CN102307206A - Caching system and caching method for rapidly accessing virtual machine images based on cloud storage - Google Patents
Caching system and caching method for rapidly accessing virtual machine images based on cloud storage Download PDFInfo
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Abstract
The invention relates to the technical field of cloud computing, in particular to a caching system and a caching method for rapidly accessing virtual machine images based on cloud storage. The system comprises a service processing module, a node cache management module, a cloud storage service processing module and a front-end cache management module, wherein the service processing module is configured on a computing node, receives and processes requests and determines whether to execute and distribute the requests; the node cache management module is configured on the computing node, stores new image files in a local node for caching, and searches for the virtual machine images cached in the local node; the cloud storage service processing module is configured on a management node, acquires image file blocks from a cloud storage system, and performs operations on the file blocks; and the front-end cache management module is configured on the management node, manages cached files on a front-end management node, searches for the virtual machine images from a local cache and stores the virtual machine image files into the local cache. By the system and the method, virtual machine creation time can be fully shortened, repeated data transmission among nodes can be avoided and the utilization rate of a network bandwidth can be increased; and the system and the method can be widely applied to virtual machine image caching.
Description
Technical field
The present invention relates to the cloud computing technical field, refer in particular to a kind of caching system and method thereof of the fast access virtual machine image based on cloud storage.
Background technology
Cloud computing is the development of distributed treatment (Distributed Computing), parallel processing (Parallel Computing) and grid computing (Grid Computing); Its basic principle is in network, to move same task simultaneously through a large amount of computers, and every computer just is called a node.And these nodes are not the computer that hardware composing such as traditional dependence CPU, mainboard, memory bar are got up; But on the traditional calculating machine through the virtual computer that comes out of Intel Virtualization Technology; It is exactly with the unit of virtual machine as distributes calculation resources that these virtual computers that come out just are virtual machine, the core of cloud computing.
The cloud storage is in cloud computing (cloud computing) conceptive extension and develops a new notion of coming out; Be meant through functions such as cluster application, grid or distributed file systems; A large amount of various dissimilar memory devices in the network are gathered collaborative work through application software, a system of storage and Operational Visit function externally is provided jointly.
This shows that cloud computing and cloud storage system are related mutually, compare that the cloud storage can think to have disposed a cloud computing system in big capacity storage space with cloud computing system.How can be the topic of a very worth discussion altogether effectively with cloud computing and cloud storage node.Yet on cloud storage basis, provide the fast access of virtual machine image but also not see good realization.
Summary of the invention
The present invention's one of technical problem of dealing with problems is to provide a kind of caching system of the fast access virtual machine image based on the cloud storage; This system utilizes the powerful storage capacity of cloud storage system; The storage of virtual machine image is provided, realizes fast access on this basis the virtual machine image buffer memory.
The present invention's two of technical problem of dealing with problems is to provide a kind of method of the fast access virtual machine image based on the cloud storage.
The technical scheme that the present invention one of solves the problems of the technologies described above is: include service processing module, nodal cache administration module, cloud stores service processing module and cloud stores service processing module;
Described service processing module is deployed on the computing node, is used for receiving request, handles request, determines whether carry out request and dispense request;
Described nodal cache administration module is deployed on the computing node, is used for new image file is saved in the local node buffer memory, searches on the local node virtual machine image of buffer memory;
Described cloud stores service processing module is deployed on the management node, is used for obtaining the image file piece from cloud storage system, and these blocks of files are operated, and makes it be reduced to an available image file;
Described front end caching management module is deployed on the management node, and the cache file on the management front end management node is searched virtual machine image in local cache, virtual machine image file is saved in local cache.
Two the technical scheme that the present invention solves the problems of the technologies described above is: may further comprise the steps:
In the 1st step, the service processing module of computing node receives the Web service request of creating virtual machine;
In the 2nd step, the service processing module on the computing node judges whether local node has enough resources to carry out this request;
If can, carried out for the 3rd step; If service processing module on the computing node can be distributed to other computing nodes with this Web service request not;
In the 3rd step, the nodal cache administration module on the computing node is searched the virtual machine image file of coupling according to the Web service request;
If exist, the nodal cache administration module returns to service processing module with the buffered results of coupling, and service processing module is handled and should be asked; If do not exist, the image file information during service processing module will be asked sends on the management node, carries out for the 4th step;
In the 4th step, after management node received Web Service request, the front end caching management module was searched be complementary data cached;
If exist, front end node returns to the service processing module on the computing node with buffered results, and the service processing module on the computing node is with this result of buffer memory simultaneously;
If do not exist, carried out for the 5th step;
In the 5th step, the cloud stores service processing module on the management node is gone to and is searched the virtual machine image file piece in the cloud storage system according to the description of virtual machine image file;
If exist, carried out for the 6th step; If do not exist, Query Result is returned to the computing node of this request of transmission;
In the 6th step, the cloud stores service processing module on the management node is deciphered the virtual machine image file piece, and will be reduced into complete virtual machine mirror image after the blocks of files merging;
In the 7th step, the front end caching management module on the management node is put into buffer memory with new virtual machine image.
