CN105279100A - Linked clone parent roll updating method and device - Google Patents
Linked clone parent roll updating method and device Download PDFInfo
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- CN105279100A CN105279100A CN201510740937.7A CN201510740937A CN105279100A CN 105279100 A CN105279100 A CN 105279100A CN 201510740937 A CN201510740937 A CN 201510740937A CN 105279100 A CN105279100 A CN 105279100A
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- parent roll
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Abstract
The embodiment of the invention discloses a linked clone parent roll updating method and device. The method comprises a step of cutting an existing linked clone parent roll and a new linked clone parent roll into data blocks with a set size, a step of distributing identifiers for the data blocks included by the existing linked clone parent roll and the data blocks included by the new linked clone parent roll according to an identifier distribution rule and the sequence of obtaining the data blocks, a step of determining the characteristic information of each data block included by the existing linked clone parent roll and each data block included by the new linked clone parent roll, and a step of replacing the data blocks in the existing linked clone parent roll by the data blocks with the same identifier and different characteristic information in the new linked clone parent roll. According to the scheme, the system overhead can be reduced, and a user experience is improved.
Description
Technical field
The present invention relates to field of computer technology, particularly relate to a kind of link clone's parent roll update method and device.
Background technology
Link clone is an important functional characteristic in Intel Virtualization Technology, have establishment speed fast, take the little advantage of storage space, be very suitable for homogeneity user, height of table top standardization scene.The principle of link clone technology is by being a link clone volume by link clone parent roll and link clone difference volume combinatorial mapping, overall as the holonomic system linking clone's virtual machine, is supplied to link clone virtual machine and uses.
Wherein, be illustrated in figure 1 link cloning mechanisms schematic diagram, link clone parent roll is read-only volume, and multiple link clone virtual machine shares a; Link clone difference volume is read-write volume, and each link clone virtual machine is a, saves the data of each link clone virtual machine differentiation.The difference volume being illustrated in figure 2 link clone virtual machine forms principle schematic, link clone difference volume is generally by adopting snapping technique to realize to link clone parent roll, the corresponding link clone virtual machine of each link clone difference volume, link clone parent roll is cloned differentiation data that difference rolls up and is kept to link and clones during difference rolls up with linking.
The system of link clone virtual machine often needs patch installing or upgrades application program, at this moment more will clone parent roll by new url.According to existing link clone parent roll update method, new url clone parent roll is directly adopted to replace existing link clone parent roll.As shown in Figure 3, because existing link clone parent roll is replaced by new url clone parent roll completely, all link clone virtual machines all need to re-create, the instance name of link clone virtual machine also may need to rebuild, user with link the mapping relations of cloning virtual machine and also may need to rebuild, this will increase system overhead; And when replacing existing link clone parent roll, link virtual machine will descend electricity, and this will cause service disconnection, and then affects Consumer's Experience.
Summary of the invention
The embodiment of the present invention provides a kind of link clone's parent roll update method and device, in order to solve the increase system overhead existed in prior art and the problem affecting Consumer's Experience.
First aspect, the embodiment of the present invention provides a kind of link clone parent roll update method, comprising:
Be the data block of setting size respectively by existing link clone's parent roll and the cutting of new url clone parent roll;
Data block that described existing link clone parent roll comprises and the data block allocation identification that described new url clone parent roll comprises is respectively according to mark allocation rule and the sequencing that obtains data block;
Determine the characteristic information of the characteristic information of each data block that described existing link clone parent roll comprises and each data block that described new url clone parent roll comprises;
Data block in described existing link clone parent roll is replaced with like-identified in described new url clone parent roll but the different data block of characteristic information.
In conjunction with first aspect, in the first possible implementation of first aspect, be the data block of setting size by the cutting of existing link clone parent roll, specifically comprise:
Read the logical block addresses LBA of described existing link clone parent roll;
Segmentation is carried out with the LBA of link clone parent roll existing described in the large young pathbreaker of described setting;
In address table, record start address and the end address of every section, obtain the data block that described existing link clone parent roll comprises.
