CN101167307B - Dynamically self-adaptive distributed resource management system and method - Google Patents

Abstract

A dynamically adaptive distributed resource management system and method, comprising multiple resource management boards with resource monitoring modules and management modules and multiple resource boards with one or more real resource instances. First configure and mark all the real resources and virtual resources required by each resource management board; after the resource management board is powered on, monitor the status of the real resources configured for it and mark the status, and obtain other resource management boards regularly Information about available real resources; the resource management board searches for virtual resources of the same kind that are available on the board and other resource management boards for virtual resources that have not been mapped to real resources on the board, and records the mapping relationship between the two after finding them. And set the state of the real resource as mapped, and the remaining available real resources are shared globally; when applying for resources, the resource management board allocates available virtual resources and returns the corresponding real resource identifiers. The process of resource application in the present invention is greatly simplified and the speed is greatly improved.

Description

A dynamically adaptive distributed resource management system and method

technical field

The invention relates to distributed resource management, in particular to a system and method for dynamically adaptive distributed resource management.

Background technique

In a modern distributed computer system, different CPU single boards implement different functions, and the purpose of the designer to design the functions of the entire system is realized through the division of labor of these single boards. For example, in a telecommunications system with many users, some boards provide resource processing capabilities. For the convenience of description, this kind of resource processing board with certain functions is referred to as resource board (RSB), and some boards are used for monitoring, distribution and management. The resource board is called a resource management board (RMB). The RMB includes a resource monitoring module and a resource management module, and may also include a resource usage module. Global sharing of RSB board resources is realized through RMB.

FIG. 1 is a schematic diagram of a network structure of distributed resources, including multiple RMB and RSB. Each RMB is equipped with a different number of RSB boards. The status of these RSB boards is monitored by the resource monitoring module in the RMB. In this paper, the RMB monitoring the RSB is also referred to as the RMB to which the RSB belongs. The corresponding relationship is described by solid lines in the figure. Specifically, for example, the status of resource boards RSB11-RSB1p is monitored by the resource monitoring module in RMB1; the status of RSB21-RSB1k is monitored by the resource monitoring module in RMB2. When the resource use module wants to use resources, it needs to apply to the resource management module. The resource management module can allocate other RMB monitoring RSBs for it. In Figure 1, the dotted line is used to describe the resource use relationship. It can be seen that the RMB that uses the RSB resource is not necessarily is the RMB that monitors the RSB.

How to realize the global sharing of these RSB single board resources has always been a problem considered by the industry. Previously, there were mainly the following management methods for resource management.

The first method: each RMB only manages its own resources, that is, monitoring and management are integrated. The problem with this method is that resources cannot be shared. When all the resources of a certain MB cannot work, even though other RMB has free resources, the RMB cannot meet the resource needs. In this management mode, in order to ensure reliability, more RSB boards need to be configured for backup, which increases the hardware cost of the initial deployment and is not conducive to future maintenance.

The second method: adopting a centralized resource management method. For example, the disclosed scheme of the patent application number 96117990.2 (publication number CN1156362A) is a representative of centralized resource management. This solution puts all resources on one RMB for unified management, and other RMB needs resources to apply for this RMB. The problem with this method is that once the RMB that centrally manages resources goes down, the entire system will be paralyzed, which is very dangerous. In addition, there are cross-board messages in the resource application between RMB, which will inevitably lead to a long time for resource application and the risk of message loss.

The third method: resources are not managed centrally on one RMB, but distributed management is also adopted. When resources in one RMB are insufficient or resources have problems, resources are applied to other RMB in turn. The problem of this method is that there is uncertainty, the software process is complicated, and it is difficult to realize. Moreover, the time for applying for resources is uncertain, some are long and some are short, which is not conducive to the software design of the part of applying for resources on the RMB.

The following takes DTMF (Dual Tone Multi-Frequency) resources as an example to describe the above third distributed resource management method in detail. The DTMF resource is a kind of resource needed in the telecommunication equipment in order to realize the conversation between a fixed-line user and other users.

The two virtual boxes in Fig. 2 represent two RMB respectively, and the call processing module (i.e. the resource usage module) of RMB1 on the left sends a request for applying for DTMF resources to the resource management module, and the resource management module first checks whether it is available on this RMB If the DTMF is found available, it will apply for occupation immediately, and return the number of the occupied DTMF to the call processing module; when the RMB has no available DTMF, the resource management module will send cross-board borrowing to other RMB Resource request, such as RMB2 on the right. After RMB2 receives the request, it will also search on this RMB first. If there is no available DTMF resource, it will send a resource borrowing request to the next RMB, and so on, until the available DTMF resource is applied for and returned or all the RMB is used. Ask for it all.

This processing flow is very cumbersome, and the call processing module (resource usage module) is difficult to determine the time of overtime protection because it is difficult to determine how many such cross-board calls are needed, and it is difficult to make a decision in processing. In addition, due to the existence of multiple cross-board calls, the call processing module does not know whether it is a message loss between boards or a delay in the normal processing flow of cross-board calls. Considering that each call processing has a time limit, it may occur Although there are available resources, the call fails due to not being able to make too many cross-board calls, resulting in call loss. In order to avoid this situation, it is generally used to configure more backup resource boards for each RMB, which leads to an increase in hardware costs.

Contents of the invention

The technical problem to be solved by the present invention is to provide a dynamically adaptive distributed resource management system and method, which greatly simplifies resource application processing and shortens resource application time while realizing global resource sharing.

Through the analysis of known technologies, it can be found that the existing RMB resource management methods are all passive, that is, searching is performed when resources are actually applied for. If a method is provided to actively monitor the status of resources, and to immediately find available resources once the resources are found to be unavailable, it will simplify the processing of resource applications and shorten the time for resource applications. Based on this idea, the present invention proposes an implementation method of configuring virtual resources first, utilizing the mapping between virtual resources and real resources, and achieving global shared resources through self-adaptation.

