CN107643962A - A kind of backup method of data storage, device, equipment and readable storage medium storing program for executing - Google Patents
A kind of backup method of data storage, device, equipment and readable storage medium storing program for executing Download PDFInfo
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- CN107643962A CN107643962A CN201710891090.1A CN201710891090A CN107643962A CN 107643962 A CN107643962 A CN 107643962A CN 201710891090 A CN201710891090 A CN 201710891090A CN 107643962 A CN107643962 A CN 107643962A
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Abstract
The embodiment of the invention discloses a kind of backup method of data storage, device, equipment and computer-readable recording medium.Wherein, method includes obtaining the bitmap of storage system source disk, and the cell of bitmap and the data block of source disk correspond, to represent the state of each data block of source disk；Count after completing last automated back-up, the cell number that bitmap changes；According to default data increment threshold value, corresponding predetermined number when whether judging unit lattice number reaches triggering automated back-up condition, automated back-up condition exceedes data increment threshold value for the incremental data of source disk；If so, automated back-up then is carried out to the data stored in current source disk.It is effective to solve the phenomenon that duplicate data is too many in backup twice, the operating efficiency of storage system automated back-up is improved, avoids the wasting of resources of storage system, improves the utilization rate of storage system resources；Data increment threshold value can be configured according to user's request, improve the usage experience of user.
Description
Technical field
The present embodiments relate to technical field of memory, more particularly to a kind of backup method of data storage, device, sets
The standby and readable machine storage medium of calculating.
Background technology
With the fast development of data storage technology, requirement of the user to the security and stability of storage system is increasingly
It is high.Data backup can copy to all or part of data in other storage mediums from the hard disk or array of applied host machine, be
The basis of disaster tolerance, can anti-locking system there is operational error or the system failure and cause loss of data, to apply in storage server
A kind of Data Protection Technologies.
Due to greatly developing for cloud, explosive growth is presented in data, and automatic duplicating of data technology is applied and given birth to.It is existing
Automatic cloud redundancy technique, user is by setting timer, using the software on main frame, after having arrived the time of setting,
System is backed up automatically.
But this automated back-up mode is more inflexible, when in two timing sections, the incremental data of data storage
Seldom, then the data repeated in front and rear Backup Data twice are just more, such as set back up once at 2 points, 4 points of backups one
Secondary, if within the two hours, data, which do not have, occurs too big change, then it is too many to back up the data of repetition twice, no
Only lose time, the resource of storage system is also taken up, without practical significance.
The content of the invention
The purpose of the embodiment of the present invention is to provide a kind of backup method of data storage, device, equipment and calculates readable machine
Storage medium, to solve the problems, such as that duplicate data is more between backing up twice in the prior art, to improve storage system resources
Utilization rate.
In order to solve the above technical problems, the embodiment of the present invention provides following technical scheme：
On the one hand the embodiment of the present invention provides a kind of backup method of data storage, including：
A pair of the data block 1 of the bitmap of acquisition storage system source disk, the cell of the bitmap and the source disk
Should, to represent the state of each data block of the source disk；
Count after completing last automated back-up, the cell number that the bitmap changes；
According to default data increment threshold value, judge when whether the cell number reaches triggering automated back-up condition pair
The predetermined number answered, the automated back-up condition exceed the data increment threshold value for the incremental data of the source disk；
If so, automated back-up then is carried out to the data stored in presently described source disk.
Optionally, it is described according to default data increment threshold value, it is automatic to judge whether the cell number reaches triggering
Corresponding predetermined number includes during backup condition：
The data increment threshold value inputted according to user, calculating need to be written over data block when reaching the data increment threshold value
Number, using be used as triggering automated back-up condition when the declinable predetermined number of bitmap unit；
Judge whether the cell number reaches the predetermined number.
Optionally, after the statistics completes last automated back-up, cell number bag that the bitmap changes
Include：
In completion once after automated back-up, when detecting that the bitmap changes, counted and alarmed and carried
Show；
The cell number to be changed according to the result of the counting statistics bitmap.
Optionally, it is described to presently described source disk in after the data that store carry out automated back-up, in addition to：
The time that automated back-up is carried out to the source disk, the address for storing Backup Data are sent to user.
