CN101202632A - System and method for data transmission of dual controller system and method of communication path selection - Google Patents
System and method for data transmission of dual controller system and method of communication path selection Download PDFInfo
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- CN101202632A CN101202632A CNA2006101669530A CN200610166953A CN101202632A CN 101202632 A CN101202632 A CN 101202632A CN A2006101669530 A CNA2006101669530 A CN A2006101669530A CN 200610166953 A CN200610166953 A CN 200610166953A CN 101202632 A CN101202632 A CN 101202632A
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Abstract
A data transmission system and method as well as communicating path selecting method of a double controller system is applied to a first controller and a second controller in the double controller system; wherein, the communicating path selecting method includes the following steps: first, a corresponding transmission medium is selected according to the data request characteristic transmitted by a controller and then the data request is switched into a data form compatible with a medium interface of the selecting transmission medium to transmit to a corresponding medium drive part connected with the medium interface and the data request is transmitted to another controller through the medium drive part and the corresponding medium controller connected with the medium drive part, and then a path with the highest transmission efficiency is selected to realize the data transmission between two controllers.
Description
Technical field
The present invention relates to a kind of between controller the method for transfer of data, relate in particular to a kind of between two controllers of double-controller system the system and method for transmission data.
Background technology
Usually, in the environment that double-controller system is applied to data integrality and service continuity are had relatively high expectations, holder LAN (SAN, Storage Area Network) for example.The effect of double-controller system is, when a controller wherein when promptly master server is providing service, uses the mirror back-up server of another controller as this master server as server.Therefore, when master server breaks down and can't continue to provide when service, backup server is then taken over the service of master server, and then ensures the integrality of data and the continuity of service.
Therefore, need set up internal communication link between two controllers of double-controller system, for example the Ethernet card in order to the transmission data, keeps the synchronous regime of two controllers to connecting etc.Sometimes, in double-controller system, can there be many links that this intercommunication mechanism is provided, for example optical fiber interface, Ethernet interface etc. simultaneously.But each link is owing to the difference of its transmission medium and protocol specification, thereby the usefulness when transmission different types of data package also is not quite similar.For example, the transmission frequency of some communication link is higher, but MTU is less, therefore is fit to the small-scale data packet of transmission; Perhaps, some communication link transmission frequency is lower, and MTU is bigger, only could embody its usefulness when the big block data of transmission.
Therefore, traditional single-pathway internal communication link is subjected to the restriction of transmission medium, and is often only comparatively suitable to the data in certain data packet scale scope, in case transmission exceeds the data packet of this scope, and the problem that then exists usefulness to reduce.And when the scale of transmission data constantly occurred changing, transmission usefulness also can correspondingly produce very great fluctuation process.
Summary of the invention
In order to solve problem and the defective in the above-mentioned known technology, the object of the present invention is to provide a kind of data transmission system and method and communication path selection method of double-controller system, to select the suitable internal communication link of transfer of data, improve data transmission efficiency.
The data transmission system of double-controller system provided by the present invention, communicating by letter between first controller that is applied to double-controller system and second controller, described data transmission system comprises: intercommunication module, data route layer, Media Interface Connector layer and media drive layer.Wherein, this intercommunication module is sent the request of data of corresponding this first controller/this second controller, with the data packet that transmits a certain size to this second controller/this first controller, this data route layer receives the request of data that this intercommunication module is sent, and selects transmission medium according to the size characteristic of the data packet of this request of data transmission; This Media Interface Connector layer comprises a plurality of Media Interface Connectors, and this Media Interface Connector layer receives this request of data and is dispensed to the Media Interface Connector corresponding with the transmission medium of selecting, and the translation data request is the data format of Media Interface Connector compatibility, to be sent to the respective media drive division; This media drive layer comprises a plurality of media drive portion, and its respective media drive division receives this request of data, and sends this request of data to this second controller/this first controller by the respective media controller.
According to the data transmission system of double-controller system of the present invention, wherein this data route layer is selected transmission medium by the circulation (Throughput) of some transmission medium data packet.And the transmission medium that has than high throughput when selecting wherein to transmit this kind sized data package transmits, when a plurality of transmission mediums have identical or close circulation to the data packet that is transmitted, then select to have in a plurality of transmission mediums the transmission medium of low central processing unit occupation rate.
