CN103543958A - Method and device for copying incremental data - Google Patents
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- CN103543958A CN103543958A CN201310466068.4A CN201310466068A CN103543958A CN 103543958 A CN103543958 A CN 103543958A CN 201310466068 A CN201310466068 A CN 201310466068A CN 103543958 A CN103543958 A CN 103543958A
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Abstract
The invention discloses a method and device for copying incremental data, and belongs to the field of internet communication. The method includes the steps that write data requests are received; data to be written in and period identification of a current period are bound, and the data to be written in are stored in a first storage medium according to offset addresses of the data to be written in; data received in the current period are acquired according to the period identification of the current period; the data received in the current period are stored in a second storage medium, wherein the write data requests carry the data to be written in and the offset addresses of the data to be written in. The device comprises a receiving module, a binding module, a first storage module, an acquisition module and a second storage module. According to the method and device for copying the incremental data, the data to be written in and the period identification of the current period are bound by a server; when the data are copied, the data received in the current period are acquired according to the period identification, the received data are stored in the second storage medium, and the copying process is simple.
Description
Technical field
The present invention relates to field of Internet communication, particularly a kind of method and apparatus of incremental data copy.
Background technology
In recent years, along with the development of Internet communication technology, the data volume of generation is with incredible speed rapid growth, if loss of data will produce serious consequence, therefore, how to realize that data back ups is the emphasis of industry concern.
At present, data are backed up to the method for most employing incremental data copy, wherein, incremental data refers to the data of new storage in Preset Time; Incremental data copy refers to incremental data is copied in another storage medium from a storage medium.
Prior art provides the method for a kind of incremental data copy, can be: server receives request of data to be written, and this request of data to be written comprises the offset address of data to be written and data to be written; Server is stored in data to be written in the first storage medium according to the offset address of data to be written.The incremental data generating snapshot that server is stored in to the Preset Time in the first storage medium every Preset Time, this snapshot comprises the corresponding relation of memory address and incremental data sign.Server reads incremental data according to the corresponding relation of the memory address of storing in snapshot and Data Identification from the first storage medium, and this incremental data is write in the second storage medium.Wherein, incremental data is being write in the process of the second storage medium, when if server receives new request of data to be written, server reads the incremental data in the first storage medium, and this incremental data is stored in to new storage medium, preserve the corresponding relation of memory address and the incremental data sign of new storage medium.Server reads incremental data according to the corresponding relation of the memory address of storing in snapshot and Data Identification and the new memory address of storage medium and the corresponding relation of incremental data sign from new storage medium, and the incremental data reading is write in the second storage medium.
In realizing process of the present invention, inventor finds that prior art at least exists following problem:
When copying, incremental data needs generating snapshot, troublesome poeration; And, in incremental data copy procedure, if when server receives new request of data to be written, server reads the incremental data in the first storage medium, and this incremental data is write to new storage medium, and from new storage medium, reading this incremental data, copy procedure is complicated.
Summary of the invention
In order to make to solve the problem of prior art, the invention provides a kind of method and apparatus of incremental data copy.Described technical scheme is as follows:
First aspect, the invention provides a kind of method that incremental data copies, and described method comprises:
Receive write data requests, the offset address of data to be written and described data to be written is carried in write data request;
Bind the cycle sign of described data to be written and current period, and according to the offset address of described data to be written, described data to be written are stored in the first storage medium;
According to the cycle sign of described current period, obtain the data that receive in described current period;
The data that receive in described current period are stored in the second storage medium.
In conjunction with first aspect, in the possible implementation of the first of first aspect, the cycle of the described data to be written of described binding and current period sign, comprising:
Obtain the cycle sign of current period, in buffer memory, store the corresponding relation of the cycle sign of described data to be written and current period;
Or the cycle of obtaining current period identifies, preserve the corresponding relation of the Data Identification of described data to be written and the cycle of current period sign.