On the other hand the embodiment of the present invention provides a kind of back-up device of data storage, including：
Bitmap acquisition module, for obtaining the bitmap of storage system source disk, the cell of the bitmap and the source magnetic
The data block of disk corresponds, to represent the state of each data block of the source disk；
Counting module, for the cell number that after counting and completing last automated back-up, the bitmap changes；
Judge module, for according to default data increment threshold value, judging whether the cell number reaches triggering certainly
Corresponding predetermined number during dynamic backup condition, the automated back-up condition exceed the data for the incremental data of the source disk
Delta threshold；
Automated back-up module, corresponding predetermined number when reaching triggering automated back-up condition for the cell number
When, automated back-up is carried out to the data stored in presently described source disk.
Optionally, the judge module includes：
Computing unit, for the data increment threshold value inputted according to user, calculating needs when reaching the data increment threshold value
The number of data block is written over, to be used as bitmap unit declinable predetermined number during triggering automated back-up condition；
Judging unit, for judging whether the cell number reaches the predetermined number.
Optionally, the counting module is in completion once after automated back-up, when detecting that the bitmap becomes
During change, count simultaneously alarm；The module for the cell number that the bitmap changes is counted according to the result of counting.
Optionally, in addition to：
Sending module, for the time that automated back-up is carried out to the source disk, the address for storing Backup Data to be sent
To user.
The embodiment of the present invention additionally provides a kind of alternate device of data storage, including processor and memory, the place
Reason device realizes the backup side of the data storage as described in preceding any one when being used to perform the computer program stored in the memory
The step of method.
The embodiment of the present invention finally additionally provides a kind of computer-readable recording medium, the computer-readable recording medium
On be stored with the stand-by program of data storage, realized when the stand-by program of the data storage is executed by processor as any one of preceding
The step of backup method of the data storage.
The embodiments of the invention provide a kind of backup method of data storage, the bitmap of acquisition storage system source disk, position
The cell of figure and the data block of source disk correspond, to represent the state of each data block of source disk；Statistics completes upper one
After secondary automated back-up, cell number that bitmap changes；According to default data increment threshold value, judging unit lattice number
Corresponding predetermined number when whether reaching triggering automated back-up condition, automated back-up condition exceed number for the incremental data of source disk
According to delta threshold；If so, automated back-up then is carried out to the data stored in current source disk.
The advantages of technical scheme that the application provides, is, the state of each data block of source disk is recorded using bitmap, by
It is fixed in the size of every piece of data block, the situation of change by detecting bitmap can determine whether currently to change in storage system
Data scale, automated back-up is carried out after incremental data reaches the data increment threshold value pre-set, so as to effectively solving
The too many phenomenon of duplicate data in backing up twice, the operating efficiency of storage system automated back-up is improved, avoid storage system
The wasting of resources of system, be advantageous to be lifted the utilization rate of storage system resources；Data increment threshold value can be set according to user's request
Put, it is user-friendly, the using flexible of storage system is greatly improved, improves the usage experience of user.
In addition, the embodiment of the present invention also directed to the backup method of data storage provide corresponding realization device, equipment and
Computer-readable recording medium, further such that methods described has more practicality, described device, equipment and computer-readable deposit
Storage media has the advantages of corresponding.
Brief description of the drawings
, below will be to embodiment or existing for the clearer explanation embodiment of the present invention or the technical scheme of prior art
The required accompanying drawing used is briefly described in technology description, it should be apparent that, drawings in the following description are only this hair
Some bright embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can be with root
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is a kind of schematic flow sheet of the backup method of data storage provided in an embodiment of the present invention；
Fig. 2 is the schematic diagram that a kind of bitmap provided in an embodiment of the present invention represents source disk data block status；
Fig. 3 is the schematic flow sheet of the backup method of another data storage provided in an embodiment of the present invention；
Fig. 4 is a kind of embodiment structure chart of the back-up device of data storage provided in an embodiment of the present invention；
Fig. 5 is another embodiment structure chart of the back-up device of data storage provided in an embodiment of the present invention.
Embodiment
In order that those skilled in the art more fully understand the present invention program, with reference to the accompanying drawings and detailed description
The present invention is described in further detail.Obviously, 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 are not making creative work premise
Lower obtained every other embodiment, belongs to the scope of protection of the invention.
Term " first ", " second ", " the 3rd " " in the description and claims of this application and above-mentioned accompanying drawing
Four " etc. be for distinguishing different objects, rather than for describing specific order.In addition term " comprising " and " having " and
Their any deformations, it is intended that cover non-exclusive include.Such as contain the process of series of steps or unit, method,
The step of system, product or equipment are not limited to list or unit, but the step of may include not list or unit.
The various non-limiting embodiments of detailed description below the application.
