CN106686082B - Storage resource adjusting method and management node - Google Patents
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Abstract
The invention provides a storage resource adjusting method and a management node. The management node is connected between the service node and the storage device. The management node executes the method to receive a load index sent by a service node, wherein the load index is a performance parameter of the service node acquired by the service node when the service node runs an application, an acquisition value of at least one storage index of a storage area corresponding to the application run by the service node is searched in an original acquisition database, the original acquisition database is a value of the storage index of each storage area in storage equipment periodically acquired by the storage equipment, the storage index is the performance parameter of each storage area, then the acquisition value of each storage index is analyzed to determine the storage index required to be adjusted, and then the determined storage index required to be adjusted is adjusted. The invention can adjust the storage resource of the storage device according to the application requirement of the service node.
Description
Technical Field
The present invention relates to the field of storage, and in particular, to a method for adjusting storage resources and a management node.
Background
With the development of cloud computing, mobile internet and big data, the sudden business demand causes that storage resources configured for applications may be difficult to meet the application demand. For example, a preconfigured Quality of Service (QoS) for an application, may be due to a promotion activity of the e-commerce failing to meet the requirements of the application, and therefore requires dynamic adjustment of the configuration of the storage resources of the application,
in the prior art, when the storage resources are adjusted, the adjustment is performed on the storage side, that is, the operation and maintenance software is used for monitoring the performance or capacity index of the storage, analyzing and predicting the performance or capacity index, and then an administrator judges the performance or capacity index according to experience and manually adjusts the configuration of the storage. Thus, it is impossible to adjust for the application requirements, which may cause a waste of storage resource configuration, for example, if the administrator finds that the IO delay is increased, the administrator may adjust the threshold of the number of times of performing read/write operations per Second (IOPS) of storage, but the load of the application may still be within the normal state range, and no adjustment is needed.
Disclosure of Invention
The embodiment of the invention provides a storage resource adjusting method and a management node, which are used for adjusting storage performance indexes according to applied loads and avoiding invalid adjustment of storage resources.
A first aspect of the present invention provides a storage resource adjusting method, which is applied to a management node, where the management node is connected between a service node and a storage device. Firstly, the management node receives a load index sent by a service node, wherein the load index is a performance parameter of the service node collected by the service node when the service node runs. After receiving the load index, the management node searches an original acquisition database for an acquisition value of at least one storage index of a storage area corresponding to an application run by the service node, wherein the original acquisition database is a value of a storage index of each storage area in the storage equipment periodically acquired by the storage equipment, and the storage index is a performance parameter of each storage area. Then, the management node analyzes the acquired value of each storage index, determines the storage index needing to be adjusted, and can adjust the determined storage index needing to be adjusted after the index needing to be adjusted is determined.
Through the scheme, the storage device can trigger the adjustment of the storage indexes only when receiving the load indexes which are sent by the service host and exceed the threshold value, and when the storage indexes are adjusted, the storage indexes which need to be adjusted are determined according to the acquired acquisition values of the acquired storage indexes, so that the storage indexes of the storage device can be adjusted according to the applied load condition, and the invalid adjustment of the storage indexes by the storage side is avoided when the load of the service host side does not exceed the threshold value.
When analyzing the collection value of each storage index, the management node may determine, according to the collection value corresponding to each storage index, a storage index in which the fluctuation of the collection value exceeds a preset value within a preset time period, and then use the determined storage index as the storage index to be adjusted.
Therefore, the storage index needing to be adjusted can be determined according to the fluctuation value of the acquired value, and the adjustment of the storage index can be accurate.
When analyzing the collection value of each storage index, the management node may determine, according to the collection value corresponding to each storage index, a storage index of which the fluctuation of the collection value exceeds a preset value within a preset time period, use the determined storage index as a storage index set corresponding to the load index, search a history index set corresponding to the load index in an experience library, if the history index set is not found, use the storage index in the storage index set as a storage index to be adjusted, and store the storage index set in the experience library as the history index set of the load index.
By establishing the experience library, when the experience library does not have a history index set corresponding to the load, that is, when the storage index is not adjusted according to the load index, the load storage index determined this time can be stored in the experience library so as to be used as reference for determining the storage index needing to be adjusted later.
