it indicates that the I/O channel can provide additional IOP S capabilities to determine that resource change operations are executable. The foregoing process of determining the IOP S capability is only exemplary. For other tunable parameters, such as the bps parameter that reflects the read/write rate, the corresponding operation may be used for the determination, which is not limited herein.

Further, after determining that the hardware and the channel can provide additional required resources, the resources of the unmatched I/O channel are changed to the parameter values that should be provided by the standard resource usage parameter corresponding to the I/O channel ( That is, min_iops I max—iops or min—bps I max—bps, etc., to complete the change of resource usage.

It is worth mentioning that if the hardware and channel cannot provide additional resources, it indicates that the above resource change operation cannot be performed and the resource change fails.

Optionally, the file system can be developed based on the Linux operating system kernel, and the resource change operation for the specified mismatched I/O channel can be implemented by the Linux Cgroup s (Control groups) mechanism.

The Linux Cgroups mechanism provides a mechanism for the Linux kernel to limit, record, and isolate the physical resources (such as cpu, memory, I/O resources, etc.) used by the rocess group s. It can be applied to a variety of applications. Scenes. Functions include: Limiting the number of resources that a process group can use (Resource limiting), Prioritization of a process group, Recording the number of resources used by a process group (Accounting), Process group isolation (process), Process group control (control), etc. .

The user SLA instructs the file system to perform the change operation. The file system uses the Linux Cgroups mechanism according to the standard resource usage parameters corresponding to the above-mentioned mismatched I/O channels in the Qo S knowledge base, such as the number of resources that can be used by the process group, and the process group. Priority control, etc.) Change the resource usage of each I/O channel. After the change operation is completed, the user SLA sends a change reply message to the Qo S dynamic equalization device to indicate the result of the change operation.

The change reply message may include: a message type, a number of memory address bits, a message identifier, and an SLA information corresponding to an I/O channel whose change operation does not match (such as an SLA name) The parameter data of the changed state and the change status bit of the reaction change operation state. The format of the message can be as follows:

I/O QOS modify Information Message

Header

Message Type: I/O QOS modify Information

Length: 32

Transaction ID: 3

Channel Name: SLA Name

I/O QOS modify Information Message Reply

Message Type: I/O QOS modify Reply Information

Channel Name: SLA Name

Body:

SLA_ level: priority

SLA— iops: min_iops I max—iops

SLA — bps: min — bps I max — bps

SLA— status: 0/1/2

Where the "Header" part (ie, the information header): "Message Type: I/O QOS modify Information" indicates that the information is used to interactively specify the change of the above-mentioned mismatched I/O channel; "Length" indicates the memory address The number of digits is "32"; "Transaction ID" indicates that the message identifier is "3"; "Channel Name" indicates the SLA name corresponding to the selected unmatched I/O channel.

In the "I/O QOS modify Information Message Reply" section: "Message Type: I/O QOS modify Reply Information" is used to further indicate that the message is a change reply message; "Channel Name" indicates the selected mismatched I/O The SLA name corresponding to the channel can be the same as in the "Header" section; "Body" indicates the included post-change parameter data, including: Change the SLA requirement level of the operation object I/O channel SLA_level, IOPS information SLA_iops Rate information SLA-bps, change ^1 status SLA_ status.

It is worth mentioning that in the above change reply message, when the initial state of the SLA_statal is 0, it indicates that the resource change is not performed; when it is 1, it can indicate that the resource change is successful; when it is 2, it can indicate that the resource change fails, and the specific The corresponding method is not limited here.

It should be noted that the implementation of the Linux Cgroups mechanism based on the Linux operating system kernel is only exemplary. It is conceivable that when using other types of operating platforms, such as XEN virtual machine architecture, KVM (Kernel-based Virtual Machine) , a kernel-based virtual machine, etc., can be easily conceived by those skilled in the art without creative efforts, and thus is also within the scope of the embodiments of the present invention.

