CN112860376B - Snapshot chain manufacturing method and device, electronic equipment and storage medium - Google Patents
Snapshot chain manufacturing method and device, electronic equipment and storage medium Download PDFInfo
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/455—Emulation; Interpretation; Software simulation, e.g. virtualisation or emulation of application or operating system execution engines
- G06F9/45533—Hypervisors; Virtual machine monitors
- G06F9/45558—Hypervisor-specific management and integration aspects
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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
- G06F11/1438—Restarting or rejuvenating
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F8/00—Arrangements for software engineering
- G06F8/60—Software deployment
- G06F8/61—Installation
- G06F8/63—Image based installation; Cloning; Build to order
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/455—Emulation; Interpretation; Software simulation, e.g. virtualisation or emulation of application or operating system execution engines
- G06F9/45533—Hypervisors; Virtual machine monitors
- G06F9/45558—Hypervisor-specific management and integration aspects
- G06F2009/45562—Creating, deleting, cloning virtual machine instances
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/455—Emulation; Interpretation; Software simulation, e.g. virtualisation or emulation of application or operating system execution engines
- G06F9/45533—Hypervisors; Virtual machine monitors
- G06F9/45558—Hypervisor-specific management and integration aspects
- G06F2009/45587—Isolation or security of virtual machine instances
Abstract
The disclosure discloses a method and a device for manufacturing a snapshot chain, electronic equipment and a storage medium, and relates to the technology of virtual machines. The specific scheme is as follows: receiving a current instruction for making a snapshot of the virtual machine; responding to the instruction, and storing the increment data of the current system disk of the virtual machine at the current time into a storage service component; and the incremental data is used as an incremental snapshot to be stored; based on the snapshot chain and the increment snapshot corresponding to the storage service assembly at the previous moment, obtaining the snapshot chain corresponding to the storage service assembly at the current moment; and if the number of the increment snapshots at the current time is smaller than the preset value, repeating the operation until the number of the increment snapshots at the current time is equal to the preset value. The embodiment can greatly weaken the strong dependency relationship between the snapshots on the snapshot chain, thereby greatly improving the integrity and the correctness of the snapshot chain and reducing various overtime and error problems frequently occurring due to overlong links.
Description
Technical Field
The disclosure relates to the field of computer technology, and further relates to virtual machine technology, in particular to a method and a device for manufacturing a snapshot chain, electronic equipment and a storage medium.
Background
In the prior art, the operation flow for making the snapshot chain is as follows: downloading each snapshot data on a snapshot chain stored on a storage service assembly (Bos) to a local place, and then establishing the snapshot chain through qemu-img rebase operation; the snapshot rollback operation flow is: and executing qemu-img commit operation in reverse order on snapshot data on a snapshot chain, submitting and compressing the data into disk data new-disk, and executing qemu-img convert operation on the new-disk to manufacture a new virtual machine image, and starting a virtual machine on the basis of the new-disk to realize snapshot rollback operation. When the two operations are realized, all data on the snapshot chain is required to be downloaded to the local physical machine, and when the data is excessive, the risk of filling up the disk of the physical machine exists; when the snapshot chain is too long, it is time consuming because there are too many data blocks that need to be downloaded. Moreover, if a snapshot fails to be transferred during the process of manufacture, the integrity of the whole snapshot chain is destroyed, and even if the time is spent, the disk data cannot be corrected, that is, the snapshot cannot be restored to the moment.
The existing snapshot chain service design is adopted, so that snapshots on a snapshot chain have strong dependence on each other, and when the snapshot chain is overlong, the integrity and the correctness of the snapshots are not ensured; when the image is created or the snapshot operation is rolled back through the snapshot, the phenomenon that the operation flow takes too long occurs, and the risk that the operation flow is not necessarily successful finally exists; since the primary means that the security of virtual machine data of a local system disk can be relied on is to create a snapshot to perform backup, if the snapshot chain is incomplete, when a physical machine failure occurs, the data in the virtual machine system disk is at risk of being lost.
Disclosure of Invention
The application provides a method, a device, electronic equipment and a storage medium for manufacturing a snapshot chain, which can greatly weaken the strong dependency relationship between snapshots on the snapshot chain, thereby greatly improving the integrity and the correctness of the snapshot chain and reducing various overtime and error problems frequently occurring due to overlong links.
According to a first aspect of the present application, there is provided a method for making a snapshot chain, the method comprising:
receiving a current instruction for making a snapshot of the virtual machine;
responding to the current instruction for making the snapshot of the virtual machine, and storing the incremental data of the current system disk of the virtual machine at the current time into a storage service component; the incremental data of the current system disk at the current time is used as an incremental snapshot to be stored;
based on a snapshot chain and the incremental snapshot which are stored in advance and correspond to the storage service assembly at the previous moment, obtaining a snapshot chain corresponding to the storage service assembly at the current moment; and if the number of the increment snapshots of the storage service component at the current time is smaller than a preset value, repeating the operation until the number of the increment snapshots of the storage service component at the current time is equal to the preset value.
