CN106598787A - Xen-based agent-free backup and recovery method and system - Google Patents
Xen-based agent-free backup and recovery method and system Download PDFInfo
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- CN106598787A CN106598787A CN201611266172.9A CN201611266172A CN106598787A CN 106598787 A CN106598787 A CN 106598787A CN 201611266172 A CN201611266172 A CN 201611266172A CN 106598787 A CN106598787 A CN 106598787A
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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
- G06F11/1458—Management of the backup or restore process
- G06F11/1464—Management of the backup or restore process for networked environments
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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
- G06F11/1458—Management of the backup or restore process
- G06F11/1469—Backup restoration techniques
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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
- 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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- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
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- Quality & Reliability (AREA)
- Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
Abstract
The invention discloses a Xen-based agent-free backup and recovery method and system. The method comprises the steps that a third-party backup apparatus sends a backup request or a recovery request to a cloud management platform, enables the cloud management platform to generate a snapshot of a corresponding virtual machine according to a virtual machine ID or generate a new virtual machine according to metadata information of the virtual machine, and enables a Xen virtualization unit to extract sector information of a required backup information according to a backup type; the cloud management platform notifies the Xen virtualization unit to enable a reading interface or a writing interface and sends the metadata information, the sector information and a disk access mode of the virtual machine to the third-party backup apparatus; the third-party backup apparatus reads data corresponding to the sector information in the Xen virtualization unit and performs archiving, or writes the data in the Xen virtualization unit according to a blank diskette; and the cloud management platform notifies the Xen virtualization unit to disable the reading interface or the writing interface. The Xen virtualization is flexibly connected with the third-party backup apparatus, and agent-free backup is performed on the virtual machine.
Description
Technical field
The present invention relates to backup and reduction technology is virtualized, more particularly to based on Xen is without proxy backup method of reducing and is
System.
Background technology
In today of cloud computing fast development, Intel Virtualization Technology is approved by increasing client, virtualizes as quilt
Generally accepted scheme has climbed up the stage of the informatization of all trades and professions.Informationalized construction be unable to do without backup disaster tolerance, with
Popularization of the virtualization applications in enterprise and industry-by-industry, the importance of Backup and Restore problem is increasingly highlighted.
Virtual machine backup functionality is this function of a virtualized data protection group.But what most of Intel Virtualization Technology was carried
Backup functionality can produce certain impact to service feature when backup is performed, while backup policy is dumb, so, for
Virtualization backup, common mode are the backup software systems using specialty.
The backup software of specialty can be summarized as two methods from principle：Proxy backup and without proxy backup.
Proxy backup refers to that needs carry out backup operation in physical host, virtual machine internal installation agent backup software, should
Proxy backup software is used for the request for responding and processing the backup server for carrying out automatic network, but this mode not only results in backup
Efficiency is low, can also cause the resource consumption that host side there is no need, and when multiple backups are parallel, bottleneck problem easily occurs.
The API (ApplicationProgrammingInterface) adopted using virtual machine is referred to without proxy backup
Directly the virtual machine file in physical machine is backed up, the benefit of this mode is no longer to need to dispose on every virtual machine
Backup software, substantially reduces resource consumption, while source virtual machine or new virtual machine quickly can be recovered.
On market, the backup software of main flow all supports the virtualization software that VMware, Hyper-V, KVM, Xen derive from
Backed up.Current some commercial virtual platforms have contained complete backup and Disaster Recovery Project for Short, such as VMware, and
The Xen that increases income virtualization but do not carry proprietary backup instrument at present, only provide backup with recover API, compare VMware with
The backup of Hyper-V, Xen offer, recovery capability are weaker.If user realizes Backup and Restore work(based on Xen virtualizations of increasing income
Oneself can be accomplished by combine outfit, while needing user to manually complete the backup of key component.Although also going out on market
Some profession backup softwares for Xen are showed, but principle have been all based on the redundancy technique of agency, this backup mode has needed to make
Into extra resource consumption, it is easy to have influence on the performance of system.
The content of the invention
In order to overcome the deficiencies in the prior art, an object of the present invention be provide based on Xen without proxy backup also
Former method, its energy interface flexibility third party's back-up device, realizes without proxy backup and reduction.
The second object of the present invention is to provide based on Xen without proxy backup also original system, and which can realize the present invention's
One of purpose.
