CN102045399A - Cloud computing mode file system and file reading method - Google Patents
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Abstract
The invention provides a cloud computing mode file system and a file reading method, wherein the system comprises a first client module, a file management module, a distributed management module and a distributed transmission module; the first client module is used for sending out a file reading request; the file management module is used for sending out an index acquisition request according to the file reading request which is sent out by the first client module; the distributed management module is used for acquiring index information of a required file and an IP (internet protocol) address of a server at which the file is located according to the index acquisition request which is sent out by the file management module; and the distributed transmission module is used for reading the file from the corresponding server according to the index information and the IP address which are acquired by the distributed management module, and sending the file to the first client module via the file management module. According to the invention, the IP-based file reading way can be realized, and the system is applicable to IP distributed structures and has an open and unified standard interface, so that the expansibility is powerful.
Description
Technical field
The present invention relates to a kind of cloud computing schema file system and file read method, belong to the cloud computing technical field.
Background technology
The cloud computing pattern is a kind ofly to be integrated into a pattern with powerful calculating ability by the network computational entity that a plurality of costs are relatively low, and one of them part and parcel is a file system.Existing unit file system is mainly based on the bare machine device build; And existing storage area network network (Storage AreaNetwork, be called for short: SAN) (Redundant Array of Independent Disk, be called for short: RAID) mode makes up the mode file system based on the raid-array of each manufacturer.
There are the following problems at least in the prior art: existing cloud computing schema file system does not have unified standard interface, can only use expensive memory device and high performance calculation server, a little less than therefore open difference and the adaptability.
Summary of the invention
The invention provides a kind of cloud computing schema file system and file read method, in order to improve the scalability of file system.
One aspect of the present invention provides a kind of cloud computing schema file system, comprising:
First client modules is used to send file and reads request;
Document management module is used for according to the described file that first client modules sends the request of reading and sends index and obtain request;
The distributed management module is used for obtaining according to the described index that document management module sends the IP address of index information and this document place server of the required file of acquisition request;
The distributed transmission module, described file is read from corresponding server in the described index information and the described IP address that are used for obtaining according to the distributed management module, sends to described first client modules through described document management module.
The present invention provides a kind of file read method on the other hand, comprising:
Reception is read request by the file that first client modules sends;
Read the IP address of index information and this document place server of the required file of acquisition request according to described file;
Read described file according to described index information and described IP address from corresponding server;
The described file that reads is sent to described first client modules.
The present invention has realized that IP-based file reads mode, be applicable to the IP distributed architecture, has open unified standard interface, scalability is powerful, only need to expand cheap PC server, just but extension storage performance and computing capability make the user needn't adopt expensive storage and high performance calculation server just can build the cloud computing platform of oneself, develop the cloud computing of oneself and use.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do one to the accompanying drawing of required use in embodiment or the description of the Prior Art below introduces simply, apparently, accompanying drawing in describing below is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the flow chart of file read method embodiment one of the present invention;
Fig. 2 is the flow chart of file read method embodiment two of the present invention;
Fig. 3 is the structural representation of cloud computing schema file system embodiment of the present invention;
Fig. 4 is the function call command transfer process schematic diagram of system shown in Figure 3.
Embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the invention clearer, below in conjunction with the accompanying drawing in the embodiment of the invention, technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
Fig. 1 is the flow chart of file read method embodiment of the present invention, as shown in the figure, comprises the steps:
Step 110 receives the file that is sent by first client modules and reads request.
Wherein, this document request of reading is sent by operating first client modules by first user, reads required file in order to request.
Step 120, the IP address of reading index information and this document place server of the required file of acquisition request according to described file.
Particularly, can read request generation index according to described file earlier and obtain request, corresponding resource distribution configuration information is searched in the request of obtaining according to this index; And then the IP address that obtains index information and this document place server of required file according to the described resource distribution configuration information that finds.
Wherein, write down the local physical storage locations of described file in server in the index information.The mode that index information separates with file is a file management mode main in the prior art.The described method of present embodiment is continued to use this mode, so that adapt with the local file system of existing server.
Particularly, can be earlier described index information be carried out protocol adaptation, obtain the index information after adaptive according to the local file system form of described server; And then read described file from corresponding server according to described index information and described IP address after adaptive.Thereby make the described index information can be suitable with the local file system of server with described IP address.