In conjunction with first aspect, in the implementation that the second of first aspect is possible, determine the characteristic information of the characteristic information of each data block that described existing link clone parent roll comprises and each data block that described new url clone parent roll comprises, specifically comprise:
Adopt cryptographic algorithm to be encrypted calculating to each data block that described existing link clone each data block of comprising of parent roll and described new url clone parent roll comprise, obtain the secret value of corresponding data block;
Using the characteristic information of the secret value of each data block as corresponding data block.
In conjunction with first aspect, in the third possible implementation of first aspect, the data block in described existing link clone parent roll is replaced with like-identified in described new url clone parent roll but the different data block of characteristic information, specifically comprises:
Whether more described existing link clone parent roll is identical with the characteristic information of sensible two the same data blocks of described new url clone parent roll acceptance of the bid respectively;
Determine the identical but data block that characteristic information is different of mark, obtain selected data block;
Selected data block in described existing link clone parent roll is replaced with the sensible same selected data block of described new url clone parent roll acceptance of the bid.
The implementation possible in conjunction with the second of the first possible implementation of first aspect, first aspect, first aspect or the third possible implementation of first aspect, in the 4th kind of possible implementation of first aspect, also comprise:
Stop cloning parent roll have linking of dependence to clone virtual machine with described existing link.
Second aspect, the embodiment of the present invention also provides a kind of link clone parent roll updating device, comprising:
Cutting module, for by existing link clone's parent roll and the cutting of new url clone parent roll being the data block of setting size respectively;
Distribution module, for being respectively data block that described existing link clone parent roll comprises and the data block allocation identification that described new url clone parent roll comprises according to mark allocation rule and the sequencing that obtains data block;
Determination module, the characteristic information of each data block that characteristic information and described new url clone parent roll for determining each data block that described existing link clone parent roll comprises comprise;
Replacement module, for replacing with like-identified in described new url clone parent roll but the different data block of characteristic information by the data block in described existing link clone parent roll.
In conjunction with second aspect, in the first possible implementation of second aspect, described cutting module, for being the data block of setting size by the cutting of existing link clone parent roll, specifically comprises:
Read the logical block addresses LBA of described existing link clone parent roll;
Segmentation is carried out with the LBA of link clone parent roll existing described in the large young pathbreaker of described setting;
In address table, record start address and the end address of every section, obtain the data block that described existing link clone parent roll comprises.
In conjunction with second aspect, in the implementation that the second of second aspect is possible, described determination module, the characteristic information of each data block that characteristic information and described new url clone parent roll for determining each data block that described existing link clone parent roll comprises comprise, specifically for:
Adopt cryptographic algorithm to be encrypted calculating to each data block that described existing link clone each data block of comprising of parent roll and described new url clone parent roll comprise, obtain the secret value of corresponding data block;
Using the characteristic information of the secret value of each data block as corresponding data block.
In conjunction with second aspect, in the third possible implementation of second aspect, described replacement module, for the data block in described existing link clone parent roll is replaced with like-identified in described new url clone parent roll but the different data block of characteristic information, specifically comprises:
Whether more described existing link clone parent roll is identical with the characteristic information of sensible two the same data blocks of described new url clone parent roll acceptance of the bid respectively;
Determine the identical but data block that characteristic information is different of mark, obtain selected data block;
Selected data block in described existing link clone parent roll is replaced with the sensible same selected data block of described new url clone parent roll acceptance of the bid.
The implementation possible in conjunction with the second of the first possible implementation of second aspect, second aspect, second aspect or the third possible implementation of second aspect, in the 4th kind of possible implementation of second aspect, also comprise termination module, for:
Stop cloning parent roll have linking of dependence to clone virtual machine with described existing link.