An embodiment of the present invention provides an I/O channel QoS dynamic equalization method. By obtaining resource information and SLA information of each I/O channel, the QoS knowledge base is queried to obtain an SLA corresponding to each I/O channel. After the standard resource uses the parameter, the comparison determines the I/O channel that the current resource usage does not match the standard resource usage parameter, and further instructs the file system to perform resource adjustment on the above-mentioned mismatched I/O channel. In this way, in the prior art, during the data transmission process, the service state changes, the channel resource usage changes, the channel resource utilization decreases, and the QoS requirement of the service cannot be guaranteed. Therefore, Compared with the prior art, the embodiment of the present invention can change and adjust the resource usage of the I/O channel, ensuring the configuration requirements of various aspects of the user service and the QoS balance between the I/O channels, and improving the I/O channel. performance.

An embodiment of the present invention provides an I/O channel Qo S dynamic equalization apparatus 00, which corresponds to an I/O channel QoS dynamic equalization method provided by the foregoing embodiment. As shown in FIG. 6, the QoS dynamic equalization apparatus is shown in FIG. 00 includes:

The receiving unit 001 is configured to receive resource information sent by the file system indicating current resource usage of each I/O channel, and SLA information indicating a service level agreement SLA set by each I/O channel.

The query unit 002 is configured to query the QoS knowledge base, and according to the SLA information of each I/O channel, the standard resource usage parameter corresponding to the SLA set by each I/O channel is matched. Number.

The standard resource usage parameters corresponding to each SLA are pre-stored in the QoS knowledge base.

The obtaining unit 003 is configured to compare the SLA information and the resource information of each I/O channel according to the standard resource usage parameter corresponding to each SLA, and determine an I/O channel that does not match the current resource usage parameter and the standard resource usage parameter.

The indicating unit 004 is configured to send an instruction to the file system, so that the file system adjusts resource usage of the unmatched I/O channel according to the standard resource usage parameter corresponding to the SLA.

It should be noted that the dotted line indicates that the units may have a connection relationship, or may not have a direct connection relationship. For example, the receiving unit 001 and the query unit 002 are both used to interact with devices outside the device, and the receiving unit 001 may The inquiry unit 002 is notified after receiving the required information, and there may be no notification.

Optionally, as shown in FIG. 7, the QoS dynamic balancing apparatus 00 may further include: a requesting unit 005, configured to receive, by the receiving unit 001, resource information that is sent by the file system and indicates current resource usage of each I/O channel, where And before the SLA information indicating the service level agreement SLA set by each I/O channel, the situation request message is sent to the file system, and the situation request message is used to instruct the file system to feed back the resource information and the SLA information of each I/O channel.

Optionally, the receiving unit 001 can be specifically configured to:

Receiving a situation request message in the file system, according to the indication of the situation request message, the current resource usage on each I/O channel is collected by the underlying hardware, and the resource information and SLA information of each I/O channel are obtained and fed back, and then received. Resource information and SLA information.

Optionally, the query unit 002 can be specifically configured to:

Constructing, according to the SLA information of each I/O channel, a query request message corresponding to each I/O channel, and the query request message includes SLA information corresponding to the I/O channel;

According to each query request message, the QoS knowledge base is traversed to obtain a query reply message corresponding to each query request message, and the query reply message includes the standard resource use parameter corresponding to the SLA information of the corresponding I/O channel in the QoS knowledge base. Optionally, the obtaining unit 003 may be specifically configured to:

An embodiment of the present invention provides an I/O channel QoS dynamic equalization apparatus. By acquiring resource information and SLA information of each I/O channel, the QoS knowledge base is queried to obtain an SLA corresponding to each I/O channel. After the standard resource uses the parameter, the comparison determines the I/O channel that the current resource usage does not match the standard resource usage parameter, and further instructs the file system to perform resource adjustment on the above-mentioned mismatched I/O channel. In this way, the problem that the channel resource utilization is reduced and the QoS requirements of the service cannot be guaranteed due to the change of the service state during the data transmission process of the I/O is solved, and the configuration requirements and the I/O channel of the user service are ensured. QoS balancing improves I/O channel performance.