Some nouns used in the present invention are defined as follows:

Resources: including hardware resources (also called physical resources) and software resources. Hardware resources refer to physical entities that can be allocated and utilized in a distributed system, such as a specific single board, a serial port, etc.; The software code that has a certain function described and marked by the software. A hardware resource is described in a software program by a software resource.

Real resource: refers to the software resource directly used to describe a certain hardware resource, such as the software code to realize the DTMF function. An RSB board can provide one or more instances of real resources. The three existing management methods mentioned in the background art section can all be attributed to the management methods of real resources.

Virtual resource: refers to the logical resource defined in the program according to the needs, which can be obtained through configuration. There is no fixed corresponding relationship between virtual resources and real resources. It may be connected with a certain real resource at a certain moment, and establish a connection with another real resource at another moment, or establish a connection with different real resources.

Mapping: Refers to the one-to-one correspondence between virtual resources and real resources. Once the mapping relationship is established, a real resource can be uniquely determined according to the number of the virtual resource. The mapping relationship includes direct mapping relationship and indirect mapping relationship. Direct mapping means that a virtual resource directly corresponds to a real resource without an intermediary. Indirect mapping means that a virtual resource is first mapped with other virtual resources, and then other virtual resources are mapped to a real resource.

Based on the above ideas, the present invention provides a dynamically adaptive distributed resource management system, including multiple resource management boards and multiple resource boards, the resource management board includes a resource monitoring module and a resource management module, and the resource Boards have one or more instances of real resources, characterized by:

The resource monitoring module is used to monitor the status of real resources on several resource boards configured for the resource management board and notify the resource management module of the resource management board;

The resource management module is used to record the status and usage of real resources monitored by the resource management board, regularly acquire and record the information of available real resources on each resource management board, and find available virtual resources for the virtual resources configured by the resource management board. The same kind of real resources and the establishment of the mapping relationship between the two, when the resource application is received, the available virtual resource is allocated and the information of the real resource mapped to it is returned.

Further, the above-mentioned distributed resource management system may also have the following characteristics: the resource management module further includes the following units:

The resource information storage unit is used to record the status of each real resource monitored by the resource management board and the information of the resource management board using the real resource, and the information of each virtual resource configured by the resource management board and its mapped real resource , and available real resource information monitored by each resource management board in the system;

The shared resource information maintenance unit is used to regularly obtain the information of available real resources from other resource management boards, and realize the regular update of the global shared resources. Available real resources can be published or queried as global shared resources;

The resource allocation unit is configured to allocate an available virtual resource and return the real resource identifier corresponding to the virtual resource when receiving a resource application from the resource usage module, and return a failure message if there is no available virtual resource;

The mapping establishment processing unit is used to search for available real resources of the same type globally for the virtual resources configured by the resource management board and establish the mapping relationship between them;

The resource management control unit is used to coordinate and control each unit of the resource management module to complete various functions of the resource management module.

Further, the above-mentioned distributed resource management system may also have the following characteristics: the following list is stored in the resource information storage unit:

The real resource table records the identifier and status flag of each real resource monitored by the resource management board, as well as the identifiers of other resource management boards using the real resource;

The virtual resource table records the identification, mapping identification and mapped real resource identification of each virtual resource configured by the resource management board;

The global shared resource table records the identification of each resource management board in the system and the quantity and type of available real resources monitored.

Further, the above-mentioned distributed resource management system may also have the following characteristics: the mapping establishment processing unit further includes:

The on-board mapping establishment subunit is used to search for the available real resources of the same type in the real resource table of the resource management board for the virtual resources that have not been mapped, set the status of the found real resources as mapped and record the virtual resources. The mapping relationship between the resource and the real resource;

Inter-board mapping establishes a subunit, which is used to search for saved global shared resources, search for real resources available on other resource management boards, send a borrowing request to the resource management board after finding it, and record the virtual resource and the real resource after confirmation Mapping relationship, delete the record corresponding to the real resource or invalidate it when receiving a message of refusal to borrow;

The inter-board mapping confirmation subunit is used to judge the current status of these real resources when receiving requests for borrowing real resources from other resource management boards, return confirmation messages when they are indeed available, and set the status of these real resources to Mapped, otherwise a borrow rejection message is returned.

Further, the above-mentioned distributed resource management system may also have the following features: the resource management control unit includes a power-on control subunit, which is used to set a timer to wait for the resource board to which the resource management board belongs to be normal after the system is powered on. Run, and start the process of obtaining global shared resources, and start the process of mapping establishment after the timer expires.

Further, the above-mentioned distributed resource management system may also have the following features: the resource management control unit includes a real resource change processing subunit, which is used for when the real resource fails to operate normally or when it receives a notification from other resource management boards that the real resource cannot When notified of normal operation, the status of the real resource is set as unavailable. When the real resource has been mapped, it also notifies the resource management board using the real resource to release the mapping relationship between its virtual resource and the real resource, and tries to provide virtual resource to create a new mapping.

Further, the above-mentioned distributed resource management system may also have the following features: the real resource change processing subunit is also used to set the status of these real resources as available when the available real resources increase. Create mappings between virtual resources of the same kind that have not yet been mapped and these real resources, and add redundant available real resources to the global shared resource table.

Further, the above-mentioned distributed resource management system may also have the following features: the resource management control unit includes a real resource change processing subunit, which is used to try to establish a mapping relationship with real resources when the configured virtual resources increase ; When the configured virtual resources decrease, cancel the existing mapping relationship of the virtual resources and delete the virtual resources. When the real resource is not in the resource management board, notify the resource management board to set its status as available.