The embodiment of the present invention provides a kind of link clone's parent roll update method and device, is the data block of setting size respectively by existing link clone's parent roll and the cutting of new url clone parent roll; Data block that described existing link clone parent roll comprises and the data block allocation identification that described new url clone parent roll comprises is respectively according to mark allocation rule and the sequencing that obtains data block; Determine the characteristic information of the characteristic information of each data block that described existing link clone parent roll comprises and each data block that described new url clone parent roll comprises; Data block in described existing link clone parent roll is replaced with like-identified in described new url clone parent roll but the different data block of characteristic information.In the program, owing to just substituted for the partial data block in existing link clone parent roll according to new url clone parent roll, existing link clone parent roll is not replaced by new url clone parent roll completely, all link clone virtual machines do not need to re-create, the instance name of link clone virtual machine does not need to rebuild yet, user with link the mapping relations of cloning virtual machine and also do not need to rebuild, thus reduce system overhead; Further, link virtual machine does not need lower electricity yet, thus can guarantee that business continues to carry out, and promotes Consumer's Experience.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, for those of ordinary skills, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic diagram linking cloning mechanisms in prior art;
Fig. 2 is that the difference volume of link clone virtual machine in prior art forms principle schematic;
Fig. 3 links the schematic diagram that parent roll clones more new principle in prior art;
Fig. 4 is a kind of process flow diagram linking clone's parent roll update method of the embodiment of the present invention;
Fig. 5 is the process flow diagram of S41 in the embodiment of the present invention;
Fig. 6 is the process flow diagram of S44 in the embodiment of the present invention;
Fig. 7 is a kind of structural representation linking clone's parent roll updating device in the embodiment of the present invention;
Fig. 8 is the structural representation of another kind of link clone parent roll updating device in the embodiment of the present invention.
Embodiment
For the increase system overhead existed in prior art and the problem affecting Consumer's Experience, the embodiment of the present invention provides a kind of link clone parent roll update method, the method can be, but not limited to application in the terminal, and the flow process of the method as shown in Figure 4, specifically comprises the steps:
S41: the data block by existing link clone's parent roll and the cutting of new url clone parent roll being setting size respectively.
Terminal is when more new url clones parent roll, be not comprising all data all need upgrade, usually just need to upgrade a wherein part, therefore, it can be the data block of setting size by existing link clone's parent roll and the cutting of new url clone parent roll, then determine which data block upgrades, finally replace the data block upgraded in existing link clone parent roll.In order to realize carrying out block level to existing link clone parent roll, other upgrades, and first needs existing link clone's parent roll and new url clone parent roll to carry out cutting, obtains the data block setting size.
Wherein, setting size can set according to actual needs, such as, can be set as, 16M, 32M, 64M, 128M etc.
S42: be respectively data block that existing link clone parent roll comprises and the data block allocation identification that new url clone parent roll comprises according to mark allocation rule and the sequencing that obtains data block.
Identical mark allocation rule can be adopted respectively to the data block allocation identification that the existing link clone data block that comprises of parent roll and new url clone parent roll comprise, thus the mark ensureing data block corresponding in existing link clone's parent roll and new url clone parent roll is identical, be convenient to follow-up enter existing link clone in parent roll and carry out data block replacement.
S43: the characteristic information determining the characteristic information of each data block that existing link clone parent roll comprises and each data block that new url clone parent roll comprises.
The specific implementation process of this step can be: adopt cryptographic algorithm to be encrypted calculating to each data block that existing link clone each data block of comprising of parent roll and new url clone parent roll comprise, obtain the secret value of corresponding data block; Using the characteristic information of the secret value of each data block as corresponding data block.
Wherein, cryptographic algorithm selection has multiple, and preferably Message Digest Algorithm 5 (MessageDigestAlgorithm, MD5), now the eigenwert of data block is the MD5 value of data block.
S44: the data block in existing link clone parent roll is replaced with like-identified in new url clone parent roll but the different data block of characteristic information.
In the program, owing to just substituted for the partial data block in existing link clone parent roll according to new url clone parent roll, existing link clone parent roll is not replaced by new url clone parent roll completely, all link clone virtual machines do not need to re-create, the instance name of link clone virtual machine does not need to rebuild yet, user with link the mapping relations of cloning virtual machine and also do not need to rebuild, thus reduce system overhead; Further, link virtual machine does not need lower electricity yet, thus can guarantee that business continues to carry out, and promotes Consumer's Experience.