An embodiment of the present invention further provides an I/O channel QoS dynamic equalization apparatus 01. As shown in FIG. 8, the QoS dynamic equalization apparatus 01 includes:

Bus 01 1 , and a processor 012, a memory 013 and an interface 014 connected to the bus 01 1 , wherein the interface 014 is used to implement connection communication between the nodes;

The memory 013 is configured to store an instruction, and the processor 012 executes the instruction, specifically for receiving resource information sent by the file system and indicating current resource usage of each I/O channel, and a service that is set for each I/O channel. SLA information for the Level Agreement SLA.

The processor 012 executes the instruction and is further configured to: query the QoS knowledge base, and match the standard resource usage parameters corresponding to the SLA set by each I/O channel according to the SLA information of each I/O channel.

The processor 012 executes the instruction, and is further configured to: determine, according to the standard resource usage parameter corresponding to each SLA, the SLA information and the resource information of each I/O channel. I/O channels whose pre-resource usage does not match the standard resource usage parameters.

The processor 012 executes the instruction and is further configured to: send an instruction to the file system, so that the file system adjusts resource usage of the unmatched I/O channel according to the standard resource usage parameter corresponding to the SLA.

In the embodiment of the present invention, optionally, the resource information sent by the receiving file system indicating the current resource usage of each I/O channel, and the SLA information indicating the service level agreement SLA set by each I/O channel are selected. Previously, the processor 012 executing the instruction may be specifically used to:

A situation request message is sent to the file system, and the situation request message is used to instruct the file system to feed back resource information and SLA information of each I/O channel.

Further, in the embodiment of the present invention, optionally, the processor 012 executes the instruction, which may be specifically used to:

In the embodiment of the present invention, optionally, the processor 012 executes the instruction, which may be specifically used to:

According to each query request message, the QoS knowledge base is traversed to obtain a query reply message corresponding to each query request message, and the query reply message includes the standard resource usage parameter corresponding to the SLA information of the corresponding I/O channel in the QoS knowledge base.

I/O channel with the value of the parameter item greater than the value provided by the standard resource usage parameter Determined as a mismatched I/O channel.

An embodiment of the present invention provides an I/O channel QoS dynamic equalization apparatus. By acquiring resource information and SLA information of each I/O channel, the QoS knowledge base is queried to obtain an SLA corresponding to each I/O channel. After the standard resource uses the parameter, the comparison determines the I/O channel that the current resource usage does not match the standard resource usage parameter, and further instructs the file system to perform resource adjustment on the above-mentioned mismatched I/O channel. As a result, the problem of the Qo S demand of the service cannot be guaranteed due to the change of the service status of the I/O during the data transmission process, and the configuration requirements and I/O of the user service are guaranteed. QoS balancing between channels improves I/O channel performance.

In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the device embodiments described above are only schematic. The division of the units is only a logical function division. In actual implementation, there may be another division manner. For example, multiple units or components may be combined or integrated. Go to another system, or some features can be ignored, or not executed.

Further, in the devices and systems in the various embodiments of the present invention, each functional unit may be integrated in one processing unit, or each unit may be physically included separately, or two or more units may be integrated in one unit. The above units may be implemented in the form of hardware or in the form of hardware plus software functional units.

All or part of the steps of implementing the above method embodiments may be performed by hardware related to the program instructions. The foregoing program may be stored in a computer readable storage medium, and when executed, the program includes the steps of the foregoing method embodiments; The foregoing storage medium includes: a U disk, a removable hard disk, a ROM (Read Only Memory), a RAM (Random Access Memory), a disk or an optical disk, and the like, which can store program codes.

The above is only the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention. It should be covered by the scope of the present invention. Therefore, the scope of the invention should be determined by the scope of the claims.

