CN108874583A - A kind of data guard method, device and computer readable storage medium - Google Patents
A kind of data guard method, device and computer readable storage medium Download PDFInfo
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- CN108874583A CN108874583A CN201710340938.1A CN201710340938A CN108874583A CN 108874583 A CN108874583 A CN 108874583A CN 201710340938 A CN201710340938 A CN 201710340938A CN 108874583 A CN108874583 A CN 108874583A
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- snapshot
- data
- copy
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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
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F12/00—Accessing, addressing or allocating within memory systems or architectures
- G06F12/02—Addressing or allocation; Relocation
Abstract
The invention discloses a kind of data guard method, device and computer readable storage mediums, belong to field of computer technology, the method includes：When default trigger event occurs, the snapmap table for replicating snapshot is directed toward the address that the data of the source book when snapshot creates are stored as copy mapping table, the snapmap table and the copy mapping table；When the data of the snapshot change, the snapmap table is modified, modified snapmap table is directed toward the storage address of the new data of the snapshot.Using the present invention, for snapshot retain it is a its creation time point copy mapping table, even if it uses rear data to be changed as volume mapping to host, the copy of the snapshot, and the purpose of the rollback according to the copy mapping table of snapshot realization source volume data can be also created at any time.
Description
Technical field
The present invention relates to computer field more particularly to a kind of data guard methods, device and computer-readable storage medium
Matter.
Background technique
With the development of computer technology, the importance of data backup is also gradually highlighted.In initial data backup mode
In, recovery time target (Recovery Time Objective, RTO) and recovery point objectives (Recovery Point
Objective, RPO) it is unable to satisfy the demand of business, and also data backup procedure will affect service feature or even interrupting service.
When business data amount gradually increases and data growth rate constantly accelerates, how to shorten backup window as system
Administrator's issues that need special attention.Therefore, various data backups, Data Protection Technologies come into being.
Snapping technique is exactly one of numerous technology of data copy.Snapshot refers in the premise for not interrupting regular traffic
Under, source data is generated in the consistent data copy sometime put.Snapshot can be read after generating by host, can also be used as
The data backup at some time point, moreover it is possible to be write as book for host.Bat in the principle and daily life of snapping technique
It, can be to be photographed object under fast recording in the state of photo opporunity point by taking pictures according to similar.Since snapping technique can be with wink
Between generate snapshot, by snapping technique, system manager can be realized the data backup of zero backup window, to meet enterprise pair
The requirement of business continuance and data reliability.
In certain scenes, user can build environment using snapshot and test, and this requires snapshots can be mapped to host
It is written and read, the i.e. writeable snapshot of the snapshot that can be read and write.
Existing snapping technique, as shown in Figure 1, can support quickly to create the data copy of source book at any time, and protect
Holding the snapshot is the consistent data sometime put.Over time, it is write as long as the snapshot is non-mapped to host,
Can at any time using the snapshot be created that it is multiple with the consistent snapshot copy of Snapshot time point come using, but if the snapshot by
Host is mapped to write, then the data that the snapshot just not can guarantee when data are created with it are consistent, be also just not used to rollback and
Create snapshot copy.
Summary of the invention
In view of this, the purpose of the present invention is to provide a kind of data guard method, device and computer-readable storage mediums
Matter is write once being mapped to host to solve prior art snapshot, and the data that just not can guarantee when data are created with it are consistent, with
And the problem of being not used to rollback and creation snapshot copy.
It is as follows that the present invention solves technical solution used by above-mentioned technical problem：
According to the first aspect of the invention, a kind of data guard method is provided, the method includes：
When default trigger event occurs, the snapmap table of snapshot is replicated as copy mapping table, the snapmap
The address that the data of source book when table and the copy mapping table are directed toward snapshot creation are stored；
When the data of the snapshot change, the snapmap table is modified, modified snapmap table is directed toward
The storage address of the new data of the snapshot.
Preferably, the default trigger event includes：
Write operation is carried out to the snapshot data；Or
Receive the operational order of creation snapshot copy.
Preferably, described when the data of the snapshot change, modify the snapmap table, modified snapshot
Mapping table is directed toward the storage address of the new data of the snapshot, including：
The snapmap is written and read to host；
When data change generation new data occurs on the snapshot, the mapping item of the snapmap table is modified, institute is made
State the storage address that snapmap table is directed toward the new data.