Concrete, in above-mentioned S41 by the cutting of existing link clone parent roll be the data block implementation procedure of setting size as shown in Figure 5, specifically comprise:
S411: the logical block addresses (LogicalBlockAddress, LBA) reading existing link clone parent roll.
Because existing link clone parent roll has been kept in the disk of terminal, therefore, the LBA first obtaining existing link clone parent roll is needed.
S412: carry out segmentation with the LBA setting large young pathbreaker existing link clone parent roll.
S413: start address and the end address of recording every section in address table, obtains the data block that existing link clone parent roll comprises.
The LBA of existing link clone parent roll may be continuous print, also may be discrete, and therefore, the start address of every section obtained after parent roll segmentation is cloned in existing link and end address can be continuous print, also can be discrete.The start address of existing link clone parent roll every section and end address can be saved, one is preferred embodiment be kept in address table, as shown in table 1 below:
| Data block identifier | Start address | End address |
| 1 | 10000011 | 10001111 |
| 2 | XXXX | XXXX |
| … | XXXX | XXXX |
| N | XXXX | XXXX |
Table 1
Concrete, in above-mentioned S44, the data block in existing link clone parent roll is replaced with like-identified in new url clone parent roll but the implementation procedure of the different data block of characteristic information as shown in Figure 6, specifically comprise:
S441: whether more existing link clone parent roll is identical with the characteristic information of sensible two the same data blocks of new url clone parent roll acceptance of the bid respectively.
S442: determine the identical but data block that characteristic information is different of mark, obtain selected data block.
S443: the selected data block in existing link clone parent roll is replaced with the sensible same selected data block of new url clone parent roll acceptance of the bid.
Whether the characteristic information for the ease of more existing link clone's parent roll and sensible two the same data blocks of new url clone parent roll acceptance of the bid is identical, can increase by two row more in Table 1, be used for preserving the characteristic information of each data block that the characteristic information of each data block that existing link clone parent roll comprises and new url clone parent roll comprise, as shown in table 2, be wherein MD5 value with characteristic information for example is described:
Table 2
Identify the identical but data block that characteristic information is different, selected data block can be defined as, then the selected data block in existing link clone parent roll is directly replaced with the selected data block of like-identified in new url clone parent roll, the renewal of existing link clone parent roll can be completed.
Optionally, in order to prevent in the process of more new url clone parent roll, link clone virtual machine performs read operation to link clone parent roll, before more new url clones parent roll, can also stop cloning parent roll have linking of dependence to clone virtual machine with existing link, thus guarantee to link carrying out smoothly of clone's parent roll renewal process, after the renewal completing link clone parent roll, then recover these links clone virtual machine.
Based on same inventive concept, the embodiment of the present invention provides a kind of link clone parent roll updating device, this device can be, but not limited to arrange in the terminal, and the structure of this device as shown in Figure 7, comprises cutting module 71, distribution module 72, determination module 73 and replacement module 74.Wherein:
Above-mentioned cutting module 71, for by existing link clone's parent roll and the cutting of new url clone parent roll being the data block of setting size respectively;
Above-mentioned distribution module 72, for being respectively data block that existing link clone parent roll comprises and the data block allocation identification that new url clone parent roll comprises according to mark allocation rule and the sequencing that obtains data block;
Above-mentioned determination module 73, the characteristic information of each data block that characteristic information and new url clone parent roll for determining each data block that existing link clone parent roll comprises comprise;
Above-mentioned replacement module 74, for replacing with like-identified in new url clone parent roll but the different data block of characteristic information by the data block in existing link clone parent roll.
In the program, owing to just substituted for the partial data block in existing link clone parent roll according to new url clone parent roll, existing link clone parent roll is not replaced by new url clone parent roll completely, all link clone virtual machines do not need to re-create, the instance name of link clone virtual machine does not need to rebuild yet, user with link the mapping relations of cloning virtual machine and also do not need to rebuild, thus reduce system overhead; Further, link virtual machine does not need lower electricity yet, thus can guarantee that business continues to carry out, and promotes Consumer's Experience.