Furthermore, the above-mentioned distributed resource management system may also have the following features: the resource management module further includes a mapping relationship adjustment unit, which is used to regularly check the utilization rate of the virtual resources of the resource management board, if a certain mapped virtual resource If the utilization rate is lower than a certain set value, the mapping relationship between the virtual resource and the real resource will be released, and the state of the real resource will be made available. If the utilization rate of an unmapped virtual resource is greater than a certain set value, Then establish a mapping relationship for it to find available real resources.

Based on the above ideas, the present invention also provides a dynamically adaptive distributed resource management method, which is applied to a distributed resource management system including multiple resource management boards and multiple resource boards, including the following steps:

(a) All real resources and virtual resources required by each resource management board are configured in the system, and these resources are identified and stored in the resource management board;

(b) After the resource management board is successfully powered on, it monitors the status of each real resource configured for it and marks the status, and regularly obtains the information of its available real resources from other resource management boards to realize global shared resources. regular update;

(c) The resource management board searches for virtual resources of the same type that are available on the board and other resource management boards for the virtual resources configured on the board that have not been mapped to real resources, and records the mapping relationship between the two after finding it, and Set the state of the real resource as mapped, and after the processing is completed, use the remaining available real resources as global shared resources;

(d) When applying for resources, the resource management board allocates available virtual resources to the resource usage module and returns the real resource identifier corresponding to the virtual resources, and returns a failure message if there is no available virtual resource.

Further, the above-mentioned distributed resource management method may also have the following characteristics: the resource management board records the information of real resources, virtual resources and global shared resources and the association between information by saving the following list: real resource table, record The identifier and status flag of each real resource monitored by the resource management board, and the identifiers of other resource management boards using the real resource; the virtual resource table records the identifier and mapping of each virtual resource configured by the resource management board flags and mapped real resource identifiers; and a global shared resource table, which records the identifiers of each resource management board in the system and the quantity and type of available real resources monitored.

Further, the above-mentioned distributed resource management method may also have the following characteristics: the establishment of the mapping between the virtual resource and the real resource refers to writing the serial number of the corresponding real resource in the record of the virtual resource in the virtual resource table, and using In the real resource table on the resource management board of the real resource, the status of the real resource is set as mapped, and at the same time, the information of the resource management board using the real resource is recorded.

Further, the above-mentioned distributed resource management method may also have the following characteristics: in the step (b), the resource management board regularly sends a request message for obtaining a global resource table from other resource management boards, and other resource management boards receive the message After that, return the type and quantity of available real resources monitored by the board; or, the resource management module regularly broadcasts the real resource information available on the board to other modules.

Further, the above-mentioned distributed resource management method may also have the following characteristics: in the step (b), the resource management board sets a timer when it is powered on, and after the timer expires, the step (c) is performed , and before the timer expires, the real resources available on this board will not be sent or queried as global shared resources.

Further, the above-mentioned distributed resource management method may also have the following characteristics: in the step (c), the resource management board first searches for the same kind of real resources whose state is available on the board; Search for available real resources in the global shared resource information saved by this board, and send a resource borrowing request to the corresponding resource management board when found, and establish a mapping relationship between the virtual resource and the real resource that is allowed to be borrowed after confirmation.

Further, the above-mentioned distributed resource management method may also have the following characteristics: it also includes the following step: the resource management board detects that the real resource cannot operate normally or receives a notification from other resource management boards that the real resource cannot operate normally , set the status of the real resource as unavailable. When the real resource has been mapped, it also notifies the resource management board using the real resource to release the mapping relationship between its virtual resource and the real resource, and tries to establish a new resource for the virtual resource. mapping.

Further, the above-mentioned distributed resource management method may also have the following characteristics: it also includes the following step: when the resource management board detects that the available real resources increase, the status of these real resources is set as available, and the resource management board Create mappings between virtual resources of the same type that have not yet been mapped on the network and these real resources, and add redundant available real resources to the global shared resource table.

Further, the above-mentioned distributed resource management method may also have the following characteristics: it also includes the following steps: when the virtual resources configured by the resource management board increase, try to establish a mapping relationship with real resources; when the configured virtual resources decrease , cancel the existing mapping relationship of the virtual resource and delete the virtual resource. When the original mapped real resource is in the resource management board, set its status as available and add it to the global shared resource table. The real resource is not in the resource management board. , notify the resource management board to which it belongs to make its status available.

Further, the above-mentioned distributed resource management method may also have the following features: it also includes the following step: the resource management board regularly checks the usage rate of the virtual resources of the resource management board, if the usage rate of a certain mapped virtual resource is lower than If a certain setting value is set, the mapping relationship between the virtual resource and the real resource will be released, and the status of the real resource will be made available. If the usage rate of an unmapped virtual resource is greater than a certain setting value, it will find The available real resources establish a mapping relationship.

It can be seen from the above that the biggest feature of the system and method of the present invention is to firstly configure virtual resources (by abstracting the concept of virtual resources), and use the mapping between virtual resources and real resources to achieve the purpose of global shared resources through self-adaptation. This invention ensures that the software implementation part that needs to use resources only needs to apply for resources from the resource management module on this RMB, and there is no problem of borrowing resources across boards, so the time for each resource application is fixed and very fast. Thus, the processing flow of the software for resource application is greatly simplified, the efficiency of the system is improved, and the reliability of the system is also enhanced.

In addition, due to the use of virtual resources for allocation, the versatility of the upper layer software is enhanced. Although real resources are constantly being used and released. But as long as the mapping relationship remains unchanged, there is no impact on the business (upper-layer software), because it only needs to mark the status of the virtual resource as available.

Figure overview

FIG. 1 is a schematic diagram of a network structure of distributed resources in an embodiment of the present invention.