And when the experience library is established and the historical index set corresponding to the load index is searched in the experience library, determining whether the storage index set and the historical index set have the same storage index or not, if so, taking the same storage index as the storage index needing to be adjusted, and if not, not adjusting the storage index of the storage area.
The storage indexes with the fluctuation exceeding the threshold value corresponding to the determined load indexes are compared with the storage indexes in the existing historical index set in the experience base, and the storage indexes with less storage index ratio are selected as the adjustment indexes, so that the interference on the service indexes can be reduced.
When the storage index with the fluctuation of the acquisition value exceeding a preset value in a preset time period is determined according to the acquisition value corresponding to each storage index, whether the difference value between the acquisition values of two acquisition points closest to the current time exceeds a preset value or not can be determined according to the acquisition value corresponding to each storage index, and if the difference value exceeds the preset value, the storage index is determined to be the storage index with the fluctuation of the acquisition value exceeding the preset value.
The difference between the acquisition values of two acquisition points closest to the current time can reflect the fluctuation of the load index most, so that the storage index needing to be adjusted can be determined more accurately.
A second aspect of the embodiments of the present invention provides a management node, where the management node is connected between a service node and a storage device. The management node comprises a receiving module, a searching module and an adjusting module. The receiving module is used for receiving a load index sent by a service node, wherein the load index is a performance parameter of the service node collected by the service node when the service node runs. The searching module is used for searching a collection value of at least one storage index corresponding to a storage area corresponding to an application operated by the service node in an original collection database, the original collection database is a value of the storage index of each storage area in the storage equipment periodically collected by the storage equipment, and the storage index is a performance parameter of each storage area. The adjusting module is used for analyzing the acquisition value of each storage index, determining the storage index needing to be adjusted, and adjusting the determined storage index needing to be adjusted.
The adjusting module analyzes the acquisition value of each storage index, and determines the storage index to be adjusted, wherein the storage index is specifically used for determining the storage index of which the fluctuation of the acquisition value exceeds a preset value within a preset time period according to the acquisition value corresponding to each storage index; and taking the determined storage index as the storage index needing to be adjusted.
The adjusting module analyzes the acquisition value of each storage index, determines the storage index to be adjusted, and is specifically used for determining the storage index of which the fluctuation of the acquisition value exceeds a preset value within a preset time period according to the acquisition value corresponding to each storage index, and takes the determined storage index as a storage index set corresponding to the load index; and searching a historical index set corresponding to the load index in an experience base, if the historical index set is not found, taking the storage index in the storage index set as a storage index needing to be adjusted, and storing the storage index set in the experience base as the historical index set of the load index.
When the historical index set corresponding to the load index is found in the experience library, the adjusting module determines whether the storage index set and the historical index set have the same storage index, if so, the same storage index is used as the storage index needing to be adjusted, and if not, the storage index of the storage area is not adjusted.
The adjusting module is specifically configured to determine whether a difference between the acquired values of two acquisition points closest to the current time exceeds a preset value according to the acquired value corresponding to each storage index when determining the storage index, in which the fluctuation of the acquired value exceeds a preset value, in a preset time period according to the acquired value corresponding to each storage index, and if so, determine that the storage index is the storage index in which the fluctuation of the acquired value exceeds a preset value.
According to the technical scheme provided by the embodiment of the invention, the storage device can trigger the adjustment of the storage index only when receiving the load index exceeding the threshold value, which is sent by the service host, and the storage index needing to be adjusted can be determined according to the acquired acquisition value of each acquired storage index when the storage index is adjusted.
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 description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is an architecture diagram of a memory system according to an embodiment of the present invention.
Fig. 2 is a hardware structure diagram of a service node according to an embodiment of the present invention.
Fig. 3 is a flowchart of a method for monitoring a load by a service node according to an embodiment of the present invention.
Fig. 4 is a hardware structure diagram of a management node according to an embodiment of the present invention.
Fig. 5 is a flowchart of a method for adjusting storage indexes by a management node according to an embodiment of the present invention.
Fig. 6 is a block diagram of a service node in an embodiment of the present invention.
Fig. 7 is a block diagram of a management node in an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The storage resource adjusting method provided by the embodiment of the invention can adjust the storage resources according to the application load, can increase the storage resources for the application when the application load is larger, and can release the storage resources occupied by the application when the application load is smaller, so that the storage resources can be adjusted according to the application requirements, the storage resources can be automatically matched with the application requirements, and the storage resources can be fully utilized. The embodiments provided in the present invention will be described in detail below with reference to the accompanying drawings.