According to a second aspect of the present application, there is provided an apparatus for producing a snapshot chain, the apparatus comprising: the device comprises a receiving module, a storage module and a manufacturing module; wherein, the liquid crystal display device comprises a liquid crystal display device,
the receiving module is used for receiving a current instruction for making the virtual machine snapshot;
the storage module is used for responding to the current instruction for making the snapshot of the virtual machine and storing the incremental data of the current system disk of the virtual machine at the current moment into the storage service component; the incremental data of the current system disk at the current time is used as an incremental snapshot to be stored;
the making module is used for obtaining a snapshot chain corresponding to the storage service assembly at the current moment based on a snapshot chain corresponding to the storage service assembly at the previous moment and the incremental snapshot which are stored in advance; and if the number of the increment snapshots of the storage service component at the current time is smaller than a preset value, repeating the operation until the number of the increment snapshots of the storage service component at the current time is equal to the preset value.
According to a third aspect of the present application, there is provided an electronic device comprising:
one or more processors;
A memory for storing one or more programs,
the one or more programs, when executed by the one or more processors, cause the one or more processors to implement the method for producing a snapshot chain as described in any embodiment of the present application.
According to a fourth aspect of the present application, there is provided a storage medium having stored thereon a computer program which, when executed by a processor, implements a method of making a snapshot chain as described in any of the embodiments of the present application.
According to a fifth aspect of the present application, there is provided a computer program product, which when executed by a computer device, implements the method for producing a snapshot chain according to any embodiment of the present application.
According to the technology, the problem that the existing snapshot chain service design ensures that snapshots on a snapshot chain have strong dependence on each other is solved, and when the snapshot chain is overlong, the integrity and the correctness of the snapshot cannot be ensured; when the mirror image is created or the snapshot operation is rolled back through the snapshot, the phenomenon that the operation flow takes too long can occur, and finally the technical problem that the operation flow is not necessarily successful is solved.
It should be understood that the description in this section is not intended to identify key or critical features of the embodiments of the disclosure, nor is it intended to be used to limit the scope of the disclosure. Other features of the present disclosure will become apparent from the following specification.
Drawings
The drawings are for better understanding of the present solution and do not constitute a limitation of the present application. Wherein:
FIG. 1 is a first flow chart of a method for manufacturing a snapshot chain according to an embodiment of the present disclosure;
FIG. 2 is a second flow chart of a method for manufacturing a snapshot chain according to an embodiment of the present disclosure;
FIG. 3 is a schematic structural diagram of a disk assembly on a virtual machine physical machine according to an embodiment of the present disclosure;
fig. 4 is a schematic structural diagram of a device for making a snapshot chain according to an embodiment of the present application;
FIG. 5 is a block diagram of an electronic device for implementing a method of making a snapshot chain in accordance with an embodiment of the present application.
Detailed Description
Exemplary embodiments of the present disclosure are described below in conjunction with the accompanying drawings, which include various details of the embodiments of the present disclosure to facilitate understanding, and should be considered as merely exemplary. Accordingly, one of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the present disclosure. Also, descriptions of well-known functions and constructions are omitted in the following description for clarity and conciseness.
Example 1
Fig. 1 is a schematic flow chart of a method for making a snapshot chain according to an embodiment of the present application, where the method may be performed by an apparatus for making a snapshot chain or an electronic device, where the apparatus or the electronic device may be implemented by software and/or hardware, and the apparatus or the electronic device may be integrated into any intelligent device with a network communication function. As shown in fig. 1, the method for making the snapshot chain may include the following steps:
s101, receiving a current instruction for making a snapshot of the virtual machine.
In this step, the electronic device may receive a current instruction to make a snapshot of the virtual machine. A disk snapshot is a copy of a virtual machine disk file at some point in time. At present, snapshot files of the virtual machine running on line are usually made regularly, so that when the virtual machine running on line is abnormal, a user can make a virtual machine restore point based on the snapshot files to restore the virtual machine to a state at the snapshot time. At present, the method for manufacturing the online snapshot of the virtual machine comprises the following steps: under the condition that the running of the virtual machine is not affected, the running state data in the virtual machine cache running on line is obtained and written into the snapshot file of the disk, so that the manufacture of the snapshot file is completed. In the actual operation process, the operation state data of the virtual machine is written into the disk at a certain speed, and because the virtual machine is always in an operation state in the process of writing data into the disk, when new operation state data is written into the disk, the operation state data of the written disk in the cache can be changed, and if the operation state data of the written disk in the cache is changed, the changed operation state data is written into the snapshot file of the disk again, so that the manufactured snapshot file is ensured to be consistent with the operation state data in the cache.
In a specific embodiment of the present application, a system administrator first establishes a virtual machine in a server and starts the virtual machine. After the virtual machine is started, a system administrator can send out an instruction for making a snapshot of the virtual machine through operation, so that the virtual machine in a running state executes the snapshot file creation. Or, the user can pre-configure the snapshot making period of the virtual machine, and when the snapshot making period is reached, the instruction for making the virtual machine snapshot is automatically triggered so that the virtual machine makes a snapshot file; for example, when the snapshot making period configured by the user is 10 minutes, the virtual machine is triggered to make a snapshot file every 10 minutes.
S102, responding to a current instruction for making a snapshot of the virtual machine, and storing incremental data of a current system disk of the virtual machine at a current time into a storage service component; and the incremental data of the current system disk at the current time is used as an incremental snapshot to be stored.
In the step, the electronic equipment can respond to the current instruction for making the snapshot of the virtual machine and save the incremental data of the current system disk of the virtual machine at the current moment into a storage service component; and the incremental data of the current system disk at the current time is used as an incremental snapshot to be stored. Specifically, the electronic device may save incremental data of a current system disk of the virtual machine at a current time to the storage service component through Glance. Glance is a module responsible for image management in an Openstack project, and functions of the module include searching, registering, retrieving and the like of a virtual machine image. The Restful API provided by Glance can inquire metadata of the virtual machine image and acquire the image; in addition, glance may also save images to various back-end stores, such as simple file stores or object stores.
