CN116185720A - Virtual machine backup and recovery method based on vSAN super-fusion virtualization platform - Google Patents

Virtual machine backup and recovery method based on vSAN super-fusion virtualization platform Download PDF

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CN116185720A
CN116185720A CN202310254828.9A CN202310254828A CN116185720A CN 116185720 A CN116185720 A CN 116185720A CN 202310254828 A CN202310254828 A CN 202310254828A CN 116185720 A CN116185720 A CN 116185720A
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backup
disk
virtual machine
snapshot
restored
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请求不公布姓名
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Anchao Cloud Software Co Ltd
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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
    • G06F11/1446—Point-in-time backing up or restoration of persistent data
    • G06F11/1448—Management of the data involved in backup or backup restore
    • 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
    • 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
    • G06F2009/45575—Starting, stopping, suspending or resuming virtual machine instances
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management

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Abstract

The invention discloses a virtual machine backup and recovery method based on a vSAN super-fusion virtualization platform, which comprises the following steps: on a vSAN super-fusion virtualization platform, acquiring an original virtual machine to be backed up and disk information thereof, and calling a storage interface to create a disk snapshot; adding a snapshot disk corresponding to the disk snapshot to a backup proxy virtual machine, and recording information of the snapshot disk to the backup proxy virtual machine; and backing up the snapshot disk to a backup server, generating a backup point and storing the backup point. The method can break through the limit of the concurrency number and the speed limit of manufacturers during backup recovery, and effectively improves the backup recovery rate.

Description

Virtual machine backup and recovery method based on vSAN super-fusion virtualization platform
Technical Field
The invention relates to the field of electronic communication, in particular to a virtual machine backup and recovery method based on a vSAN super-fusion virtualization platform.
Background
In the prior art, virtual machine backup is generally divided into two schemes, namely agent backup and non-agent backup. The disadvantage of the agentless approach is that it is too dependent on solutions offered by the virtualization vendors, such as the VADP approach of VMware. The agent backup is divided into two cases, namely, an agent is installed in each virtual machine, when the number of virtual machines needing to be backed up is large, the workload of installing the agent is also large, the backup needs to keep the starting state of the virtual machine, and when the virtual machines are closed, the agent cannot work normally. Secondly, agents are deployed in a host, so that clients generally have cautious deployment modes for security and robustness, and market acceptance is not high.
For the virtual machine recovery technology, the general backup manufacturers adopt a complete machine recovery mode, and some backup manufacturers provide fine-grained recovery. The fine-grained recovery refers to recovering part of files in the virtual machine under the condition that the virtual machine is not recovered wholly, and the recovery is realized by analyzing the file system of the disk. However, when the virtual machine has the conditions of LVM and the like, the backup program cannot sense the proportioning condition of the LVM because the single disk does not contain a finished file system, so that fine granularity recovery cannot be achieved.
For VADP schemes like that provided by VMware, virtualization vendors typically have limitations on the number and rate of concurrency. If the speed of a single backup is limited to the interval of 30-60MB/s, and the upper limit of tasks that a single esxi node supports backup, restore, snapshot, migration or cloning is not more than 11, the different versions are slightly different, typically between 8 and 11. In addition, the non-proxy backup mode cannot sense the condition inside the virtual machine, and if the condition of disk configuration such as LVM is met, fine granularity recovery cannot be performed.
For the scheme with proxy backup, if the proxy is deployed in the virtual machine, the defect of workload is too obvious; if the agent is deployed in the host, there are too many security risks.
In the background of the prior art, for a vand-based, agentless backup solution for Vmware virtual machine backup restoration, the backup program must be deployed on a standard x86 server. The method has no compatibility with some domestic platforms or servers of ARM architecture, and limits the ecology of domestic platform software.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person of ordinary skill in the art.
Disclosure of Invention
The invention aims to provide a virtual machine backup and recovery method based on a vSAN super-fusion virtualization platform, which can break through the limit of the concurrency number and speed limit of manufacturers during backup and recovery and effectively improve the backup and recovery rate.
In order to achieve the above purpose, the embodiment of the present invention provides a virtual machine backup and recovery method based on a vSAN super fusion virtualization platform.
In one or more embodiments of the invention, the method comprises: on a vSAN super-fusion virtualization platform, acquiring an original virtual machine to be backed up and disk information thereof, and calling a storage interface to create a disk snapshot; adding a snapshot disk corresponding to the disk snapshot to a backup proxy virtual machine, and recording information of the snapshot disk to the backup proxy virtual machine; and backing up the snapshot disk to a backup server, generating a backup point and storing the backup point.
In one or more embodiments of the present invention, backing up the snapshot disk to a backup server, generating and saving a backup point, including: when full-volume backup is performed, the backup server receives the information and the effective data of the snapshot disks sent by the backup proxy virtual machine, creates a volume file with the same specification for each disk to be backed up, and writes the effective data into the corresponding volume file; after the full-volume backup is completed, the backup server makes consistent snapshots of all the volume files, and the consistent snapshots are stored as full-volume backup points.
In one or more embodiments of the present invention, backing up the snapshot disk to a backup server, generating a backup point and saving, and further including: when in incremental backup, the backup server receives the information and the effective data of the snapshot disk sent by the backup proxy virtual machine, acquires a last backup volume file, and writes the effective data into the volume file; after the incremental backup is completed, the backup server makes consistent snapshots of all the volume files, saves the consistent snapshots as incremental backup points, and deletes the snapshot disk of the last backup.
In one or more embodiments of the present invention, the backup server receives information and valid data of the snapshot disk sent by the backup proxy virtual machine, including: and when the full-volume backup is performed, filtering hole data in the data to be backed up, obtaining effective data and sending the effective data to the backup server.