Particularly, can carry out protocol adaptation, obtain the file after adaptive the described file that reads; And then described file after adaptive sent to described first client modules.Thereby make the described file can be suitable with first client modules.Particularly, can be compound index file (CFS) form with the described file conversion of reading when carrying out described protocol adaptation, so that first client modules can be handled this CFS formatted file after adaptive.
The described method of present embodiment has realized that IP-based file reads mode, be applicable to the IP distributed architecture, has open unified standard interface, scalability is powerful, only need to expand cheap PC server, just but extension storage performance and computing capability make the user needn't adopt expensive storage and high performance calculation server just can build the cloud computing platform of oneself, develop the cloud computing of oneself and use.
Fig. 2 is the flow chart of file read method embodiment two of the present invention, as shown in the figure, the described method of present embodiment also comprises the steps: after corresponding server reads described file according to described index information and described IP address in that above-mentioned steps 130 is described
Step 210 generates corresponding file seed according to the described file that reads.
Wherein, described file kind subrecord the information that once read by which client modules of this document and the index information of this document.
Step 220, read when request when receiving another file that sends from second client modules, whether inquiry once transmitted the file that the request of reading of described another file will be read to described first client modules, and Query Result is sent to described second client modules.
Wherein, the request of reading of described another file is sent by operating second client modules by second user, reads required file in order to request.
Step 230, when described Query Result when being, described second client modules obtains corresponding file seed.
Wherein, if described Query Result is for being to show that then the required file of described second client modules is identical with the file that described first client modules once read.
Step 240, second client modules obtains and the corresponding file of described file seed from described first client modules in point-to-point mode according to described file seed.
In addition, if described Query Result is for denying, that is to say that described first client modules did not read described file, then this second client can adopt embodiment one described method to read required file, perhaps also can transmit described file in point-to-point mode from other client modules.
The described method of present embodiment has realized between the client modules that with point-to-point mode transfer files, the time of having saved file transfer has also alleviated the work load of file system.
Fig. 3 is the structural representation of cloud computing schema file system embodiment of the present invention, as shown in the figure, this system comprises at least: first client modules 11, document management module 12, distributed management module 13 and distributed transmission module 14, wherein, document management module 12, distributed management module 13 and distributed transmission module 14 are arranged in the main control unit of server.
Need to prove: described client modules of present embodiment and server are actually the same a kind of equipment with identical inner modular structure herein, and only this equipment has been played the part of different roles when carrying out different operations.For example, when this device request read file, it was as client modules; And when this equipment provided the file of being asked, it was as server.
The operation principle of the described system of present embodiment below is described:
Wherein, storage available in the current cloud and computational resource are searched in described distributed management module 13 main responsible scheduling, and create and management cloud buffer memory, preserve the index of cloud resource.Described document management module 12 mainly is responsible for finishing file operation and management, comprising: create, delete, search, name, read, write, operation such as opening and closing.Described distributed transmission module 14 mainly is responsible for finishing the transmission of distributed document between client modules and server.
Particularly, this system can further include: Configuration Manager 15 and core algorithm module 16.After above-mentioned document management module 12 sends index and obtains request, can search corresponding resource distribution configuration information by Configuration Manager 15 earlier; And then obtain the index information of required file and the IP address of this document place server sends to described distributed management module 13 by the resource distribution configuration information that core algorithm module 16 finds according to Configuration Manager 15.
Wherein, the function of described core algorithm module 16 can comprise: file addressing algorithm, cloud resource scheduling algorithm, file transfer control algolithm, point-to-point kind of subpath addressing algorithm, file encryption algorithm and file transfer compression and decompression algorithm etc.Described Configuration Manager 15 be responsible for finishing loading, heavy duty, the Cloud Server of cloud resource allocation startup, stop, and being responsible for and distributed management module 13 communicates, to finish the variation of resource allocation.
Particularly, this system can further include: protocol adaptation module 17, and the described index information that distributed management module 13 is obtained according to the local file system form of described server carries out protocol adaptation, obtains the index information after adaptive; Then by described distributed transmission module 14 according to protocol adaptation module 17 obtain described adaptive after index information and described IP address read described file from corresponding server.And described protocol adaptation module 17 can also be carried out protocol adaptation to the described file that distributed transmission module 14 reads, and obtains the file after adaptive, particularly, can be the CFS form with the described file conversion of reading when carrying out described protocol adaptation; Through described document management module 12 described file after adaptive is sent to described first client modules 11 by described distributed transmission module 14 then.Wherein, these protocol adaptation module 17 main adaptive bottom host-host protocol and local file systems be responsible for.