FIG. 2 is a schematic diagram of a resource application process of existing distributed resource management.

FIG. 3 is a schematic diagram of a resource application process under a virtual resource condition in an embodiment of the present invention.

Fig. 4 is a schematic diagram of mapping between DTMF (Dual Tone Multi-Frequency, multi-tone dual-frequency) virtual resources and real resources in an example of the present invention.

FIG. 5 is a schematic flow diagram of RMB1 acquiring global shared resource tables from other RMB in the above example.

Fig. 6 is a schematic flow chart of RMB1 borrowing real resources from other RMB in the above example.

BEST MODE FOR CARRYING OUT THE INVENTION

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

The network structure of the distributed resource management system of the present embodiment is the same as that in Fig. 1, and each block of RMB includes a resource monitoring module, a resource management module and a resource usage module, wherein:

The resource monitoring module is used to monitor the status of the real resources of the RSB board configured for its RMB at all times, and notify the resource management module of the RMB to modify when the status changes. These statuses include: whether the RSB is in place, whether it can run normally, whether the RSB Whether the real resources on the server are damaged or not.

The resource usage module is used to apply for resources from the resource management module on this RMB.

The resource management module is used to record the status and usage of the real resources monitored by the RMB, obtain and record the available real resource information of each RMB board regularly, find available real resources for the virtual resources configured by the RMB, and establish a mapping relationship between them , and allocate available virtual resources and return corresponding real resource numbers when resource applications are received. It further includes the following units:

The resource information storage unit is used to save the real resource table, the virtual resource table and the global shared resource table.

The real resource table records the serial number and status of each real resource monitored by this RMB, the RMB serial number using this real resource (it can be defaulted when used by this RMB), etc. Real resources are identified by numbers. Each RSB board is assigned a number. When multiple real resource instances are provided on the RSB board, a number is also assigned to the real resource instance. In this way, the number can be used to uniquely determine which RSB board is which. A real resource instance.

The virtual resource table records the number of each virtual resource configured in this RMB, the mapping flag and the mapped real resource number. RMB virtual resources can be configured according to needs, that is, as many as needed can be configured, and the configuration can be realized manually or through registration.

The global shared resource table records the number of this RMB and other RMB in the system, its monitoring resource type, and the number of available real resources. The available real resources in the table are in normal operation and have no mapping relationship with virtual resources, and can be used by all RMB Real resources used.

The shared resource information maintenance unit is used to regularly send messages to other RMB to obtain global shared resources or return the real resource quantity and type available to the RMB after receiving the message, and realize the global shared resource list according to the information obtained from other RMB At the same time, when the local RMB has completed the on-board mapping and there are available real resources, these available real resources will be added to the global resource sharing table for query. In this way, fast mapping of virtual resources and real resources is realized on the RMB.

The mapping establishment processing unit is used to find available real resources of the same kind for the virtual resources configured by the RMB and establish a mapping relationship between them. include:

The on-board mapping establishment subunit is used to search for the available real resources of the same type in the real resource table of this RMB for virtual resources that have not yet been mapped, then set the state of the real resources as mapped and create Fill in the real resource number in the resource record.

The inter-board mapping subunit is used to search the global shared resource table to find available real resources on other RMB when there is no real resource available in this RMB, send a request to the RMB after finding it, and record it in the virtual resource after confirmation Fill in the serial number of the real resource in , and delete the record corresponding to the real resource or invalidate it when receiving a message of refusal to borrow.

The inter-board mapping confirmation subunit is used to judge the current status of these real resources when receiving requests for borrowing real resources from other RMB, return a confirmation message when available, and set the status of these real resources as mapped , otherwise return a message rejecting the borrow.

The resource allocation unit is used to allocate available virtual resources (virtual resources are only available after mapping with real resources) when receiving resource applications, and return the corresponding real resources obtained through the virtual resource table. The resource number, if no virtual resources are available, a failure message will be returned.

The resource management control unit is used to coordinate and control each unit and complete the adaptive management of distributed resources, further including:

The power-on control subunit is used to set a timer to wait for the normal operation of the RSB to which the RMB belongs after the system is powered on, and start the process of obtaining global shared resources, and start the process of mapping establishment after the timer expires.

The real resource change processing subunit is used to set the state of the real resource as unavailable when the real resource decreases or receives a notification from other RMB that the real resource cannot operate normally, and also notifies when the real resource has been mapped The RMB using the real resource cancels the mapping relationship between its virtual resource and the real resource, and tries to establish a new mapping for the virtual resource. When the available real resources increase, set the status of these real resources as available, establish mappings with these real resources for unmapped virtual resources of the same kind on this RMB, and add redundant available real resources to the global shared resource table.

The virtual resource change processing subunit is used to try to establish a mapping relationship with real resources when the configured virtual resources increase. When the configured virtual resource is reduced, cancel the existing mapping relationship of the virtual resource (if any), delete the virtual resource from the virtual resource table, and set the status of the original mapped real resource as available when it is in this RMB And join the global shared resource table, when the real resource is not in this RMB, notify its RMB to set its status as available.

Based on the above distributed resource management system, it is necessary to configure all real resources and virtual resources required by each RMB before the system runs, number these resources and write them into their respective lists in the RMB. This embodiment assumes that available real resources are more than configured virtual resources.