In one or more embodiments of the present invention, the backup server receives information and valid data of the snapshot disk sent by the backup proxy virtual machine, including: and in the incremental backup, comparing the data to be backed up with the data in the snapshot disk created in the last backup, obtaining effective data and sending the effective data to the backup server.
In one aspect of the present invention, the embodiment of the present invention further provides a method for restoring a virtual machine backup.
In one or more embodiments of the present invention, the recovery method includes: the virtual machine backup method is adopted to carry out pre-backup; selecting a backup point to be restored, and creating a target virtual machine with the same disk specification as the original virtual machine according to the information of the backup point; separating a disk to be restored from the target virtual machine, and adding the disk to be restored to the backup proxy virtual machine; according to the information of the backup point, pairing information of the disk to be restored and the snapshot disk in the backup point is obtained, and the effective data of the snapshot disk obtained by the backup server from the corresponding snapshot is transmitted to the backup proxy virtual machine; and after the backup proxy virtual machine writes the effective data into the disk to be restored, separating the disk to be restored from the backup proxy virtual machine, and re-adding the disk to the target virtual machine, wherein the effective data is written into the disk to be restored without using a VADP interface.
In one or more embodiments of the present invention, the recovery method includes: the virtual machine backup method is adopted to carry out pre-backup; selecting a backup point to be restored, cleaning a disk snapshot of the original virtual machine, separating the disk to be restored from the original virtual machine, and adding the disk to be restored to the backup proxy virtual machine; according to the information of the backup point, pairing information of the disk to be restored and the snapshot disk in the backup point is obtained, and the effective data of the snapshot disk obtained by the backup server from the corresponding snapshot is transmitted to the backup proxy virtual machine; and after the backup proxy virtual machine writes the effective data into the disk to be restored, separating the disk to be restored from the backup proxy virtual machine, and re-adding the disk to the original virtual machine, wherein the VADP interface is not used by the disk to be restored when the effective data is written into the disk to be restored.
In one or more embodiments of the present invention, the recovery method includes: the virtual machine backup method is adopted to carry out pre-backup; selecting a backup point to be restored, and creating a shared directory in a storage pool of the backup server; obtaining information of a snapshot disk from the backup point, cloning the disk to be restored into the shared directory, and setting the shared directory as an NFS shared directory; creating an NFS storage on a vCenter through the shared directory, and adding the disk to be restored in the NFS storage to the backup proxy virtual machine; creating a local directory on the backup proxy virtual machine, obtaining information of the disk to be restored, and mounting the disk to be restored on the local directory; and enabling FTP or NAS service in the backup server, and sharing the local directory in the mode of FTP or NAS service.
In one or more embodiments of the invention, the method further comprises: after the use of the local directory is completed, performing resource recovery, stopping FTP or NAS service by the backup proxy virtual machine, deleting the corresponding disk from the backup proxy virtual machine, and removing the NFS storage; and destroying the clone disk of the backup server and deleting the shared directory.
In another aspect of the present invention, an apparatus for virtual machine backup based on a vSAN hyper-fusion virtualization platform is provided, which includes a snapshot creation module, a disk addition module, and a disk backup module.
And the snapshot creation module is used for acquiring the original virtual machine to be backed up and the disk information thereof on the vSAN super-fusion virtualization platform, and calling the storage interface to create the disk snapshot.
And the disk adding module is used for adding the snapshot disk corresponding to the disk snapshot to the backup proxy virtual machine and recording the information of the snapshot disk to the backup proxy virtual machine.
And the disk backup module is used for backing up the snapshot disk to a backup server, generating a backup point and storing the backup point.
In one or more embodiments of the present invention, the disk backup module is further configured to: when full-volume backup is performed, the backup server receives the information and the effective data of the snapshot disks sent by the backup proxy virtual machine, creates a volume file with the same specification for each disk to be backed up, and writes the effective data into the corresponding volume file; after the full-volume backup is completed, the backup server makes consistent snapshots of all the volume files, and the consistent snapshots are stored as full-volume backup points.
In one or more embodiments of the present invention, the disk backup module is further configured to: when in incremental backup, the backup server receives the information and the effective data of the snapshot disk sent by the backup proxy virtual machine, acquires a last backup volume file, and writes the effective data into the volume file; after the incremental backup is completed, the backup server makes consistent snapshots of all the volume files, saves the consistent snapshots as incremental backup points, and deletes the snapshot disk of the last backup.
In one or more embodiments of the present invention, the disk backup module is further configured to: and when the full-volume backup is performed, filtering hole data in the data to be backed up, obtaining effective data and sending the effective data to the backup server.
In one or more embodiments of the present invention, the disk backup module is further configured to: and in the incremental backup, comparing the data to be backed up with the data in the snapshot disk created in the last backup, obtaining effective data and sending the effective data to the backup server.
In one or more embodiments of the present invention, a recovery apparatus for virtual machine backup is provided, which includes a virtual machine creation module, a disk separation module, an information acquisition module, and a disk recovery module.
The virtual machine creation module is used for selecting backup points to be restored and creating a target virtual machine with the same disk specification as the original virtual machine according to the information of the backup points.
And the disk separation module is used for separating the disk to be restored from the target virtual machine and adding the disk to be restored to the backup proxy virtual machine.
And the information acquisition module is used for acquiring the pairing information of the disk to be restored and the snapshot disk in the backup point according to the information of the backup point, and transmitting the effective data of the snapshot disk acquired by the backup server from the corresponding snapshot to the backup proxy virtual machine.