The described system of present embodiment also can be called cloud file system (Cloud File Systems, be called for short: CFS), this system is based on the IP agreement, be applicable to the IP distributed architecture, have open unified standard interface, scalability is powerful, only need to expand cheap PC server, just but extension storage performance and computing capability make the user needn't adopt expensive storage and high performance calculation server just can build the cloud computing platform of oneself, develop the cloud computing of oneself and use.
In addition, as shown in Figure 3, can further include in the described system: the point-to-point transmission module 18 and second client modules 19, wherein, point-to-point transmission module 18 can be finished the point-to-point transmission between client modules, produce seed watch-dog (tracker), be used for knowing the file name of transmitting offering the inventory that other download the opposite equip. of same file then in point-to-point (Peer to Peer) transmission.The operation principle of this system is as follows:
Described distributed transmission module 14 can also further generate corresponding file seed according to the described file that reads and be kept in the described point-to-point transmission module 18 after file reads carrying out; When second user sends another file and reads when request by operating second client modules 19, described document management module 12 reads the described distributed transmission module 14 of request inquiry according to described another file and whether once transmitted the file that the request of reading of described another file will be read to described first client modules 11, and Query Result is sent to described second client modules 19; When described Query Result when being, 19 of described second client modules obtain corresponding file seed from described point-to-point transmission module 18, and according to this document seed with point-to-point mode from corresponding first client modules 11 obtain this first client modules 11 preserve with the corresponding file of described file seed.Particularly, second client modules 19 can call point-to-point kind of subpath addressing algorithm in the core algorithm module 16 by point-to-point transmission module 18, to realize the point-to-point file transfer between second client modules 19 and first client modules 11.
Wherein, described first client modules 11 and second client modules 19 can provide interface for the CFS system operation that the user carries out, and create and the management local cache, and are responsible for point-to-point transmitting and scheduling.
Need to prove herein, the call relation between the dotted arrow representation module shown in Fig. 3, for example: calling interface calls point-to-point transport module 18, document management module 12 and distributed transmission module 14; Distributed management module 13 is called Configuration Manager 15, core algorithm module 16 and protocol adaptation module 17; Distributed transmission module 14 invocation protocol adaptation module 17; Point-to-point transmission module 18 is called core algorithm module 16, and invoked module realizes aforesaid function corresponding by carrying out the function call order.Fig. 4 is the function call command transfer process schematic diagram of system shown in Figure 3, as shown in the figure, comprises as minor function command calls process:
1. user A calls the order of read () function at client modules A and carries out file and read;
2. order cushions document management module to read () function, after this order pushes on, calls readIndex () the function order of distributed management module;
3. the distributed management module is at this moment by calling the buffering area (Buffer) that Configuration Manager is read in the order of readConfig () function;
4. Configuration Manager calls the core algorithm module by calling the order of getQuickDataIndex () function according to index informations such as name spaces, and the core algorithm module is returned the index information that need read file and the IP address of place server;
5. after the distributed management module obtains file index, by readLocalFileIndex () function command calls protocol adaptation module;
6. the protocol adaptation module finds the server at file place according to the IP address, and obtains the local file formatted data by calling the order of getAdpterFileHandler () function to server;
7. server obtains the local file formatted data by calling the order of getLocalHandler () function from local file system;
8. server returns to the protocol adaptation module by calling the order of getMatchToHandler () function with the local file formatted data, according to the local file system form that writes down in this local file formatted data described index information is carried out adaptively by the protocol adaptation module, and the index information after adaptive returned to document management module through the distributed management module;
9. after document management module obtains index information after adaptive, call the order of readData (Index) function, to obtain document entity;
10. distributed transmission module invokes readLocalFileData () function order is to obtain document entity;
11. the protocol adaptation module is obtained corresponding document entity from the local file system of server and is returned to the distributed transmission module by calling the order of getAdpaterFileData () function, and through the file administration module document entity is transferred to client modules A, thereby finish reading to file by the distributed transmission module.
