CN102650932A - Method, equipment and system for accessing data - Google Patents
Method, equipment and system for accessing data Download PDFInfo
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- CN102650932A CN102650932A CN201210097538XA CN201210097538A CN102650932A CN 102650932 A CN102650932 A CN 102650932A CN 201210097538X A CN201210097538X A CN 201210097538XA CN 201210097538 A CN201210097538 A CN 201210097538A CN 102650932 A CN102650932 A CN 102650932A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0602—Interfaces specially adapted for storage systems specifically adapted to achieve a particular effect
- G06F3/061—Improving I/O performance
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0628—Interfaces specially adapted for storage systems making use of a particular technique
- G06F3/0629—Configuration or reconfiguration of storage systems
- G06F3/0635—Configuration or reconfiguration of storage systems by changing the path, e.g. traffic rerouting, path reconfiguration
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0668—Interfaces specially adapted for storage systems adopting a particular infrastructure
- G06F3/0671—In-line storage system
- G06F3/0683—Plurality of storage devices
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- Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
Abstract
The invention provides a method, equipment and system for accessing data. The method comprises the following steps of: transmitting a distribution rule acquisition request to at least one controller in a storage system and receiving a distribution rule of data in a logical volume returned by the controller in a plurality of controllers, wherein the distribution rule comprises distribution information of the data in the logical volume in the controllers, the storage system comprises a plurality of controllers and the data in one logical volume are allocated to the controllers; receiving a data access request, and the data access request comprises an address of the data to be accessed; determining the controller for carrying out data processing on the data to be accessed according to the address and the distribution rule of the data to be accessed; and transmitting a data access request to the determined controller for carrying out data processing on the data to be accessed so as to process the data access request by the determined controller.
Description
Technical field
The present invention relates to memory technology, relate in particular to a kind of access method, equipment and system of data.
Background technology
In comprising the storage system of a plurality of controllers,, can the data of a logical volume be dispensed to each controller in order to promote performance.In addition; Because each controller of main frame and storage system all is connected; And interconnect between each controller, so main frame can be connected to the corresponding controller of this link by the link that main frame is chosen in the multilink need carry out read-write operation to the data on the logical volume time; Initiate read-write requests, thereby carry out read-write operation.
For instance; The topological diagram that Fig. 1 conducts interviews to the data on the logical volume for main frame in the prior art, as shown in Figure 1, when main frame needs certain one piece of data in the access logic volume; Main frame can select a link to connect (for example being connected to controller 3) at random; Because the data of the logic examination paper that distributes in this controller 3 volume are not the data that main frame institute will visit, therefore, controller 3 inquire about obtain this main frame the controller (for example controller 5) of the DATA DISTRIBUTION that will visit; And obtain in the slave controller 5 this main frame the data that will visit, thereby make this main frame have access in can slave controller 3 main frame the data that will visit.
Hence one can see that; When the data that distribute on the controller that main frame is selected at random be not main frame need visit data the time; Not only cause main frame that the data on the logical volume are conducted interviews and exist degree of accuracy not high, promptly the low problem of access efficiency also can cause and carry out lot of data communication between the controller; Thereby make that the communication channel between the controller is taken in a large number, increased the traffic load of controller.
Summary of the invention
The embodiment of the invention provides a kind of access method, equipment and system of data, and it is low to be used for having solved the prior art data access efficiency, and has increased the problem of the traffic load of controller.
First aspect of the embodiment of the invention provides a kind of access method of data, and this method comprises:
At least one controller in storage system sends distribution rule and obtains request; And receive the distribution rule of data in a plurality of controllers in the said logical volume that said controller returns; Wherein, Said distribution rule comprises the distributed intelligence of data in a plurality of controllers in the said logical volume, and said storage system comprises a plurality of controllers, and the data allocations in logical volume is given said a plurality of controllers;
Receive data access request, said data access request comprises the address of data to be visited;
According to the address and the said distribution rule of said data to be visited, confirm said data to be visited are carried out the controller of data processing;
Send said data access request to said definite controller that said data to be visited are carried out data processing, so that said definite controller is handled said data access request.