And the disk recovery module is used for separating the disk to be recovered from the backup proxy virtual machine and re-adding the disk to be recovered to the target virtual machine after the backup proxy virtual machine writes the effective data into the disk to be recovered.
In one or more embodiments of the invention, the apparatus further comprises: the virtual machine cleaning module is used for selecting backup points to be restored, cleaning disk snapshots of the original virtual machine, separating the disks to be restored from the original virtual machine, and adding the disks to be restored to the backup proxy virtual machine.
In another aspect of the present invention, there is provided an electronic device including: at least one processor; and a memory storing instructions that, when executed by the at least one processor, cause the at least one processor to perform the method of virtual machine backup and restore based on the vSAN hyper-fusion virtualization platform as described above.
In another aspect of the present invention, there is provided a computer readable storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of a method of virtual machine backup and restore based on a vSAN hyper-fusion virtualization platform as described.
Compared with the prior art, the virtual machine backup and recovery method based on the vSAN super-fusion virtualization platform can acquire LVM composition information of a disk by deploying the backup agent virtual machine on the vSAN super-fusion virtualization platform, and directly identify the original-format volume file, the LVM composition information and the like during fine-granularity recovery; the concurrent backup recovery can break through the limitation of the concurrent number and speed limit of a virtualization manufacturer; the disk to be backed up is added to the backup proxy virtual machine, and the storage network is used for data transmission, so that the speed of backup recovery can be obviously improved, and the load of the management network can be effectively reduced; the method can support the domestic platform to deploy backup recovery software to perform the backup recovery of VMware.
Drawings
FIG. 1 is a flow chart of a method for virtual machine backup based on a vSAN super fusion virtualization platform according to one embodiment of the present invention;
FIG. 2 is a system architecture diagram of a method for virtual machine backup based on a vSAN super fusion virtualization platform according to one embodiment of the present invention;
FIG. 3 is a particular flow diagram of a method for virtual machine backup based on a vSAN super fusion virtualization platform according to one embodiment of the present invention;
FIG. 4 is a schematic diagram of backup points of a method for virtual machine backup based on a vSAN super-fusion virtualization platform according to an embodiment of the present invention;
FIG. 5 is a flow chart of a method of restoring a virtual machine backup according to an embodiment of the invention;
FIG. 6 is a specific flow diagram of a method for restoring a virtual machine backup according to an embodiment of the invention;
FIG. 7 is a flow chart of a method of restoring a virtual machine backup according to an embodiment of the invention;
FIG. 8 is a flow chart of a method of restoring a virtual machine backup according to an embodiment of the invention;
FIG. 9 is a specific flow diagram of a method for restoring a virtual machine backup according to an embodiment of the invention;
FIG. 10 is a resource reclamation flow chart of a method of restoring virtual machine backup in accordance with an embodiment of the present invention;
FIG. 11 is a block diagram of an apparatus for virtual machine backup based on a vSAN super fusion virtualization platform according to one embodiment of the present invention;
FIG. 12 is a block diagram of a virtual machine backup restoration apparatus according to an embodiment of the present invention;
FIG. 13 is a hardware block diagram of a computing device for virtual machine backup and restore based on a vSAN hyper-fusion virtualization platform according to an embodiment of the present invention.
Detailed Description
The following detailed description of embodiments of the invention is, therefore, to be taken in conjunction with the accompanying drawings, and it is to be understood that the scope of the invention is not limited to the specific embodiments.
Throughout the specification and claims, unless explicitly stated otherwise, the term "comprise" or variations thereof such as "comprises" or "comprising", etc. will be understood to include the stated element or component without excluding other elements or components.
The following describes in detail the technical solutions provided by the embodiments of the present invention with reference to the accompanying drawings.
Example 1
Referring to fig. 1 to 4, a method for virtual machine backup based on a vSAN super fusion virtualization platform according to an embodiment of the present invention is described, and includes the following steps.
In step S101, on the vSAN super fusion virtualization platform, the original virtual machine to be backed up and disk information thereof are acquired, and a storage interface is called to create a disk snapshot.
A vSAN is a virtualization technology used on SAN switches that enables one physical switch to be virtualized into multiple logical switches, typically a distributed storage architecture that is developed and scalable based on a vSphere kernel.
In this embodiment, pre-preparation of operations is performed on the vSAN superset virtualization platform. Preparing a backup server, and configuring and communicating a backup server network and a vSAN super-fusion virtualization cluster, wherein the network comprises a management network and a storage network. The backup agent virtual machine is deployed on the vSAN super fusion virtualized cluster and the network thereof is configured. And setting a backup target, a backup strategy and the like of the virtual machine on a management page of the backup server. Wherein the backup proxy virtual machine refers to a virtual machine in which a proxy program is deployed, and the proxy program is deployed in each virtual machine to be backed up independently of a traditional manufacturer.
The original virtual machine to be backed up and the disk information thereof comprise the CPU, the memory condition of the virtual machine, the number of disks and the corresponding preparation size.
As shown in fig. 2, a system framework of this embodiment is shown, where a backup server (backup server) interacts bi-directionally with a vCenter containing esxi1, esxi2, and esxi3, and interacts bi-directionally with a backup proxy virtual machine. esxi refers to the virtualization platform used to create and run virtual machines and virtual devices.
In step S102, a snapshot disk corresponding to the disk snapshot is added to the backup proxy virtual machine, and information of the snapshot disk is recorded to the backup proxy virtual machine.
In this embodiment, the backup proxy virtual machine is typically deployed on a node with relatively abundant resources in the vSAN superset cluster, and when the node is busy, the proxy can be drifted to a relatively less busy computing node for continuous operation through the scheduling policy configured by the superset virtual cluster.
