CN105279011A - Method for performing system restoring on virtual machine according to mirror image - Google Patents
Method for performing system restoring on virtual machine according to mirror image Download PDFInfo
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- CN105279011A CN105279011A CN201510789206.1A CN201510789206A CN105279011A CN 105279011 A CN105279011 A CN 105279011A CN 201510789206 A CN201510789206 A CN 201510789206A CN 105279011 A CN105279011 A CN 105279011A
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Abstract
The invention relates to the technical field of cloud computing, and particularly to a method for performing system restoring on a virtual machine according to a mirror image. The method comprises the steps of selecting the mirror image, shutting the virtual machine down, performing external snapshot according to the mirror image for restoring, restarting the virtual machine after restoring succeeds, and restoring the system of the virtual machine to the selected mirror image system. No storage space is occupied in creating the external snapshot. The snapshot can be directly replaced according to a system disc snapshot path of the virtual machine. Furthermore the mirror image can be selected for restoring the system of a random mirror image. The method of the invention satisfies a requirement of restoring the virtual machine to other systems according to the mirror image, and furthermore can realize restoring of the virtual machine system to an initial state through selecting or no selecting of the mirror image after system breakdown or operating system collapse caused by virus infection or malicious attack, etc., thereby shortening time in stopping applications and services. The method of the invention can be used for restoring the virtual machine system.
Description
Technical field
The present invention relates to field of cloud computer technology, refer in particular to a kind of virtual machine can carry out system reducing method according to mirror image.
Background technology
Under the megatrend of cloud computing development, no matter be physical machine or virtual machine, a lot of user, in the process used, has the demand of replacing system or restoring system, wish virtual machine be replaced with its system selected or revert to the initial state of original system, facilitate it to use.Such as user needs upgrade-system, or incompatible the causing of system needs replacing system etc.; Particularly run the virtual machine of application and service, often faced the danger of virus and malicious attack, the probability of delay machine and operating system collapse is higher.Therefore, need to reduce or replacing system to the system disk of virtual machine, an initial normal state can be quickly recovered to after operating system collapse, the time that application and service stops is shortened as far as possible.Main to change system for main analysis below.
The method of typically changing system to virtual machine is exactly that user needs the system downloading other again to install step by step again, just can convert thereof into other system.And following problem can be brought:
One is want replacing system inconvenient, needs user manually to go to download mirror image, then installs, download and install length consuming time;
Two is that some user may be bad to download and install mirror image, brings inconvenience to a certain extent;
Three is may maloperation occur and cause correctly installing when allowing user install voluntarily, or is configured with misleading and causes and cannot normally work;
Four to be that user obtains the approach of mirror image various, and the mirror image of acquisition cannot ensure its security, may contain malicious code or virus, once outburst, will cause great impact to the network of cloud computing center;
The efficiency of system is changed in order to promote virtual machine, strengthen the convenience that virtual machine changes system, need a kind of virtual machine can carry out the method for system reducing according to mirror image, one key is reduced into the system that user needs, can also solve virtual machine due to poisoning or by the reasons such as malicious attack cause the machine of delaying and operating system collapse after, a key reverts to the state of a normal system.
Summary of the invention
The technical matters that the present invention solves is to provide a kind of virtual machine can carry out the method for system reducing according to mirror image, solve the demand that user can be reduced into virtual machine according to mirror image other system, can also solve virtual machine due to poisoning or by the reasons such as malicious attack cause the machine of delaying and operating system collapse after, by selecting or not selecting mirror image to reduce dummy machine system to initial state, the time that application and service is stopped shortens as far as possible.
The technical scheme that the present invention solves the problems of the technologies described above is:
Step 1, runs a virtual machine at the outside snapshot of host image file, during establishment, all for creating system disk in virtual machine image file;
Step 2, selects mirror image;
Step 3, judges whether virtual machine shuts down, and is shut down when not shutting down, if shutdown directly performs step 4;
Step 4, fill order, creates the outside snapshot of virtual machine, directly replaces original virtual machine snapshot;
Step 5, after snapshot success, judges the state that virtual machine starts most, if shutdown just directly performs step 6, otherwise is just started shooting;
Step 6, mirror image reduction terminates.
The mirror image that described virtual machine can be selected according to user carry out the reduction of system, can be reverted to user-selected system, if do not select the mirror image of mirror image so virtual machine to remain unchanged, is just reverted to initial state.
Described virtual machine directly can carry out snapshot, no longer takies the space of storage, directly can replace virtual machine snapshot according to the system disk snapshot path of virtual machine.
The reduction of described mirror image can at virtual machine due to poisoning or caused the machine of delaying and operating system collapse by reasons such as malicious attacks after, and by selecting or not selecting mirror image to reduce dummy machine system to initial state, the time that application and service is stopped tries one's best shortening.