The data transmission method of double-controller system provided by the present invention, be applied to first controller of double-controller system and the transfer of data between second controller, said method comprising the steps of: receive the request of data that the communication system of this first controller/this second controller is sent, and select corresponding transmission medium according to the size characteristic of the data packet of this request of data transmission; Change the data format of this request of data, to be sent to a corresponding media drive portion that connects with this Media Interface Connector for the Media Interface Connector compatibility corresponding with selecting transmission medium; Control connected one corresponding medium controller by this media drive portion, to send the corresponding medium controller that with medium controller connect of request of data to this second controller/this first controller; By the medium controller of this second controller/this first controller, send request of data to connected one corresponding media drive portion; Receive request of data and be sent to connected one corresponding Media Interface Connector by this media drive portion; And this Media Interface Connector extracts data in the request of data that receives, and transfers data to the communication system of this second controller/this first controller.
According to the data transmission method of double-controller system provided by the present invention, wherein select in a plurality of transmission mediums the higher medium of the circulation of transmission data packet as transmission medium.When the circulation of a plurality of these data packets of some transmission medium is close or identical, then select to have in a plurality of transmission mediums the transmission medium of the transmission medium of low central processing unit occupation rate as the transmission data packet, wherein said central processing unit occupation rate is the occupation rates of a plurality of transmission mediums when transmitting at full capacity.
In addition, the present invention also provides a kind of communication path selection method of double-controller system, be applied to the intercommunication of two controllers of double-controller system, this communication path selection method system may further comprise the steps: according to the request of data that the controller in the double-controller system sends, obtain the transmission data packet size of this request of data; According to the circulation of different transmission mediums when transmitting this data packet in this data packet size computing controller; In described different transmission mediums, select to have the transmission medium of high throughput; And send the transmission medium of the transmission data packet of this request of data to described selection, to transmit of the intercommunication of this request of data in order to two controllers.
The present invention is promptly transmitted the size of data packet according to the data characteristics of system transmissions request, by the circulation of different medium in the routing algorithm comparison system when transmitting the data packet of this kind size, and then selects the highest path of transmission usefulness.Therefore, the multiple communication links complementation that exists in the system can be utilized, select suitable communication links, reach the also maximization of stable transfer usefulness at the data packets of different sizes.
Description of drawings
Fig. 1 is the system block diagrams of the data transmission system of double-controller system of the present invention;
Fig. 2 is the flow chart of steps of the data transmission method of double-controller system of the present invention; And
Fig. 3 is the flow chart of steps of transmission of data packets routing algorithm of the present invention.
Wherein, description of reference numerals is as follows:
10 first controllers, 11 internal system communication softwares
12 data route layers, 13 Media Interface Connector layer
14 media drive layers, 15 hardware layer
20 second controllers, 21 internal system communication softwares
22 data route layers, 23 Media Interface Connector layer
24 media drive layers, 25 hardware layer
102,104,106,108,110,112,114,116 steps
202,204,206,208,210,212 steps
Embodiment
About feature of the present invention and example, existing conjunction with figs. is described in detail as follows preferred embodiment.
With reference to figure 1, the figure shows the system block diagrams of the data transmission system of double-controller system of the present invention.As shown in Figure 1, described double-controller system comprises first controller 10 and second controller 20, different with the single-pathway internal communication link of traditional double-controller system, wherein first controller 10 and second controller 20 include data route layer and Media Interface Connector layer respectively, describe the structure of data transmission system of the present invention in detail below in conjunction with Fig. 1.
The request of data that the data route layer 12 receiving system intercommunication software 11 of first controller 10 send, and the characteristics of foundation request are assigned to request the Media Interface Connector that is fit in the Media Interface Connector layer 13; On the other hand, the request of data that data route layer 12 receives from 13 transmission of Media Interface Connector layer, and mail to internal system communication software 11, to carry out corresponding request of data transmission.
Have a plurality of different medium interfaces in the Media Interface Connector layer 13, and with the corresponding connection of each media drive portion of media drive layer 14.Corresponding media drive portion in the hardware layer 15 in an end of the controller of each different medium and the media drive layer 14 connects, and the other end is by corresponding medium controller connection in the hardware layer 25 of respective link and second controller 20.Annexation between the media drive layer 24 of second controller 20, Media Interface Connector layer 23, data route layer 22 and the internal system communication software 21 is similar to the corresponding assembly in first controller 10, repeats no more here.
Media Interface Connector layer 13 receives the request of data that data route layer 12 sends on the one hand, and changes the data format that this request of data is compatible respective media, to mail to the media drive portion that is connected with the Media Interface Connector of selecting in the media drive layer 14; On the other hand, the request of data that Media Interface Connector layer 13 receives from the transmission of respective media drive division, and extraction valid data wherein mail to data route layer 12.