Claims

Claim

An I/O channel QoS dynamic equalization method, comprising: receiving resource information sent by a file system indicating current resource usage of each I/O channel, and indicating each I/O channel setting SLA information of the service level agreement SLA; querying the QoS knowledge base, and matching the standard resource usage parameters corresponding to the SLAs set by the respective I/O channels according to the SLA information of each I/O channel; The standard resource usage parameters corresponding to the respective SLAs are pre-stored in the QoS knowledge base;

And determining, according to the standard resource usage parameter corresponding to each SLA, the I/O channel that does not match the current resource usage parameter and the standard resource usage parameter by comparing the SLA information and the resource information of each I/O channel;

2. The method according to claim 1, wherein the resource information indicating the current resource usage of each I/O channel sent by the receiving file system, and the service indicated by each I/O channel are set. Before the SLA information of the level agreement SLA, the method further includes: sending a situation request message to the file system, where the situation request message is used to instruct the file system to feed back the resource information and the SLA information of each I/O channel.

The method according to claim 2, wherein the receiving file system sends resource information indicating current resource usage of each I/O channel, and indicating a service level set by each I/O channel. The SLA information of the protocol SLA includes:

Receiving, by the file system, the situation request message, and obtaining the resource information of each I/O channel and the After the SL A information is sent and fed back, the resource information and the SLA information are received.

The method according to claim 1, wherein the querying the QoS knowledge base, according to the SLA information of each I/O channel, matching and obtaining the SLA corresponding to each I/O channel Standard resource usage parameters include:

Constructing, according to the SLA information of each I/O channel, a query request message corresponding to each I/O channel, where the query request message includes the SLA information corresponding to the I/O channel; And sequentially querying, according to each of the query request messages, the QoS knowledge base, a query reply message corresponding to each of the query request messages, where the query reply message includes the SLA information of the corresponding I/O channel. The corresponding standard resource usage parameter in the QoS knowledge base.

The method according to claim 1, wherein the determining the current resource by comparing the SLA information and the resource information of each I/O channel according to a standard resource usage parameter corresponding to each SLA I/O channels whose usage does not match the standard resource usage parameters include:

And the value of the parameter item is greater than a value corresponding to the standard resource usage parameter.

The I/O channel is determined to be an unmatched I/O channel.

An I/O channel QoS dynamic equalization apparatus, comprising: a receiving unit, configured to receive resource information sent by a file system and indicating current resource usage of each I/O channel, and represent each I/ SLA information of the service level agreement SLA set by the O channel;

7. The device according to claim 6, further comprising:

a requesting unit, configured to receive, by the receiving unit, a representation sent by the file system a resource request information of the current resource usage of the I/O channel, and a SLA information indicating a service level agreement SLA set by each I/O channel, and sending a situation request message to the file system, where the situation request message is used to indicate the The file system feeds back the resource information and the SLA information of each I/O channel.

8. The device according to claim 7, wherein the receiving unit is configured to:

9. The apparatus according to claim 6, wherein the query unit is specifically configured to:

Configuring, according to the SLA information of each I/O channel, a query request message corresponding to each I/O channel, where the query request message includes the SLA information corresponding to the I/O channel; And the request message, traversing the QoS knowledge base, and obtaining a query reply message corresponding to each of the query request messages, where the query reply message includes the corresponding information of the SLA information of the corresponding I/O channel in the QoS knowledge base. Standard resource usage parameters.

10. The device according to claim 6, wherein the obtaining unit is specifically configured to:

The I/O channel is determined to be an unmatched I/O channel.

1 1. An I/O channel QoS dynamic equalization apparatus, comprising: a bus, and a processor, a memory, and an interface connected to the bus; the memory is configured to store an instruction; The instructions are used to:

Receives the data sent by the file system indicating the current resource usage of each I/O channel. Source information, and SLA information indicating a service level agreement SLA set for each I/O channel; querying the QoS knowledge base, matching each of the I/O channels according to the SLA information of each I/O channel a standard resource usage parameter corresponding to the determined SLA;

The standard resource usage parameters corresponding to each SLA are pre-stored in the QoS knowledge base;

12. The apparatus according to claim 11, wherein the resource information indicating the current resource usage of each I/O channel sent by the receiving file system, and the service indicated by each I/O channel are set. Before the SLA information of the level agreement SLA, the processor executes the instruction specifically for:

The device according to claim 12, wherein the processor executes the instruction specifically for:

The device according to claim 11, wherein the processor executes the instruction specifically for:

The device according to claim 1, wherein the processor executes the instruction specifically for: