CN105791400A - Method and system for switching cloud desktops - Google Patents
Method and system for switching cloud desktops Download PDFInfo
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- CN105791400A CN105791400A CN201610113546.7A CN201610113546A CN105791400A CN 105791400 A CN105791400 A CN 105791400A CN 201610113546 A CN201610113546 A CN 201610113546A CN 105791400 A CN105791400 A CN 105791400A
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- 230000004044 response Effects 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 3
- 230000001419 dependent effect Effects 0.000 claims description 2
- 238000001514 detection method Methods 0.000 claims description 2
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/08—Protocols specially adapted for terminal emulation, e.g. Telnet
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/14—Error detection or correction of the data by redundancy in operation
- G06F11/1402—Saving, restoring, recovering or retrying
- G06F11/1415—Saving, restoring, recovering or retrying at system level
- G06F11/1435—Saving, restoring, recovering or retrying at system level using file system or storage system metadata
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/14—Error detection or correction of the data by redundancy in operation
- G06F11/1402—Saving, restoring, recovering or retrying
- G06F11/1474—Saving, restoring, recovering or retrying in transactions
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/1095—Replication or mirroring of data, e.g. scheduling or transport for data synchronisation between network nodes
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Abstract
The invention provides a method and a system for switching cloud desktops with same hardware, the method segments a cloud desktop mirror image file, and then identifies and compares sameness and difference of basic mirror images and incremental mirror images of a target cloud desktop and an original cloud desktop; by means of retaining the same mirror images and switching the different mirror images, data required to be updated when switching the cloud desktops is reduced, cloud desktop switching time is reduced; further, the basic mirror images and the incremental mirror images are stored independently, the incremental mirror images are classified into hotspot, normal and cold data types, the basic mirror images are cached in a high-speed solid state disk, the hotspot incremental mirror images are stored in an internal memory, the normal incremental mirror images are stored in a solid state or mechanical hard disk, and the clod incremental mirror images are stored in the mechanical hard disk or other high-capacity storage devices, thus, cloud desktop switching speed is accelerated, system cost is reduced, and fast switching of large concurrent cloud desktops is supported.
Description
Technical field
The present invention relates to the cloud desktop application field of cloud computing, more particularly, to a kind of high-volume, the method and system quickly switching cloud desktop.
Background technology
Cloud computing has become very powerful and exceedingly arrogant S&T capability, and it is the computation schema of a kind of resource-sharing, and this pattern provides cloud service available, efficiently, at a low price.And cloud desktop is exactly a kind of typical cloud computing application, cloud desktop is truly realized the mobile of work, there is good platform-neutral and portability, as long as network is unimpeded, user can in all case indiscriminately ad. as one wishes on-demand selection terminal device logs to cloud desktop, the working top opening oneself is operated, thus enjoying cloud service.
Under actual application scenarios, especially scene is educated, under limited resources supplIes, different courses need to complete switching in the short time interval (5-10min) of break, one cloud desktop correspondence one course, what therefore the quickly switching of different courses made cloud desktop is quickly switching to user's request urgently to be resolved hurrily.Image file owing to constituting cloud desktop is relatively larger, generally there are tens GB, cloud desktop handoff procedure needs spend more computer resource and storage resource, especially seizing and deficiency of resource is more likely caused during batch switching, closing and the time of startup thus expending longer mirror image, reducing the Consumer's Experience quickly switching cloud desktop.It is thus desirable to a kind of new cloud desktop switching method, accelerate the switching of cloud desktop by the segmentation of cloud computing system image file and separate storage.
Summary of the invention
The present invention provides a kind of method switching cloud desktop to realize, by the segmentation of cloud computing system image file and separate storage, reaching quickly to switch the purpose of cloud desktop.
A further object of the present invention is in that to provide a kind of system switching cloud desktop.
In order to reach above-mentioned technique effect, technical scheme is as follows:
A kind of method switching cloud desktop, comprises the following steps:
S1: use system image file division technology by big for data volume and take the image file of more storage resource and carry out fine-grained segmentation, being divided into foundation image and some increment mirror images, any one complete image file is made up of a foundation image and some increment mirror images；
S2: foundation image constitutes different complete image files from increment mirror image, each complete image file constitutes the template of a cloud desktop, all foundation image constituting different cloud desktop are stored in mirror site with increment mirror image, but they will not repeat to be stored in mirror site；
S3: by foundation image and increment mirror image separate storage, foundation image is buffered in high speed solid hard disk；Increment mirror image is divided into focus, general and cold data type, and focus increment mirrored storage is at internal memory, and general increment mirrored storage is at solid-state or mechanical hard disk, and cold increment mirrored storage is in mechanical hard disk or other mass-memory units；
S4: first identify with whether comparison object cloud desktop and primitive nebula desktop have identical foundation image or increment mirror image by mirror image identification technology, if having identical foundation image or increment mirror image, identical mirror image is retained during switching, only switch different mirror image, the mirror image reconstruct after the mirror image of reservation and switching is just completed the switching of whole cloud desktop.
Further, cloud desktop, adopt cloud computing Intel Virtualization Technology to build virtual machine in computing node, including the systems soft ware of virtual machine, application software and hardware.
Foundation image, is mainly conventional computer operating system and fixing conventional application software file, is the foundation forms creating cloud desktop.
Increment mirror image, is mainly used on cloud desktop installing application software in need, configures systems parameters document, forms new cloud desktop, is increment mirror image than foundation image cloud desktop incremental portion in new cloud desktop.
Focus increment mirror image, the increment mirror image that mainly focus or high frequency use, by corresponding system module, the use frequency of each increment mirror image is added up, be divided into focus increment mirror image, general increment mirror image, cold increment mirror image by setting statistical value threshold value.
Mirror site, for storing different foundation image and increment mirror image, foundation image and the increment mirror image of all composition cloud desktops all can find in mirror site.
Mirror image identification technology, the image file of each kind all has unique Uid, and the foundation image as identical has identical Uid, and identical increment mirror image has identical Uid, and vice versa, is carried out the similarities and differences of recognition detection mirror image by Uid.
High speed solid hard disk, has reading speed tracking time fast, random short characteristic, can accelerate image file reading speed.
Further, in described step S3, foundation image uses high speed solid hard disk cache, focus increment mirror image is then stored in internal memory, general increment mirrored storage is at solid-state or mechanical hard disk, cold increment mirrored storage is in mechanical hard disk or other mass-memory units, internal memory, high speed solid hard disk, it is near slowly successively that mechanical hard disk reads the speed of image file, internal memory is dependent on the direct addressin depositor that electric pulse coordinates CPU, it can read file at random, mechanical hard disk is to be found card and sector by mechanical indicator, move to destination address and read file again, compare mechanical hard disk, internal memory and high speed solid hard disk can accelerate the switch speed of cloud desktop.
Further, in described step S4, (1) if foundation image is identical, increment mirror image is different, increment mirror image switch process is: close different increment mirror image, from mirror site, find target switching increment mirror image again, start switching increment mirror image after Batch Clone switching increment mirror image and complete handoff procedure；(2) if foundation image is different, increment mirror image is identical, and foundation image handoff procedure is: closes and is switched foundation image, then finds target switching infrastructure mirror image from mirror site, starts switching infrastructure mirror image and complete handoff procedure after Batch Clone switching infrastructure mirror image；(3) if foundation image and increment mirror image are all different, close the foundation image and increment mirror image that are switched, from mirror site, find target switching infrastructure mirror image and increment mirror image again, after Batch Clone and startup switching infrastructure mirror image and increment mirror image, complete handoff procedure.
Further, increment mirror image has successive ignition, first time increment mirror image builds from foundation image, the basis of the first time complete mirror image that second time increment mirror image synthesizes from first time increment mirror image and foundation image builds, third time increment mirror image builds on the basis of the complete mirror image of second time, by that analogy, a cloud desktop is made up of a foundation image and multiple increment mirror images.Increment mirror image has successive ignition, first time increment mirror image builds from foundation image, second time increment mirror image can build from the basis of the first time complete mirror image that first time increment mirror image and foundation image synthesize, third time increment mirror image builds on the basis of the complete mirror image of second time, by that analogy, a cloud desktop can be made up of a foundation image and n increment mirror image.
