CN107402848A - A kind of implementation method of snapshot data uniformity - Google Patents
A kind of implementation method of snapshot data uniformity Download PDFInfo
- Publication number
- CN107402848A CN107402848A CN201710639340.2A CN201710639340A CN107402848A CN 107402848 A CN107402848 A CN 107402848A CN 201710639340 A CN201710639340 A CN 201710639340A CN 107402848 A CN107402848 A CN 107402848A
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- Prior art keywords
- snapshot
- data
- main program
- backup
- application program
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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
Abstract
The invention discloses a kind of implementation method of snapshot data uniformity, this method includes：Main program receives snapshot request, it is desirable to which application program enumerates meta data file；Data in memory storage are written on disk by application program, and short interruption read-write operation；Main program creates snapshot in host side, and notice backup software creates snapshot operation and completed after snapshot has created, and notifies application program to restart reading and writing of files；Main program receives the data backup requests of backup software, and local replica is done to source book.This method, which is realized, improves Information Security.
Description
Technical field
The present invention relates to data snapshot technical field, more particularly to a kind of implementation method of snapshot data uniformity.
Background technology
At present, the technology such as cloud computing, Internet of Things, social networks, mobile Internet, data class and the rule of IT field are promoted
Mould volatile is increased with exponential.The arrival in big data epoch, data are changed into important basis from simple process object
Property resource.Scale, the complexity growth rate of big data, have exceeded the hardware advances speed according to Moore's Law, to existing
IT architecture and machine processing and computing capability bring great challenge.Meanwhile as long as data storage, transmission, exchange occurs, just
It is likely to result in loss of data or is destroyed.Data disaster tolerance, data safety can be protected and improve the clock availability of data,
It can consider from many aspects such as RAID protections, redundancy structure, data backup, fault pre-alarmings.Data backup is that disaster tolerance is most basic
Form, after accident occurs, can it is complete, quick, simple and direct by the data of backup, reliably recover legacy data.Snapshot
Technology, it is a completely available copy on specifying data acquisition system, the copy includes corresponding data to be copied at some time point
The image at the time point that shellfish starts.Snapshot can be that a copy of the data represented by it or one of data answer
Product.
But current snapshot cannot ensure that data in snapshot and some time dotted state are completely the same, it is impossible to reach several
According to uniformity, the complete reliable of snapshot data can not be ensured, Information Security is relatively low.Therefore how to improve Information Security is urgently
The problem of to be solved.
The content of the invention
It is an object of the invention to provide a kind of implementation method of snapshot data uniformity, to realize raising Information Security.
In order to solve the above technical problems, the present invention provides a kind of implementation method of snapshot data uniformity, this method includes：
Backup software initiates snapshot request；
Main program receives snapshot request, it is desirable to which application program enumerates meta data file；
Data in memory storage are written on disk by application program, and short interruption read-write operation；
Main program creates snapshot in host side, and notice backup software creates snapshot operation and completed after snapshot has created,
And application program is notified to restart reading and writing of files；
Main program receives the data backup requests of backup software, and local replica is done to source book.
Preferably, the backup software initiates snapshot request, including：
Backup software inherits requestor's interface that main program externally provides, and initiates snapshot request.
Preferably, the main program receives snapshot request, it is desirable to and application program enumerates meta data file, including：
Main program captures the snapshot request of backup software initiation；
Main program requires that all application programs enumerate meta data file, how is used to specify application program according to Backup Data
Recovered；
Backup software realizes writer's interface that main program externally provides, and meta data file is returned to main program.
Preferably, the application program is by before data are written on disk in memory storage, in addition to：
Main program receives the meta data file that all application programs return, and notifies all application program short interruptions to read and write
Operation, and notify application program that data in EMS memory is written on disk.
Preferably, the main program creates snapshot in host side, including：
After all application programs finish preparation, main program is notified；Main program creates snapshot in host side, to source book.
Preferably, the main program receives the data backup requests of backup software, and local replica is done to source book, including：
Main program receives the data backup requests of backup software, and according to request type, dependence does snapshot, source book is done and increased
Amount, full dose data copy operation.
Preferably, the meta data file is used to recover data.
A kind of implementation method of snapshot data uniformity provided by the present invention, backup software initiate snapshot request；Main journey
Sequence receives snapshot request, it is desirable to which application program enumerates meta data file；Data in memory storage are written on disk by application program,
And short interruption read-write operation；Main program creates snapshot in host side, and notice backup software creates snapshot after snapshot has created
Operation has been completed, and notifies application program to restart reading and writing of files；Main program receives the data backup requests of backup software, right
Source book does local replica.It can be seen that main program is backup software, application program provides interface, backup software, main program and using journey
Cooperated between sequence, create the snapshot of data consistency, the complete reliable of snapshot data is substantially ensured that, after ensureing data recovery
System can use, lift the safety and clock availability of data, and both ensured the integrality of backuped data, also ensure that to the greatest extent
Short it may interrupt application program normal use.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
The embodiment of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can also basis
The accompanying drawing of offer obtains other accompanying drawings.