Further, the disk character information displayed on the backup proxy virtual machine by the disk is not necessarily identical to the original virtual machine, so that the corresponding relation information of the disk needs to be recorded on the backup proxy virtual machine.
In step S103, the snapshot disk is backed up to a backup server, and a backup point is generated and stored.
In this embodiment, a full backup and/or an incremental backup may be selected when backing up the snapshot disks to the backup server. Full backup refers to the backup of all data, and incremental backup refers to the backup of the data which changes after the last backup.
Specifically, when full-volume backup is performed, after receiving a backup task request, the backup proxy virtual machine performs task execution, obtains disc information to be backed up, information of a snapshot disc and information of effective data, and sends all the information to a backup server, wherein the backup server creates a volume file with the same specification for each disc to be backed up, and writes the effective data into a corresponding volume file; after the full-volume backup is completed, the backup server makes consistent snapshots of all the volume files, and the consistent snapshots are stored as full-volume backup points.
Further, the hole data in the data to be backed up is filtered, and effective data are obtained and sent to the backup server. In contrast to the official Data Protection scheme VADP (VMware StorageAPIs-Data Protection) scheme, the vSAN superfusion in the present invention generally uses NFS to mount storage to VMware, where the amount of Data backed up is by default thick. In the full-scale backup, if only 5GB is used for a disk of 100GB, and the backup is also 100GB, in the embodiment of the invention, the hole data can be filtered by using the storage snapshot, so that only the required data of 5GB is backed up.
Specifically, during incremental backup, after receiving a backup task request, the backup proxy virtual machine performs task execution, obtains disc information to be backed up, information of a snapshot disc and information of effective data, and sends all the information to a backup server, and the backup server obtains a volume file backed up last time and writes the effective data into a corresponding volume file; after the incremental backup is completed, the backup server makes consistent snapshots of all the volume files, saves the consistent snapshots as incremental backup points, and deletes the snapshot disk of the last backup.
Further, the data to be backed up is compared with the data in the snapshot disk created in the last backup, and effective data is obtained and sent to the backup server.
Wherein, a one-time snapshot refers to supporting a plurality of volume to make snapshots simultaneously for keeping data consistency.
In addition, the choice of full and incremental backups depends on the scheme or general scheme provided by the super-fusion vendor.
Compared with the direct use of the similar VDDK (VMware's Virtual Disk Development Kit, VMware virtual disk development kit) solution, the virtual machine backup solution of the embodiment can obtain LVM composition information of a disk, and the concurrent backup recovery can break through the limitation of similar super-fusion manufacturers. The disk to be backed up is added to the backup proxy virtual machine, which is equivalent to the speed of directly reading the local disk through the storage network, so that the speed of the subsequent backup recovery can be increased, the service network is not occupied, and the service is blocked.
In this embodiment, a virtual machine with a vm-centros 7.6 with three disks is taken as an example, and the virtual machine backup scheme of this embodiment is described in detail.
As shown in fig. 3 to 4, the virtual machine includes a 20G system disk, and an LVM (Logical Volume Manager, logical volume management) formed by two 30G disks.
1) And acquiring the information of the original virtual machine to be backed up through a vsphere interface provided by a virtualization manufacturer. The original virtual machine has three disks, which are respectively marked as volume1 (20 GB), volume2 (30 GB) and volume3 (30 GB).
2) And calling a storage interface, and creating disk snapshots to obtain snapshot disks corresponding to the three disks, namely volume1-snap, volume2-snap and volume3-snap.
3) And sequentially adding the three corresponding snapshot disks to the backup proxy virtual machine, and sequentially executing a lsblk command when the disks are added to obtain that the corresponding snapshot disks are respectively volume1-snap (/ dev/sdd), volume2-snap (/ dev/sdb) and volume3-snap (/ dev/sdc) mapped by the corresponding snapshot disks in the backup proxy virtual machine. In this case, sdb and sdc constitute one LVM, i.e., volume2 and volume3 constitute one LVM.
4) Recording the disc information including LVM composition information, and backing up the disc to a backup server in the original disc format.
For full backup, creating base_volme 1, base_volme 2 and base_volme 3 files with the same specification on a disk to be backed up on a backup server, acquiring data to be backed up by a backup proxy server, writing the data to be backed up into the base_volme 1, base_volme 2 and base_volme 3 files, and after the backup is completed, performing consistent snapshot on the base_volme 1, base_volme 2 and base_volme 3 by the backup server to obtain base_volme 1_sNap1, base_volme 2_sNap1 and base_volme 3_sNap1 as the full backup point for saving;
For incremental backup, the backup server acquires the base_volme 1, base_volme 2 and base_volme 3 files of the last backup, continues to write incremental data into the base_volme 1, base_volme 2 and base_volme 3, and after the backup is completed, the backup server performs consistent snapshot on the base_volme 1, base_volme 2 and base_volme 3 to obtain base_volme 1_snap2, base_volme2_snap2 and base_volme3_snap2 as the current incremental backup points to be stored.
Example 2
The present embodiment adopts the virtual machine backup method described in embodiment 1 to perform the pre-backup.
Referring to fig. 5 to fig. 6, a method for restoring a virtual machine backup according to an embodiment of the present invention is described, and the method includes the following steps.
In step S501, a backup point to be restored is selected, and a target virtual machine with the same disk specification as the original virtual machine is created according to the information of the backup point.
In this embodiment, on a vSAN super-fusion virtualization platform where an original virtual machine is located, a virtual machine with the same disk specification as the original virtual machine is newly created to perform backup recovery, the disk of the newly created virtual machine is initially a blank disk, and backup recovery data is stored on the newly created virtual machine.