In conjunction with first aspect, in the possible implementation of the second of first aspect, the described sign of the cycle according to described current period, obtains the data that receive in described current period, comprising:
According to the cycle sign of described current period, from buffer memory, in the corresponding relation of the data of buffer memory and cycle sign, obtain the data that receive in described current period;
Or, according to the cycle sign of described current period, from the corresponding relation of the Data Identification stored and cycle sign, obtain the Data Identification of the data that receive in described current period, according to the Data Identification of the data that receive, from the first storage medium, obtain the data that receive in described current period in described current period.
In conjunction with first aspect, in the third possible implementation of first aspect, described the data that receive in described current period are stored in the second storage medium, comprising:
Obtain the offset address of the data that receive in described current period;
According to the offset address of the data that receive in described current period, the data that receive in described current period are stored in described the second storage medium.
In conjunction with first aspect, in the 4th kind of possible implementation of first aspect, described the data that receive in described current period are stored in the second storage medium after, described method also comprises:
Prompt terminal, successfully writes the data that receive in described current period in described the second storage medium.
Second aspect, the invention provides the device that a kind of incremental data copies, and described device comprises:
Receiver module, for receiving write data requests, the offset address of data to be written and described data to be written is carried in write data request;
Binding module, for binding the cycle sign of described data to be written and current period;
The first memory module, for according to the offset address of described data to be written, is stored in described data to be written in the first storage medium;
Acquisition module, for according to the cycle sign of described current period, obtains the data that receive in described current period;
The second memory module, for being stored in the second storage medium by the data that receive in described current period.
In conjunction with second aspect, in the possible implementation of the first of second aspect, described binding module, comprising:
The first acquiring unit, for obtaining the cycle sign of current period;
The first storage unit, for storing the corresponding relation of the cycle sign of described data to be written and current period at buffer memory;
Or second acquisition unit, for obtaining the cycle sign of current period;
Storage unit, for preserving the corresponding relation of the Data Identification of described data to be written and the cycle of current period sign.
In conjunction with second aspect, in the possible implementation of the second of first aspect, described acquisition module for according to the cycle sign of described current period, obtains the data that receive in described current period in the corresponding relation of the data of buffer memory and cycle sign from buffer memory;
Or, described acquisition module, for root, according to the cycle of described current period, identify, from the corresponding relation of the Data Identification stored and cycle sign, obtain the Data Identification of the data that receive in described current period, according to the Data Identification of the data that receive, from the first storage medium, obtain the data that receive in described current period in described current period.
In conjunction with second aspect, in the third possible implementation of second aspect, described the second memory module, comprising:
The 3rd acquiring unit, for obtaining the offset address of the data that receive in described current period;
The second storage unit, for according to the offset address of the data that receive in described current period, is stored in the data that receive in described current period in described the second storage medium.
In conjunction with second aspect, in the 4th kind of possible implementation of second aspect, described device also comprises:
Reminding module, for prompt terminal, successfully writes the data that receive in described current period in described the second storage medium.
The third aspect, the invention provides the device of a kind of incremental data copy, and described device comprises: storer and processor, and for carrying out the method for the incremental data copy described in first aspect.
In embodiments of the present invention, when server receives write data requests, bind the cycle sign of data to be written and current period; When incremental data is copied, server only obtains according to the cycle sign of current period the data that receive in current period, and the data of reception are stored in the second storage medium, and copy procedure is simple.And server can obtain the data that receive in current period from buffer memory, and the data of reception are stored in the second storage medium, copying speed is fast, and copy cycle is short.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing of required use during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the method flow diagram of the incremental data copy that provides of the embodiment of the present invention 1;
Fig. 2 is the method flow diagram of the incremental data copy that provides of the embodiment of the present invention 2;
Fig. 3 is the apparatus structure schematic diagram of the incremental data copy that provides of the embodiment of the present invention 3;
Fig. 4 is the apparatus structure schematic diagram of the incremental data copy that provides of the embodiment of the present invention 4.
Embodiment
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing, embodiment of the present invention is described further in detail.
Embodiment 1
The embodiment of the present invention provides a kind of method of incremental data copy.Referring to Fig. 1, wherein, the method comprises:
101: server receives write data requests, this write data requests is carried the offset address of data to be written and data to be written;
102: server is bound the cycle sign of data to be written and current period, and according to the offset address of data to be written, data to be written is stored in the first storage medium;
103: server, according to the cycle sign of current period, obtains the data that receive in current period;
104: server is stored in the data that receive in current period in the second storage medium.