S103, obtaining a snapshot chain corresponding to the storage service assembly at the current moment based on the virtual machine disk data and the incremental data of the storage service assembly at the previous moment, which are stored in advance; if the number of the increment snapshots of the storage service component at the current time is smaller than the preset value, repeating the operation until the number of the increment snapshots of the storage service component at the current time is equal to the preset value.
In the step, the electronic device can obtain a snapshot chain corresponding to the storage service assembly at the current moment based on the virtual machine disk data and the incremental data of the pre-stored storage service assembly at the previous moment; if the number of the increment snapshots of the storage service component at the current time is smaller than the preset value, repeating the operation until the number of the increment snapshots of the storage service component at the current time is equal to the preset value. Further, if the number of incremental snapshots of the storage service component at the current time is equal to a predetermined value, the electronic device may obtain virtual machine disk data of the storage service component at the current time based on virtual machine disk data and incremental data of the storage service component at the previous time, which are stored in advance; the virtual machine disk data of the storage service assembly at the current time is used as a full snapshot to be stored; then creating a new system disk based on the virtual machine disk data of the storage service component at the current time; and takes the new system disk as the current system disk. Specifically, the electronic device may submit the virtual machine disk data of the storage service component at the current time to the compression disk corresponding to the previous time; then compressing and combining the virtual machine disk data of the storage service assembly at the current time through the corresponding compression disk at the previous time to obtain a compression and combination result of the virtual machine disk data of the storage service assembly at the current time; and creating a new system disk based on the compression and combination result of the virtual machine disk data of the storage service assembly at the current time.
The method for manufacturing the snapshot chain firstly receives a current instruction for manufacturing the virtual machine snapshot; then responding to the current instruction for making the snapshot of the virtual machine, and storing the incremental data of the current system disk of the virtual machine at the current time into a storage service component; the incremental data of the current system disk at the current time is used as an incremental snapshot to be stored; based on the virtual machine disk data and the incremental data of the pre-stored storage service assembly at the previous moment, obtaining a snapshot chain corresponding to the storage service assembly at the current moment; if the number of the increment snapshots of the storage service component at the current time is smaller than the preset value, repeating the operation until the number of the increment snapshots of the storage service component at the current time is equal to the preset value. That is, in the snapshot chain with strong dependency relationship, the method and the device are used for inputting full snapshots at specified intervals to weaken the association relationship; that is, in the original all-incremental snapshot chain, a full snapshot is created at a specified length, so that the subsequent specified number of snapshots of the full snapshot are all incremental snapshots based thereon. Only the snapshots between two full snapshots have strong dependency, so that the strong dependency range can be greatly reduced, the growing range of the related snapshots is limited only in a fixed interval, and the shortening of a snapshot chain can be realized. In the existing snapshot chain manufacturing method, snapshots on the snapshot chain have strong dependency on each other, and when the snapshot chain is too long, the integrity and the correctness of the snapshots are not guaranteed. Because the method adopts the technical means of reducing the strong dependency range so that the growth range of the related snapshot is only limited in a fixed interval, the problem that the snapshots on the snapshot chain have strong dependency on each other due to the conventional snapshot chain service design is overcome, and when the snapshot chain is overlong, the integrity and the correctness of the snapshot are not ensured; when a mirror image is created or snapshot operation is rolled back through the snapshot, the phenomenon that the operation flow takes too long and finally the technical problem of technical problem that the operation flow is not necessarily successful occurs, and the technical scheme provided by the application can greatly weaken the strong dependency relationship between the snapshots on the snapshot chain, so that the integrity and the correctness of the snapshot chain can be greatly improved, and various overtime and error problems frequently occurring due to overlong links are reduced; in addition, the technical scheme of the embodiment of the application is simple and convenient to realize, convenient to popularize and wider in application range.
Example two
Fig. 2 is a second flowchart of a method for manufacturing a snapshot chain according to an embodiment of the present application. Further optimization and expansion based on the above technical solution can be combined with the above various alternative embodiments. As shown in fig. 2, the method for making the snapshot chain may include the following steps:
s201, receiving a current instruction for making a snapshot of the virtual machine.
S202, responding to a current instruction for making a snapshot of the virtual machine, and storing incremental data of a current system disk of the virtual machine at a current time into a storage service component; and the incremental data of the current system disk at the current time is used as an incremental snapshot to be stored.
S203, obtaining a snapshot chain corresponding to the storage service assembly at the current moment based on the snapshot chain and the incremental snapshot corresponding to the pre-stored storage service assembly at the previous moment; if the number of the increment snapshots of the storage service component at the current time is smaller than the preset value, repeating the operation until the number of the increment snapshots of the storage service component at the current time is equal to the preset value.
S204, if the number of incremental snapshots of the storage service assembly at the current time is equal to a preset value, virtual machine disk data of the storage service assembly at the current time is obtained based on the virtual machine disk data and the incremental data of the storage service assembly at the previous time, which are stored in advance; and the virtual machine disk data of the storage service assembly at the current time is used as a full snapshot to be stored.