Preferably, the method also includes：
Receive the instruction of the snapshot copy of creation given time；
The copy of the snapshot of the given time is created as new snapshot, and replicates the copy of the snapshot of the given time
Mapping table of the mapping table as the new snapshot.
Preferably, before the instruction of the snapshot copy for receiving creation given time, the method also includes：
Receive historical data analysis instruction；
The snapshot created at the time of display interface shows different.
According to the second aspect of the invention, a kind of data protecting device is provided, described device includes：
Copy creating module, for when default trigger event occurs, the snapmap table for replicating snapshot to be reflected as copy
The address that the data of source book when firing table, the snapmap table and the copy mapping table are directed toward snapshot creation are stored；
Modified module, it is modified fast for when the data of the snapshot change, modifying the snapmap table
The storage address of the new data of the snapshot is directed toward according to mapping table.
Preferably, the default trigger event includes：
Write operation is carried out to the snapshot data；Or
Receive the operational order of creation snapshot copy.
Preferably, the modified module, including：
Mapping submodule, for the snapmap to be written and read to host；
Submodule is modified, for modifying the snapmap when data change generation new data occurs on the snapshot
The mapping item of table, makes the snapmap table be directed toward the storage address of the new data.
Preferably, described device further includes：
Receiving module, the instruction of the snapshot copy for receiving creation given time；
Replica snapshot creation module, for create the given time snapshot copy as new snapshot, and replicate institute
State mapping table of the copy mapping table of the snapshot of given time as the new snapshot.
Preferably, described device further includes display module：
The receiving module is also used to before receiving the instruction of the copy of historical data of given time, receives history number
According to analysis instruction；
The display module, the snapshot for being created at the time of display interface shows different.
According to the third aspect of the present invention, a kind of computer readable storage medium, the computer-readable storage are provided
Medium is for executing method and step described in first aspect data guard method.
Data guard method, device and the computer readable storage medium of the embodiment of the present invention, for snapshot retain it is a its
It, also can be in office even if it uses rear data to be changed as volume mapping to host in the copy mapping table of creation time point
When the copy of the snapshot, and the purpose of rollback according to the copy mapping table of snapshot realization source volume data are created at quarter.
Detailed description of the invention
Fig. 1 is the schematic diagram for creating snapshot in the prior art；
Fig. 2 is a kind of flow chart for data guard method that the embodiment of the present invention one provides；
Fig. 3 is schematic diagram of the embodiment one in different moments implementing result；
Fig. 4 is a kind of structural schematic diagram of data protecting device provided by Embodiment 2 of the present invention；
Fig. 5 is a kind of flow chart for data guard method that the embodiment of the present invention three provides；
Fig. 6 is schematic diagram of the embodiment three in different moments implementing result；
A kind of structural schematic diagram for data protecting device that Fig. 7 embodiment of the present invention four provides.
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific embodiment
In order to be clearer and more clear technical problems, technical solutions and advantages to be solved, tie below
Drawings and examples are closed, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only
To explain the present invention, it is not intended to limit the present invention.
The embodiment of the present invention one provides a kind of data guard method, referring to Fig. 2, method flow includes：
S201, when default trigger event occurs, replicate the snapmap table of snapshot as copy mapping table, the snapshot
The address that the data of source book when mapping table and the copy mapping table are directed toward snapshot creation are stored：
S202, when the data of the snapshot change, modify the snapmap table, modified snapmap table is directed toward
The storage address of the new data of the snapshot.
It should be noted that step S201 and step S202 can occur simultaneously in practical application.
In a feasible scheme, before step S201, this method further includes：Create the snapshot and snapmap of source book
Table.
In a feasible scheme, which includes：
Write operation is carried out to the source data or the snapshot data；Or
Receive the operational order of creation snapshot copy.
In a feasible scheme, step S202, when the data of the snapshot change, the snapmap is modified
Table, modified snapmap table are directed toward the storage address of the new data of the snapshot, including：
The snapmap is written and read to host；
When data change generation new data occurs on the snapshot, the mapping item of the snapmap table is modified, the snapshot is made
Mapping table is directed toward the storage address of the new data.