Another aspect of the embodiment of the invention provides a kind of access means of data, comprising:
The distribution rule acquisition module is used at least one controller to storage system and sends distribution rule and obtain request, and receives the distribution rule of data in a plurality of controllers in the said logical volume that said controller returns; Wherein, said distribution rule comprises the distributed intelligence of data in a plurality of controllers in the logical volume, comprises a plurality of controllers in the said storage system, and the data allocations in logical volume is given said a plurality of controllers;
Receiver module is used to receive data access request, and said data access request comprises the address of data to be visited;
The controller determination module is used for address and said distribution rule according to said data to be visited, confirms said data to be visited are carried out the controller of data processing;
Access modules is used for sending said data access request to said definite controller that said data to be visited are carried out data processing, so that said definite controller is handled said data access request.
Another aspect of the present invention provides a kind of access system of data, comprising: the access means of storage system and data as described above, wherein, said storage system comprises a plurality of controllers.
The technique effect of the embodiment of the invention is: through a distribution rule that controller obtains from storage system; Confirm the address of the data to be visited in the data access request that receives is carried out the controller of data processing; And to the controller transmission data access request of confirming; So that the controller that should confirm is handled this data access request; Owing to can get access to the distribution rule of data in a plurality of controllers in the logical volume, therefore, can confirm accurately that data to be visited carry out the controller of data processing; Thereby solved in the prior art and to have caused the problem of carrying out lot of data communication between the controller because can't confirm visit data to be distributed in which controller, and then reduced the traffic load of controller effectively.
Description of drawings
The topological diagram that Fig. 1 conducts interviews to the data on the logical volume for main frame in the prior art;
Fig. 2 is the process flow diagram of an embodiment of the access method of data of the present invention;
Fig. 3 a and Fig. 3 b are respectively a topological diagram of storage system distributed logic volume of the present invention;
Fig. 4 a and Fig. 4 b are respectively a topological diagram of the access method of data of the present invention;
Fig. 5 is the structural representation of an embodiment of the access means of data of the present invention;
Fig. 6 is the structural representation of an embodiment of the access system of a kind of data of the present invention.
Embodiment
Fig. 2 is the process flow diagram of an embodiment of the access method of data of the present invention; As shown in Figure 2; The method of present embodiment is applied in the access system of data; The access system of said data comprises the storage system with a plurality of controllers, and said storage system is used for giving a plurality of controllers with the data allocations of a logical volume, and then this method can comprise:
In the present embodiment, this data access request can be specially data read request or data write request.In addition, need to prove also that step 101 and step 102 do not have the branch of the priority of execution sequence, can first execution in step 101, execution in step 102 again, also can first execution in step 102, execution in step 101 again.
Address and this distribution rule of step 103, these data to be visited of basis, definite controller that these data to be visited is carried out data processing.
In the present embodiment; Through a distribution rule that controller obtains from storage system; Confirm the address of the data to be visited in the data access request that receives is carried out the controller of data processing; And to the controller transmission data access request of confirming, so that should definite controller be handled by this data access request, owing to can get access to the distribution rule of data in a plurality of controllers in the logical volume; Therefore; Can confirm accurately that data to be visited carry out the controller of data processing, cause the problem of carrying out lot of data communication between the controller because can't confirm visit data to be distributed in which controller, and then reduce the traffic load of controller effectively thereby solved in the prior art.
Further; In of the present invention another implemented; On above-mentioned basis embodiment illustrated in fig. 2, the distribution rule of the data of this logical volume comprises: the address space of distributed data and the mapping relations of controller, the perhaps Distribution Algorithm of the data in the logical volume and parameter; Wherein, this distributed data is the data of DATA DISTRIBUTION on each controller in the logical volume.
In addition; Need to prove, after controller in storage system sends distribution rule and obtains request, in the preset time, do not receive the distribution rule of data in a plurality of controllers in this logical volume that this controller returns; Explain that then this controller possibly break down; At this moment, another controller that can also be in storage system sends distribution rule request, and receives the distribution rule of data in a plurality of controllers in this logical volume that another controller returns.