Fig. 1 is a kind of flow chart of the implementation method of snapshot data uniformity provided by the present invention.
Embodiment
The core of the present invention is to provide a kind of implementation method of snapshot data uniformity, to realize raising Information Security.
In order that those skilled in the art more fully understand the present invention program, below in conjunction with the embodiment of the present invention
Accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only
Part of the embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
Fig. 1 is refer to, Fig. 1 is a kind of flow chart of the implementation method of snapshot data uniformity provided by the present invention, should
Method includes：
S11：Backup software initiates snapshot request；
S12：Main program receives snapshot request, it is desirable to which application program enumerates meta data file；
S13：Data in memory storage are written on disk by application program, and short interruption read-write operation；
S14：Main program creates snapshot in host side, and it is complete to create snapshot operation for notice backup software after snapshot has created
Into, and notify application program to restart reading and writing of files；
S15：Main program receives the data backup requests of backup software, and local replica is done to source book.
It can be seen that main program is backup software, application program provides interface, between backup software, main program and application program
Cooperate, create the snapshot of data consistency, substantially ensure that the complete reliable of snapshot data, ensure the system after data recovery
It can use, lift the safety and clock availability of data, and both ensure the integrality of backuped data, also ensure that as short as possible
Interrupt application program normal use.
Method in opportunity, further, step S11 process specifically include：Backup software is inherited main program and externally provided
Requestor's interface, initiate snapshot request.
Further, step S12 process specifically includes following steps：
S1：Main program captures the snapshot request of backup software initiation；
S2：Main program requires that all application programs enumerate meta data file, how is used to specify application program according to backup
Data are recovered；
S3：Backup software realizes writer's interface that main program externally provides, and meta data file is returned to main program.
Wherein, the meta data file is used to recover data.
Further, in step S13, the application program by before data are written on disk in memory storage, in addition to：
Main program receives the meta data file that all application programs return, and notifies all application program short interruption read-write operations, and
Data in EMS memory is written on disk by notice application program.
Further, in step S14, the process that the main program creates snapshot in host side is specially：It is all to apply journey
After sequence finishes preparation, main program is notified；Main program creates snapshot in host side, to source book.
Further, step S15 process is specially：Main program receive backup software data backup requests, according to please
Type is sought, dependence does snapshot, increment, full dose data copy operation are done to source book.
Snapshot needs and the guarantee of some time point data mode are completely the same, ensure the accuracy of Backup Data with this,
Improve the complete reliable of data backup, snapshot data uniformity may insure that data in snapshot and some time dotted state are complete
Unanimously.This method is backup software, application program provides interface, is cooperated with, and creates the snapshot of data consistency, both protected
Card backups the integralities of data, also ensures that and as short as possible interrupts application program normal use.Other programs of our normal direction
Interface is provided, is cooperated with backup software, application program, storage device, coordinates to link up between each role, it is ensured that do snapshot
Data consistency, the uniformity of snapshot data is ensured in snapshot processes are done, so as to substantially ensure that the complete of snapshot data can
Lean on, ensure that the system after data recovery can use, lift the safety and clock availability of data.
It is as follows based on this method, specific implementation flow：
1st, backup software initiates snapshot request；
Wherein, backup software, which is inherited, realizes requestor's interface that main program externally provides, and backup software initiates to create snapshot
Request；
2nd, main program receives snapshot request, it is desirable to which application program defines how to be resumed；
Wherein, main program captures the request of backup software initiation；Main program requires that all application programs enumerate metadata
File, is used to specify how application program is recovered according to Backup Data；Backup software realizes that what main program externally provided writes
Author's interface, meta data file is returned to main program.
3rd, data in memory storage are written on disk by application program, and short interruption read-write operation；
Wherein, main program receives the file that all application programs return, and notifies all application program short interruptions to read and write
Operation；Main program notifies application program by data in EMS memory flush to disk.
4th, start to create snapshot；
Wherein, after all application programs finish preparation, main program is notified；Main program starts in host side, to source book
Create snapshot；
5th, after snapshot creates, backup software is notified；
Wherein, after main program has created snapshot, notice backup software creates snapshot operation and completed；
6th, application software is notified；
Wherein, main program notice application program, can restart read-write operation, recover normal use；
7th, asked according to backup software, local replica is done to source book.
Wherein, the data backup requests of backup software are received；Main program is according to request type, and snapshot is done in dependence, to source
Volume does increment, full dose data copy, improves data integrity, security.