In embodiments of the present invention, when server receives write data requests, bind the cycle sign of data to be written and current period; When incremental data is copied, server only obtains according to the cycle sign of current period the data that receive in current period, and the data of reception are stored in the second storage medium, and copy procedure is simple.
Embodiment 2
The embodiment of the present invention provides a kind of method of incremental data copy.Referring to Fig. 2, wherein, the method comprises:
201: server receives write data requests, this write data requests is carried the offset address of data to be written and data to be written;
Wherein, data to be written are arbitrary data that will write in storage medium; Offset address refers to that data address to be written is with respect to the side-play amount of section first address.
Wherein, when terminal will write in storage medium by data to be written, send write data requests to server, this write data requests is carried the offset address of data to be written and data to be written.
Wherein, it should be noted that, this write data requests is at least carried the offset address of data to be written and data to be written, and this write data requests can also be carried the sign of the first storage medium; Server can obtain the first storage medium according to the sign of this first storage medium.
Wherein, the first storage medium be designated arbitrary sign that can identify the first storage medium, in embodiments of the present invention the sign of the first storage medium is not specifically limited.
202: server is bound the cycle sign of data to be written and current period;
Wherein, the cycle of current period is designated arbitrary sign that can identify current period, and the different cycles has different cycle signs.Cycle sign to current period in the embodiment of the present invention is not specifically limited.For example, cycle sign can be for time numbering etc., and the time initial value of numbering can be arbitrary value.
Wherein, it should be noted that, the data to be written that receive within the identical cycle possess identical cycle sign; The numerical value in cycle can arrange as required and change, and in embodiments of the present invention the value in cycle is not specifically limited.
Wherein, server is bound the operation of the cycle sign of data to be written and current period, can be:
Server obtains the cycle sign of current period, stores the corresponding relation of the cycle sign of data to be written and current period in buffer memory.
Wherein, server is bound the operation of the cycle sign of data to be written and current period, can also be:
Server obtains the cycle sign of current period, preserves the corresponding relation of the Data Identification of data to be written and the cycle of current period sign.
Wherein, server is stored the corresponding relation of the cycle sign of data to be written and current period in buffer memory, during server copy incremental data, can from buffer memory, obtain data to be written, thereby can accelerate incremental data copying speed.
Wherein, it should be noted that, incremental data refers to the data to be written that receive in current period.Incremental data copy refers to incremental data copied in the second storage medium from the first storage medium, or, incremental data is deposited from buffer memory in to the first storage medium and neutralize in the second storage medium.
Further, in next cycle, when server receives the write data requests of terminal transmission, bind the cycle sign of data to be written and next cycle.
203: server, according to the offset address of data to be written, is stored in data to be written in the first storage medium;
Wherein, the first storage medium can be arbitrary storage medium, when server receives write data requests, obtains the first address of the first storage medium; And according to write data requests, obtaining the offset address of data to be written and data to be written, the offset address according to the first address of the first storage medium and data to be written, is stored in data to be written in the first storage medium.
Wherein, when the sign of the first storage medium is also carried in data writing request, when server receives write data requests, the sign of the first storage medium carrying according to write data requests, obtains the first storage medium; According to the first storage medium, obtain the first address of the first storage medium; And according to write data requests, obtaining the offset address of data to be written and data to be written, the offset address according to the first address of the first storage medium and data to be written, is stored in data to be written in the first storage medium.
Wherein, it should be noted that, in step 203, be the offset address that obtains data to be written and data to be written according to write data requests from buffer memory, and the data to be written of obtaining in buffer memory are stored in the first storage medium.
Further, after server is stored in the first storage medium by data to be written, server prompts terminal, successfully writes data to be written in the first storage medium.
Wherein, the operation of server prompts terminal, can be:
Display reminding message in terminal, this prompting message can be: " successfully writing " etc.
204: server, according to the cycle sign of current period, obtains the data that receive in current period;
Wherein, when server copies incremental data, server, according to the cycle sign of current period, obtains the data that receive in current period.