Further, owing to increment mirror image data amount is little, kind is many, therefore leaves increment mirror image in internal memory；Foundation image data volume is big, and kind is few, therefore foundation image is stored in high speed solid hard disk；General increment mirror image and cold increment mirror image are used frequency to be stored respectively in high speed solid hard disk and mechanical hard disk according to it.Increment mirror image data amount is little, is usually ten to one thousand MB, but kind is up to a hundred or thousands of kinds, therefore it is more suitable to leave focus increment mirror image in internal memory；Foundation image data volume is big, and up to ten GB, but kind is less than ten kinds, and memory source is relatively limited, therefore foundation image is suitable for being stored in high speed solid hard disk；General increment mirror image and cold increment mirror image are used frequency to be suitable for being stored respectively in high speed solid hard disk and mechanical hard disk because of it.
A kind of system switching cloud desktop, including
Segmentation module: image file is divided into foundation image and some increment mirror images by cutting techniques；
Identification module: the foundation image of target cloud desktop with primitive nebula desktop is identified and contrast with increment mirror image, and identical mirror image retains, different mirror image switch；
Keep module: the identical mirror image being responsible for will identify that makees label, and they need not be closed in handoff procedure, it is only necessary to keep original state；
Close module: the different mirror image being responsible for will identify that makees label, and they need to by Close All in handoff procedure；
Start module: after different mirror image is closed, start and read new image file, new image file being made label simultaneously；
Reconstructed module: be saved in image file as index information by the label information of the foundation image and increment mirror image that constitute new cloud desktop, when reading image file, energy automatic indexing completes the reconstruct of cloud desktop；
Respond module: need feedback system response signal in start-up course, when closing and the startup time exceedes some time threshold or chance failure situation occurs, thus unit is responsible for providing response.
Compared with prior art, technical solution of the present invention provides the benefit that:
1, the inventive method provides a kind of method switching cloud desktop, image file is split, and then identification target cloud desktop and primitive nebula desktop foundation image and increment mirror image is identical and different, retain the different mirror image of identical mirror image switch to reduce cloud desktop switching time, meanwhile, by foundation image and increment mirror image separate storage, foundation image high speed solid hard disk cache, focus increment mirrored storage is at internal memory, general increment mirrored storage is at solid-state or mechanical hard disk, cold increment mirrored storage is in mechanical hard disk or other mass-memory units, the quick switching of the method support concurrent high-volume cloud desktop.
2, a kind of method of the present system correspondence present invention, it is provided that system switching cloud desktop.It includes segmentation module, identification module, maintenance module, closes module, starts module, reconstructed module, respond module, 8 functional modules of high speed solid hard-disk interface, modules cooperates and constitutes an organic whole, effectively achieves the function quickly switching cloud desktop.
Accompanying drawing explanation
Fig. 1 is the system structure schematic diagram of batch cloud desktop handoff procedure in the inventive method；
Fig. 2 is the system structure schematic diagram of foundation image and increment mirror image separate storage in the inventive method；
Fig. 3 is batch cloud desktop handoff procedure instance graph in the inventive method；
Fig. 4 is cloud desktop switching system module figure of the present invention.
Detailed description of the invention
Accompanying drawing being merely cited for property explanation, it is impossible to be interpreted as the restriction to this patent；
In order to the present embodiment is better described, some parts of accompanying drawing have omission, zoom in or out, and do not represent the size of actual product；
To those skilled in the art, in accompanying drawing, some known features and explanation thereof are likely to omission and will be understood by.
Below in conjunction with drawings and Examples, technical scheme is described further.
Embodiment 1
As it is shown in figure 1, a kind of cloud computing mirror site (301) includes some mirror images such as foundation image 1 (101), foundation image 2 (102), foundation image 3 (103) and increment mirror image 1 (201), increment mirror image 2 (202), increment mirror image 3 (203).