After the system is powered on, RMB1 completes the initial resource mapping process including the following steps:

Step 1, after RMB1 is powered on successfully, at first send the event message that obtains global shared resource to the monitoring module of other RMB so as to obtain the corresponding record of other RMB in the global shared resource table, set a delay timer simultaneously (Ti, i can be according to Programming needs to be set arbitrarily), waiting for the normal operation of the RSB board monitored by the monitoring module on RMB1;

Step 2, before the timer (Ti) on the RMB1 expires, when the monitoring module of RMB1 finds that the RSB it monitors is running normally, it immediately sets the flag (or status bit) in the corresponding real resource table of the RSB available on the logo;

Before the timeout message of the delay timer (Ti) arrives, when other RMB sends an event message to RMB1 to acquire global shared resources, RMB1 has the following two processing methods: 1) Not responding; 2) Responding to the requester RMB1 in the global shared resource table There are currently no shared resources available in . One of the two methods can be selected, and the purpose is to ensure that other RMB will not have available resource information of RMB1 in their global shared resource table before the timer (Ti) of RMB1 expires.

Step 3: After RMB1 receives the event that its own timer (Ti) times out, it finds the virtual resources that have not been mapped to the real resources from the virtual resource table in turn, and then finds that the status bit is available and is the same from the real resource table. type of real resource, then fill in the number of the real resource in the record of the virtual resource in the virtual resource table, and set the state of the status bit of the real resource in the real resource table as mapped, so as to realize RMB1 monitoring The mapping between RSB resources and RMB1 virtual resources;

Step 4, determine whether all the virtual resources configured by RMB1 have been mapped with real resources, if yes, perform step 5, otherwise, perform step 6;

Step 5, check whether there are real resources whose status bit is an available flag on RMB1, and if so, put all the remaining available real resources into the global shared resource table on RMB1, and wait for other RMB to obtain corresponding information regularly. Finish;

Step 6. At this time, there are still virtual resources on RMB1 that have not been mapped, and the RSB monitored by RMB1 is no longer available, then check whether other RMB has the same type of available real resources from the global shared resource table of RMB1. If Yes, go to step 7, otherwise go to step 11;

Step 7, RMB1 sends a request message to borrow a real resource to other RMB (assumed to be RMB2) monitoring the real resource;

Step 8: After RMB2 receives the request message to borrow real resources, it judges whether there are real resources available at present, if yes, executes step 9, otherwise, returns a failure message, and RMB1 deletes (or invalidates) the records related to the real resources ), and then return to step six, that is, to search for other available real resources in the global shared resource table;

Step 9: RMB2 determines the real resources to be mapped with the virtual resource, sets the status of these real resources as mapped in the real resource table, and records the number of the borrowed RMB1, and then returns to RMB1 a confirmation that the real resource is allowed to be borrowed message, and provide the borrowed real resource number;

Step ten, RMB1 establishes the mapping relationship between the virtual resource and the borrowed real resource after receiving the response message of borrowing the real resource, and ends;

Step eleven, at this time, if there are still virtual resources that cannot find the corresponding real resources, the operator on duty is notified to handle it.

It can be seen that in order to avoid the complexity and uncertainty of the process, the above process selects the resources monitored by the RMB when performing resource mapping on the virtual resources on the RMB, especially when the RMB is just powered on, the RMB needs to wait for a short period of time Confirm that the resources monitored by this RMB are successfully running. Only when the resources monitored by this RMB are still unable to run within the waiting period can the idle resources monitored by other RMB be mapped.

When the system is running stably (after completing the above preliminary mapping process), it is necessary to maintain the global shared resource table and perform resource allocation. In addition, when real resources increase or decrease, and virtual resource allocation increases or decreases, the mapping relationship between the two needs to be processed.

Maintenance of the global shared resource table

In order to maintain the global shared resource table on each RMB and realize real-time refresh, after the RMB is powered on, it will set A timer, which regularly sends request messages to other RMB boards to obtain the global resource table, and other RMB boards return the type and quantity of available real resources monitored by this board, and the RMB fills in the global shared resource table according to these information, including those with monitoring modules Fields such as RMB number, resource category, and the number of available real resources.

The update of the global shared resource table data can also be implemented in other ways, such as: the resource management module regularly broadcasts the real resource information available on this module to other modules.

Handling when real resources decrease

When the system is running, the monitoring module of RMB monitors the running status of its RSB at all times. Suppose RMB1 detects that the RSB monitored by this RMB or some real resource instances on the RSB cannot work normally, resulting in a decrease in real resources, and execute the following processing flow:

Step A, RMB1 marks the corresponding status bits in the real resource table of all real resource instances that cannot work normally as unavailable;

Step B, RMB1 searches the local real resource table, and judges whether the real resource has a mapping relationship with the virtual resource, if not, end it directly, otherwise execute the next step;

Step C, RMB1 determines whether the RMB using the real resource is the original RMB according to the record in the real resource table, and if so, directly cancels the mapping relationship between its virtual resource and the real resource, that is, deletes the real resource in the corresponding record of the RMB1 virtual resource table If it is not the real resource monitored by this RMB, immediately notify the RMB using the real resource. After receiving the notification, the RMB will immediately cancel the mapping relationship between the real resource instance and the virtual resource in the virtual resource table, and execute Next step;

Step E, use the RMB of the real resource to check whether there is a resource usage module occupying the virtual resource, if so, immediately notify the resource usage module to perform corresponding processing, and execute the next step, otherwise, directly execute the next step;

Step F, use the RMB of the real resource to find the available real resource for the virtual resource locally to establish a mapping relationship, if not found, then try to establish the virtual resource and the RSB resource monitored by other RMB according to the method from step 6 to step 11 mapping relationship.

If the reduction of real resources is caused by the reduction of RSB boards, in step A, the real resources can be directly deleted from the real resource table.

Handling when available real resources increase

When the system is running, assume that RMB1 detects that the RSB monitored by this RMB has a single board or real resource instance that can run normally. For example, the RSB monitored by this RMB does not run normally before the timer (Ti) (Ti) starts running after a timeout, resulting in an increase in available real resources, and executes the following processing flow:

Step H, RMB1 sets the status of these real resources as available in the real resource table;

Step I, RMB1 checks whether there are virtual resources of the same type that have not yet been mapped with real resources in the virtual resource table, if there is, execute step J, otherwise, execute step K;

Step J, RMB1 establishes the mapping relationship between the virtual resource and the new real resource, if there are redundant new real resources, go to the next step, otherwise, end;

Step K: put the newly added real resources that have not been mapped into the global shared resource table of the current RMB, and wait for the timing of other RMB to obtain corresponding information.