An object of the present invention employs the following technical solutions realization：
Based on Xen without proxy backup method of reducing, it is applied between third party's back-up device and cloud management platform, including
Following steps：
S1：Third party's back-up device sends backup request or reduction request to cloud management platform, and the backup request includes
Virtual machine ID, Backup ID and type of backup, the reduction request include the metadata information of virtual machine, the dress of third party's backup afterwards
Cycle transmission Task Progress request signal is put to cloud management platform；
S2：Cloud management platform generates the snapshot or the first number according to virtual machine of the corresponding virtual machine according to virtual machine ID
It is believed that breath generates new virtual machine and blank diskette, and make Xen virtualization units that region is backed up according to needed for type of backup is extracted
Sector auxiliary information；
S3：Cloud management platform notifies that Xen virtualization units are opened and reads interface or write interface, by the metadata of virtual machine
Information, sector auxiliary information and disk access mode are sent to third party's back-up device；
S4：Third party's back-up device according to the mandate of cloud management platform read Xen virtualization units in sector auxiliary information phase
The data answered simultaneously are filed；Or third party's back-up device writes data according to blank diskette in Xen virtualization units；
S5：Cloud management platform notifies that Xen virtualization units are closed and reads interface or write interface.
Preferably, the type of backup includes full backup and incremental backup.
Preferably, the resftul modes between third party's back-up device and cloud management platform using HTTPS are led to
Letter.
Preferably, NBD protocol communications are adopted between third party's back-up device and Xen virtualization units.
The second object of the present invention employs the following technical solutions realization：
Virtualized without proxy backup also original system, including third party's back-up device, cloud management platform and Xen based on Xen
Unit；
Third party's back-up device is used to send backup request or reduction request to cloud management platform, the backup request
Including virtual machine ID, Backup ID and type of backup, the reduction request includes the metadata information of virtual machine, and third party is standby afterwards
Part device cycle sends Task Progress request signal to cloud management platform；Cloud management platform is for generating this pair according to virtual machine ID
The snapshot of the virtual machine answered generates new virtual machine and blank diskette according to the metadata information of virtual machine, and makes Xen virtual
Change the sector auxiliary information that unit backs up region according to needed for type of backup is extracted, the cloud management platform notifies Xen virtualizations afterwards
Unit open read interface or write interface, by the metadata information of virtual machine, sector auxiliary information and disk access mode send to
Third party's back-up device, make third party's back-up device according to the mandate of cloud management platform read Xen virtualization units in sector
The corresponding data of information are simultaneously filed；Or third party's back-up device writes number according to blank diskette in XEN virtualization units
According to.
Preferably, the type of backup includes full backup and incremental backup.
Preferably, the resftul modes between third party's back-up device and cloud management platform using HTTPS are led to
Letter.
Preferably, NBD protocol communications are adopted between third party's back-up device and Xen virtualization units.
Compared to existing technology, the beneficial effects of the present invention is：
The present invention can allow Xen virtualization interface flexibility third party's back-up devices, virtual machine be realized without proxy backup, together
The strategies such as Shi Shixian is disposably backed up, schedule backup, and virtual machine full backup, incremental backup, online backup are supported, preferably
Solve the problems, such as Backup and Restore that user is run into using Xen virtual platforms of increasing income.
Description of the drawings
Flow charts of the Fig. 1 for the embodiment of the present invention one.
Flow charts of the Fig. 2 for the embodiment of the present invention two.
Specific embodiment
Below, with reference to accompanying drawing and specific embodiment, the present invention is described further：
The present invention is provided based on Xen without proxy backup method of reducing, and Xen is an open source code virtual machine monitoring
Device, is called accurate virtualized technology by one kind and obtains high-performance, or even extremely disagreeableness with traditional virtual technology at some
Also there is excellent performance on framework.Xen virtualizes the backup and reduction function of itself and virtual machine can only be backed up offline completely at present,
Online backup, incremental backup etc. cannot be carried out to virtual machine.The present invention apply third party's back-up device, cloud management platform and
Xen virtualization units, three interact communication.Wherein cloud management platform is made with IAAS (Infrastructure as a
Service) cloud platform and Xen virtualization units composition manage system component of the virtual machine as Core Feature, there is provided necessity
API and read-write licensing scheme make backup can complete virtual machine backup-and-restore operation.Xen virtualization units are cloud management
The underlying virtual Xen of platform.Third party's back-up device to manage system component of the backup data store as Core Feature, with height
Reliably filing and restoring data are main target to effect.Virtual machine and storage pool letter are inquired about by the API that cloud management platform is provided
Breath, and after the read-write mandate for obtaining Xen virtualization units, can directly access the virtual disk number that underlying virtual is specified
According to.