Foundation image 1 (401) and increment mirror image 1 (501) constitute cloud desktop VM1 (601), and foundation image 1 (403) constitutes cloud desktop VM2 (603) with increment mirror image 2 (503).
During the switching of cloud desktop, compare the foundation image in cloud desktop 1 and foundation image 1 (401) and the foundation image in cloud desktop 2 and foundation image 1 (403), be all foundation image 1 due to foundation image, then can retain foundation image.
Compare the increment mirror image in cloud desktop 1 and increment mirror image 1 (501) and the increment mirror image in cloud desktop 2 and increment mirror image 2 (503), owing to increment mirror image is different, then need to carry out the switching of increment mirror image.
Increment mirror image 1 (501) and increment mirror image 2 (503) handoff procedure be: all increment mirror images 1 (501) first closing in 100 cloud desktops 1, and from mirror site (301), find increment mirror image 2 (503), start increment mirror image 2 (503) after Batch Clone 100 parts, complete the switching of batch cloud desktop.
As in figure 2 it is shown, foundation image and increment mirror image separate storage, by high speed solid hard disk, such as SSD solid state hard disc, foundation image, focus increment mirror image, general increment mirror image, cold increment mirror image are stored separately.
Moving and the mechanical movement such as dish magnetic rotation owing to traditional magnetic disk is limited to magnetic head, therefore mechanical hard disk response time and throughput have lagged far behind high speed solid hard disk and internal memory, therefore by foundation image and increment mirror image separate storage.Concrete, cold increment mirror image 1 (701), cold increment mirror image 2 (702), cold increment mirror image 3 (703) etc. are stored in mechanical hard disk；Foundation image 1 (801), foundation image 2 (802), foundation image 3 (803), general increment mirror image 1 (804), general increment mirror image 2 (805), general increment mirror image 3 (806) etc. are stored in high speed solid hard disk, such as SSD solid state hard disc；Focus increment mirror image 1 (901), focus increment mirror image 2 (902), focus increment mirror image 3 (903) etc. are stored in internal memory.
During the switching of cloud desktop, at high speed solid hard disk, can quickly delete in SSD solid state hard disc and read-write foundation image, quickly delete in internal memory and read-write focus increment mirror image.Compare traditional unified memory image file to shorten the file reading time and then accelerate cloud desktop switch speed.
Embodiment 2
Shown in Fig. 3 is the example in an actual education scene, assume when resource is fully loaded with, without more calculating resource, user (student and teacher) wishes within the 5-10min break time, batch 100 cloud desktops of switching, the cloud desktop classroom template being about to be made up of different templates is switched to C++ course from Java course.Comprise the following steps:
A1:Java classroom cloud desktop 1 is made up of foundation image 1 (112) and increment mirror image 1 (111), and cloud desktop 2 to cloud desktop 100 is by identical foundation image 1 (112) and increment mirror image 1 (111) composition.
A2:C++ classroom cloud desktop 1 is made up of foundation image 1 (114) and increment mirror image 2 (113), and cloud desktop 2 to cloud desktop 100 is by identical foundation image 1 (114) and increment mirror image 2 (113) composition.
The foundation image 1 (112) of A3: identification Java classroom cloud desktop 1 and the foundation image 1 (114) of C++ classroom cloud desktop 1, because being all foundation image 1, then keep state constant.
The increment mirror image 1 (111) of A4: identification Java classroom cloud desktop 1 and the increment mirror image 2 (113) of C++ classroom cloud desktop, cause one is increment mirror image 1 one is increment mirror image 2, increment mirror image is different, then need increment mirror image 1 is switched to increment mirror image 2.
A5: the handoff procedure of increment mirror image is, first close the increment mirror image 1 (111) of whole Java classrooms cloud desktop 1 to cloud desktop 100, increment mirror image 2 (113) required in C++ classroom cloud desktop is found again from mirror site (301), start after cloning 100 parts, complete switching.After in break 5-10min, break terminates, user (academics and students) can experience the good experience quickly switching course.