In step S502, the disk to be restored is separated from the target virtual machine, and the disk to be restored is added to the backup proxy virtual machine.
In step S503, according to the information of the backup point, pairing information of the to-be-restored disk and the snapshot disk in the backup point is obtained, and the valid data of the snapshot disk obtained by the backup server from the corresponding snapshot is transferred to the backup proxy virtual machine.
Specifically, for full backup, the effective data is data obtained by filtering hole data in the data to be backed up; for incremental backup, the effective data is changed data obtained by comparing the data to be backed up with the data in the snapshot disk created in the last backup.
Furthermore, according to the backup point information, a blank disk of the newly created virtual machine and a snapshot disk stored by the backup point can be matched, and according to the pairing information, effective information can be obtained from the corresponding snapshot disk and transferred.
In step S504, after the backup proxy virtual machine writes the valid data to the disk to be restored, the disk to be restored is separated from the backup proxy virtual machine and is added to the target virtual machine again.
In this embodiment, the backup proxy virtual machine writes data to disk without using VADP scheme, so it is not limited by the concurrency number and speed limit of virtualization manufacturer.
The advantage of this embodiment over the direct use of a similar VADP scheme is that the concurrency limit can be broken through and the rate limit of a single task can be broken through. When operating on a terabyte-based storage network, the continuous data block recovery rate of a single disk can easily exceed 200MB/s.
In this embodiment, a full-scale backup of the virtual machine of embodiment 1 is taken as an example, and the overall restoration scheme of the virtual machine of this embodiment is described in detail.
As shown in fig. 6, the three disk snapshots contained in the full-volume backup point at this time are respectively base_volume1_snap1, base_volume2_snap1, and base_volume3_snap1.
1) A virtual machine re-vm containing disks with the same specification as the original virtual machine is created on the super fusion virtualization platform, and the virtual machine re-vm contains three blank disks which are respectively marked as re-volume1 (20 GB), re-volume2 (30 GB) and re-volume3 (30 GB).
2) After separating the above three blank disks to be restored from the target virtual machine, sequentially adding the disks to the backup proxy virtual machine, and obtaining pairing information re-volume1/base_volume1_snap1, re-volume2/base_volume2_snap1 and re-volume3/base_volume3_snap1 of the disk and the backup point according to the information of the snapshot disk recorded before.
3) The backup server acquires snapshot effective data from the corresponding snapshot base_volume_snap1, transmits the snapshot effective data to the backup proxy virtual machine, and writes the effective data into the corresponding disk by the backup proxy virtual machine, for example, writes the effective data in the base_volume1_snap1 snapshot disk into the corresponding re-volume 1.
4) After the data writing operation is completed, the corresponding three re-volume1, re-volume2 and re-volume3 disks are separated from the backup proxy virtual machine and added into the re-vm of the target virtual machine. At this time, the re-vm virtual machine can be started normally for use.
Example 3
The present embodiment adopts the virtual machine backup method described in embodiment 1 to perform the pre-backup.
As shown in fig. 7, a method for restoring a virtual machine backup in an embodiment of the present invention is described, and another method for restoring a virtual machine based on a complete machine includes the following steps.
In step S701, a backup point to be restored is selected, a disk snapshot of the original virtual machine is cleaned, a disk to be restored is separated from the original virtual machine, and the disk to be restored is added to the backup proxy virtual machine.
In this embodiment, the new virtual machine is not selected to restore and use, but the data restored by backup according to the backup point information is directly stored on the original virtual machine that is originally backed up, and at this time, the snapshot on the original virtual machine is to be emptied.
In step S702, according to the information of the backup point, pairing information of the to-be-restored disk and the snapshot disk in the backup point is obtained, and the valid data of the snapshot disk obtained by the backup server from the corresponding snapshot is transferred to the backup proxy virtual machine.
Specifically, for full backup, the effective data is data obtained by filtering hole data in the data to be backed up; for incremental backup, the effective data is changed data obtained by comparing the data to be backed up with the data in the snapshot disk created in the last backup.
Furthermore, according to the backup point information, a blank disk of the newly created virtual machine and a snapshot disk stored by the backup point can be matched, and according to the pairing information, effective information can be obtained from the corresponding snapshot disk and transferred.
In step S703, after the backup proxy virtual machine writes the valid data to the to-be-restored disk, the to-be-restored disk is separated from the backup proxy virtual machine and is newly added to the original virtual machine, where writing the valid data to the to-be-restored disk does not use a VADP interface.
In this embodiment, the backup proxy virtual machine writes data to disk without using VADP scheme, so it is not limited by the concurrency number and speed limit of virtualization manufacturer.
Example 4
The present embodiment adopts the virtual machine backup method described in embodiment 1 to perform the pre-backup.
As shown in fig. 8 to 10, a method for restoring a virtual machine backup according to an embodiment of the present invention is described, and a method for restoring based on fine granularity includes the following steps.
In step S801, a backup point to be restored is selected, and a shared directory is created in a storage pool of the backup server.
In some situations, if a user wants to acquire a certain file in a certain backup point of the virtual machine, the cost of the user is relatively high in a whole machine recovery mode, and in order to save resources and cost, a fine granularity recovery mode is adopted for backup recovery.
In step S802, information of the snapshot disk is obtained from the backup point, the disk to be restored is cloned into the shared directory, and the shared directory is set as an NFS shared directory.
Specifically, the information of the snapshot disk in the backup point is obtained, and the snapshot disk corresponding to the required disk to be restored is cloned into the shared directory according to the information.