Said Web service request comprises services request classification, parameter and result.
In said the 2nd step, if local computing node does not have enough resources to carry out this Web service request, the service processing module on the local computing node should ask classification and parameter to send to other computing nodes with the Web service form.
Said the 4th step, if the front end buffer process module on the management node has been found the virtual machine image file that is complementary in caching system, computing node also can this virtual machine image of buffer memory when carrying out the Web service request in local cache.
Said the 5th step does not meet the record that virtual machine image is described if do not exist in the cloud storage system, and computing node can mistake occur by prompt system.
In said the 7th step, data cached metamessage is to be stored in the embedded database on the management node.
Adopt system and method for the present invention fully to shorten the virtual machine creating time, avoid the transfer of data that repeats between each node, strengthen network bandwidth utilance; Improve the speed of service.
Description of drawings
Below in conjunction with accompanying drawing the present invention is further specified:
Fig. 1 is the caching system sketch map that the present invention is based on the fast access virtual machine image of cloud storage;
Fig. 2 is the sketch map of caching system implementation step that the present invention is based on the fast access virtual machine image of cloud storage.
Embodiment
See shown in Figure 1ly, the present invention includes service processing module 1, nodal cache administration module 2, cloud stores service processing module 3 and cloud stores service processing module 4; Service processing module 1 is deployed on the computing node, is used for receiving request, handles request, determines whether carry out request and dispense request.Nodal cache administration module 2 is deployed on the computing node, is used for new image file is saved in the local node buffer memory, searches on the local node virtual machine image of buffer memory.Cloud stores service processing module 3 is deployed on the management node, is used for obtaining the image file piece from cloud storage system, and these blocks of files are operated, and makes it be reduced to an available image file.Front end caching management module 4 is deployed on the management node, and the cache file on the management front end management node is searched virtual machine image in local cache, virtual machine image file is saved in local cache.
See shown in Figure 2ly, the present invention is based on the caching system of the fast access virtual machine image of cloud storage, its caching method may further comprise the steps:
In the 1st step, the service processing module 1 of computing node receives the Web service request of creating virtual machine;
In the 2nd step, the service processing module 1 on the computing node judges whether local node has enough resources to carry out this request;
If can, carried out for the 3rd step; If, the service processing module on the computing node 1 can not be distributed to other computing nodes with this Web service request;
In the 3rd step, the nodal cache administration module 2 on the computing node is searched the virtual machine image file of coupling according to the Web service request;
If exist, nodal cache administration module 2 returns to service processing module 1 with the buffered results of coupling, and service processing module 1 is handled and should be asked; If do not exist, the image file information during service processing module 1 will be asked sends on the management node, carries out for the 4th step;
In the 4th step, after management node received Web Service request, front end caching management module 4 was searched be complementary data cached;
If exist, front end node returns to the service processing module 1 on the computing node with buffered results, and the service processing module 1 on the computing node is with this result of buffer memory simultaneously;
If do not exist, carried out for the 5th step;
In the 5th step, the cloud stores service processing module 3 on the management node is gone to and is searched the virtual machine image file piece in the cloud storage system according to the description of virtual machine image file;
If exist, carried out for the 6th step; If do not exist, Query Result is returned to the computing node of this request of transmission;
In the 6th step, the 3 pairs of virtual machine image file pieces of cloud stores service processing module on the management node are deciphered, and will be reduced into complete virtual machine mirror image after the blocks of files merging;
In the 7th step, the front end caching management module 4 on the management node is put into buffer memory with new virtual machine image.
In aforementioned method steps, the Web service request comprises services request classification, parameter and result.In the 2nd step, if local computing node does not have enough resources to carry out this Web service request, the service processing module 1 on the local computing node should ask classification and parameter to send to other computing nodes with the Web service form.The 4th step, if the front end buffer process module 4 on the management node has been found the virtual machine image file that is complementary in caching system, computing node also can this virtual machine image of buffer memory when carrying out the Web service request in local cache.The 5th step did not meet the record that virtual machine image is described if do not exist in the cloud storage system, and computing node can mistake occur by prompt system.In the 7th step, data cached metamessage is to be stored in the embedded database on the management node.