Referring first to Fig. 1, Fig. 1 is that a kind of flow of backup method of data storage provided in an embodiment of the present invention is illustrated
Figure, the embodiment of the present invention may include herein below：
S101：The bitmap of storage system source disk is obtained, the cell of bitmap and the data block of source disk are corresponded, used
To represent the state of each data block of source disk.
Within the storage system, data are all stored on virtual volume, virtual volume be similar to windows systems on C disks,
These virtual volumes, can be referred to as disk by D disks etc., and disk can actually be divided into fritter one by one, that is to say, that disk is drawn
It is divided into multiple data blocks, the size of each data block is fixed as 256KB.
Bitmap is a form for being used for flag data bulk state, the number of the cell of bitmap and the data of disk partition
The number of block is identical, and corresponds.As illustrated in fig. 2, it is assumed that the size of source disk is 1MB, the size of each data block is
256KB, so source disk has been partitioned into 4 small data blocks.Accordingly, bitmap, which is one, has table in 4 cells, each
Data block on cell and source disk is one-to-one.When some data block on source disk is written over, it will be remembered by bitmap
Record is got off, for example, t0 moment, four initial data blocks of source disk, now corresponding bitmap G1It is represented by 1111；
T1 moment, main frame io have write-in (data block that black is filled in figure), bitmap G for the 3rd piece, the 4th piece to source disk2It is represented by
1122, show to be written over by the 3rd block number evidence, the 4th block number evidence, and be stored in G2On.3rd piece of data block and the 4th block number evidence
The data of block are the incremental data of current source disk.
S102：Count after completing last automated back-up, the cell number that bitmap changes.
When the data block of source disk is rewritten, corresponding cell changes in corresponding bitmap, to record number
According to the current state of block.After system last time automated back-up is completed, it can be obtained by detecting the change number of cell in bitmap
Know the capacity for the data block that source disk is written over, that is, obtain the system incremental data after last automated back-up, i.e. source
The data capacity to be changed in disk.For example, when system is in t1Moment carries out an automated back-up, in t2Moment is carried out
Automated back-up, then to t2For the automated back-up at moment, system is in t1The automated back-up at moment is then last automatic for it
Backup.
In completion once after automated back-up, when detecting that bitmap changes, count and alarm；
The cell number to be changed according to the result of counting statistics bitmap.
The purpose for carrying out alarm is to prompt the data of the current source disk of user to have occurred and that rewriting, user Ke Gen
According to the time of the number estimating system automated back-up of alarm, whether automated back-up is completed available for checking system as early as possible, to avoid
System is not backed up, and causes unnecessary loss.
S103：According to default data increment threshold value, when whether judging unit lattice number reaches triggering automated back-up condition
Corresponding predetermined number, if so, then performing S104.
Automated back-up condition can be that the incremental data of source disk exceedes data increment threshold value.
Data increment threshold value is that user enters according to actual conditions such as the states of the configuring condition of storage device and operation task
Row is freely chosen, and the application does not do any restriction to this.
The incremental data of current source disk is weighed using data increment threshold value, i.e. unduplicated number between automated back-up twice
According to size, judge whether to back up with this.
The data increment threshold value inputted according to user, calculating needs for being written over data block when reaching data increment threshold value
Number, to be used as bitmap unit declinable predetermined number during triggering automated back-up condition；Whether judging unit lattice number reaches pre-
If number.
For example, the data increment threshold value pre-set is 300KB, and the size of a data block is 256KB, then extremely
When rare two data blocks are written over, the incremental data of source disk has exceeded data increment threshold value, just can trigger automated back-up bar
Part, that is to say, that when the declinable number of bitmap unit is 2, trigger automated back-up, now, predetermined number is 2, works as detection
When the cell number to be changed into bitmap is 2, data will be automatically copied on backup target disk.
S104：Automated back-up is carried out to the data stored in current source disk.
In technical scheme provided in an embodiment of the present invention, the state of each data block of source disk is recorded using bitmap, by
It is fixed in the size of every piece of data block, the situation of change by detecting bitmap can determine whether currently to change in storage system
Data scale, automated back-up is carried out after incremental data reaches the data increment threshold value pre-set, so as to effectively solving
The too many phenomenon of duplicate data in backing up twice, the operating efficiency of storage system automated back-up is improved, avoid storage system
The wasting of resources of system, be advantageous to be lifted the utilization rate of storage system resources；Data increment threshold value can be set according to user's request
Put, it is user-friendly, the using flexible of storage system is greatly improved, improves the usage experience of user.