In step S803, an NFS storage is created on the vCenter through the shared directory, and the disk to be restored in the NFS storage is added to the backup proxy virtual machine.
The vCenter is a scalable and extensible platform, can centrally manage the vSphere environment, and can greatly improve the control of an administrator over the virtual environment compared with other management platforms.
In step S804, a local directory is created on the backup proxy virtual machine, information of the disk to be restored is obtained, and the disk to be restored is mounted on the local directory.
In this embodiment, a local directory named by the virtual machine name is created on the backup proxy virtual machine, and individual disks create a disk named disk under the directory and mount directly, and LVM disks create only one subdirectory and mount once.
Specifically, an LVM composed of multiple disks is mounted on only one directory.
Further, the local directory is preferably consistent with the shared directory structure.
In step S805, an FTP or NAS service is enabled in the backup server, and the local directory is shared in the manner of the FTP or NAS service.
NFS (Network File System ), an agreement for use in a distributed file system, is used to allow clients to access data on disks on different hosts through a network.
FTP (File TransferProtocol ), a set of standard protocols for file transfer over a network, is used for users to communicate with another host in a file-handling manner, including adding, deleting, modifying, looking up, transferring, etc.
In this embodiment, the full-scale backup point of the virtual machine of embodiment 1 is taken as an example, and the fine-grained restoration scheme of this embodiment is described in detail.
As shown in fig. 9, the three disk snapshots contained in the full-volume backup point at this time are respectively base_volume1_snap1, base_volume2_snap1, and base_volume3_snap1.
1) In the storage pool of the backup server, a shared directory/share 1 is created.
2) Three disk snapshots corresponding to the full backup point are obtained, and three clone disks clone_volume1, clone_volume2 and clone_volume3 are cloned and put into a shared directory/share 1.
3) And mounting the shared directory/share 1 as the NFS storage to the super fusion virtualization cluster, and transmitting mounting information to the backup proxy virtual machine.
4) The clone disk of shared directory/share 1 in NFS storage is added to the backup proxy virtual machine.
5) And the backup proxy virtual machine mounts the virtual machine disks clone_volme 1, clone_volme 2 and clone_volme 3 to the created local catalogue according to the disk information obtained by the lsblk, enables the FTP service in the backup proxy server, and shares the local catalogue in an FTP mode.
6) The user views the files in clone_volume as needed and downloads for use. And after the user finishes using, recycling the resources.
As shown in fig. 10, the flow of resource recovery after fine-grained recovery is completed in the above steps is described.
1) Stopping the FTP service;
2) Separating the corresponding disks clone_volme 1, clone_volme 2 and clone_volme 3 from the backup proxy virtual machine;
3) Removing the NFS storage;
4) The backup server destroys three clone disks clone_volme 1, clone_volme 2 and clone_volme 3;
5) The shared directory is deleted.
It should be understood that the steps defined in the embodiments of the present invention or the flowcharts sequentially shown as indicated by the arrows are only for convenience of description, and are not used for limiting the execution order of the steps, and are not necessarily sequentially executed in the order indicated by the steps or the arrows, and the present invention may also be implemented by partial order change without affecting the essence of the present invention.
According to the virtual machine backup and recovery method based on the vSAN super-fusion virtualization platform, through deploying the backup agent virtual machine on the vSAN super-fusion virtualization platform, LVM composition information of a disk can be obtained, and when fine granularity recovery is realized, original-format volume files, LVM composition information and the like can be directly identified; the concurrent backup recovery can break through the limitation of the concurrent number and speed limit of a virtualization manufacturer; the disk to be backed up is added to the backup proxy virtual machine, and the storage network is used for data transmission, so that the speed of backup recovery can be obviously improved, and the load of the management network can be effectively reduced; the method can support the domestic platform to deploy backup recovery software to perform the backup recovery of VMware.
Referring to fig. 11 to fig. 12, an apparatus for backing up and recovering virtual machines based on a vSAN super fusion virtualization platform according to an embodiment of the present invention is described.
In an embodiment of the present invention, the device for virtual machine backup based on the vSAN super fusion virtualization platform includes a snapshot creation module 1101, a disk addition module 1102, and a disk backup module 1103.
The snapshot creation module 1101 is configured to obtain, on the vSAN super-fusion virtualization platform, the original virtual machine to be backed up and disk information thereof, and call a storage interface to create a disk snapshot.
And the disk adding module 1102 is configured to add a snapshot disk corresponding to the disk snapshot to a backup proxy virtual machine, and record information of the snapshot disk to the backup proxy virtual machine.
The disk backup module 1103 is configured to backup the snapshot disk to a backup server, generate a backup point, and store the backup point.
The disk backup module 1103 is further configured to: when full-volume backup is performed, the backup server receives the information and the effective data of the snapshot disks sent by the backup proxy virtual machine, creates a volume file with the same specification for each disk to be backed up, and writes the effective data into the corresponding volume file; after the full-volume backup is completed, the backup server makes consistent snapshots of all the volume files, and the consistent snapshots are stored as full-volume backup points.
The disk backup module 1103 is further configured to: when in incremental backup, the backup server receives the information and the effective data of the snapshot disk sent by the backup proxy virtual machine, acquires a last backup volume file, and writes the effective data into the volume file; after the incremental backup is completed, the backup server makes consistent snapshots of all the volume files, saves the consistent snapshots as incremental backup points, and deletes the snapshot disk of the last backup.
The disk backup module 1103 is further configured to: and when the full-volume backup is performed, filtering hole data in the data to be backed up, obtaining effective data and sending the effective data to the backup server.
The disk backup module 1103 is further configured to: and in the incremental backup, comparing the data to be backed up with the data in the snapshot disk created in the last backup, obtaining effective data and sending the effective data to the backup server.