Wherein, server is bound being operating as of cycle sign of data to be written and current period: when server is stored the corresponding relation that cycle of data to be written and current period identifies in buffer memory, server is according to the cycle sign of current period, obtain the operation of the data that receive in current period, can be:
Server, according to the cycle sign of current period, obtains the data that receive in current period in the corresponding relation of the data of buffer memory and cycle sign from buffer memory.
Wherein, server is bound being operating as of cycle sign of data to be written and current period: when server is preserved the corresponding relation that the Data Identification of data to be written and the cycle of current period identify, server is according to the cycle sign of current period, obtain the operation of the data that receive in current period, can be:
Server is according to the cycle sign of current period, from the corresponding relation of the Data Identification stored and cycle sign, obtain the Data Identification of the data that receive in current period, according to the Data Identification of the data that receive, from the first storage medium, obtain the data that receive in current period in current period.
Wherein, it should be noted that, step 203 and step 204 do not have strict time order and function relation, in embodiments of the present invention, can first perform step 203: server, according to the offset address of data to be written, is stored in data to be written in the first storage medium; Perform step again 204: server, according to the cycle sign of current period, obtains the data that receive in current period.Also can first perform step 204: server, according to the cycle sign of current period, obtains the data that receive in current period; Performing step 203: server, according to the offset address of data to be written, is stored in data to be written in the first storage medium.
Wherein, if first perform step 204, perform step again at 203 o'clock, server in step 204 is according to the cycle sign of current period, obtain being operating as of the data that receive in current period: server is according to the cycle sign of current period, in the corresponding relation that the data of buffer memory and cycle identify from buffer memory, obtain the data that receive in current period.
Further, during the data that receive in server copy next cycle, server, according to the cycle sign of next cycle, obtains the data that receive in next cycle.
205: server is stored in the data that receive in current period in the second storage medium;
Wherein, the second storage medium can be the arbitrary storage medium except the first storage medium.
Wherein, server is stored in the operation in the second storage medium by the data that receive in current period, can be:
Server obtains the first address of the second storage medium, and according to write data requests, obtains the offset address of data to be written and data to be written; Server, according to the offset address of the data that receive in the first address of the second storage medium and current period, is stored in the data that receive in current period in the second storage medium.
Wherein, it should be noted that, server, according to the sequencing writing, is all stored in the data that receive in current period in the second storage medium.
Further, when there is a plurality of storage medium, server can obtain the second memory address according to the sign of the second storage medium, and the data that receive in current period are stored in the second storage medium.
Further, in server copy next cycle, receive data time, server, according to the cycle sign of next cycle, obtains the data that receive in next cycle, and the data that receive in the next cycle obtaining is stored in the second storage medium.
206: server prompts terminal, successfully writes the data that receive in current period in the second storage medium.
Wherein, the operation of server prompts terminal, can be:
Display reminding message in terminal, this prompting message can be: " successfully writing " etc.
In embodiments of the present invention, when server receives write data requests, bind the cycle sign of data to be written and current period; When incremental data is copied, server only obtains according to the cycle sign of current period the data that receive in current period, and the data of reception are stored in the second storage medium, and copy procedure is simple.And server can obtain the data that receive in current period from buffer memory, and the data of reception are stored in the second storage medium, copying speed is fast, and copy cycle is short.
Embodiment 3
The embodiment of the present invention provides a kind of device of incremental data copy.Referring to Fig. 3, wherein, this device comprises:
Binding module 302, for binding the cycle sign of data to be written and current period;
The first memory module 303, for according to the offset address of data to be written, is stored in data to be written in the first storage medium;
The second memory module 305, for being stored in the second storage medium by the data that receive in current period.
Further, binding module 302, comprising:
The first acquiring unit 3021, for obtaining the cycle sign of current period;
The first storage unit 3022, for storing the corresponding relation of the cycle sign of data to be written and current period at buffer memory;
Or second acquisition unit 3023, for obtaining the cycle sign of current period;
Storage unit 3024, for preserving the corresponding relation of the Data Identification of data to be written and the cycle of current period sign.