In this step, if the number of incremental snapshots of the storage service component at the current time is equal to a predetermined value, the electronic device may obtain virtual machine disk data of the storage service component at the current time based on virtual machine disk data and incremental data of the storage service component at the previous time, which are stored in advance; and the virtual machine disk data of the storage service assembly at the current time is used as a full snapshot to be stored. Specifically, the electronic device may submit the virtual machine disk data of the storage service component at the current time to the compression disk corresponding to the previous time; then compressing and combining the virtual machine disk data of the storage service assembly at the current time through the corresponding compression disk at the previous time to obtain a compression and combination result of the virtual machine disk data of the storage service assembly at the current time; and creating a new system disk based on the compression and combination result of the virtual machine disk data of the storage service assembly at the current time.
S205, creating a new system disk based on the virtual machine disk data of the storage service component at the current time; and takes the new system disk as the current system disk.
In this step, the electronic device may create a new system disk based on the virtual machine disk data of the storage service component at the current time; and takes the new system disk as the current system disk. Specifically, assume that the interval between two adjacent full snapshots is M; m is a natural number greater than or equal to 1; when the number of incremental snapshots of the storage service assembly at the current time is equal to M, the electronic device can obtain the virtual machine disk data of the storage service assembly at the current time based on the virtual machine disk data at the M-th time and the incremental data at the M+1th time (namely the current time); the virtual machine disk data of the storage service assembly at the current time is used as a full snapshot to be stored; then creating a new system disk based on the virtual machine disk data of the storage service component at the current time; and takes the new system disk as the current system disk.
Fig. 3 is a schematic structural diagram of a disk assembly on a virtual machine physical machine according to an embodiment of the present application. As shown in fig. 3, the disk composition on the virtual machine physical machine includes: system Disk (Disk), compact Disk (Commit-Disk), and Base Disk image (Base image). The full snapshot introduced in the incremental snapshot is that in the current snapshot making process, after all local write IO operations are submitted to a Commit-disk, the Commit-disk is uploaded to Bos storage. The original incremental snapshot is to upload the data in the Disk each time, then to locally compress the Disk to form a Disk of the Disk, and the Disk may have a plurality of disks, because the write operation is not submitted to one Disk after the exception occurs in the process of creating the snapshot, and the write operation is submitted together when the snapshot is needed to be created next time.
In a specific embodiment of the present application, the relationship information of the snapshot chain may be recorded in a snapshots table of the nova-master database, where some image_id may be recorded in the glance, and may also record the actual data address stored in the storage service component Bos. The virtual machine actual disk on the physical machine consists of the following three parts: (1) Base-image, i.e., the Base disk image of the virtual machine; the format is qcow2, which contains the original operating system of the virtual machine and all programs; (2) The Disk is stored in a Disk manufactured based on Base-image every time Disk reading and writing is completed after the virtual machine is built. The virtual machine snapshot is disc data at a certain appointed time point, and the virtual machine snapshot can be manufactured by utilizing the characteristic Copy-On-Write of qcow2 format mirror image (namely, when an object is operated together, only the object is copied to a space of the virtual machine snapshot during writing operation), and the Copy-On-Write characteristic determines that each snapshot On a snapshot chain is incremental and has the characteristic of mutual dependence; (3) When the virtual machine makes a snapshot, the data on the Disk is uploaded to Glance and then stored in Bos as an incremental snapshot. The method and the device can submit the Disk data of the virtual machine after the snapshot is made to the Commit-Disk through the qemu-img Commit operation, wherein the Disk is the record of all IO write operations from creation to snapshot making of the virtual machine, and is the actual full-volume data of the full-volume snapshot.
In summary, virtual Disk data on a physical machine is subjected to qemu-img commit operation once every time a snapshot is made, namely, incremental data is uploaded to Bos through Glance, then the incremental data is submitted to a local Disk for compression and combination, a Disk in a blank qcow2 format is created on the basis of the combined Disk through qemu-img create operation, and the Disk is recorded in the subsequent virtual machine writing operation of the Disk from the moment, and the Disk is the actual data content of the next snapshot. In the whole process, the actual data blocks on the physical machine related to the virtual machine have three parts: a Base-image with an initial operating system; all snapshot data Commit-Disk data before the current snapshot are contained; and recording a new Disk of virtual machine Disk writing operation after taking the snapshot. The Base-image in the three parts of data is fixed; the Disk is the latest recorded data, and Commit-Disk can be submitted when taking a snapshot every time, even if the snapshot is failed this time, the Commit-Disk can be submitted together when taking the next snapshot; this part of data is never lost, it contains all write operation data of virtual machine from creation to last snapshot, and after qemu-img commit operation, this part compresses all operations, its maximum capacity is the size of virtual machine system disk, and is also the key data for restoring virtual machine. Therefore, the record data of the snapshot chain can be adjusted by means of the relation between the physical machine where the virtual machine is located and the local disk, so that the purpose of shortening the snapshot chain is achieved; when the snapshot is made after the specified interval, the local Commit-Disk data is uploaded to Bos, the compressed full-volume snapshot is provided, the Base of the subsequent snapshot is converted into the full-volume snapshot, and the full-volume snapshot has no association relationship with all snapshots before the full-volume snapshot.
In a specific embodiment of the present application, when performing snapshot rollback based on a full snapshot, an electronic device may first obtain a snapshot chain corresponding to a storage service component at a current time; then judging whether the rollback file of the current system disk is matched with the identification of the snapshot chain of the storage service assembly at the current time; if the rollback file of the current system disk matches the identification of the snapshot chain of the storage service component at the current time, the electronic device may create a new system disk based on the rollback file of the current system disk, and use the new system disk as the current system disk.