In an embodiment of the present invention, the recovery apparatus of the virtual machine backup includes a virtual machine creation module 1201, a disk separation module 1202, an information acquisition module 1203, and a disk recovery module 1204.
The virtual machine creating module 1201 is configured to select a backup point to be restored, and create a target virtual machine with the same disk specification as the original virtual machine according to the information of the backup point.
And a disk separation module 1202, configured to separate a disk to be restored from the target virtual machine, and add the disk to be restored to the backup proxy virtual machine.
The information obtaining module 1203 is configured to obtain, according to the information of the backup point, pairing information of the to-be-restored disk and the snapshot disk in the backup point, and transfer the valid data of the snapshot disk obtained by the backup server from the corresponding snapshot to the backup proxy virtual machine.
And the disk recovery module 1204 is configured to detach the disk to be recovered from the backup proxy virtual machine and re-add the disk to the target virtual machine after the backup proxy virtual machine writes the valid data into the disk to be recovered.
Further, the virtual machine backup recovery device further comprises a virtual machine cleaning module, which is used for selecting backup points to be recovered, cleaning disk snapshots of the original virtual machine, separating the disks to be recovered from the original virtual machine, and adding the disks to be recovered to the backup proxy virtual machine.
Fig. 13 illustrates a hardware block diagram of a computing device 130 for virtual machine backup and restore based on a vSAN superfusion virtualization platform, according to an embodiment of the present specification. As shown in fig. 13, computing device 130 may include at least one processor 1301, memory 1302 (e.g., non-volatile memory), memory 1303, and communication interface 1304, and at least one processor 1301, memory 1302, memory 1303, and communication interface 1304 are connected together via bus 1305. The at least one processor 1301 executes at least one computer readable instruction stored or encoded in the memory 1302.
It will be appreciated that the computer-executable instructions stored in the memory 1302, when executed, cause the at least one processor 1301 to perform the various operations and functions described above in connection with fig. 1-13 in various embodiments of the present specification.
In embodiments of the present description, computing device 130 may include, but is not limited to: personal computers, server computers, workstations, desktop computers, laptop computers, notebook computers, mobile computing devices, smart phones, tablet computers, cellular phones, personal Digital Assistants (PDAs), handsets, messaging devices, wearable computing devices, consumer electronic devices, and the like.
According to one embodiment, a program product, such as a machine-readable medium, is provided. The machine-readable medium may have instructions (i.e., elements described above implemented in software) that, when executed by a machine, cause the machine to perform the various operations and functions described above in connection with fig. 1-13 in various embodiments of the specification. In particular, a system or apparatus provided with a readable storage medium having stored thereon software program code implementing the functions of any of the above embodiments may be provided, and a computer or processor of the system or apparatus may be caused to read out and execute instructions stored in the readable storage medium.
According to the virtual machine backup and recovery method based on the vSAN super-fusion virtualization platform, through deploying the backup agent virtual machine on the vSAN super-fusion virtualization platform, LVM composition information of a disk can be obtained, and when fine granularity recovery is realized, original-format volume files, LVM composition information and the like can be directly identified; the concurrent backup recovery can break through the limitation of the concurrent number and speed limit of a virtualization manufacturer; the disk to be backed up is added to the backup proxy virtual machine, and the storage network is used for data transmission, so that the speed of backup recovery can be obviously improved, and the load of the management network can be effectively reduced; the method can support the domestic platform to deploy backup recovery software to perform the backup recovery of VMware.
It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The foregoing descriptions of specific exemplary embodiments of the present invention are presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain the specific principles of the invention and its practical application to thereby enable one skilled in the art to make and utilize the invention in various exemplary embodiments and with various modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.

Claims (13)

1. A method for virtual machine backup based on a vSAN superset virtualization platform, the method comprising:
On a vSAN super-fusion virtualization platform, acquiring an original virtual machine to be backed up and disk information thereof, and calling a storage interface to create a disk snapshot;
adding a snapshot disk corresponding to the disk snapshot to a backup proxy virtual machine, and recording information of the snapshot disk to the backup proxy virtual machine; and
and backing up the snapshot disk to a backup server, generating a backup point and storing the backup point.
2. The method for virtual machine backup based on a vSAN superfusion virtualization platform according to claim 1 wherein the backup comprises a full volume backup, wherein backing up the snapshot disks to a backup server, generating a backup point and saving, comprises:
when full-volume backup is performed, the backup server receives the information and the effective data of the snapshot disks sent by the backup proxy virtual machine, creates a volume file with the same specification for each disk to be backed up, and writes the effective data into the corresponding volume file;
after the full-volume backup is completed, the backup server makes consistent snapshots of all the volume files, and the consistent snapshots are stored as full-volume backup points.
3. The method for virtual machine backup based on a vSAN superfusion virtualization platform according to claim 2 wherein the backup further comprises an incremental backup, wherein the snapshot disk is backed up to a backup server, a backup point is generated and saved, further comprising:
When in incremental backup, the backup server receives the information and the effective data of the snapshot disk sent by the backup proxy virtual machine, acquires a last backup volume file, and writes the effective data into the volume file;
after the incremental backup is completed, the backup server makes consistent snapshots of all the volume files, saves the consistent snapshots as incremental backup points, and deletes the snapshot disk of the last backup.
4. The method for virtual machine backup based on a vSAN super fusion virtualization platform according to claim 2, wherein the backup server receives the snapshot disk information and valid data sent by the backup proxy virtual machine, and comprises:
and when the full-volume backup is performed, filtering hole data in the data to be backed up, obtaining effective data and sending the effective data to the backup server.