As shown in Figure 4, it is cloud desktop switching system module figure of the present invention:
Native system includes 8 modules: segmentation module (121), identification module (122), maintenance module (123), closedown module (124), startup module (125), reconstructed module (126), respond module (127), high speed solid hard disk (128).
Native system work process is: image file is divided into foundation image and some increment mirror images by segmentation module (121), the foundation image of identification module (122) bottom-up identification target cloud desktop and primitive nebula desktop and increment mirror image are with or without the similarities and differences afterwards, identical mirror image and different mirror image are all made label simultaneously, each image file all has to one's name unique Uid, if the Uid of image file is identical, keeps module (123) to make identical mirror image keep state constant according to Uid, neither close without restarting；If the Uid of image file differs, close module (124) and close different mirror image according to the Uid of image file, start module (125) and start new mirror image according to the Uid of image file, reconstructed module (126) will constitute the foundation image of new cloud desktop and increment mirror image rebuilds the cloud desktop becoming new thus completing the switching of cloud desktop, respond module (127) by cloud desktop handoff procedure with complete after information fed back to user or manager by pop-up or prompting message.
In order to accelerate cloud desktop switch speed faster, by foundation image and focus increment mirror image separate storage, the less foundation image file of the bigger kind of high speed solid hard disk (128) cached data amount, data stored in memory amount is relatively small but focus increment mirror image that kind is more, owing to being mainly deletion and the reading of foundation image and increment image file in cloud desktop handoff procedure, separate storage can be greatly shortened the reading speed of file thus accelerating cloud desktop switch speed.
The corresponding same or analogous parts of same or analogous label；
Position relationship described in accompanying drawing be used for the explanation of being merely cited for property, it is impossible to be interpreted as the restriction to this patent；
Obviously, the above embodiment of the present invention is only for clearly demonstrating example of the present invention, and is not the restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here without also cannot all of embodiment be given exhaustive.All any amendment, equivalent replacement and improvement etc. made within the spirit and principles in the present invention, should be included within the protection domain of the claims in the present invention.
Claims (7)
1. the method switching cloud desktop, it is characterised in that comprise the following steps:
S1: use system image file division technology by big for data volume and take the image file of more storage resource and carry out fine-grained segmentation, being divided into foundation image and some increment mirror images, any one complete image file is made up of a foundation image and some increment mirror images；
S2: foundation image constitutes different complete image files from increment mirror image, each complete image file constitutes the template of a cloud desktop, all foundation image constituting different cloud desktop are stored in mirror site with increment mirror image, but they will not repeat to be stored in mirror site；
S3: by foundation image and increment mirror image separate storage, foundation image is buffered in high speed solid hard disk；Increment mirror image is divided into focus, general and cold data type, and focus increment mirrored storage is at internal memory, and general increment mirrored storage is at solid-state or mechanical hard disk, and cold increment mirrored storage is in mechanical hard disk or other mass-memory units；
S4: first identify with whether comparison object cloud desktop and primitive nebula desktop have identical foundation image or increment mirror image by mirror image identification technology, if having identical foundation image or increment mirror image, identical mirror image is retained during switching, only switch different mirror image, the mirror image reconstruct after the mirror image of reservation and switching is just completed the switching of whole cloud desktop.
2. the method for switching cloud desktop according to claim 1, it is characterised in that
Cloud desktop, adopts cloud computing Intel Virtualization Technology to build virtual machine in computing node, including the systems soft ware of virtual machine, application software and hardware.
Foundation image, is mainly conventional computer operating system and fixing conventional application software file, is the foundation forms creating cloud desktop.
Increment mirror image, is mainly used on cloud desktop installing application software in need, configures systems parameters document, forms new cloud desktop, is increment mirror image than foundation image cloud desktop incremental portion in new cloud desktop.
Focus increment mirror image, the increment mirror image that mainly focus or high frequency use, by corresponding system module, the use frequency of each increment mirror image is added up, be divided into focus increment mirror image, general increment mirror image, cold increment mirror image by setting statistical value threshold value.