Further, if the rollback file of the current system disk is not matched with the identification of the snapshot chain of the storage service component at the current moment, the electronic device can download the mirror image data in the corresponding snapshot chain of the storage service component at the current moment to the local; then based on the mirror image data in the corresponding snapshot chain at the present moment of the storage service component downloaded into the local, a new system disk is created, and the new system disk is taken as the present system disk. In other words, when the snapshot rollback is performed, only a plurality of related snapshots between the snapshots are downloaded to be operated, so that the time for downloading the whole link is saved, and the range of the integrity and the correctness of the snapshot link data is reduced to be within a plurality of snapshot ranges.
In a specific embodiment of the present application, when performing snapshot deletion based on a full snapshot, an electronic device may first obtain a snapshot chain of a storage service component at a current time; then, a snapshot is extracted from a snapshot chain of the storage service assembly at the current moment in sequence from bottom to top to serve as a current snapshot; if the current snapshot is a full snapshot, the electronic device may perform an operation of actually deleting the current snapshot and the snapshots below the current snapshot; if the current snapshot is an incremental snapshot, the electronic device may perform the operation of performing a false deletion of the current snapshot and snapshots below the current snapshot. That is, after the application introduces the full snapshot of the interval, the deletion flow can be adjusted as follows: all snapshots preceding the full snapshot, whether incremental or full, can be released at once as long as they are deleted by the user without fear of whether operations requiring deletion of data Commit onto the previous snapshot are performed correctly to ensure the integrity of the snapshot chain.
The technical scheme that this application provided can bring following beneficial effect at least: 1. the strong dependence among the snapshots on the snapshot chain is greatly weakened, the integrity and the correctness of the snapshot chain are reduced to the integrity and the correctness of the maximum n snapshots, and the longer the snapshot chain is, the more the advantages of the scheme can be embodied; 2. the virtual machine operation time length for creating the mirror image through the snapshot and rolling back the snapshot is greatly shortened, the time consumption depends on the length of the chain, and the longer the chain, the shorter the time consumption of the modified scheme, the more obvious the effect. 3. The snapshot data originally stored on Bos is truly released after a user initiates a snapshot deleting request, so that the storage space of the snapshot on Bos is reduced, and the longer the chain is, the more obvious the effect is; 4. when the physical machine of the virtual machine fails, the system disk data of the virtual machine can be quickly restored through the shortened snapshot chain, so that the data is ensured not to be lost; 5. the data restorability of the Pass database service deployed on the local system disk virtual machine is ensured.
The method for manufacturing the snapshot chain firstly receives a current instruction for manufacturing the virtual machine snapshot; then responding to the current instruction for making the snapshot of the virtual machine, and storing the incremental data of the current system disk of the virtual machine at the current time into a storage service component; the incremental data of the current system disk at the current time is used as an incremental snapshot to be stored; based on the virtual machine disk data and the incremental data of the pre-stored storage service assembly at the previous moment, obtaining a snapshot chain corresponding to the storage service assembly at the current moment; if the number of the increment snapshots of the storage service component at the current time is smaller than the preset value, repeating the operation until the number of the increment snapshots of the storage service component at the current time is equal to the preset value. That is, in the snapshot chain with strong dependency relationship, the method and the device are used for inputting full snapshots at specified intervals to weaken the association relationship; that is, in the original all-incremental snapshot chain, a full snapshot is created at a specified length, so that the subsequent specified number of snapshots of the full snapshot are all incremental snapshots based thereon. Only the snapshots between two full snapshots have strong dependency, so that the strong dependency range can be greatly reduced, the growing range of the related snapshots is limited only in a fixed interval, and the shortening of a snapshot chain can be realized. In the existing snapshot chain manufacturing method, snapshots on the snapshot chain have strong dependency on each other, and when the snapshot chain is too long, the integrity and the correctness of the snapshots are not guaranteed. Because the method adopts the technical means of reducing the strong dependency range so that the growth range of the related snapshot is only limited in a fixed interval, the problem that the snapshots on the snapshot chain have strong dependency on each other due to the conventional snapshot chain service design is overcome, and when the snapshot chain is overlong, the integrity and the correctness of the snapshot are not ensured; when a mirror image is created or snapshot operation is rolled back through the snapshot, the phenomenon that the operation flow takes too long and finally the technical problem of technical problem that the operation flow is not necessarily successful occurs, and the technical scheme provided by the application can greatly weaken the strong dependency relationship between the snapshots on the snapshot chain, so that the integrity and the correctness of the snapshot chain can be greatly improved, and various overtime and error problems frequently occurring due to overlong links are reduced; in addition, the technical scheme of the embodiment of the application is simple and convenient to realize, convenient to popularize and wider in application range.
Example III
Fig. 4 is a schematic structural diagram of a device for making a snapshot chain according to an embodiment of the present application. As shown in fig. 4, the apparatus 400 includes: a receiving module 401, a storing module 402 and a making module 403; wherein, the liquid crystal display device comprises a liquid crystal display device,
the receiving module 401 is configured to receive a current instruction for making a snapshot of the virtual machine;
the saving module 402 is configured to save incremental data of a current system disk of the virtual machine at a current time to a storage service component in response to the current instruction for making the snapshot of the virtual machine; the incremental data of the current system disk at the current time is used as an incremental snapshot to be stored;
the making module 403 is configured to obtain a snapshot chain corresponding to the storage service component at a current moment based on a snapshot chain corresponding to the storage service component at a previous moment and the incremental snapshot stored in advance; and if the number of the increment snapshots of the storage service component at the current time is smaller than a preset value, repeating the operation until the number of the increment snapshots of the storage service component at the current time is equal to the preset value.