Fig. 1 is a diagram illustrating a system architecture according to an embodiment of the present invention. The system comprises a plurality of service nodes 10, a management node 11 and a storage device 12. The service node 10 is directly connected to the storage device 12 to access data in the storage device 12. The service node 10 is further connected to a management node 11, the management node 11 being connected to the storage device 12. The service node 10 may send the detected service index to the management node 11, and the management node 11 determines a storage index to be adjusted according to the received service index and the collected storage index of the storage device 12, so that the storage resource may be adjusted according to the application requirement.
As shown in fig. 2, the hardware structure of the service node 10 is shown. The service node 10 includes a Central Processing Unit (CPU) 101, a storage Unit 102, an interface 103, and a bus 104. The storage unit 102 and the interface 103 are connected to the CPU101 through a bus 104 to communicate with the CPU 101.
The storage unit 102 stores therein application software 106 and monitoring software 105. The CPU101 runs the application software 106 to make the service node 10 provide corresponding services to the outside, for example, the application software may be a database application mysql. In this embodiment, the CPU101 runs the monitoring software 105 to monitor the load when the CPU runs the application software 106, and when it is detected that the current load value of the service node 10 exceeds the preset threshold, the monitored load index is reported to the management node 11, and the management node 11 may adjust the storage resource required by the service node 10 according to the load index reported by the service node 10. In the embodiment of the invention, the load of the running application software can be embodied by the preset service index.
The method for the service node 10 to perform load monitoring may refer to the flowchart shown in fig. 3.
Step S301, the service node 10 periodically collects the load index when the application runs.
The load index is the value of various performance parameters of the service host when the application runs, and can reflect the load condition of the service host when the application runs. Before collection, various load indexes to be collected, a collection mode of each load index, a load threshold of each load index and a threshold strategy can be configured in a configuration file in advance. Different application software runs in the service node, and different collected load indexes are obtained. For example, the load index of the application software mysql can be set as SQL query delay, SQL update delay, query throughput, SQL query average run time, and the like. Each load index is configured with different acquisition modes, such as CLI, WMI, REST and the like. When various load indexes are collected, the collection can be carried out according to the set collection mode.
Step S302, comparing the collected load index value with the load threshold value set for each load index, executing step S303 when the load index value exceeds the set load threshold value, if the load index value does not exceed the set load threshold value, returning to step S301, waiting for the next collection period, and continuing to collect the load index.
In this embodiment, each load index may be provided with two index thresholds, one being a maximum index threshold and one being a minimum index threshold, where the exceeding of the set load threshold may be that the acquired load value is greater than or equal to the maximum index threshold, or that the acquired load value is less than or equal to the minimum index threshold. That is, when the collected load index value is greater than the maximum index threshold and less than the minimum index threshold, the adjustment of the storage resource may be triggered, when the collected load index value is greater than the maximum threshold, it indicates that the current application load is too large, and a larger storage resource needs to be configured for the application to meet the application requirement, and when the collected load index value is less than the minimum threshold, it indicates that the current application load is smaller, and some storage resources may be released.
Step S303, determining whether the collected load index value meets a set threshold policy, if yes, executing step S304, that is, reporting the load index to the management node 11, and if not, returning to step S301, waiting for the next collection cycle, and continuing to collect the load index.
And when the service node reports the load index, the load index also carries an application identifier of the application operated by the service node. Because the storage device can provide storage service for a plurality of service nodes, the storage device will also define a storage area for each service node, and the storage area defined for each service node only provides service for the corresponding service node. For example, a storage device may divide a plurality of logical units (logicunits, LUs), mount an LU to a service node, and then the LU may provide a data storage service for the service node, and store, on the storage device, a correspondence between the service node and an LUN (logical Unit Number, LUN) mounted to the service node. .
Since the system may have transient performance degradation or fluctuation due to network or system operation and maintenance, and the triggering of individual threshold value may not represent the real state of the system, in order to prevent misjudgment caused by abnormal fluctuation of the collected index, a threshold value policy may be set, where the threshold value policy may be set to the number of times that the collected load index value exceeds the set threshold value in a unit time, for example, if the set threshold value policy is that the collected load index value exceeds the load threshold value three times in one minute, the load index may be reported to the management node 11 only if the collected load index value exceeds the load threshold value for the third time in one minute.