Mirror site, for storing different foundation image and increment mirror image, foundation image and the increment mirror image of all composition cloud desktops all can find in mirror site.
Mirror image identification technology, the image file of each kind all has unique Uid, and the foundation image as identical has identical Uid, and identical increment mirror image has identical Uid, and vice versa, is carried out the similarities and differences of recognition detection mirror image by Uid.
High speed solid hard disk, has reading speed tracking time fast, random short characteristic, can accelerate image file reading speed.
3. the method for switching cloud desktop according to claim 1, it is characterized in that, in described step S3, foundation image uses high speed solid hard disk cache, focus increment mirror image is then stored in internal memory, general increment mirrored storage is at solid-state or mechanical hard disk, cold increment mirrored storage is in mechanical hard disk or other mass-memory units, internal memory, high speed solid hard disk, it is near slowly successively that mechanical hard disk reads the speed of image file, internal memory is dependent on the direct addressin depositor that electric pulse coordinates CPU, it can read file at random, mechanical hard disk is to be found card and sector by mechanical indicator, move to destination address and read file again, compare mechanical hard disk, internal memory and high speed solid hard disk can accelerate the switch speed of cloud desktop.
4. the method for switching cloud desktop according to claim 1, it is characterized in that, in described step S4, (1) if foundation image is identical, increment mirror image is different, increment mirror image switch process is: closes different increment mirror image, then finds target switching increment mirror image from mirror site, starts switching increment mirror image and complete handoff procedure after Batch Clone switching increment mirror image；(2) if foundation image is different, increment mirror image is identical, and foundation image handoff procedure is: closes and is switched foundation image, then finds target switching infrastructure mirror image from mirror site, starts switching infrastructure mirror image and complete handoff procedure after Batch Clone switching infrastructure mirror image；(3) if foundation image and increment mirror image are all different, close the foundation image and increment mirror image that are switched, from mirror site, find target switching infrastructure mirror image and increment mirror image again, after Batch Clone and startup switching infrastructure mirror image and increment mirror image, complete handoff procedure.
5. the method for switching cloud desktop according to claim 2, it is characterized in that, increment mirror image has successive ignition, first time increment mirror image builds from foundation image, the basis of the first time complete mirror image that second time increment mirror image synthesizes from first time increment mirror image and foundation image builds, third time increment mirror image builds on the basis of the complete mirror image of second time, and by that analogy, a cloud desktop is made up of a foundation image and multiple increment mirror images.
6. the method for switching cloud desktop according to claim 3, it is characterised in that owing to increment mirror image data amount is little, kind is many, therefore leaves increment mirror image in internal memory；Foundation image data volume is big, and kind is few, therefore foundation image is stored in high speed solid hard disk；General increment mirror image and cold increment mirror image are used frequency to be stored respectively in high speed solid hard disk and mechanical hard disk according to it.
7. the system switching cloud desktop, it is characterised in that include
Segmentation module: image file is divided into foundation image and some increment mirror images by cutting techniques；
Identification module: the foundation image of target cloud desktop with primitive nebula desktop is identified and contrast with increment mirror image, and identical mirror image retains, different mirror image switch；
Keep module: the identical mirror image being responsible for will identify that makees label, and they need not be closed in handoff procedure, it is only necessary to keep original state；
Close module: the different mirror image being responsible for will identify that makees label, and they need to by Close All in handoff procedure；
Start module: after different mirror image is closed, start and read new image file, new image file being made label simultaneously；
Reconstructed module: be saved in image file as index information by the label information of the foundation image and increment mirror image that constitute new cloud desktop, when reading image file, energy automatic indexing completes the reconstruct of cloud desktop；
Respond module: need feedback system response signal in start-up course, when closing and the startup time exceedes some time threshold or chance failure situation occurs, thus unit is responsible for providing response.
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| CN106445643B (en) * | 2016-11-14 | 2019-10-22 | 上海云轴信息科技有限公司 | It clones, the method and apparatus of upgrading virtual machine |
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