This method kind, common interface is provided to backup software, application program, it is ensured that cooperate, during snapshot is created,
It short interruption application program read-write operation, after snapshot creates, can be required according to stand-by program, create the behaviour such as increment, full dose copy
Make, by the realization of data consistency snapshot, lift the integrality, security, stability of Backup Data.In this method, backup
Software, application software, storage device collaboration use, it is ensured that do the data consistency of snapshot, while beaten as far as possible in the short time
The read-write operation of disconnected application program, host side can carry out uniformity snapshot data, reduce the shadow to user's normal work online
Ring, improve uniformity, the security of data.
Professional further appreciates that, with reference to the unit of each example of the embodiments described herein description
And algorithm steps, can be realized with electronic hardware, computer software or the combination of the two, in order to clearly demonstrate hardware and
The interchangeability of software, the composition and step of each example are generally described according to function in the above description.These
Function is performed with hardware or software mode actually, application-specific and design constraint depending on technical scheme.Specialty
Technical staff can realize described function using distinct methods to each specific application, but this realization should not
Think beyond the scope of this invention.
Directly it can be held with reference to the step of method or algorithm that the embodiments described herein describes with hardware, processor
Capable software module, or the two combination are implemented.Software module can be placed in random access memory (RAM), internal memory, read-only deposit
Reservoir (ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or technology
In any other form of storage medium well known in field.
A kind of implementation method of snapshot data uniformity provided by the present invention is described in detail above.Herein
Apply specific case to be set forth the principle and embodiment of the present invention, the explanation of above example is only intended to help
Understand the method and its core concept of the present invention.It should be pointed out that for those skilled in the art, do not taking off
On the premise of from the principle of the invention, some improvement and modification can also be carried out to the present invention, these are improved and modification also falls into this
In invention scope of the claims.
Claims (7)
- A kind of 1. implementation method of snapshot data uniformity, it is characterised in that including：Backup software initiates snapshot request；Main program receives snapshot request, it is desirable to which application program enumerates meta data file；Data in memory storage are written on disk by application program, and short interruption read-write operation；Main program creates snapshot in host side, and notice backup software creates snapshot operation and completed after snapshot has created, and leads to Know that application program restarts reading and writing of files；Main program receives the data backup requests of backup software, and local replica is done to source book.
- 2. the method as described in claim 1, it is characterised in that the backup software initiates snapshot request, including：Backup software inherits requestor's interface that main program externally provides, and initiates snapshot request.
- 3. the method as described in claim 1, it is characterised in that the main program receives snapshot request, it is desirable to application program piece Meta data file is lifted, including：Main program captures the snapshot request of backup software initiation；Main program requires that all application programs enumerate meta data file, is used to specify how application program is carried out according to Backup Data Recover；Backup software realizes writer's interface that main program externally provides, and meta data file is returned to main program.
- 4. the method as described in claim 1, it is characterised in that data in memory storage are written on disk by the application program Before, in addition to：Main program receives the meta data file that all application programs return, and notifies all application program short interruption read-write behaviour Make, and notify application program that data in EMS memory is written on disk.
- 5. the method as described in claim 1, it is characterised in that the main program creates snapshot in host side, including：After all application programs finish preparation, main program is notified；Main program creates snapshot in host side, to source book.
- 6. the method as described in claim 1, it is characterised in that the main program receives the data backup requests of backup software, Local replica is done to source book, including：Main program receives the data backup requests of backup software, and according to request type, snapshot is done in dependence, source book is done increment, Full dose data copy operation.
- 7. method as claimed in claim 3, it is characterised in that the meta data file is used to recover data.
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Cited By (5)
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| CN108733514A (en) * | 2018-05-24 | 2018-11-02 | 郑州云海信息技术有限公司 | Method, system and the equipment that snapshot is realized between a kind of storage of isomery |
| CN108984779A (en) * | 2018-07-25 | 2018-12-11 | 郑州云海信息技术有限公司 | Distributed file system snapshot rollback metadata processing method, device and equipment |
| CN110515769A (en) * | 2019-08-15 | 2019-11-29 | 苏州浪潮智能科技有限公司 | A kind of backup processing method, device and electronic equipment and readable storage medium storing program for executing |
| CN111078368A (en) * | 2019-12-26 | 2020-04-28 | 浪潮电子信息产业股份有限公司 | Memory snapshot method and device of cloud computing platform virtual machine and readable storage medium |
| CN113868027A (en) * | 2021-12-01 | 2021-12-31 | 云和恩墨(北京)信息技术有限公司 | Data snapshot method and device |
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| CN108984779A (en) * | 2018-07-25 | 2018-12-11 | 郑州云海信息技术有限公司 | Distributed file system snapshot rollback metadata processing method, device and equipment |
| CN110515769A (en) * | 2019-08-15 | 2019-11-29 | 苏州浪潮智能科技有限公司 | A kind of backup processing method, device and electronic equipment and readable storage medium storing program for executing |
| CN111078368A (en) * | 2019-12-26 | 2020-04-28 | 浪潮电子信息产业股份有限公司 | Memory snapshot method and device of cloud computing platform virtual machine and readable storage medium |
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