Further, acquisition module 304 for according to the cycle sign of current period, obtains the data that receive in current period in the corresponding relation of the data of buffer memory and cycle sign from buffer memory;
Or, acquisition module 304, for root, according to the cycle of current period, identify, from the corresponding relation of the Data Identification stored and cycle sign, obtain the Data Identification of the data that receive in current period, according to the Data Identification of the data that receive, from the first storage medium, obtain the data that receive in current period in current period.
Further, the second memory module 305, comprising:
The 3rd acquiring unit 3051, for obtaining the offset address of the data that receive in current period;
The second storage unit 3052, for according to the offset address of the data that receive in current period, is stored in the data that receive in current period in the second storage medium.
Further, this device also comprises:
Reminding module 306, for prompt terminal, successfully writes the data that receive in current period in the second storage medium.
In embodiments of the present invention, when server receives write data requests, bind the cycle sign of data to be written and current period; When incremental data is copied, server only obtains according to the cycle sign of current period the data that receive in current period, and the data of reception are stored in the second storage medium, and copy procedure is simple.And server can obtain the data that receive in current period from buffer memory, and the data of reception are stored in the second storage medium, copying speed is fast, and copy cycle is short.
Embodiment 4
The embodiment of the present invention provides a kind of device of incremental data copy.Referring to Fig. 4, wherein, this device comprises:
Receive write data requests, this write data requests is carried the offset address of data to be written and data to be written;
Bind the cycle sign of data to be written and current period, and according to the offset address of data to be written, data to be written are stored in the first storage medium;
According to the cycle sign of current period, obtain the data that receive in current period;
The data that receive in current period are stored in the second storage medium.
Further, bind the cycle sign of data to be written and current period, comprising:
Obtain the cycle sign of current period, in buffer memory, store the corresponding relation of the cycle sign of data to be written and current period;
Or the cycle of obtaining current period identifies, preserve the corresponding relation of the Data Identification of data to be written and the cycle of current period sign.
Further, according to the cycle sign of current period, obtain the data that receive in current period, comprising:
According to the cycle sign of current period, from buffer memory, in the corresponding relation of the data of buffer memory and cycle sign, obtain the data that receive in current period;
Or, according to the cycle sign of current period, from the corresponding relation of the Data Identification stored and cycle sign, obtain the Data Identification of the data that receive in current period, according to the Data Identification of the data that receive, from the first storage medium, obtain the data that receive in current period in current period.
Further, the data that receive in current period are stored in the second storage medium, comprise:
Obtain the offset address of the data that receive in current period;
According to the offset address of the data that receive in current period, the data that receive in current period are stored in the second storage medium.
Further, after the data that receive in current period are stored in the second storage medium, method also comprises:
Prompt terminal, successfully writes the data that receive in current period in the second storage medium.
In embodiments of the present invention, when server receives write data requests, bind the cycle sign of data to be written and current period; When incremental data is copied, server only obtains according to the cycle sign of current period the data that receive in current period, and the data of reception are stored in the second storage medium, and copy procedure is simple.And server can obtain the data that receive in current period from buffer memory, and the data of reception are stored in the second storage medium, copying speed is fast, and copy cycle is short.
It should be noted that: the device of the incremental data copy that above-described embodiment provides is when incremental data copies, only the division with above-mentioned each functional module is illustrated, in practical application, can above-mentioned functions be distributed and by different functional modules, completed as required, the inner structure that is about to device is divided into different functional modules, to complete all or part of function described above.In addition, the device of the incremental data copy that above-described embodiment provides and the embodiment of the method for incremental data copy belong to same design, and its specific implementation process refers to embodiment of the method, repeats no more here.
One of ordinary skill in the art will appreciate that all or part of step that realizes above-described embodiment can complete by hardware, also can come the hardware that instruction is relevant to complete by program, described program can be stored in a kind of computer-readable recording medium, the above-mentioned storage medium of mentioning can be ROM (read-only memory), disk or CD etc.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (11)
1. a method for incremental data copy, is characterized in that, described method comprises:
Receive write data requests, the offset address of data to be written and described data to be written is carried in write data request;
Bind the cycle sign of described data to be written and current period, and according to the offset address of described data to be written, described data to be written are stored in the first storage medium;
According to the cycle sign of described current period, obtain the data that receive in described current period;
The data that receive in described current period are stored in the second storage medium.