Claims (12)
1. based on the caching system of the fast access virtual machine image of cloud storage, it is characterized in that: include service processing module (1), nodal cache administration module (2), cloud stores service processing module (3) and cloud stores service processing module (4);
Described service processing module (1) is deployed on the computing node, is used for receiving request, handles request, determines whether carry out request and dispense request;
Described nodal cache administration module (2) is deployed on the computing node, is used for new image file is saved in the local node buffer memory, searches on the local node virtual machine image of buffer memory;
Described cloud stores service processing module (3) is deployed on the management node, is used for obtaining the image file piece from cloud storage system, and these blocks of files are operated, and makes it be reduced to an available image file;
Described front end caching management module (4) is deployed on the management node, and the cache file on the management front end management node is searched virtual machine image in local cache, virtual machine image file is saved in local cache.
2. the caching method of the described caching system of claim 1 is characterized in that: may further comprise the steps:
In the 1st step, the service processing module of computing node (1) receives the Web service request of creating virtual machine;
In the 2nd step, the service processing module on the computing node (1) judges whether local node has enough resources to carry out this request;
If can, carried out for the 3rd step; If, the service processing module on the computing node (1) can not be distributed to other computing nodes with this Web service request;
In the 3rd step, the nodal cache administration module (2) on the computing node is searched the virtual machine image file of coupling according to the Web service request;
If exist, nodal cache administration module (2) returns to service processing module (1) with the buffered results of coupling, and service processing module (1) is handled and should be asked; If do not exist, the image file information during service processing module (1) will be asked sends on the management node, carries out for the 4th step;
In the 4th step, after management node received Web Service request, front end caching management module (4) was searched be complementary data cached;
If exist, front end node returns to the service processing module (1) on the computing node with buffered results, and the service processing module (1) on the computing node is with this result of buffer memory simultaneously;
If do not exist, carried out for the 5th step;
In the 5th step, the cloud stores service processing module (3) on the management node is gone to and is searched the virtual machine image file piece in the cloud storage system according to the description of virtual machine image file;
If exist, carried out for the 6th step; If do not exist, Query Result is returned to the computing node of this request of transmission;
In the 6th step, the cloud stores service processing module (3) on the management node is deciphered the virtual machine image file piece, and will be reduced into complete virtual machine mirror image after the blocks of files merging;
In the 7th step, the front end caching management module (4) on the management node is put into buffer memory with new virtual machine image.
3. caching method according to claim 2 is characterized in that: said Web service request comprises services request classification, parameter and result.
4. caching method according to claim 2; It is characterized in that: said the 2nd step; If local computing node does not have enough resources to carry out this Web service request, the service processing module on the local computing node (1) should ask classification and parameter to send to other computing nodes with the Web service form.
5. caching method according to claim 3; It is characterized in that: said the 2nd step; If local computing node does not have enough resources to carry out this Web service request, the service processing module on the local computing node (1) should ask classification and parameter to send to other computing nodes with the Web service form.
6. according to claim 2,3,4 or 5 described caching methods; It is characterized in that: said the 4th step; If the front end buffer process module (4) on the management node has been found the virtual machine image file that is complementary in caching system, computing node also can this virtual machine image of buffer memory when carrying out the Web service request in local cache.
7. according to claim 2,3,4 or 5 described caching methods, it is characterized in that: said the 5th step, do not meet the record that virtual machine image is described if do not exist in the cloud storage system, computing node can mistake occur by prompt system.
8. caching method according to claim 6 is characterized in that: said the 5th step, do not meet the record that virtual machine image is described if do not exist in the cloud storage system, and computing node can mistake occur by prompt system.
9. according to claim 2,3,4 or 5 described caching methods, it is characterized in that: in said the 7th step, data cached metamessage is to be stored in the embedded database on the management node.
10. caching method according to claim 6 is characterized in that: in said the 7th step, data cached metamessage is to be stored in the embedded database on the management node.
11. caching method according to claim 7 is characterized in that: in said the 7th step, data cached metamessage is to be stored in the embedded database on the management node.
12. caching method according to claim 8 is characterized in that: in said the 7th step, data cached metamessage is to be stored in the embedded database on the management node.
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| CN115794319A (en) * | 2023-02-07 | 2023-03-14 | 天翼云科技有限公司 | Edge computing storage service providing method, device, electronic equipment and medium |
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