Processing when the configured virtual resources increase

When the system is running, assuming that the virtual resource configured for RMB1 increases, it will be processed according to the following process: RMB1 first checks whether there is any available real resource in the real resource table of this board, and if so, establishes the mapping relationship between the two; if there is no available real resource If the real resource or some virtual resources have not been mapped, try to establish the mapping relationship between the virtual resource and other RSB resources monitored by RMB according to the method from step 6 to step 11.

Processing when the configured virtual resources decrease

When the system is running, assuming that the virtual resources configured for RMB1 decrease, the process will be processed as follows: RMB1 directly releases the mapping relationship between the virtual resources and the original real resources, and then deletes the virtual resources in the virtual resource table. If the original real resources If the resource is a local real resource, its status will be directly changed to available. If it is a real resource monitored by another RMB, then the RMB will be notified, and the RMB will change the status of the original real resource to available.

The process of applying for resources

FIG. 3 is a resource application process in the resource management mode using virtual resources in this embodiment. The resource management module of the RMB only manages the virtual resources of this RMB, so that when a resource usage module (such as a call processing module) applies for resources from the resource management module on this RMB, what it applies for is an available virtual resource (virtual resources are only available when they are the same as real resources) Only available after mapping), the resource management module judges whether the RMB has available virtual resources, and if not, returns a failure message to the resource usage module. If yes, assign a virtual resource to it, obtain the number of the unique real resource corresponding to the virtual resource through the virtual resource table, and return it to the resource usage module.

Therefore, in this embodiment, through the automatic maintenance of the mapping relationship, there is no need to borrow resources across boards, so that the time for each resource usage module to apply for resources is fixed and very fast. Moreover, the processing flow of the resource usage module is greatly simplified and the efficiency is improved.

The method in the above embodiment will be described in detail below through an application example.

Figure 4 shows the mapping relationship between virtual resources and real resources in this application example. Now there are 10 real DTMF resources, respectively numbered DTMF1~DTMF10, 3 resource management boards RMB, numbered RMB1~RMB3, each resource management board RMB is configured with 3 virtual DTMF resources, and the monitoring module of RMB1 is configured 2 real resources (DTMF1 and DTMF2), the monitoring module of RMB2 is configured with 4 real resources (DTMF3~DTMF6), and the monitoring module of RMB3 is configured with 4 real resources (DTMF7~DTMF10), as indicated by the solid line in Figure 4 this configuration relationship.

According to the agreed rules: monitor the virtual resources on the RMB and select the resources monitored by this RMB when performing resource mapping. When all the boards are powered on and running normally, RMB1, RMB2 and RMB3 will start, and the real resources DTMF1~DTMF10 will also start normally. , then the virtual DTMF resources of RMB2 are mapped one-to-one with the real resources DTMF3-DTMF5, and similarly the virtual DTMF resources of RMB3 are mapped one-to-one with the real resources DTMF7-DTMF9, as shown by the dotted line in Figure 4; assuming that the real DTMF6 of RMB2 is still In the available state, the real DTMF10 monitored by RMB3 is also in the available state. RMB1 configures 3 virtual DTMF resources to map with the real resources DTMF1 and DTMF2 monitored by this RMB. There is still a virtual DTMF3 resource that has not been mapped, so it can only be temporarily empty, and the virtual DTMF3 resource is unavailable.

After RMB1 is successfully powered on, it first sends a global resource table request message to other RMB to obtain the corresponding records in the global shared resource table, so there may be two records in the global shared resource table on RMB1, that is, RMB2 has an available Real resource DTMF6, there is a real resource DTMF10 available on RMB3. In order to maintain the refresh of the global shared resource table on each RMB, the RMB sets a timer after obtaining the corresponding record of the global shared resource table for the first time from other RMB (according to the configuration, how many RMB can be known in total) after power-on , periodically send a global resource table request message to other RMB to obtain other RMB global shared resource tables, as shown in Figure 5, that is, RMB1 sends a global resource table request message to RMB2 and RMB3, and transfers RMB2 and RMB3 in the global shared resource table The corresponding information is obtained from RMB1, and RMB2 also fills in the global shared resource table on this board with the information obtained from RMB1 and RMB3, and RMB3 also fills in the global shared resource table on this board with the information obtained from RMB1 and RMB2.

As shown in Figure 6, when RMB1 finds from the global shared resource table that there is an available real resource DTMF6 on RMB2 and that there is an available real resource DTMF10 on RMB3, it is assumed that RMB1 first sends a request message to borrow real resources to RMB2, and RMB2 receives the borrowed real resource After requesting the message, scan whether the real DTMF resource monitored by this RMB is really surplus and not borrowed by other RMB. It turns out that DTMF6 is available, so it is marked on the DTMF6 resource that it is managed by RMB1, and then the real resource is borrowed from RMB1 After receiving the response message of borrowing the real resource, RMB1 completes the mapping relationship between the virtual resource DTMF3 and the real resource DTMF6.