Further, the making module 403 is further configured to obtain virtual machine disk data of the storage service component at the current time based on the virtual machine disk data of the storage service component at the previous time and the incremental data stored in advance if the number of incremental snapshots of the storage service component at the current time is equal to the predetermined value; the virtual machine disk data of the storage service assembly at the current time is used as a full snapshot to be stored; creating a new system disk based on the virtual machine disk data of the storage service component at the current time; and taking the new system disk as the current system disk.
Further, the making module 403 is specifically configured to submit the virtual machine disk data of the storage service component at the current time to the compression disk corresponding to the previous time; compressing and combining the virtual machine disk data of the storage service assembly at the current time through the compression disk corresponding to the previous time to obtain a compression and combination result of the virtual machine disk data of the storage service assembly at the current time; and creating the new system disk based on the compression and combination result of the virtual machine disk data of the storage service component at the current time.
Further, the device further comprises: a rollback module 404 (not shown in the figure) configured to obtain a snapshot chain corresponding to the storage service component at the current time when performing snapshot rollback based on the full snapshot; judging whether the rollback file of the current system disk is matched with the identification of the snapshot chain of the storage service assembly at the current time; if the rollback file of the current system disk is matched with the identification of the snapshot chain of the storage service component at the current time, a new system disk is created based on the rollback file of the current system disk, and the new system disk is used as the current system disk.
Further, the rollback module 404 is further configured to download mirror image data in a snapshot chain corresponding to the current time of the storage service component to a local location if a rollback file of the current system disk is not matched with an identifier of the snapshot chain of the storage service component at the current time; creating a new system disk based on the mirror image data in the snapshot chain corresponding to the storage service component at the current moment in the local storage service component, and taking the new system disk as the current system disk.
Further, the device further comprises: a deletion module 405 (not shown in the figure) configured to obtain a snapshot chain of the storage service component at the current time when performing snapshot deletion based on the full snapshot; extracting a snapshot from a snapshot chain of the storage service assembly at the current time according to the sequence from bottom to top to serve as a current snapshot; if the current snapshot is the full snapshot, executing the operation of deleting the current snapshot and the snapshots below the current snapshot; and if the current snapshot is the incremental snapshot, executing the operation of performing false deletion on the current snapshot and the snapshots below the current snapshot.
The device for manufacturing the snapshot chain can execute the method provided by any embodiment of the application, and has the corresponding functional modules and beneficial effects of executing the method. Technical details not described in detail in this embodiment may be referred to the method for manufacturing the snapshot chain provided in any embodiment of the present application.
Example IV
According to embodiments of the present disclosure, the present disclosure also provides an electronic device, a readable storage medium and a computer program product.
Fig. 5 illustrates a schematic block diagram of an example electronic device 500 that may be used to implement embodiments of the present disclosure. Electronic devices are intended to represent various forms of digital computers, such as laptops, desktops, workstations, personal digital assistants, servers, blade servers, mainframes, and other appropriate computers. The electronic device may also represent various forms of mobile devices, such as personal digital processing, cellular telephones, smartphones, wearable devices, and other similar computing devices. The components shown herein, their connections and relationships, and their functions, are meant to be exemplary only, and are not meant to limit implementations of the disclosure described and/or claimed herein.
As shown in fig. 5, the apparatus 500 includes a computing unit 501 that can perform various suitable actions and processes according to a computer program stored in a Read Only Memory (ROM) 502 or a computer program loaded from a storage unit 508 into a Random Access Memory (RAM) 503. In the RAM 503, various programs and data required for the operation of the device 500 can also be stored. The computing unit 501, ROM 502, and RAM 503 are connected to each other by a bus 504. An input/output (I/O) interface 505 is also connected to bus 504.
Various components in the device 500 are connected to the I/O interface 505, including: an input unit 506 such as a keyboard, a mouse, etc.; an output unit 507 such as various types of displays, speakers, and the like; a storage unit 508 such as a magnetic disk, an optical disk, or the like; and a communication unit 509 such as a network card, modem, wireless communication transceiver, etc. The communication unit 509 allows the device 500 to exchange information/data with other devices via a computer network such as the internet and/or various telecommunication networks.
The computing unit 501 may be a variety of general and/or special purpose processing components having processing and computing capabilities. Some examples of computing unit 501 include, but are not limited to, a Central Processing Unit (CPU), a Graphics Processing Unit (GPU), various specialized Artificial Intelligence (AI) computing chips, various computing units running machine learning model algorithms, a Digital Signal Processor (DSP), and any suitable processor, controller, microcontroller, etc. The computing unit 501 performs the various methods and processes described above, such as the method of making a snapshot chain. For example, in some embodiments, the method of making a snapshot chain may be implemented as a computer software program tangibly embodied on a machine-readable medium, such as storage unit 508. In some embodiments, part or all of the computer program may be loaded and/or installed onto the device 500 via the ROM 502 and/or the communication unit 509. When the computer program is loaded into RAM 503 and executed by computing unit 501, one or more steps of the method of making a snapshot chain described above may be performed. Alternatively, in other embodiments, the computing unit 501 may be configured to perform the method of making the snapshot chain in any other suitable manner (e.g., by means of firmware).