2. the method for claim 1, is characterized in that, the cycle sign of the described data to be written of described binding and current period, comprising:
Obtain the cycle sign of current period, in buffer memory, store the corresponding relation of the cycle sign of described data to be written and current period;
Or the cycle of obtaining current period identifies, preserve the corresponding relation of the Data Identification of described data to be written and the cycle of current period sign.
3. the method for claim 1, is characterized in that, the described sign of the cycle according to described current period, obtains the data that receive in described current period, comprising:
According to the cycle sign of described current period, from buffer memory, in the corresponding relation of the data of buffer memory and cycle sign, obtain the data that receive in described current period;
Or, according to the cycle sign of described current period, from the corresponding relation of the Data Identification stored and cycle sign, obtain the Data Identification of the data that receive in described current period, according to the Data Identification of the data that receive, from the first storage medium, obtain the data that receive in described current period in described current period.
4. the method for claim 1, is characterized in that, described the data that receive in described current period is stored in the second storage medium, comprising:
Obtain the offset address of the data that receive in described current period;
According to the offset address of the data that receive in described current period, the data that receive in described current period are stored in described the second storage medium.
5. the method for claim 1, is characterized in that, described the data that receive in described current period are stored in the second storage medium after, described method also comprises:
Prompt terminal, successfully writes the data that receive in described current period in described the second storage medium.
6. a device for incremental data copy, is characterized in that, described device comprises:
Receiver module, for receiving write data requests, the offset address of data to be written and described data to be written is carried in write data request;
Binding module, for binding the cycle sign of described data to be written and current period;
The first memory module, for according to the offset address of described data to be written, is stored in described data to be written in the first storage medium;
Acquisition module, for according to the cycle sign of described current period, obtains the data that receive in described current period;
The second memory module, for being stored in the second storage medium by the data that receive in described current period.
7. device as claimed in claim 6, is characterized in that, described binding module, comprising:
The first acquiring unit, for obtaining the cycle sign of current period;
The first storage unit, for storing the corresponding relation of the cycle sign of described data to be written and current period at buffer memory;
Or second acquisition unit, for obtaining the cycle sign of current period;
Storage unit, for preserving the corresponding relation of the Data Identification of described data to be written and the cycle of current period sign.
8. device as claimed in claim 6, is characterized in that,
Described acquisition module for according to the cycle sign of described current period, obtains the data that receive in described current period in the corresponding relation of the data of buffer memory and cycle sign from buffer memory;
Or, described acquisition module, for root, according to the cycle of described current period, identify, from the corresponding relation of the Data Identification stored and cycle sign, obtain the Data Identification of the data that receive in described current period, according to the Data Identification of the data that receive, from the first storage medium, obtain the data that receive in described current period in described current period.
9. device as claimed in claim 6, is characterized in that, described the second memory module, comprising:
The 3rd acquiring unit, for obtaining the offset address of the data that receive in described current period;
The second storage unit, for according to the offset address of the data that receive in described current period, is stored in the data that receive in described current period in described the second storage medium.
10. device as claimed in claim 6, is characterized in that, described device also comprises:
Reminding module, for prompt terminal, successfully writes the data that receive in described current period in described the second storage medium.
The devices of 11. 1 kinds of incremental datas copy, is characterized in that, described device comprises: storer and processor, and for carrying out the method for the incremental data copy as described in claim as arbitrary in claim 1-5.
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| CN107402838A (en) * | 2016-05-18 | 2017-11-28 | 深圳市深信服电子科技有限公司 | A kind of backup method and storage system based on write buffer |
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| CN103023879A (en) * | 2012-11-26 | 2013-04-03 | 国电南瑞科技股份有限公司 | Method for synchronizing wide area data between data centers based on cache |
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| CN107402838A (en) * | 2016-05-18 | 2017-11-28 | 深圳市深信服电子科技有限公司 | A kind of backup method and storage system based on write buffer |
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