For instance; Fig. 3 a and Fig. 3 b are respectively a topological diagram of storage system distributed logic volume of the present invention; Shown in Fig. 3 a; On storage system, create a logical volume, and according to the distribution rule of the data in the logical volume, with being distributed in each controller on this storage system of the data discrete in this logical volume.Wherein, create a logic examination paper volume on each controller, this logic examination paper volume is used to store the data of distribution.Then, shown in Fig. 3 b, the distribution rule of the data in this logical volume is stored in each controller in the storage system.
Fig. 4 a and Fig. 4 b are respectively a topological diagram of the access method of data of the present invention; Shown in Fig. 4 a; The access means of data can be selected any controller in the storage system; And obtain request, and receive the distribution rule that this controller returns to the distribution rule that this controller sends the data of logical volume.For example: the distribution rule that sends the data of logical volume to controller 3 obtains request, and receives the distribution rule that controller 3 returns.Then, shown in Fig. 4 b, according to this distribution rule, obtain the controller that the address with data to be visited distributes, for example: controller 6, send data access request to this controller 6, then so that 6 pairs of data access request of this controller are handled.
Further, in yet another embodiment of the present invention, on the basis of above-mentioned each embodiment, this distribution rule can also comprise the mapping relations of each controller and controller chassis, then this method can further include:
When the controller that should confirm is not in the given time handled this data access request,, select another controller in the affiliated controller chassis of this controller of confirming according to the mapping relations of each controller and controller chassis.
Send this data access request to this another controller, so that this another controller is handled this data access request.
In the present embodiment, the mapping relations of this controller and controller chassis are included in the distribution rule of the data in the logical volume.Be that storage system can be divided into groups all controllers in the storage system in advance; And the controller after will dividing into groups is arranged in the controller chassis; Comprise at least two controllers in each controller chassis, promptly controller chassis is meant the later controller group of each controller grouping.Then, be included in the distribution rule of storing in each controller in mapping relations this controller and controller chassis.
Fig. 5 is the structural representation of an embodiment of the access means of data of the present invention; As shown in Figure 5; The access means of the data of present embodiment comprises: distribution rule acquisition module 11, receiver module 12, controller determination module 13 and access modules 14; Wherein, this distribution rule acquisition module 11 at least one controller in storage system sends distribution rule and obtains request, and receives the distribution rule of data in a plurality of controllers in this logical volume that this controller returns; Wherein, this distribution rule comprises the distributed intelligence of data in a plurality of controllers in the logical volume, comprises a plurality of controllers in this storage system, and the data allocations in logical volume is given a plurality of controllers; Receiver module 12 is used to receive data access request, and this data access request comprises the address of data to be visited; Controller determination module 13 is used for confirming these data to be visited are carried out the controller of data processing according to the address of these data to be visited and the distribution rule of data in a plurality of controllers of this logical volume; Access modules 14 is used for sending this data access request to this controller of confirming that these data to be visited are carried out data processing, so that the controller that should confirm is handled this data access request.
The access means of the data of present embodiment can be carried out the embodiment of method shown in Figure 2, and it realizes that principle is similar, repeats no more here.In addition, the access means of these data can be specially server or computing machine.
In the present embodiment; Through a distribution rule that controller obtains from storage system; Confirm the address of the data to be visited in the data access request that receives is carried out the controller of data processing; And to the controller transmission data access request of confirming, so that should definite controller be handled by this data access request, owing to can get access to the distribution rule of data in a plurality of controllers in the logical volume; Therefore; Can confirm accurately that data to be visited carry out the controller of data processing, cause the problem of carrying out lot of data communication between the controller because can't confirm visit data to be distributed in which controller, and then reduce the traffic load of controller effectively thereby solved in the prior art.