Concrete, above-mentioned cutting module 71, for being the data block of setting size by the cutting of existing link clone parent roll, specifically comprises:
Read the LBA of existing link clone parent roll;
Segmentation is carried out with the LBA setting large young pathbreaker existing link clone parent roll;
In address table, record start address and the end address of every section, obtain the data block that existing link clone parent roll comprises.
Concrete, above-mentioned determination module 73, the characteristic information of each data block that characteristic information and new url clone parent roll for determining each data block that existing link clone parent roll comprises comprise, specifically for:
Adopt cryptographic algorithm to be encrypted calculating to each data block that existing link clone each data block of comprising of parent roll and new url clone parent roll comprise, obtain the secret value of corresponding data block;
Using the characteristic information of the secret value of each data block as corresponding data block.
Concrete, above-mentioned replacement module 74, for the data block in existing link clone parent roll being replaced with like-identified in new url clone parent roll but the different data block of characteristic information, specifically comprises:
Whether more existing link clone parent roll is identical with the characteristic information of sensible two the same data blocks of new url clone parent roll acceptance of the bid respectively;
Determine the identical but data block that characteristic information is different of mark, obtain selected data block;
Selected data block in existing link clone parent roll is replaced with the sensible same selected data block of new url clone parent roll acceptance of the bid.
Optionally, the embodiment of the present invention also provides another kind of link clone parent roll updating device, and the structure of this device as shown in Figure 8, on the basis of the device shown in Fig. 7, also comprises and stops module 75, for:
Stop cloning parent roll have linking of dependence to clone virtual machine with existing link.
The present invention describes with reference to according to the process flow diagram of the method for the embodiment of the present invention, equipment (system) and computer program and/or block scheme.Should understand can by the combination of the flow process in each flow process in computer program instructions realization flow figure and/or block scheme and/or square frame and process flow diagram and/or block scheme and/or square frame.These computer program instructions can being provided to the processor of multi-purpose computer, special purpose computer, Embedded Processor or other programmable data processing device to produce a machine, making the instruction performed by the processor of computing machine or other programmable data processing device produce device for realizing the function of specifying in process flow diagram flow process or multiple flow process and/or block scheme square frame or multiple square frame.
These computer program instructions also can be stored in can in the computer-readable memory that works in a specific way of vectoring computer or other programmable data processing device, the instruction making to be stored in this computer-readable memory produces the manufacture comprising command device, and this command device realizes the function of specifying in process flow diagram flow process or multiple flow process and/or block scheme square frame or multiple square frame.
These computer program instructions also can be loaded in computing machine or other programmable data processing device, make on computing machine or other programmable devices, to perform sequence of operations step to produce computer implemented process, thus the instruction performed on computing machine or other programmable devices is provided for the step realizing the function of specifying in process flow diagram flow process or multiple flow process and/or block scheme square frame or multiple square frame.
Although describe optional embodiment of the present invention, those skilled in the art once obtain the basic creative concept of cicada, then can make other change and amendment to these embodiments.So claims are intended to be interpreted as comprising embodiment and falling into all changes and the amendment of the scope of the invention.
Obviously, those skilled in the art can carry out various change and modification to the embodiment of the present invention and not depart from the spirit and scope of the embodiment of the present invention.Like this, if these amendments of the embodiment of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (10)
1. a link clone parent roll update method, is characterized in that, comprising:
Be the data block of setting size respectively by existing link clone's parent roll and the cutting of new url clone parent roll;
Data block that described existing link clone parent roll comprises and the data block allocation identification that described new url clone parent roll comprises is respectively according to mark allocation rule and the sequencing that obtains data block;
Determine the characteristic information of the characteristic information of each data block that described existing link clone parent roll comprises and each data block that described new url clone parent roll comprises;
Data block in described existing link clone parent roll is replaced with like-identified in described new url clone parent roll but the different data block of characteristic information.