Referring to Fig. 3, being the present embodiment in different moments implementing result schematic diagram：
At the t1 moment, snapshot 1 and its snapmap table (not shown) are created for source book；At the t2 moment, created for snapshot 1
Snapshot copy is directed toward the source volume data at t1 moment by copy mapping table, at this point, the data of source book are via the t1 moment
A, b, c, d are updated to a, b, e, f, but the data of snapshot 1 and snapshot copy still point to the source volume data at t1 moment, i.e., with t1 when
The source volume data at quarter is consistent；At the t3 moment, although the data of source book and snapshot 1 are modified, the data quilt of snapshot 1 at this time
It is revised as x, y, c, d, but the copy mapping table of snapshot copy and has not been changed, still point to the source volume data at t1 moment, therefore
The data when data of the snapshot copy are created with snapshot 1 are consistent, and the source volume data at non-present t3 moment.
The data guard method of the present embodiment, for snapshot retain it is a its creation time point copy mapping table, even if
It uses rear data to be changed as volume mapping to host, can also create the copy of the snapshot, Yi Jigen at any time
The purpose of the rollback of source volume data is realized according to the copy mapping table of the snapshot.
On the basis of the above embodiments, second embodiment of the present invention provides a kind of data protecting devices, referring to Fig. 4,
The device includes：
Copy creating module 401 is mapped for when default trigger event occurs, replicating the snapmap table as copy
Table；
Modified module 402, it is modified fast for when the data of the snapshot change, modifying the snapmap table
The storage address of the new data of the snapshot is directed toward according to mapping table.
It should be noted that the movement that copy creating module 401 is executed with modified module 402 can be same in practical application
Shi Fasheng.
In a feasible scheme, which includes：
Write operation is carried out to the snapshot data；Or
Receive the operational order of creation snapshot copy.
In a feasible scheme, the modified module 402, including：
Mapping submodule, for the snapmap to be written and read to host；
Submodule is modified, for modifying the snapmap table when data change generation new data occurs on the snapshot
Item is mapped, the snapmap table is made to be directed toward the storage address of the new data.
In practical application, which may be provided at and independently of External memory equipment existing for host or disk
On, when host needs the data to the snapshot in data protecting device to be written and read, instructed by preset to storage equipment
The snapmap table for calling snapshot, can be realized the read-write to the data on snapshot.
The data protecting device of the present embodiment, for snapshot retain it is a its creation time point copy mapping table, even if
It uses rear data to be changed as volume mapping to host, can also create the copy of the snapshot, Yi Jigen at any time
The purpose of the rollback of source volume data is realized according to the copy mapping table of the snapshot.
On the basis of the above embodiments, the embodiment of the present invention three provides another data guard method, please refers to Fig. 5
And Fig. 6, method flow include：
The snapmap table 1 of S501, the writeable snapshot 1 that specified source book is created at the t1 moment and the snapshot 1.
In practical application, when creating the snapshot 1 of specified source book, data protecting device will create 1 snapshot for the snapshot 1 and reflect
Firing table 1, the snapmap table 1 record the storage position of the data of snapshot 1.Under original state, described in snapmap table direction
The address of the data storage of source book when snapshot creates, that is to say, that the data of snapshot 1 and the data of source book are consistent.
S502, at the t2 moment, snapshot 1 be mapped to host read-write when, replicate snapmap table 1, by the mapping table of duplication
As copy mapping table.
The copy mapping table is directed toward source volume data when snapshot 1 creates, as shown in Figure 6.
S503, snapshot 1 data modified, modified data are stored to new address, while modifying snapmap
Table 1, modified snapmap table 1 are directed toward new address.
At this point, the data of snapshot 1 are modified as a, b, e, f, the snapmap table of snapshot 1 via a, b, c, the d at t1 moment
It is directed toward the new data of snapshot 1, and the copy mapping table of snapshot 1 then still points to the data of the source book at t1 moment.
S504, at the t3 moment, receive historical data analysis instruction.
S505, the snapshot created at the time of display interface shows different.
User can use historical data analysis instruction proposition to the analysis demand of historical data in practical application, at this point,
It the snapshot of alternative different moments can be user and when user has selected optional snapshot at display interface is shown
The option of creation snapshot copy is provided.