The mirror image that virtual machine of the present invention can be selected according to user carry out the reduction of system, can be reverted to user-selected system, if do not select the mirror image of mirror image so virtual machine to remain unchanged, is just reverted to initial state.Directly can carry out snapshot, no longer take the space of storage, directly can replace virtual machine snapshot according to the system disk snapshot path of virtual machine.Can virtual machine due to poisoning or caused by reasons such as malicious attacks the machine of delaying and operating system collapse after, by select or do not select mirror image reduce dummy machine system to initial state, the time that application and service is stopped try one's best shortening.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is further described:
Fig. 1 is process flow diagram of the present invention;
Fig. 2 is whether the present invention selects mirror image process flow diagram.
Embodiment
As Fig. 1, shown in 2.Idiographic flow of the present invention is as follows:
1. create an outside snapshot at host image file, then create a virtual machine with this outside snapshot as the system disk of virtual machine
Qemu-imgcreate-b mirror path-fqcow2 system disk snapshot path mirror image size G
2. judge whether user selects mirror image, judge whether mirror image meets the demand creating virtual machine, if do not select mirror image to revert to an initial state of virtual machine original system;
3. judge whether virtual machine shuts down, if shutdown does not just call shutdown command;
4. perform the order of mirror image reduction, directly replace original virtual machine system disk snapshot;
Qemu-imgcreate-b mirror path-fqcow2 system disk snapshot path mirror image size G
5. check whether snapshot creates successfully;
Qemu-imginfo system disk snapshot path
6., after creating snapshot success, judge the state that virtual machine is original, if start, power-on command will be called again and be started shooting;
7. long-rangely after start check whether virtual machine has been replaced with other system or the initial state of the system that reverts to.
Claims (5)
1. virtual machine can carry out a method for mirror image reduction according to system, it is characterized in that: described method comprises the steps:
Step 1, runs a virtual machine at the outside snapshot of host image file, during establishment, all for creating system disk in virtual machine image file;
Step 2, selects mirror image;
Step 3, judges whether virtual machine shuts down, and is shut down when not shutting down, if shutdown directly performs step 4;
Step 4, fill order, creates the outside snapshot of virtual machine, directly replaces original virtual machine snapshot;
Step 5, after snapshot success, judges the state that virtual machine starts most, if shutdown just directly performs step 6, otherwise is just started shooting;
Step 6, mirror image reduction terminates.
2. a kind of virtual machine according to claim 1 can carry out the method for system reducing according to mirror image, it is characterized in that: the mirror image that described virtual machine can be selected according to user carries out the reduction of system, user-selected system can be reverted to, if do not select the mirror image of mirror image so virtual machine to remain unchanged, just reverted to initial state.
3. a kind of virtual machine according to claim 1 can carry out the method for system reducing according to mirror image, it is characterized in that: described virtual machine directly can carry out snapshot, no longer take the space of storage, directly can replace virtual machine snapshot according to the system disk snapshot path of virtual machine.
4. a kind of virtual machine according to claim 2 can carry out the method for system reducing according to mirror image, it is characterized in that: described virtual machine directly can carry out snapshot, no longer take the space of storage, directly can replace virtual machine snapshot according to the system disk snapshot path of virtual machine.
5. a kind of virtual machine according to any one of Claims 1-4 can carry out the method for system reducing according to mirror image, it is characterized in that: the reduction of described mirror image can at virtual machine due to poisoning or caused the machine of delaying and operating system collapse by reasons such as malicious attacks after, by selecting or not selecting mirror image to reduce dummy machine system to initial state, the time that application and service is stopped shortens as far as possible.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510789206.1A CN105279011A (en) | 2015-11-17 | 2015-11-17 | Method for performing system restoring on virtual machine according to mirror image |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510789206.1A CN105279011A (en) | 2015-11-17 | 2015-11-17 | Method for performing system restoring on virtual machine according to mirror image |
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| CN105279011A true CN105279011A (en) | 2016-01-27 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107179934A (en) * | 2016-03-10 | 2017-09-19 | 中标软件有限公司 | The method and system of virtual machine automatic reduction in cloud computing environment |
| CN107463467A (en) * | 2017-08-24 | 2017-12-12 | 浪潮(北京)电子信息产业有限公司 | A kind of method and system that can quickly reduce virtual platform |
| CN107783816A (en) * | 2016-08-31 | 2018-03-09 | 阿里巴巴集团控股有限公司 | The method and device that creation method and device, the big data cluster of virtual machine create |
| CN110968399A (en) * | 2019-12-18 | 2020-04-07 | 腾讯科技（深圳）有限公司 | Virtual machine reloading method and device and computer readable storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107179934A (en) * | 2016-03-10 | 2017-09-19 | 中标软件有限公司 | The method and system of virtual machine automatic reduction in cloud computing environment |
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| CN110968399A (en) * | 2019-12-18 | 2020-04-07 | 腾讯科技（深圳）有限公司 | Virtual machine reloading method and device and computer readable storage medium |
| CN110968399B (en) * | 2019-12-18 | 2023-09-22 | 腾讯科技（深圳）有限公司 | Virtual machine reloading method and device and computer readable storage medium |
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Application publication date: 20160127 |