5. The method for virtual machine backup based on a vSAN super fusion virtualization platform according to claim 3, wherein the backup server receiving the snapshot disk information and valid data sent by the backup proxy virtual machine comprises:
and in the incremental backup, comparing the data to be backed up with the data in the snapshot disk created in the last backup, obtaining effective data and sending the effective data to the backup server.
6. A method for restoring a virtual machine backup, the method comprising:
performing pre-backup by adopting the virtual machine backup method as claimed in any one of claims 1-5;
selecting a backup point to be restored, and creating a target virtual machine with the same disk specification as the original virtual machine according to the information of the backup point;
separating a disk to be restored from the target virtual machine, and adding the disk to be restored to the backup proxy virtual machine;
according to the information of the backup point, pairing information of the disk to be restored and the snapshot disk in the backup point is obtained, and the effective data of the snapshot disk obtained by the backup server from the corresponding snapshot is transmitted to the backup proxy virtual machine; and
and after the backup proxy virtual machine writes the effective data into the disk to be restored, separating the disk to be restored from the backup proxy virtual machine, and re-adding the disk to the target virtual machine, wherein the VADP interface is not used by the disk to be restored when the effective data is written into the disk to be restored.
7. A method for restoring a virtual machine backup, the method comprising:
Performing pre-backup by adopting the virtual machine backup method as claimed in any one of claims 1-5;
selecting a backup point to be restored, cleaning a disk snapshot of the original virtual machine, separating the disk to be restored from the original virtual machine, and adding the disk to be restored to the backup proxy virtual machine;
according to the information of the backup point, pairing information of the disk to be restored and the snapshot disk in the backup point is obtained, and the effective data of the snapshot disk obtained by the backup server from the corresponding snapshot is transmitted to the backup proxy virtual machine; and
and after the backup proxy virtual machine writes the effective data into the disk to be restored, separating the disk to be restored from the backup proxy virtual machine, and re-adding the disk to the original virtual machine, wherein the VADP interface is not used by the disk to be restored when the effective data is written into the disk to be restored.
8. A method for restoring a virtual machine backup, the method comprising:
performing pre-backup by adopting the virtual machine backup method as claimed in any one of claims 1-5;
selecting a backup point to be restored, and creating a shared directory in a storage pool of the backup server;
Obtaining information of a snapshot disk from the backup point, cloning the disk to be restored into the shared directory, and setting the shared directory as an NFS shared directory;
creating an NFS storage on a vCenter through the shared directory, and adding the disk to be restored in the NFS storage to the backup proxy virtual machine;
creating a local directory on the backup proxy virtual machine, obtaining information of the disk to be restored, and mounting the disk to be restored on the local directory; and
and enabling the FTP or NAS service in the backup server, and sharing the local directory in the mode of the FTP or NAS service.
9. The method for restoring a virtual machine backup of claim 8, further comprising:
after the use of the local directory is completed, performing resource recovery, stopping FTP or NAS service by the backup proxy virtual machine, deleting the corresponding disk from the backup proxy virtual machine, and removing the NFS storage; and
destroying the clone disk of the backup server and deleting the shared directory.
10. An apparatus for virtual machine backup based on a vSAN superset virtualization platform, the apparatus comprising:
The snapshot creation module is used for acquiring the original virtual machine to be backed up and the disk information thereof on the vSAN super-fusion virtualization platform, and calling the storage interface to create a disk snapshot;
the disk adding module is used for adding the snapshot disk corresponding to the disk snapshot to the backup proxy virtual machine and recording the information of the snapshot disk to the backup proxy virtual machine; and
and the disk backup module is used for backing up the snapshot disk to a backup server, generating a backup point and storing the backup point.
11. A virtual machine backup restoration apparatus, the apparatus comprising:
the virtual machine creation module is used for selecting backup points to be restored and creating a target virtual machine with the same disk specification as the original virtual machine according to the information of the backup points;
the disk separation module is used for separating the disk to be restored from the target virtual machine and adding the disk to be restored to the backup proxy virtual machine;
the information acquisition module is used for acquiring pairing information of the disk to be restored and the snapshot disk in the backup point according to the information of the backup point, and transmitting the effective data of the snapshot disk acquired by the backup server from the corresponding snapshot to the backup proxy virtual machine; and
And the disk recovery module is used for separating the disk to be recovered from the backup proxy virtual machine and re-adding the disk to be recovered to the target virtual machine after the backup proxy virtual machine writes the effective data into the disk to be recovered.
12. An electronic device, comprising:
at least one processor; and
a memory storing instructions that, when executed by the at least one processor, cause the at least one processor to perform the method of virtual machine backup based on a vSAN superfused virtualization platform of any one of claims 1-5 or the method of restoration of virtual machine backup of any one of claims 6-9.
13. A computer readable storage medium, wherein a computer program is stored on the computer readable storage medium, and the computer program realizes the steps of the virtual machine backup method based on the vSAN super fusion virtualization platform according to any one of claims 1 to 5 and the virtual machine backup restoration method according to any one of claims 6 to 9 when the computer program is executed by a processor.
CN202310254828.9A 2023-03-16 2023-03-16 Virtual machine backup and recovery method based on vSAN super-fusion virtualization platform Pending CN116185720A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117493074A (en) * 2023-09-25 2024-02-02 广州鼎甲计算机科技有限公司 Virtual machine increment recovery method, device, computer equipment and storage medium

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117493074A (en) * 2023-09-25 2024-02-02 广州鼎甲计算机科技有限公司 Virtual machine increment recovery method, device, computer equipment and storage medium

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