When receiving the load index sent by the service node 10, the management node 11 may adjust the storage resource corresponding to the application according to the load index, so that the storage resource meets the application requirement.
As shown in fig. 4, a hardware structure diagram of the management node is shown. The management node includes a CPU401, a storage unit 402, an interface 403, and a bus 404. The storage unit 402 and the interface 403 are connected to the CPU401 through a bus 404 to communicate with the CPU 401.
The storage unit 402 stores therein adjustment software 405. The CPU101 runs the adjustment software 405 so that the management node can adjust the storage index of the storage device according to the received load index sent by the service node. In addition, the management node 11 may also periodically collect storage indexes of each storage area in the storage device 12, where the storage indexes are performance parameters of each storage area. When the storage device 12 provides services for a plurality of service nodes, the corresponding storage device is also divided into a plurality of storage areas, and each area provides data storage services for different service nodes, so when the management node 11 collects storage indexes of the storage device 12, it collects the storage indexes for each storage area, taking LUNs as an example, when the storage device 12 collects storage indexes, it collects storage indexes for each LUN, and stores the collected storage indexes of each LUN in an original collection database. The storage index may be IOPS, the number of read IO executed per second, the number of write IO executed per second, the delay of read/write IO, and the like.
FIG. 5 is a flow chart illustrating storage resource adjustment for a management node.
Step S501, the management node receives a load index and a storage identifier sent by a service node 10, where the storage identifier is an identifier of a storage area provided for the service node in the storage device.
Step S502, searching the acquisition value of at least one storage index corresponding to the storage identifier in the original acquisition database according to the storage identifier.
Step S503, determining a storage index of which the fluctuation of the acquisition value exceeds a preset value in a preset time period according to the acquisition value corresponding to each storage index.
In this embodiment, it may be determined whether a difference between the acquired values of the two acquisition points closest to the current time exceeds a preset value, and if so, it is determined that the fluctuation of the storage index exceeds the preset value. And recording the storage index of which the determined fluctuation exceeds a preset value as the storage index corresponding to the load index. One or more storage indexes corresponding to each load index may be provided, and the storage index corresponding to each load index may be used as the storage index set corresponding to the load index.
Step S504, searching a historical index set corresponding to the load index in an experience base, if not found, executing step S507, taking a storage index in the storage index set as an adjustment index, where the adjustment index is a storage index that needs to be adjusted, and storing the storage index set in the experience base as the historical index set of the load index. If found, step S505 is performed.
Step S505, determining whether there is the same storage index in the storage index set and the history index set, if yes, executing step S506, taking the same storage index as the storage index to be adjusted, and if not, executing step S507, that is, not adjusting the storage index of the storage area, and merging the storage index set corresponding to the load index into the history index set.
Step S508, adjusting the adjustment index.
When the adjustment index is adjusted, a preset step length can be adjusted first. Thus, after adjustment, if the management node also receives the load index sent by the service node, the adjustment is continued until the load index sent by the service node is no longer received.
In another implementation manner of the embodiment of the present invention, a storage index in which the fluctuation of the acquired value determined in step S503 exceeds a preset value may be directly used as the adjustment index.
Fig. 6 is a block diagram of a service node according to an embodiment of the present invention. The service node includes an acquisition module 601, a comparison module 602, and a determination module 603. The acquisition module 601 is configured to periodically acquire the load index when the application runs, and the acquisition mode is the same as the acquisition mode in step 301, which is not described herein again.
The comparison module 602 compares the collected load index value with the load threshold set for each load index, and waits for the next collection period to continue collecting the load index when the collected load index value does not exceed the set load threshold. The specific comparison method can refer to the description of step S302.
The determining module 603 is configured to determine whether the collected load index value meets a set threshold policy, if yes, report the load index and the collection value of the load index to the management node 11, and if not, wait for the next collection period, and continue to collect the load index by the collecting module 601. Please refer to the description of step S303 for a specific reporting manner.