In practical application, user can establish a snapshot in modification when modifying every time to source volume data,
As long as the snapshot for each moment creates a replica snapshot, so that it may when user needs analysis of history data, Ke Yixiang
The snapshot that user provides different moments is selected for user.
S506, the instruction for creating the snapshot copy at specified t1 moment is received.
The copy (i.e. snapshot 2) of S507, the snapshot 1 at creation t1 moment, and the copy mapping table for replicating the snapshot 1 is used as and is somebody's turn to do
The mapping table of snapshot 2.
As shown in fig. 6, the t3 moment, when creating copy, that is, snapshot 2 of the snapshot 1 at t1 moment, the copy for replicating snapshot 1 reflects
Firing table operates on it at this point, snapshot 2 can also be used as the new snapshot of t1 moment source book for user, to realize snapshot
After 1 is modified, the rollback of the data of t1 moment source book.
In the present embodiment, when user needs a source book in the data at t1 moment, interface creating snapshot 1 can be passed through
Copy (snapshot 2), the data at source book t1 moment map table index by the copy of snapshot 1 at this time, therefore, directly replicate snapshot 1
Copy mapping table is the snapmap table of snapshot 2, and therefore, the data of source book when the data of snapshot 2 are created with snapshot 1 are identical,
User can read source book in the data at t1 moment by snapshot 2 at this time.
On the basis of the above embodiments, the embodiment of the present invention four provides a kind of data protecting device, please participate in Fig. 7,
The device includes：
Snapshot creation module 701, for creating the snapshot and snapmap table of source book, which is directed toward the snapshot
The address of the data storage of source book when creation；
Copy creating module 702 is mapped for when default trigger event occurs, replicating the snapmap table as copy
Table；
Modified module 703, it is modified fast for when the data of the snapshot change, modifying the snapmap table
The storage address of the new data of the snapshot is directed toward according to mapping table.
In a feasible scheme, which includes：
Write operation is carried out to the snapshot data；Or
Receive the operational order of creation snapshot copy.
In a feasible scheme, the modified module, including：
Mapping submodule, for the snapmap to be written and read to host；
Submodule is modified, for modifying the snapmap table when data change generation new data occurs on the snapshot
Item is mapped, the snapmap table is made to be directed toward the storage address of the new data.
Can the device further include in the scheme of property at one：
Receiving module 704, the instruction of the snapshot copy for receiving creation given time；
Replica snapshot creation module 705, for create the given time snapshot copy as new snapshot, and replicating should
Mapping table of the copy mapping table of the snapshot of given time as the new snapshot.
In a feasible scheme, which further includes display module 706：
The receiving module 704 is also used to before receiving the instruction of the copy of historical data of given time, receives history number
According to analysis instruction；
The display module 706, the snapshot for being created at the time of display interface shows different.
In the present embodiment, when user needs a source book in the data at t1 moment, interface creating snapshot 1 can be passed through
Copy (snapshot 2), data of the source book at the t1 moment are indexed by the copy mapping table of snapshot 1 at this time, therefore, directly replicate snapshot
1 copy mapping table is the snapmap table of snapshot 2, and therefore, the data when data of snapshot 2 are created with snapshot 1 are identical, at this time
User can read source book in the data at t1 moment by snapshot 2.
On the basis of the above embodiments, the embodiment of the present invention four additionally provides a kind of computer readable storage medium, should
Computer readable storage medium is used to execute the method and step of embodiment one and/or embodiment three, and it is to implement that method and step, which is detailed in,
Example one and embodiment three, are not repeating herein.
Preferred embodiments of the present invention have been described above with reference to the accompanying drawings, not thereby limiting the scope of the invention.This
Field technical staff without departing from the scope and spirit of the invention in made by any modifications, equivalent replacements, and improvements, should all this
Within the interest field of invention.
Claims (11)
1. a kind of data guard method, which is characterized in that the method includes：
When default trigger event occurs, replicate the snapmap table of snapshot as copy mapping table, the snapmap table and
The address that the data of source book when the copy mapping table is directed toward snapshot creation are stored；
When the data of the snapshot change, the snapmap table is modified, described in modified snapmap table is directed toward
The storage address of the new data of snapshot.
2. data guard method as described in claim 1, which is characterized in that the default trigger event includes：
Write operation is carried out to the snapshot data；Or
Receive the operational order of creation snapshot copy.