Inquired about for the ease of user and verify whether system has carried out automated back-up, to find system due to exception as early as possible
The phenomenon that situation is not backed up, based on above-described embodiment, referring to Fig. 3, may also include：
S105：The address of the time that automated back-up is carried out to source disk, storage Backup Data are sent to user.
The storage address of the time of automated back-up and Backup Data are sent to user, user can detect as early as possible not to be carried out
The situation of automated back-up, be advantageous to the efficiency and accuracy rate of the automated back-up of lifting system.
The embodiment of the present invention provides corresponding realization device also directed to the backup method of data storage, further such that institute
State method and have more practicality.The back-up device of data storage provided in an embodiment of the present invention is introduced below, hereafter retouched
The back-up device for the data storage stated and the backup method of above-described data storage can be mutually to should refer to.
Referring to Fig. 4, Fig. 4 is the back-up device of data storage provided in an embodiment of the present invention under a kind of embodiment
Structure chart, the device may include：
Bitmap acquisition module 401, for obtaining the bitmap of storage system source disk, the cell of bitmap and the number of source disk
Corresponded according to block, to represent the state of each data block of source disk.
Counting module 402, for the cell number that after counting and completing last automated back-up, bitmap changes.
Judge module 403, for according to default data increment threshold value, it is automatic whether judging unit lattice number reaches triggering
Corresponding predetermined number during backup condition, automated back-up condition exceed data increment threshold value for the incremental data of source disk.
Automated back-up module 404, when reaching triggering automated back-up condition for cell number during corresponding predetermined number,
Automated back-up is carried out to the data stored in current source disk.
Optionally, in some embodiments of the present embodiment, referring to Fig. 5, described device can also for example include：
Sending module 405, for the time that automated back-up is carried out to source disk, the address for storing Backup Data to be sent to
User.
Optionally, in other embodiments of the present embodiment, the judge module 403 for example may include：
Computing unit, for the data increment threshold value inputted according to user, calculating needed when reaching data increment threshold value by
The number of rewrite data block, to be used as bitmap unit declinable predetermined number during triggering automated back-up condition；
Judging unit, whether reach predetermined number for judging unit lattice number.
In addition, in some other embodiment, the counting module 402 can be in completion once automated back-up it
Afterwards, when detecting that bitmap changes, count simultaneously alarm；Count what bitmap changed according to the result of counting
The module of cell number.
The function of each functional module of the back-up device of data storage described in the embodiment of the present invention can be real according to the above method
The method specific implementation in example is applied, its specific implementation process is referred to the associated description of above method embodiment, herein no longer
Repeat.
From the foregoing, it will be observed that state of the embodiment of the present invention using the bitmap record each data block of source disk, due to every block number evidence
The size of block is fixed, and the situation of change by detecting bitmap can determine whether the data rule currently to be changed in storage system
Mould, automated back-up is carried out after incremental data reaches the data increment threshold value pre-set, it is standby twice so as to effectively solve
The too many phenomenon of duplicate data in part, the operating efficiency of storage system automated back-up is improved, avoid the resource of storage system
Waste, be advantageous to be lifted the utilization rate of storage system resources；Data increment threshold value can be configured according to user's request, convenient to use
The use at family, the using flexible of storage system is greatly improved, improve the usage experience of user.
The embodiment of the present invention additionally provides a kind of alternate device of data storage, it may include：
Memory, for storing computer program；
Processor, for performing computer program to realize the backup method of as above data storage described in any one embodiment
The step of.
The function of each functional module of the alternate device of data storage described in the embodiment of the present invention can be real according to the above method
The method specific implementation in example is applied, its specific implementation process is referred to the associated description of above method embodiment, herein no longer
Repeat.
The embodiment of the present invention improves the operating efficiency of storage system automated back-up, avoids the resource wave of storage system
Take, be advantageous to be lifted the utilization rate of storage system resources；Data increment threshold value can be configured according to user's request, improve use
The usage experience at family.
The embodiment of the present invention additionally provides a kind of computer-readable recording medium, is stored with the stand-by program of data storage,
As above the backup method of data storage described in any one embodiment when the stand-by program of the data storage is executed by processor
Step.
The function of each functional module of computer-readable recording medium described in the embodiment of the present invention can be real according to the above method
The method specific implementation in example is applied, its specific implementation process is referred to the associated description of above method embodiment, herein no longer
Repeat.