Four subcommands are realized in Xen virtualization units, to interact with cloud management platform, is respectively：
1st, virtual machine ID is obtained, opens read-only interface and allow outside to read data；
2nd, opening write interface allows outside to write disc information order；
3rd, terminate the remote access that or second point are opened at above-mentioned first point；
4th, BAT (the vhd files of vhd are obtained by way of directly accessing vhd (Virtual Hard Disk format)
The middle metamessage for preserving effective data distribution) and father's mirror image.
Embodiment one：
It is shown in Figure 1, provided based on Xen here without proxy backup method：
S1：Third party's back-up device sends backup request to cloud management platform, and the backup request includes virtual machine ID, standby
Part ID and type of backup；The Task Progress request signal of third party's back-up device cycle transmission afterwards is to cloud management platform；
In this step, initiate to ask by third party's back-up device, be restful requests, restful is a kind of framework wind
Lattice, are communicated using the restful modes based on HTTPS with cloud management platform in third party's back-up device.Third party backs up
Device is initiated request and informs that cloud management platform needs virtual machine ID, Backup ID and the type of backup of backup.
Type of backup has two kinds, respectively full backup and incremental backup, and full backup is that total data is all backed up,
Incremental backup is the content increase data backup for last backup.First management platform can be actually fed back after receiving request
Give third party's back-up device one number of accepting.
S2：Cloud management platform generates the snapshot of the corresponding virtual machine according to virtual machine ID, and makes Xen virtualization unit roots
The sector auxiliary information in backup region needed for extracting according to type of backup；
In this step, it is also different according to the different sector auxiliary informations for proposing of type of backup.If what is initiated is to increase
Amount backup, and current virtual machine has ever done backup, then extract the sector auxiliary information of the actual change in backup interval twice, such as
What fruit initiated is full backup, then propose the sector auxiliary information that real data is located.
S3：Cloud management platform notifies that Xen virtualization units are opened and reads interface, by the metadata information of virtual machine, sector
Information and disk access mode are sent to third party's back-up device；
The metadata information of virtual machine can be obtained according to virtual machine ID, that is, the initial configuration information of virtual machine.Xen is empty
The mandate of planization unit is opened after reading interface, it is possible to achieve long-range read functions.
S4：Third party's back-up device according to the mandate of cloud management platform read Xen virtualization units in sector auxiliary information phase
The data answered simultaneously are filed；
Third party's back-up device is directly connected to the data that Xen virtualization units read respective sectors by wddk.Wddk is
A kind of c language databases, third party's back-up device are packaged by wddk with the IO read-write operations of Xen virtualization units, are adopted
With NBD (a kind of long-range block device access protocal of suggestion) agreement, efficiently long-range block device can be mapped to locally.
S5：Cloud management platform notifies that Xen virtualization units are closed and reads interface.
After the completion of the backup of third party's back-up device, notify that cloud management platform, cloud management platform delete unnecessary snapshot, and
Notify that Xen virtualization units are closed and read interface, cancel remote disk access mandate.
Embodiment two：
As shown in Fig. 2 being provided based on Xen here without acting on behalf of method of reducing：
Sa：Third party's back-up device sends reduction request to cloud management platform, and reduction request includes the metadata of virtual machine
Information, the Task Progress request signal of third party's back-up device cycle transmission afterwards is to cloud management platform；
Identical with embodiment one, this step is initiated to ask by third party's back-up device, and third party's back-up device initiates request
Inform that cloud management platform needs the metadata information of virtual machine.
Sb：Cloud management platform generates new virtual machine and blank diskette according to the metadata information of virtual machine；
Sc：Cloud management platform notifies that Xen virtualization units open write interface, by the metadata information of virtual machine, sector
Information and disk access mode are sent to third party's back-up device；
Sd：Third party's back-up device writes data according to blank diskette in Xen virtualization units；
Here third party's back-up device is also to be directly connected to Xen virtualization units by wddk to write data.
Se：Cloud management platform notifies that Xen virtualization units close write interface.
After third party's back-up device completes reducing disk, notify that cloud management platform, cloud management platform notify that Xen virtualizations are single
Unit closes write interface, cancels remote disk access mandate.