3. data guard method as claimed in claim 1 or 2, which is characterized in that described when the data of the snapshot become
When change, the snapmap table is modified, modified snapmap table is directed toward the storage address of the new data of the snapshot, packet
It includes：
The snapmap is written and read to host；
When data change generation new data occurs on the snapshot, the mapping item of the snapmap table is modified, is made described fast
The storage address of the new data is directed toward according to mapping table.
4. data guard method as claimed in claim 3, which is characterized in that the method also includes：
Receive the instruction of the snapshot copy of creation given time；
The copy of the snapshot of the given time is created as new snapshot, and replicates the copy mapping of the snapshot of the given time
Mapping table of the table as the new snapshot.
5. data guard method as claimed in claim 4, which is characterized in that the snapshot copy for receiving creation given time
Instruction before, the method also includes：
Receive historical data analysis instruction；
The snapshot created at the time of display interface shows different.
6. a kind of data protecting device, which is characterized in that described device includes：
Copy creating module, for when default trigger event occurs, replicating the snapmap table of snapshot as copy mapping table,
The address that the data of source book when the snapmap table and the copy mapping table are directed toward snapshot creation are stored；
Modified module, for modifying the snapmap table when the data of the snapshot change, modified snapshot reflects
Firing table is directed toward the storage address of the new data of the snapshot.
7. data protecting device as claimed in claim 6, which is characterized in that the default trigger event includes：
Write operation is carried out to the snapshot data；Or
Receive the operational order of creation snapshot copy.
8. data protecting device as claimed in claims 6 or 7, which is characterized in that the modified module, including：
Mapping submodule, for the snapmap to be written and read to host；
Submodule is modified, for modifying the snapmap table when data change generation new data occurs on the snapshot
Item is mapped, the snapmap table is made to be directed toward the storage address of the new data.
9. data protecting device as claimed in claim 8, which is characterized in that described device further includes：
Receiving module, the instruction of the snapshot copy for receiving creation given time；
Replica snapshot creation module, for create the given time snapshot copy as new snapshot, and replicate the finger
Mapping table of the copy mapping table for the snapshot that timing is carved as the new snapshot.
10. data protecting device as claimed in claim 9, which is characterized in that described device further includes display module：
The receiving module is also used to before receiving the instruction of the copy of historical data of given time, receives historical data point
Analysis instruction；
The display module, the snapshot for being created at the time of display interface shows different.
11. a kind of computer readable storage medium, which is characterized in that the computer readable storage medium is wanted for perform claim
It asks 1 to method for claim 5 step.
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| CN201710340938.1A CN108874583A (en) | 2017-05-15 | 2017-05-15 | A kind of data guard method, device and computer readable storage medium |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710340938.1A CN108874583A (en) | 2017-05-15 | 2017-05-15 | A kind of data guard method, device and computer readable storage medium |
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| CN201710340938.1A Withdrawn CN108874583A (en) | 2017-05-15 | 2017-05-15 | A kind of data guard method, device and computer readable storage medium |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110362425A (en) * | 2019-06-05 | 2019-10-22 | 黄疆 | Based on the data copy guard method and system for writing copy |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060075200A1 (en) * | 2004-10-06 | 2006-04-06 | Ai Satoyama | Snapshot system |
| CN101093459A (en) * | 2007-07-18 | 2007-12-26 | 华为技术有限公司 | Method and device for protecting snapshot |
| CN103838647A (en) * | 2014-02-17 | 2014-06-04 | 中国科学院计算技术研究所 | Data state transition method and system based on snapshot remapping |
-
2017
- 2017-05-15 CN CN201710340938.1A patent/CN108874583A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060075200A1 (en) * | 2004-10-06 | 2006-04-06 | Ai Satoyama | Snapshot system |
| CN101093459A (en) * | 2007-07-18 | 2007-12-26 | 华为技术有限公司 | Method and device for protecting snapshot |
| CN103838647A (en) * | 2014-02-17 | 2014-06-04 | 中国科学院计算技术研究所 | Data state transition method and system based on snapshot remapping |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110362425A (en) * | 2019-06-05 | 2019-10-22 | 黄疆 | Based on the data copy guard method and system for writing copy |
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