Various implementations of the systems and techniques described here above may be implemented in digital electronic circuitry, integrated circuit systems, field Programmable Gate Arrays (FPGAs), application Specific Integrated Circuits (ASICs), application Specific Standard Products (ASSPs), systems On Chip (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and/or combinations thereof. These various embodiments may include: implemented in one or more computer programs, the one or more computer programs may be executed and/or interpreted on a programmable system including at least one programmable processor, which may be a special purpose or general-purpose programmable processor, that may receive data and instructions from, and transmit data and instructions to, a storage system, at least one input device, and at least one output device.
Program code for carrying out methods of the present disclosure may be written in any combination of one or more programming languages. These program code may be provided to a processor or controller of a general purpose computer, special purpose computer, or other programmable data processing apparatus such that the program code, when executed by the processor or controller, causes the functions/operations specified in the flowchart and/or block diagram to be implemented. The program code may execute entirely on the machine, partly on the machine, as a stand-alone software package, partly on the machine and partly on a remote machine or entirely on the remote machine or server.
In the context of this disclosure, a machine-readable medium may be a tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. The machine-readable medium may be a machine-readable signal medium or a machine-readable storage medium. The machine-readable medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. More specific examples of a machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
To provide for interaction with a user, the systems and techniques described here can be implemented on a computer having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to a user; and a keyboard and pointing device (e.g., a mouse or trackball) by which a user can provide input to the computer. Other kinds of devices may also be used to provide for interaction with a user; for example, feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form, including acoustic input, speech input, or tactile input.
The systems and techniques described here can be implemented in a computing system that includes a background component (e.g., as a data server), or that includes a middleware component (e.g., an application server), or that includes a front-end component (e.g., a user computer having a graphical user interface or a web browser through which a user can interact with an implementation of the systems and techniques described here), or any combination of such background, middleware, or front-end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: local Area Networks (LANs), wide Area Networks (WANs), blockchain networks, and the internet.
The computer system may include a client and a server. The client and server are typically remote from each other and typically interact through a communication network. The relationship of client and server arises by virtue of computer programs running on the respective computers and having a client-server relationship to each other. The server can be a cloud server, also called a cloud computing server or a cloud host, and is a host product in a cloud computing service system, so that the defects of high management difficulty and weak service expansibility in the traditional physical hosts and VPS service are overcome.
It should be appreciated that various forms of the flows shown above may be used to reorder, add, or delete steps. For example, the steps recited in the present disclosure may be performed in parallel or sequentially or in a different order, provided that the desired results of the technical solutions of the present disclosure are achieved, and are not limited herein.
The above detailed description should not be taken as limiting the scope of the present disclosure. It will be apparent to those skilled in the art that various modifications, combinations, sub-combinations and alternatives are possible, depending on design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present disclosure are intended to be included within the scope of the present disclosure.
Claims (12)
1. A method of making a snapshot chain, the method comprising:
receiving a current instruction for making a snapshot of the virtual machine;
responding to the current instruction for making the snapshot of the virtual machine, and storing the incremental data of the current system disk of the virtual machine at the current time into a storage service component; the incremental data of the current system disk at the current time is used as an incremental snapshot to be stored;
based on a snapshot chain and the incremental snapshot which are stored in advance and correspond to the storage service assembly at the previous moment, obtaining a snapshot chain corresponding to the storage service assembly at the current moment; if the number of the increment snapshots of the storage service assembly at the current time is smaller than a preset value, repeating the operation until the number of the increment snapshots of the storage service assembly at the current time is equal to the preset value;
Based on the virtual machine disk data of the storage service assembly at the previous moment and the incremental data, virtual machine disk data of the storage service assembly at the current moment is obtained; submitting the virtual machine disk data of the storage service assembly at the current time to a compression disk corresponding to the previous time; compressing and combining the virtual machine disk data of the storage service assembly at the current time through the compression disk corresponding to the previous time to obtain a compression and combination result of the virtual machine disk data of the storage service assembly at the current time; creating a new system disk based on the compression and combination result of the virtual machine disk data of the storage service component at the current time; and taking the new system disk as the current system disk; the disk composition of the virtual machine comprises: system disk, compact disk, and base disk mirror.
2. The method of claim 1, the method further comprising:
and storing the virtual machine disk data of the storage service assembly at the current time as a full snapshot.
3. The method of claim 2, the method further comprising:
When the snapshot rollback is performed based on the full snapshot, a snapshot chain corresponding to the storage service component at the current moment is obtained;
judging whether the rollback file of the current system disk is matched with the identification of the snapshot chain of the storage service assembly at the current time;
if the rollback file of the current system disk is matched with the identification of the snapshot chain of the storage service component at the current time, a new system disk is created based on the rollback file of the current system disk, and the new system disk is used as the current system disk.
4. A method according to claim 3, the method further comprising:
if the rollback file of the current system disk is not matched with the identification of the snapshot chain of the storage service component at the current time, downloading the mirror image data in the corresponding snapshot chain of the storage service component at the current time to the local;
creating a new system disk based on the mirror image data in the snapshot chain corresponding to the storage service component at the current moment in the local storage service component, and taking the new system disk as the current system disk.
5. The method of claim 2, the method further comprising:
When the snapshot deletion is performed based on the full snapshot, a snapshot chain of the storage service component at the current time is obtained;
extracting a snapshot from a snapshot chain of the storage service assembly at the current time according to the sequence from bottom to top to serve as a current snapshot;
if the current snapshot is the full snapshot, executing the operation of deleting the current snapshot and the snapshots below the current snapshot; and if the current snapshot is the incremental snapshot, executing the operation of performing false deletion on the current snapshot and the snapshots below the current snapshot.