Embodiment three：
The present invention provide it is a kind of based on Xen without proxy backup also original system, it include tripartite's back-up device, cloud management put down
Platform and Xen virtualization units；
Third party's back-up device is used to send backup request or reduction request to cloud management platform, the backup request
Including virtual machine ID, Backup ID and type of backup, the reduction request includes the metadata information of virtual machine, and third party is standby afterwards
Part device cycle sends Task Progress request signal to cloud management platform；Cloud management platform is for generating this pair according to virtual machine ID
The snapshot of the virtual machine answered generates new virtual machine and blank diskette according to the metadata information of virtual machine, and makes Xen virtual
Change the sector auxiliary information that unit backs up region according to needed for type of backup is extracted, the cloud management platform notifies Xen virtualizations afterwards
Unit open read interface or write interface, by the metadata information of virtual machine, sector auxiliary information and disk access mode send to
Third party's back-up device, makes third party's back-up device data corresponding with sector auxiliary information carry out in reading Xen virtualization units
Filing；Or third party's back-up device writes data according to blank diskette in Xen virtualization units.
The working-flow that the present embodiment is provided is corresponding with the method for embodiment one and embodiment two, and principle is identical.
In the present embodiment, type of backup includes full backup and incremental backup.Third party's back-up device and cloud management are flat
Resftul modes between platform using HTTPS are communicated.NBD is adopted between third party's back-up device and Xen virtualization units
Protocol communication.
It will be apparent to those skilled in the art that technical scheme that can be as described above and design, make other various
It is corresponding to change and deformation, and all these change and deformation should all belong to the protection domain of the claims in the present invention
Within.
Claims (8)
1. based on Xen without proxy backup method of reducing, it is characterised in that be applied to third party's back-up device and cloud management platform
Between, comprise the steps：
S1：Third party's back-up device sends backup request or reduction request to cloud management platform, and the backup request includes virtually
Machine ID, Backup ID and type of backup, the reduction request include the metadata information of virtual machine, afterwards third party's back-up device week
Phase sends Task Progress request signal to cloud management platform；
S2：Cloud management platform generates the snapshot of the corresponding virtual machine or according to the metadata of virtual machine letter according to virtual machine ID
Breath generates new virtual machine and blank diskette, and makes Xen virtualization units that the fan in region is backed up according to needed for type of backup is extracted
Area's information；
S3：Cloud management platform notifies that Xen virtualization units are opened and reads interface or write interface, the metadata of virtual machine is believed
Breath, sector auxiliary information and disk access mode are sent to third party's back-up device；
S4：Third party's back-up device reads corresponding with sector auxiliary information in Xen virtualization units according to the mandate of cloud management platform
Data are simultaneously filed；Or third party's back-up device writes data according to blank diskette in Xen virtualization units；
S5：Cloud management platform notifies that Xen virtualization units are closed and reads interface or write interface.
2. as claimed in claim 1 based on Xen without proxy backup method of reducing, it is characterised in that the type of backup bag
Include full backup and incremental backup.
3. as claimed in claim 1 based on Xen without proxy backup method of reducing, it is characterised in that third party's backup
Resftul modes between device and cloud management platform using HTTPS are communicated.
4. as claimed in claim 1 based on Xen without proxy backup method of reducing, it is characterised in that third party's back-up device
NBD protocol communications are adopted between Xen virtualization units.
5. based on Xen without proxy backup also original system, it is characterised in that including third party's back-up device, cloud management platform and
Xen virtualization units；
Third party's back-up device is used to send backup request or reduction request to cloud management platform, and the backup request includes
Virtual machine ID, Backup ID and type of backup, the reduction request include the metadata information of virtual machine, the dress of third party's backup afterwards
Cycle transmission Task Progress request signal is put to cloud management platform；Cloud management platform is corresponding for generating this according to virtual machine ID
The snapshot of virtual machine generates new virtual machine and blank diskette according to the metadata information of virtual machine, and it is single to virtualize Xen
Unit backs up the sector auxiliary information in region according to needed for type of backup is extracted, and the cloud management platform notifies Xen virtualization units afterwards
Open and read interface or write interface, the metadata information of virtual machine, sector auxiliary information and disk access mode are sent to the 3rd
Square back-up device, make third party's back-up device according to the mandate of cloud management platform read Xen virtualization units in sector auxiliary information
Corresponding data are simultaneously filed；Or third party's back-up device writes data according to blank diskette in Xen virtualization units.
6. as claimed in claim 5 based on Xen without proxy backup also original system, it is characterised in that the type of backup bag
Include full backup and incremental backup.
7. as claimed in claim 5 based on Xen without proxy backup also original system, it is characterised in that third party's backup
Resftul modes between device and cloud management platform using HTTPS are communicated.
8. as claimed in claim 5 based on Xen without proxy backup also original system, it is characterised in that third party's back-up device
NBD protocol communications are adopted between Xen virtualization units.
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