Further; In another embodiment of the present invention; On above-mentioned basis embodiment illustrated in fig. 5, when the distribution rule of the data of logical volume also comprises: during the mapping relations of each controller and controller chassis, this controller determination module 13 also is used for when the controller that should confirm is not in the given time handled this data access request; According to the mapping relations of each controller and controller chassis, select another controller in the affiliated controller chassis of this controller of confirming.
Access modules 14 also is used for sending this data access request to another controller, so that this another controller is handled this data access request.
Fig. 6 is the structural representation of an embodiment of the access system of a kind of data of the present invention, and as shown in Figure 6, this system comprises: the access means 21 and the storage system 22 of data wherein, comprise a plurality of controllers 221 in this storage system 22.The access means 21 of these data can be the access means of data shown in Figure 5, and carries out the technical scheme of above-mentioned method embodiment shown in Figure 2, and it realizes that principle is similar, repeats no more here.
The access system of the data in the embodiment of the invention can be a subscriber's main station, perhaps other devices.
One of ordinary skill in the art will appreciate that: all or part of step that realizes above-mentioned each method embodiment can be accomplished through the relevant hardware of programmed instruction.Aforesaid program can be stored in the computer read/write memory medium.This program the step that comprises above-mentioned each method embodiment when carrying out; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CD.
What should explain at last is: above each embodiment is only in order to explaining technical scheme of the present invention, but not to its restriction; Although the present invention has been carried out detailed explanation with reference to aforementioned each embodiment; Those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, perhaps to wherein part or all technical characteristic are equal to replacement; And these are revised or replacement, do not make the scope of the essence disengaging various embodiments of the present invention technical scheme of relevant art scheme.
Claims (7)
1. the access method of data is characterized in that, said method comprises:
At least one controller in storage system sends distribution rule and obtains request; And receive the distribution rule of data in a plurality of controllers in the said logical volume that said controller returns; Wherein, Said distribution rule comprises the distributed intelligence of data in a plurality of controllers in the said logical volume, and said storage system comprises a plurality of controllers, and the data allocations in logical volume is given said a plurality of controllers;
Receive data access request, said data access request comprises the address of data to be visited;
According to the address and the said distribution rule of said data to be visited, confirm said data to be visited are carried out the controller of data processing;
Send said data access request to said definite controller that said data to be visited are carried out data processing, so that said definite controller is handled said data access request.
2. the access method of data according to claim 1; It is characterized in that; Said distribution rule comprises: the address space of distributed data and the mapping relations of controller; The perhaps Distribution Algorithm of the data in the logical volume and parameter, wherein, said distributed data is the data of DATA DISTRIBUTION on each controller in the logical volume.
3. the access method of data according to claim 1 is characterized in that, said distribution rule also comprises: the mapping relations of each controller and controller chassis;
Said method also comprises:
When said definite controller is not handled said data access request in the given time,, select another controller in the controller chassis under the said definite controller according to the mapping relations of said each controller and controller chassis;
Send said data access request to said another controller, so that said another controller is handled said data access request.
4. the access means of data is characterized in that, comprising:
The distribution rule acquisition module is used at least one controller to storage system and sends distribution rule and obtain request, and receives the distribution rule of data in a plurality of controllers in the said logical volume that said controller returns; Wherein, said distribution rule comprises the distributed intelligence of data in a plurality of controllers in the logical volume, comprises a plurality of controllers in the said storage system, and the data allocations in logical volume is given said a plurality of controllers;
Receiver module is used to receive data access request, and said data access request comprises the address of data to be visited;
The controller determination module is used for address and said distribution rule according to said data to be visited, confirms said data to be visited are carried out the controller of data processing;
Access modules is used for sending said data access request to said definite controller that said data to be visited are carried out data processing, so that said definite controller is handled said data access request.
5. the access means of data according to claim 4; It is characterized in that; Said distribution rule comprises: the address space of distributed data and the mapping relations of controller; The perhaps Distribution Algorithm of the data in the logical volume and parameter, wherein, said distributed data is the data of DATA DISTRIBUTION on each controller in the logical volume.