6. An apparatus for producing a snapshot chain, the apparatus comprising: the device comprises a receiving module, a storage module and a manufacturing module; wherein, the liquid crystal display device comprises a liquid crystal display device,
the receiving module is used for receiving a current instruction for making the virtual machine snapshot;
the storage module is used for responding to the current instruction for making the snapshot of the virtual machine and storing the incremental data of the current system disk of the virtual machine at the current moment into the storage service component; the incremental data of the current system disk at the current time is used as an incremental snapshot to be stored;
the making module is used for obtaining a snapshot chain corresponding to the storage service assembly at the current moment based on a snapshot chain corresponding to the storage service assembly at the previous moment and the incremental snapshot which are stored in advance; if the number of the increment snapshots of the storage service assembly at the current time is smaller than a preset value, repeating the operation until the number of the increment snapshots of the storage service assembly at the current time is equal to the preset value; based on the virtual machine disk data of the storage service assembly at the previous moment and the incremental data, virtual machine disk data of the storage service assembly at the current moment is obtained; submitting the virtual machine disk data of the storage service assembly at the current time to a compression disk corresponding to the previous time; compressing and combining the virtual machine disk data of the storage service assembly at the current time through the compression disk corresponding to the previous time to obtain a compression and combination result of the virtual machine disk data of the storage service assembly at the current time; creating a new system disk based on the compression and combination result of the virtual machine disk data of the storage service component at the current time; and taking the new system disk as the current system disk; the disk composition of the virtual machine comprises: system disk, compact disk, and base disk mirror.
7. The apparatus of claim 6, the authoring module further configured to save virtual machine disk data of the storage service component at the current time instance as a full snapshot.
8. The apparatus of claim 7, the apparatus further comprising: the rollback module is used for acquiring a snapshot chain corresponding to the storage service component at the current moment when the snapshot rollback is performed based on the full snapshot; judging whether the rollback file of the current system disk is matched with the identification of the snapshot chain of the storage service assembly at the current time; if the rollback file of the current system disk is matched with the identification of the snapshot chain of the storage service component at the current time, a new system disk is created based on the rollback file of the current system disk, and the new system disk is used as the current system disk.
9. The apparatus of claim 8, the rollback module further configured to download mirror data in a corresponding snapshot chain of the storage service component at the current time to a local location if a rollback file of the current system disk does not match an identification of the snapshot chain of the storage service component at the current time; creating a new system disk based on the mirror image data in the snapshot chain corresponding to the storage service component at the current moment in the local storage service component, and taking the new system disk as the current system disk.
10. The apparatus of claim 7, the apparatus further comprising: the deleting module is used for acquiring a snapshot chain of the storage service component at the current moment when the snapshot is deleted based on the full snapshot; extracting a snapshot from a snapshot chain of the storage service assembly at the current time according to the sequence from bottom to top to serve as a current snapshot; if the current snapshot is the full snapshot, executing the operation of deleting the current snapshot and the snapshots below the current snapshot; and if the current snapshot is the incremental snapshot, executing the operation of performing false deletion on the current snapshot and the snapshots below the current snapshot.
11. An electronic device, comprising:
at least one processor; and
a memory communicatively coupled to the at least one processor; wherein, the liquid crystal display device comprises a liquid crystal display device,
the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the method of any one of claims 1-5.
12. A non-transitory computer readable storage medium storing computer instructions for causing the computer to perform the method of any one of claims 1-5.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106648987A (en) * | 2016-12-27 | 2017-05-10 | 江苏爱科赛尔云数据科技有限公司 | Virtual machine increment backup and recovery method capable of keeping user snapshot setting total |
| CN107092538A (en) * | 2017-03-14 | 2017-08-25 | 平安科技（深圳）有限公司 | Virtual-machine data backup method and system |
| CN107943557A (en) * | 2017-11-18 | 2018-04-20 | 浙江网新恒天软件有限公司 | A kind of magnetic disk of virtual machine incremental snapshot method based on cloud platform |
| CN110597661A (en) * | 2019-09-11 | 2019-12-20 | 苏州浪潮智能科技有限公司 | Virtual machine backup method and device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8495316B2 (en) * | 2008-08-25 | 2013-07-23 | Symantec Operating Corporation | Efficient management of archival images of virtual machines having incremental snapshots |
| US9116726B2 (en) * | 2012-09-28 | 2015-08-25 | Vmware, Inc. | Virtual disk snapshot consolidation using block merge |
-
2021
- 2021-02-04 CN CN202110157094.3A patent/CN112860376B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106648987A (en) * | 2016-12-27 | 2017-05-10 | 江苏爱科赛尔云数据科技有限公司 | Virtual machine increment backup and recovery method capable of keeping user snapshot setting total |
| CN107092538A (en) * | 2017-03-14 | 2017-08-25 | 平安科技（深圳）有限公司 | Virtual-machine data backup method and system |
| CN107943557A (en) * | 2017-11-18 | 2018-04-20 | 浙江网新恒天软件有限公司 | A kind of magnetic disk of virtual machine incremental snapshot method based on cloud platform |
| CN110597661A (en) * | 2019-09-11 | 2019-12-20 | 苏州浪潮智能科技有限公司 | Virtual machine backup method and device |
Non-Patent Citations (1)
| Title |
|---|
| 基于HR-树扩展的时空索引机制研究;尹章才;李霖;王;;武汉大学学报(信息科学版)(12);全文 * |
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