The embodiment of the present invention improves the operating efficiency of storage system automated back-up, avoids the resource wave of storage system
Take, be advantageous to be lifted the utilization rate of storage system resources；Data increment threshold value can be configured according to user's request, improve use
The usage experience at family.
Each embodiment is described by the way of progressive in this specification, what each embodiment stressed be with it is other
The difference of embodiment, between each embodiment same or similar part mutually referring to.For dress disclosed in embodiment
For putting, because it is corresponded to the method disclosed in Example, so description is fairly simple, related part is referring to method part
Explanation.
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.
Above to a kind of backup method of data storage, device, equipment and computer-readable storage provided by the present invention
Medium is described in detail.Specific case used herein is set forth to the principle and embodiment of the present invention, with
The explanation of upper embodiment is only intended to help the method and its core concept for understanding the present invention.It should be pointed out that led for this technology
For the those of ordinary skill in domain, under the premise without departing from the principles of the invention, can also to the present invention carry out it is some improvement and
Modification, these are improved and modification is also fallen into the protection domain of the claims in the present invention.
Claims (10)
- A kind of 1. backup method of data storage, it is characterised in that including：The bitmap of storage system source disk is obtained, the data block of the cell of the bitmap and the source disk is corresponded, used To represent the state of each data block of the source disk；Count after completing last automated back-up, the cell number that the bitmap changes；According to default data increment threshold value, judge whether the cell number reaches corresponding during triggering automated back-up condition Predetermined number, the automated back-up condition exceed the data increment threshold value for the incremental data of the source disk；If so, automated back-up then is carried out to the data stored in presently described source disk.
- 2. the backup method of data storage according to claim 1, it is characterised in that described according to default data increment Threshold value, judge corresponding predetermined number includes when whether the cell number reaches triggering automated back-up condition：The data increment threshold value inputted according to user, calculating needs for being written over data block when reaching the data increment threshold value Number, to be used as bitmap unit declinable predetermined number during triggering automated back-up condition；Judge whether the cell number reaches the predetermined number.
- 3. the backup method of data storage according to claim 1, it is characterised in that the statistics is completed last automatic After backup, the cell number that the bitmap changes includes：In completion once after automated back-up, when detecting that the bitmap changes, count and alarm；The cell number to be changed according to the result of the counting statistics bitmap.
- 4. the backup method of the data storage according to claims 1 to 3 any one, it is characterised in that work as at described Dui After the data stored in the preceding source disk carry out automated back-up, in addition to：The time that automated back-up is carried out to the source disk, the address for storing Backup Data are sent to user.
- A kind of 5. back-up device of data storage, it is characterised in that including：Bitmap acquisition module, for obtaining the bitmap of storage system source disk, the cell of the bitmap and the source disk Data block corresponds, to represent the state of each data block of the source disk；Counting module, for the cell number that after counting and completing last automated back-up, the bitmap changes；Judge module, for according to default data increment threshold value, it is automatic standby to judge whether the cell number reaches triggering Corresponding predetermined number during part condition, the automated back-up condition exceed the data increment for the incremental data of the source disk Threshold value；Automated back-up module is right when reaching triggering automated back-up condition for the cell number during corresponding predetermined number The data stored in presently described source disk carry out automated back-up.
- 6. the back-up device of data storage according to claim 5, it is characterised in that the judge module includes：Computing unit, for the data increment threshold value inputted according to user, calculating needed when reaching the data increment threshold value by The number of rewrite data block, to be used as bitmap unit declinable predetermined number during triggering automated back-up condition；Judging unit, for judging whether the cell number reaches the predetermined number.
- 7. the back-up device of data storage according to claim 5, it is characterised in that the counting module is in completion After automated back-up, when detecting that the bitmap changes, count simultaneously alarm；According to the result of counting Count the module for the cell number that the bitmap changes.
- 8. the back-up device of the data storage according to claim 5 to 7 any one, it is characterised in that also include：Sending module, for the time that automated back-up is carried out to the source disk, the address for storing Backup Data to be sent into use Family.
- 9. a kind of alternate device of data storage, it is characterised in that including processor and memory, the processor is used to perform The backup method of the data storage as described in any one of Claims 1-4 is realized during the computer program stored in the memory The step of.
- 10. a kind of computer-readable recording medium, it is characterised in that storage number is stored with the computer-readable recording medium According to stand-by program, when the stand-by program of the data storage is executed by processor realize as described in any one of Claims 1-4 The step of backup method of data storage.
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