During the running process, RMB2 finds that the DTMF6 it monitors cannot work normally, so RMB2 finds that DTMF6 is managed by RMB1 from the DTMF resource, so it immediately notifies RMB1 that DTMF6 is unavailable, and RMB1 immediately connects the virtual DTMF resource with the DTMF resource after receiving the message. The mapping relationship between DTMF6 is removed, and check whether there is a call processing module to occupy, if there is, immediately notify the corresponding call processing module to do corresponding processing; then check whether there is available DTMF in the global shared resource table, if there is , then repeat the process in Figure 5, if not, the operator on duty can be notified through sound, light and other alarms, indicating that there are virtual resources but no corresponding real resources, and the operator on duty will intervene. For example, replace the RSB that cannot work or configure a new RSB to solve the problem in advance, instead of waiting until the resource is really unavailable to give an alarm, so as to ensure the reliability of the system.

second embodiment

In the first embodiment, under the condition that the real resources configured in the whole system are more than the configured virtual resources, and the configured real resources are all working normally, the processing flow can fully guarantee the reliable operation of the system. However, when the configured virtual resources exceed the configured real resources, or there are too many real resources that cannot work, resulting in fewer working real resources than the configured virtual resources, if the resources are used unevenly, some virtual resources on RMB will appear. Due to the low utilization rate of resources, the mapped real resources are occupied and not used. On other RMB, virtual resources are not mapped to real resources, resulting in virtual resources being unavailable, which in turn causes resource usage modules to have real resources that are not used. The following situation occurs that the resources cannot be applied for.

In order to overcome this situation, on the basis of the method and system in the first embodiment, this embodiment proposes a fully dynamic adaptive mechanism, that is, dynamically adjusts the mapping relationship according to the usage rate of virtual resources when the system is running stably. Add a mapping relation adjustment unit in the resource management module, be used to carry out following processing: set a timer Tj after the stable operation of the system of RMB single board (timing time can be arbitrarily set according to programming needs), timer Tj is timed, Check the utilization rate of the virtual resources of this RMB. If the utilization rate of a virtual resource is lower than a certain set value, the mapping relationship between the virtual resource and the real resource will be released, and the real resource temporarily occupied by the RMB will be released. resources, set its status as available, and add it to the global shared resource table through regular updates; if the usage rate of a virtual resource is greater than the set value and there is no mapping with the real resource, it will be re-created It looks for available real resources to establish a mapping relationship to increase the number of available virtual resources. This dynamic adaptive method is only enabled when the real resources that can work are less than the configured virtual resources, and it is not necessary to enable it under normal circumstances.

To sum up, with the resource management method using virtual resources provided by the present invention, since there is an adaptive processing flow, and the automatic mapping between virtual resources and real resources is realized in the non-call flow, the above example will not appear Multiple cross-board resource calls lead to call loss.

Industrial Applicability

The invention can be used in a distributed computer system, realizes the management of distributed resources through the configuration of virtual resources, and greatly simplifies the software processing flow of applying for using resources.

Claims (19)