Determine that below in conjunction with some parameters the computing formula of MEDIA FLOW flux: CTP is the circulation of different medium transmission data packet, MTP is the max-flow flux of different medium, it is the data total amount that the unit interval medium can transmit, unit is byte per second (Bps), for the full duplex medium, circulation is 2 times of single worker's medium of the same race.IOPS is the transmission frequency of medium, and the input and output number of times that promptly can finish on the unit interval medium, unit are input and output number of times per second (IOps), and this parameter is relevant with the physical characteristics of medium, can obtain by method of testing.For example, do not move in system under the situation of other software and service, continuously transmission is of a size of the data packet of medium MTU, and at an input and output number of times that obtains after as a child in this time, divided by 3600 transmission frequencies that can obtain medium.In addition, PS is the size of data packet, is unit with the byte; MTU is the MTU of medium, and unit is a byte.
When on certain medium, transmitting the data packet of certain size, be subjected to the influence of medium MTU, this data packet will be divided into (PS-1)/MTU+1 input-output unit (division is for dividing exactly) herein; Because of the medium transmission frequency is IOPS, the number that the per second transmission is of a size of the data packet of PS is IOPS/ ((PS-1)/MTU+1) again; So current circulation is IOPS * PS/ ((PS-1)/MTU+1).But the circulation that calculates may surpass MTP, and in fact is subjected to the influence of medium transmission rate, and current circulation is the highest can only to reach MTP.Therefore, as follows: CTP=min (MTP, IOPS * PS/ ((PS-1)/MTU+1)) about the computing formula of medium transmission circulation.
In addition, when calculating a plurality of transmission mediums at the circulation of the data packet of a certain size when close or identical, when the medium transmission circulation that promptly calculates differs less than 64KB (kilobytes), 13 selection of data route layer wherein have the medium of low central processing unit occupation rate (CPU Rate) as transmission medium, to reduce the occupation rate of central processing unit, elevator system overall efficiency, wherein said central processing unit occupation rate are the occupation rate of medium when transmitting at full capacity.
Similarly, the function class of the data route layer 22 of second controller 20 and Media Interface Connector layer 23 is similar to the data route layer 12 and the Media Interface Connector layer 13 of first controller 10.
With reference now to Fig. 2,, this figure is the flow chart of steps of data transmission method of the double-controller system of the embodiment of the invention, and the transfer of data embodiment shown in the figure relates to data and is sent to second controller by first controller of dual controller, on the contrary flow process also with.
According to present embodiment, data transmission method of the present invention may further comprise the steps: receive the data transfer request (step 102) that send the first controller system inside, in this request, obtain transmission data packet size (step 104), the transmission medium that is fit to of data-driven packet size feature selecting then, and request of data is mail to the corresponding Media Interface Connector of medium (step 106) of selection.The respective media interface receives this request of data, and conversion request is the data format of Media Interface Connector compatibility, is sent to corresponding media drive portion (step 108).Then, the media drive portion of first controller controls corresponding medium controller and sends a request to second controller (step 110) after receiving request.The medium controller that is connected with the medium controller of first controller in second controller receives request, and transfers to the corresponding media drive portion (step 112) that connects.Then, media drive portion sends request of data to the corresponding Media Interface Connector that connects, to extract valid data (step 114) wherein.At last, the valid data that extract during the respective media interface of second controller will be asked mail to the corresponding systems communications software of second controller (step 116).
About selecting to be fit to the algorithm of transmission medium in the step 106 according to transmission data packet size, detailed step as shown in Figure 3, this figure is the flow chart of steps of transmission of data packets routing algorithm of the present invention.At first, calculate the circulation (step 202) of different transmission mediums when transmitting this data packet in first controller according to the data packet size.Computing formula about circulation is as follows: CTP=min (MTP, IOPS * PS/ ((PS-1)/MTU+1)), wherein CTP is the circulation of different these data packets of some transmission medium, MTP is the max-flow flux of different transmission mediums, IOPS is the transmission frequency of transmission medium, PS is the size of data packet, and MTU is the MTU of transmission medium.