12. user B calls the order of read () function at client modules B, carries out file to the document management module request and reads;
13. document management module is known the seed that whether has this file by calling the order of haveLiveIndex () function from the distributed transmission module, if exist, returns to client modules B kind subindex;
14. client modules B point-to-pointly transmits the file that will read from corresponding client modules by the order of getLiveIndex () function after the point-to-point transmission module obtains the file seed, for example, in Fig. 4, if this document seed shows corresponding file and is kept among the client modules A that then client modules B transmits the file that will read from client modules A point-to-pointly; If this document seed shows corresponding file and is kept among the client modules C that then client modules B transmits the file that will read from client modules C point-to-pointly.
The described system of present embodiment has realized further also between the client modules that with point-to-point mode transfer files, the time of having saved file transfer has also alleviated the work load of file system.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can be finished by the relevant hardware of program command, aforesaid program can be stored in the computer read/write memory medium, this program is carried out the step that comprises said 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.
It should be noted that at last: above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment the present invention is had been described in detail, 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, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (11)
1. a cloud computing schema file system is characterized in that, comprising:
First client modules is used to send file and reads request;
Document management module is used for according to the described file that first client modules sends the request of reading and sends index and obtain request;
The distributed management module is used for obtaining according to the described index that document management module sends the IP address of index information and this document place server of the required file of acquisition request;
The distributed transmission module, described file is read from corresponding server in the described index information and the described IP address that are used for obtaining according to the distributed management module, sends to described first client modules through described document management module.
2. system according to claim 1 is characterized in that, also comprises:
Configuration Manager is used for according to the described index that document management module sends the request of obtaining and searches corresponding resource distribution configuration information;
Core algorithm module, the resource distribution configuration information that is used for finding according to Configuration Manager are obtained the index information of required file and the IP address of this document place server sends to described distributed management module.
3. system according to claim 1 is characterized in that, also comprises:
The protocol adaptation module, the described index information that the distributed management module is obtained according to the local file system form of described server carries out protocol adaptation, obtains the index information after adaptive;
Described distributed transmission module also be used for according to the protocol adaptation module obtain described adaptive after index information and described IP address read described file from corresponding server.
4. system according to claim 3 is characterized in that:
Described protocol adaptation module also is used for the described file that the distributed transmission module reads is carried out protocol adaptation, obtains the file after adaptive;
Described distributed transmission module sends to described first client modules through described document management module with described file after adaptive.
5. system according to claim 1 is characterized in that, also comprises: the point-to-point transmission module; Described distributed transmission module also is used for generating corresponding file seed according to the described file that reads and is kept at described point-to-point transmission module.
6. system according to claim 5 is characterized in that, also comprises:
Second client modules is used to send another file and reads request;
Described document management module also is used to inquire about described distributed transmission module and whether once transmitted the file that the request of reading of described another file will be read to described first client modules, and Query Result is sent to described second client modules;
When described Query Result when being, described second client modules also is used for obtaining corresponding file seed from described point-to-point transmission module, and according to this document seed with point-to-point mode from corresponding first client modules obtain preserve this first client modules with the corresponding file of described file seed.
7. a file read method is characterized in that, comprising:
Reception is read request by the file that first client modules sends;
Read the IP address of index information and this document place server of the required file of acquisition request according to described file;
Read described file according to described index information and described IP address from corresponding server;
The described file that reads is sent to described first client modules.
8. method according to claim 7 is characterized in that, reads the index information of the required file of acquisition request and the IP address of this document place server comprises according to described file:
The request of reading generates index and obtains request according to described file;
Corresponding resource distribution configuration information is searched in the request of obtaining according to described index;
Obtain the IP address of index information and this document place server of required file according to the described resource distribution configuration information that finds.
9. method according to claim 7 is characterized in that, reads described file according to described index information and described IP address from corresponding server and comprises:
Local file system form according to described server carries out protocol adaptation to described index information, obtains the index information after adaptive;
Read described file according to described index information and described IP address after adaptive from corresponding server.
10. method according to claim 7 is characterized in that, the described file that reads is sent to described first client modules comprise:
The described file that reads is carried out protocol adaptation, obtain the file after adaptive;
Described file after adaptive is sent to described first client modules.
11. method according to claim 7 is characterized in that, also comprises after corresponding server reads described file according to described index information and described IP address:
Generate corresponding file seed according to the described file that reads;
Read when request when receiving another file that sends from second client modules, whether inquiry once transmitted the file that the request of reading of described another file will be read to described first client modules, and Query Result is sent to described second client modules;
When described Query Result when being, described second client modules obtains corresponding file seed;
Described second client modules obtains and the corresponding file of described file seed from described first client modules in point-to-point mode according to described file seed.
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