2. the method for claim 1, is characterized in that, is the data block of setting size, specifically comprises the cutting of existing link clone parent roll:
Read the logical block addresses LBA of described existing link clone parent roll;
Segmentation is carried out with the LBA of link clone parent roll existing described in the large young pathbreaker of described setting;
In address table, record start address and the end address of every section, obtain the data block that described existing link clone parent roll comprises.
3. the method for claim 1, is characterized in that, determines the characteristic information of the characteristic information of each data block that described existing link clone parent roll comprises and each data block that described new url clone parent roll comprises, specifically comprises:
Adopt cryptographic algorithm to be encrypted calculating to each data block that described existing link clone each data block of comprising of parent roll and described new url clone parent roll comprise, obtain the secret value of corresponding data block;
Using the characteristic information of the secret value of each data block as corresponding data block.
4. the method for claim 1, is characterized in that, the data block in described existing link clone parent roll is replaced with like-identified in described new url clone parent roll but the different data block of characteristic information, specifically comprises:
Whether more described existing link clone parent roll is identical with the characteristic information of sensible two the same data blocks of described new url clone parent roll acceptance of the bid respectively;
Determine the identical but data block that characteristic information is different of mark, obtain selected data block;
Selected data block in described existing link clone parent roll is replaced with the sensible same selected data block of described new url clone parent roll acceptance of the bid.
5. the method as described in as arbitrary in claim 1-4, is characterized in that, also comprise:
Stop cloning parent roll have linking of dependence to clone virtual machine with described existing link.
6. a link clone parent roll updating device, is characterized in that, comprising:
Cutting module, for by existing link clone's parent roll and the cutting of new url clone parent roll being the data block of setting size respectively;
Distribution module, for being respectively data block that described existing link clone parent roll comprises and the data block allocation identification that described new url clone parent roll comprises according to mark allocation rule and the sequencing that obtains data block;
Determination module, the characteristic information of each data block that characteristic information and described new url clone parent roll for determining each data block that described existing link clone parent roll comprises comprise;
Replacement module, for replacing with like-identified in described new url clone parent roll but the different data block of characteristic information by the data block in described existing link clone parent roll.
7. device as claimed in claim 6, is characterized in that, described cutting module, for being the data block of setting size by the cutting of existing link clone parent roll, specifically comprises:
Read the logical block addresses LBA of described existing link clone parent roll;
Segmentation is carried out with the LBA of link clone parent roll existing described in the large young pathbreaker of described setting;
In address table, record start address and the end address of every section, obtain the data block that described existing link clone parent roll comprises.
8. device as claimed in claim 6, is characterized in that, described determination module, the characteristic information of each data block that characteristic information and described new url clone parent roll for determining each data block that described existing link clone parent roll comprises comprise, specifically for:
Adopt cryptographic algorithm to be encrypted calculating to each data block that described existing link clone each data block of comprising of parent roll and described new url clone parent roll comprise, obtain the secret value of corresponding data block;
Using the characteristic information of the secret value of each data block as corresponding data block.
9. device as claimed in claim 6, is characterized in that, described replacement module, for the data block in described existing link clone parent roll being replaced with like-identified in described new url clone parent roll but the different data block of characteristic information, specifically comprises:
Whether more described existing link clone parent roll is identical with the characteristic information of sensible two the same data blocks of described new url clone parent roll acceptance of the bid respectively;
Determine the identical but data block that characteristic information is different of mark, obtain selected data block;
Selected data block in described existing link clone parent roll is replaced with the sensible same selected data block of described new url clone parent roll acceptance of the bid.
10. the device as described in as arbitrary in claim 6-9, is characterized in that, also comprise termination module, for:
Stop cloning parent roll have linking of dependence to clone virtual machine with described existing link.
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| CN107273146A (en) * | 2016-04-08 | 2017-10-20 | 中兴通讯股份有限公司 | Virtual machine upgrade method and device |
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