Fig. 7 is a block diagram of a management node according to an embodiment of the present invention. The management node includes a receiving module 701, a searching module 702, and an adjusting module 703. The receiving module 701 is configured to receive a load index and a storage identifier sent by a service node 10, where the storage identifier is an identifier of a storage area provided for the service node in the storage device, and refer to the description in step S501 specifically.
The searching module 702 is configured to search, according to the storage identifier, the original acquisition database for an acquisition value of at least one storage indicator corresponding to the storage identifier, specifically refer to the description in step S502.
The adjusting module 703 is configured to determine a storage index in which the fluctuation of the acquisition value exceeds a preset value within a preset time period according to the acquisition value corresponding to each storage index, searching a historical index set corresponding to the load index in an experience library, if the historical index set is not found, taking a storage index in the storage index set as an adjustment index, wherein the adjustment index is the storage index needing to be adjusted, and storing the set of stored metrics in the experience repository as a set of historical metrics for the load metrics, determining whether there is a same stored metric in the set of stored metrics and the set of historical metrics, if so, the same storage index is taken as the storage index needing to be adjusted, and if not, and merging the storage index set corresponding to the load index into the historical index set without adjusting the storage index of the storage area. Please refer to the description of steps S501 to S506.
The data backup device and method provided by the embodiment of the present invention are described in detail above, and a specific example is applied in the description to explain the principle and the embodiment of the present invention, and the description of the above embodiment is only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (2)
1. A storage resource adjustment method is applied to a management node, wherein the management node is connected between a service node and a storage device, and the method comprises the following steps:
receiving a load index sent by a service node, wherein the load index is a performance parameter of the service node collected by the service node when the service node runs, and the load index exceeds a threshold value;
searching for an acquisition value of at least one storage index of a storage area corresponding to an application run by the service node in an original acquisition database, wherein the original acquisition database is a value of a storage index of each storage area in the storage equipment periodically acquired by the storage equipment, and the storage index is a performance parameter of each storage area;
analyzing the acquired value of each storage index to determine the storage index required to be adjusted;
adjusting the determined storage index needing to be adjusted;
wherein, the analyzing the collection value of each storage index and determining the storage index needing to be adjusted comprises: determining a storage index of which the fluctuation of the acquisition value exceeds a preset value in a preset time period according to the acquisition value corresponding to each storage index, and taking the determined storage index as a storage index set corresponding to the load index;
searching a historical index set corresponding to the load index in an experience base, if the historical index set is not found, not adjusting the storage index of the storage area, and storing the storage index set serving as the historical index set of the load index in the experience base;
when the historical index set corresponding to the load index is found in the experience library, whether the storage indexes in the storage index set and the historical index set have the same storage indexes is determined, if yes, the same storage indexes are used as the storage indexes needing to be adjusted, if not, the storage indexes in the storage area are not adjusted, and the load index set corresponding to the load index is combined to the historical index set.
2. A management node connected between a service node and a storage device, comprising:
the system comprises a receiving module, a sending module and a processing module, wherein the receiving module is used for receiving a load index sent by a service node, the load index is a performance parameter of the service node collected by the service node when the service node runs, and the load index exceeds a threshold value;
the searching module is used for searching for an acquisition value of at least one storage index corresponding to a storage area corresponding to an application operated by the service node in an original acquisition database, wherein the original acquisition database is a value of the storage index of each storage area in the storage equipment periodically acquired by the storage equipment, and the storage index is a performance parameter of each storage area;
the adjusting module is used for analyzing the acquisition value of each storage index, determining the storage index needing to be adjusted, and adjusting the determined storage index needing to be adjusted;
the adjusting module analyzes the acquired value of each storage index, and determines that the storage index required to be adjusted is specifically used for: determining a storage index of which the fluctuation of the acquisition value exceeds a preset value in a preset time period according to the acquisition value corresponding to each storage index, and taking the determined storage index as a storage index set corresponding to the load index;
searching a historical index set corresponding to the load index in an experience base, if the historical index set is not found, not adjusting the storage index of the storage area, and storing the storage index set serving as the historical index set of the load index in the experience base;
when the historical index set corresponding to the load index is found in the experience library, the adjusting module determines whether the same storage index exists in the storage index set and the historical index set, if so, the same storage index is used as the storage index needing to be adjusted, if not, the storage index of the storage area is not adjusted, and the load index set corresponding to the load index is merged into the historical index set.
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