6. the access means of data according to claim 4 is characterized in that, the distribution rule of the data of said logical volume also comprises: the mapping relations of each controller and controller chassis;
Said controller determination module also is used for when said definite controller is not handled said data access request in the given time; According to the mapping relations of said each controller and controller chassis, select another controller in the controller chassis under the said definite controller;
Said access modules also is used for sending said data access request to said another controller, so that said another controller is handled said data access request.
7. the access system of data is characterized in that, comprising: storage system and like the access means of the described data of the arbitrary claim of claim 4-6, wherein, said storage system comprises a plurality of controllers.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210097538XA CN102650932A (en) | 2012-04-05 | 2012-04-05 | Method, equipment and system for accessing data |
| PCT/CN2013/072161 WO2013149529A1 (en) | 2012-04-05 | 2013-03-05 | Data access method, device and system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210097538XA CN102650932A (en) | 2012-04-05 | 2012-04-05 | Method, equipment and system for accessing data |
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| CN102650932A true CN102650932A (en) | 2012-08-29 |
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| CN201210097538XA Pending CN102650932A (en) | 2012-04-05 | 2012-04-05 | Method, equipment and system for accessing data |
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| CN (1) | CN102650932A (en) |
| WO (1) | WO2013149529A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103152394A (en) * | 2013-02-06 | 2013-06-12 | 华为技术有限公司 | Data access system, internal memory share device and data reading method |
| WO2013149529A1 (en) * | 2012-04-05 | 2013-10-10 | 华为技术有限公司 | Data access method, device and system |
| CN105302481A (en) * | 2015-10-12 | 2016-02-03 | 深圳市安云信息科技有限公司 | Method and apparatus for load balancing of two controllers in cache |
| CN106648851A (en) * | 2016-11-07 | 2017-05-10 | 郑州云海信息技术有限公司 | IO management method and device used in multi-controller storage |
| US11249663B2 (en) | 2018-07-17 | 2022-02-15 | Huawei Technologies Co., Ltd. | I/O request processing method and device |
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| CN1495619A (en) * | 2002-09-18 | 2004-05-12 | ������������ʽ���� | Storage system and its control method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4224077B2 (en) * | 2006-04-04 | 2009-02-12 | 株式会社東芝 | Storage system |
| CN102650932A (en) * | 2012-04-05 | 2012-08-29 | 华为技术有限公司 | Method, equipment and system for accessing data |
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- 2012-04-05 CN CN201210097538XA patent/CN102650932A/en active Pending
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- 2013-03-05 WO PCT/CN2013/072161 patent/WO2013149529A1/en active Application Filing
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1495619A (en) * | 2002-09-18 | 2004-05-12 | ������������ʽ���� | Storage system and its control method |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013149529A1 (en) * | 2012-04-05 | 2013-10-10 | 华为技术有限公司 | Data access method, device and system |
| CN103152394A (en) * | 2013-02-06 | 2013-06-12 | 华为技术有限公司 | Data access system, internal memory share device and data reading method |
| CN103152394B (en) * | 2013-02-06 | 2016-09-28 | 华为技术有限公司 | Data access arrangement, internal memory share equipment and method for reading data |
| US9594682B2 (en) | 2013-02-06 | 2017-03-14 | Huawei Technologies Co., Ltd. | Data access system, memory sharing device, and data reading method |
| CN105302481A (en) * | 2015-10-12 | 2016-02-03 | 深圳市安云信息科技有限公司 | Method and apparatus for load balancing of two controllers in cache |
| CN105302481B (en) * | 2015-10-12 | 2019-04-12 | 深圳市安云信息科技有限公司 | A kind of method and apparatus of the load balancing of dual controller in the caches |
| CN106648851A (en) * | 2016-11-07 | 2017-05-10 | 郑州云海信息技术有限公司 | IO management method and device used in multi-controller storage |
| US11249663B2 (en) | 2018-07-17 | 2022-02-15 | Huawei Technologies Co., Ltd. | I/O request processing method and device |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2013149529A1 (en) | 2013-10-10 |
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Application publication date: 20120829 |