1. A dynamically adaptive distributed resource management system, comprising a plurality of resource management boards and a plurality of resource boards, wherein the resource management board includes a resource monitoring module and a resource management module, and the resource board has one or more Real resources, characterized by: The resource monitoring module is used to monitor the status of real resources on several resource boards configured for the resource management board and notify the resource management module of the resource management board; The resource management module is used to record the status and usage of real resources monitored by the resource management board, regularly acquire and record the information of available real resources on each resource management board, and find available virtual resources for the virtual resources configured by the resource management board. The same kind of real resources and the establishment of the mapping relationship between the two, when the resource application is received, the available virtual resource is allocated and the information of the real resource mapped to it is returned. 2. The distributed resource management system according to claim 1, wherein the resource management module further comprises the following units: The resource information storage unit is used to record the status of each real resource monitored by the resource management board and the information of the resource management board using the real resource, and the information of each virtual resource configured by the resource management board and its mapped real resource , and available real resource information monitored by each resource management board in the system; The shared resource information maintenance unit is used to regularly obtain the information of available real resources from other resource management boards, and realize the regular update of the global shared resources. Available real resources can be published or queried as global shared resources; The resource allocation unit is configured to allocate an available virtual resource to the resource utilization module and return a real resource identifier corresponding to the virtual resource when receiving a resource application from the resource utilization module, and return a failure message if there is no available virtual resource; The mapping establishment processing unit is used to search for available real resources of the same type globally for the virtual resources configured by the resource management board and establish the mapping relationship between them; The resource management control unit is used to coordinate and control each unit of the resource management module to complete various functions of the resource management module. 3. The distributed resource management system according to claim 2, wherein the following list is preserved in the resource information storage unit: The real resource table records the identifier and status flag of each real resource monitored by the resource management board, as well as the identifiers of other resource management boards using the real resource; The virtual resource table records the identification, mapping identification and mapped real resource identification of each virtual resource configured by the resource management board; The global shared resource table records the identification of each resource management board in the system and the quantity and type of available real resources monitored. 4. The distributed resource management system according to claim 2, wherein the mapping establishment processing unit further comprises: The on-board mapping establishment subunit is used to search for the available real resources of the same type in the real resource table of the resource management board for the virtual resources that have not been mapped, set the status of the found real resources as mapped and record the virtual resources. The mapping relationship between the resource and the real resource; Inter-board mapping establishes a subunit, which is used to search for saved global shared resources, search for real resources available on other resource management boards, send a borrowing request to the resource management board after finding it, and record the virtual resource and the real resource after confirmation Mapping relationship, delete the record corresponding to the real resource or invalidate it when receiving a message of refusal to borrow; The inter-board mapping confirmation subunit is used to judge the current status of these real resources when receiving requests for borrowing real resources from other resource management boards, return confirmation messages when they are indeed available, and set the status of these real resources to Mapped, otherwise a borrow rejection message is returned. 5. The distributed resource management system according to claim 2, wherein the resource management control unit includes a power-on control subunit, which is used to set a timer to wait for the resource management board after the system is powered on. The resource board to which it belongs runs normally, and starts the process of obtaining global shared resources, and starts the process of mapping establishment after the timer expires. 6. The distributed resource management system according to claim 5, characterized in that, the resource management control unit includes a real resource change processing subunit, which is used for when the real resource cannot operate normally or receives a message from other resource management boards When the notification that the real resource cannot run normally, the status of the real resource is set as unavailable. When the real resource has been mapped, the resource management board using the real resource is also notified to release the mapping relationship between the virtual resource and the real resource. And try to create a new mapping for this virtual resource. 7. The distributed resource management system according to claim 6, wherein the real resource change processing subunit is further configured to set the status of these real resources as available when the available real resources increase, based on The virtual resources of the same kind that have not been mapped on the resource management board are mapped with these real resources, and the redundant available real resources are added to the global shared resource table. 8. The distributed resource management system according to claim 5, wherein the resource management control unit includes a real resource change processing subunit, which is used to try to establish a real resource for it when the configured virtual resource increases. When the configured virtual resource decreases, the existing mapping relationship of the virtual resource is released and the virtual resource is deleted. When the original mapped real resource is in the resource management board, its status is set as available and added to the global share Resource table, when the real resource is not in the resource management board, notify the resource management board to set its status as available. 9. The distributed resource management system according to claim 1, wherein the resource management module further includes a mapping relationship adjustment unit, which is used to regularly check the utilization rate of the virtual resources of the resource management board, if a certain If the usage rate of the mapped virtual resource is lower than a certain set value, the mapping relationship between the virtual resource and the real resource will be released, and the status of the real resource will be set to available. If the usage rate of an unmapped virtual resource is greater than a certain Set the value, and establish a mapping relationship for it to find available real resources. 10. A dynamically adaptive distributed resource management method, applied to a distributed resource management system including multiple resource management boards and multiple resource boards, comprising the following steps: (a) All real resources and virtual resources required by each resource management board are configured in the system, and these resources are identified and stored in the resource management board; (b) After the resource management board is successfully powered on, it monitors the status of each real resource configured for it and marks the status, and regularly obtains the information of its available real resources from other resource management boards to realize global shared resources. regular update; (c) The resource management board searches for virtual resources of the same type that are available on the board and other resource management boards for the virtual resources configured on the board that have not been mapped to real resources, and records the mapping relationship between the two after finding it, and Set the state of the real resource as mapped, and after the processing is completed, use the remaining available real resources as global shared resources; (d) When applying for resources, the resource management board allocates available virtual resources to the resource usage module and returns the real resource identifier corresponding to the virtual resources, and returns a failure message if there is no available virtual resource. 11. The distributed resource management method according to claim 10, characterized in that, in the resource management board, the information of real resources, virtual resources and global shared resources and the association relationship between the information are recorded by saving the following list: Resource table, which records the identification and status flag of each real resource monitored by this resource management board, and the identification of other resource management boards using this real resource; virtual resource table, records each virtual resource configured by this resource management board The identifier of each resource management board in the system, the mapping identifier and the mapped real resource identifier; and the global shared resource table, which records the identifier of each resource management board in the system and the quantity and type of available real resources monitored. 12. The distributed resource management method according to claim 11, wherein said establishing a mapping between a virtual resource and a real resource refers to writing the serial number of the corresponding real resource in the record of the virtual resource in the virtual resource table , and set the status of the real resource as mapped in the real resource table of the resource management board using the real resource, and record the information of the resource management board using the real resource at the same time. 13. The distributed resource management method according to claim 10, characterized in that, in the step (b), the resource management board regularly sends a request message for obtaining a global resource table from other resource management boards, and other resource management boards After receiving the message, return the type and quantity of available real resources monitored by the board; or, the resource management module regularly broadcasts the real resource information available on the board to other modules. 14. The distributed resource management method according to claim 10, wherein in said step (b), the resource management board sets a timer when powering on, and after the timer expires, executes Step (c), and before the timer expires, the available real resources of the board are not sent or queried as global shared resources. 15. The distributed resource management method according to claim 10, characterized in that, in the step (c), the resource management board first searches for available resources of the same kind on the board, and does not find them on the board. , and then search for available real resources in the global shared resource information saved by the board, and then send a resource borrowing request to the corresponding resource management board when found, and establish a relationship between the virtual resource and the real resource that is allowed to be borrowed after confirmation Mapping relations. 16. The distributed resource management method according to claim 10, further comprising the following steps: when the resource management board detects that the real resource cannot operate normally or receives a notification from other resource management boards that the real resource cannot When notified of normal operation, the status of the real resource is set as unavailable. When the real resource has been mapped, it also notifies the resource management board using the real resource to release the mapping relationship between its virtual resource and the real resource, and tries to provide virtual resource to create a new mapping. 17. The distributed resource management method according to claim 10, further comprising the step of: when the resource management board detects that the available real resources increase, the status of these real resources is set as available, as Establish the mapping between virtual resources of the same kind that have not been mapped on this resource management board and these real resources, and add redundant available real resources to the global shared resource table. 18. The distributed resource management method according to claim 10, further comprising the following steps: when the virtual resources configured by the resource management board increase, try to establish a mapping relationship with real resources; When the number of virtual resources decreases, cancel the existing mapping relationship of the virtual resource and delete the virtual resource. When the original mapped real resource is on the resource management board, set its status to available and add it to the global shared resource table. When the current resource management board is active, notify the resource management board to which it belongs to make its status available. 19. The distributed resource management system according to claim 10, further comprising the following steps: the resource management board regularly checks the usage rate of the virtual resources of the resource management board, if a certain mapped virtual resource If the utilization rate is lower than a certain set value, the mapping relationship between the virtual resource and the real resource will be released, and the state of the real resource will be made available. If the utilization rate of an unmapped virtual resource is greater than a certain set value, Then establish a mapping relationship for it to find available real resources.

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