Then, judge different medium about the transport stream flux of this data packet whether identical or close (step 204), but be close when wherein regulation medium transmission circulation differs less than 64KB (kilobytes) according to the circulation of calculating.When identical or close, select to have in the different transmission mediums medium of low central processing unit occupation rate as transmission medium (step 208); Otherwise the medium of selecting wherein to have high throughput is the transmission medium (step 206) of data packet for this reason.After selecting suitable transmission medium, send the transmission medium (step 210) of the transmission data packet of request of data, and pass through of the intercommunication (step 212) of the corresponding interface transmission request of data of transmission medium in order to two controllers to selection.
Though the present invention illustrates with aforesaid preferred implementation, yet is not in order to limit the present invention.Those skilled in the art will realize that change and the retouching carried out all belong to scope of patent protection of the present invention under the scope and spirit situation of the present invention that does not break away from appending claims of the present invention and limited.Please refer to appending claims about the protection range that the present invention limited.
Claims (13)
1. communicating by letter between the data transmission system of a double-controller system, first controller that is applied to this double-controller system and second controller, wherein said system comprises:
The intercommunication module is sent the request of data of corresponding this first controller/this second controller, with the data packet that transmits a certain size to this second controller/this first controller;
Data route layer receives this request of data that this intercommunication module is sent, and selects transmission medium according to the size characteristic of the data packet of this request of data transmission;
The Media Interface Connector layer, comprise a plurality of Media Interface Connectors, this Media Interface Connector layer receives this request of data and is dispensed to and the corresponding Media Interface Connector of the transmission medium of this selection, and changes the data format of this request of data for this Media Interface Connector compatibility, to be sent to the respective media drive division; And
The media drive layer comprises a plurality of media drive portion, and the respective media drive division of this media drive layer receives this request of data, and sends this request of data to this second controller/this first controller by the respective media controller.
2. data transmission system as claimed in claim 1, wherein this data route layer is selected this transmission medium by the circulation of this this data packet of some transmission medium.
3. data transmission system as claimed in claim 2, wherein this data route layer is selected to have in a plurality of these transmission mediums than the transmission medium of the high throughput transmission medium as this data packet of transmission.
4. data transmission system as claimed in claim 3, wherein when the circulation of described a plurality of these data packets of some transmission medium is close or identical, this data route layer selects to have in described a plurality of transmission medium the transmission medium of the transmission medium of low central processing unit occupation rate as the transmission data packet, and wherein this central processing unit occupation rate is the occupation rate of described a plurality of transmission medium when transmitting at full capacity.
5. data transmission system as claimed in claim 4, wherein the circulation computing formula of this this data packet of some transmission medium is:
CTP=min (MTP, IOPS * PS/ ((PS-1)/MTU+1)), wherein CTP is the circulation of this this data packet of some transmission medium, MTP is the max-flow flux of this transmission medium, IOPS is the transmission frequency of this transmission medium, PS is the size of this data packet, and MTU is the MTU of this transmission medium.
6. the data transmission method of a double-controller system is applied to first controller of this double-controller system and the transfer of data between second controller, and this method may further comprise the steps:
Receive the request of data that the communication system of this first controller/this second controller is sent, and select corresponding transmission medium according to the size characteristic of the data packet of this request of data transmission;
Change the data format of this request of data, to be sent to a corresponding media drive portion that connects with this Media Interface Connector for the corresponding Media Interface Connector compatibility of this transmission medium;
Control connected corresponding medium controller via this media drive portion, to send the corresponding medium controller that this request of data connects with this medium controller to this second controller/this first controller;
Via this medium controller of this second controller/this first controller, send this request of data to connected one corresponding media drive portion;
Receive this request of data and be sent to connected one corresponding Media Interface Connector by this media drive portion; And
This Media Interface Connector extracts the data in this request of data that receives, and transmits the communication system of these data to this second controller/this first controller.
7. data transmission method as claimed in claim 6, the step of this correspondence transmission medium of wherein said selection is to select this transmission medium by the circulation of this this data packet of some transmission medium.
8. data transmission method as claimed in claim 7 is wherein selected to have in a plurality of transmission mediums than the transmission medium of the high throughput transmission medium as this data packet of transmission.
9. data transmission method as claimed in claim 8, wherein when the circulation of a plurality of these data packets of some transmission medium is close or identical, select to have in described a plurality of transmission medium the transmission medium of the transmission medium of low central processing unit occupation rate as this data packet of transmission, wherein this central processing unit occupation rate is the occupation rate of described a plurality of transmission medium when transmitting at full capacity.
10. data transmission method as claimed in claim 9, wherein the circulation computing formula of this this data packet of some transmission medium is:
CTP=min (MTP, IOPS * PS/ ((PS-1)/MTU+1)), wherein CTP is the circulation of this this data packet of some transmission medium, MTP is the max-flow flux of this transmission medium, IOPS is the transmission frequency of this transmission medium, PS is the size of this data packet, and MTU is the MTU of this transmission medium.
11. the communication path selection method of a double-controller system, the transmission medium that is applied to the transfer of data communication path of this double-controller system is selected, and this communication path selection method system may further comprise the steps:
According to the request of data that the controller in this double-controller system sends, obtain the transmission data packet size of this request of data;
Calculate the circulation of different transmission mediums when transmitting this data packet in this controller according to this data packet size;
In described different transmission mediums, select to have the transmission medium of high throughput; And
Send the transmission medium of the transmission data packet of this request of data, to transmit this request of data in order to carry out the intercommunication of these two controllers to described selection.
12. communication path selection method as claimed in claim 11, wherein when the circulation of described different these data packets of some transmission medium is close or identical, select to have in the described different transmission medium transmission medium of the transmission medium of low central processing unit occupation rate as this data packet, wherein this central processing unit occupation rate is the occupation rate of described different transmission medium when transmitting at full capacity.
13. communication path selection method as claimed in claim 11, wherein the computing formula of the circulation of this this data packet of some transmission medium is:
CTP=min (MTP, IOPS * PS/ ((PS-1)/MTU+1)), wherein CTP is the circulation of this this data packet of some transmission medium, MTP is the max-flow flux of this transmission medium, IOPS is the transmission frequency of this transmission medium, PS is the size of this data packet, and MTU is the MTU of this transmission medium.
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| CNA2006101669530A CN101202632A (en) | 2006-12-13 | 2006-12-13 | System and method for data transmission of dual controller system and method of communication path selection |
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| CNA2006101669530A CN101202632A (en) | 2006-12-13 | 2006-12-13 | System and method for data transmission of dual controller system and method of communication path selection |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102215245A (en) * | 2010-04-06 | 2011-10-12 | 英业达股份有限公司 | Configuration information synchronization method of dual-controller of storage area network |
| CN102882849A (en) * | 2012-08-29 | 2013-01-16 | 广东威创视讯科技股份有限公司 | Multi-medium communication device and method |
| CN103959724A (en) * | 2011-11-21 | 2014-07-30 | 高通股份有限公司 | Providing path information in mixed communication networks |
| CN105988948A (en) * | 2015-02-13 | 2016-10-05 | 浙江大华技术股份有限公司 | Data transmission method and equipment |
| CN107193767A (en) * | 2017-05-25 | 2017-09-22 | 北京计算机技术及应用研究所 | A kind of double controller storage system caches the data transmission system of mirror image |
| CN112395237A (en) * | 2019-08-19 | 2021-02-23 | 广州汽车集团股份有限公司 | Method and system for communication between at least two controllers |
-
2006
- 2006-12-13 CN CNA2006101669530A patent/CN101202632A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102215245A (en) * | 2010-04-06 | 2011-10-12 | 英业达股份有限公司 | Configuration information synchronization method of dual-controller of storage area network |
| CN103959724A (en) * | 2011-11-21 | 2014-07-30 | 高通股份有限公司 | Providing path information in mixed communication networks |
| CN103959724B (en) * | 2011-11-21 | 2018-11-02 | 高通股份有限公司 | Mix networking path selection and load balance |
| CN102882849A (en) * | 2012-08-29 | 2013-01-16 | 广东威创视讯科技股份有限公司 | Multi-medium communication device and method |
| CN102882849B (en) * | 2012-08-29 | 2016-06-29 | 广东威创视讯科技股份有限公司 | Multi-medium communication device and method |
| CN105988948A (en) * | 2015-02-13 | 2016-10-05 | 浙江大华技术股份有限公司 | Data transmission method and equipment |
| CN105988948B (en) * | 2015-02-13 | 2019-02-12 | 浙江大华技术股份有限公司 | A kind of method and apparatus of data transmission |
| CN107193767A (en) * | 2017-05-25 | 2017-09-22 | 北京计算机技术及应用研究所 | A kind of double controller storage system caches the data transmission system of mirror image |
| CN112395237A (en) * | 2019-08-19 | 2021-02-23 | 广州汽车集团股份有限公司 | Method and system for communication between at least two controllers |
| CN112395237B (en) * | 2019-08-19 | 2023-08-08 | 广州汽车集团股份有限公司 | Method and system for communication between at least two controllers |
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