CN107391312A - Data cloud backup method and system - Google Patents
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- CN107391312A CN107391312A CN201710640186.0A CN201710640186A CN107391312A CN 107391312 A CN107391312 A CN 107391312A CN 201710640186 A CN201710640186 A CN 201710640186A CN 107391312 A CN107391312 A CN 107391312A
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- 238000000034 method Methods 0.000 title claims abstract description 44
- 230000000052 comparative effect Effects 0.000 claims abstract description 10
- 230000010076 replication Effects 0.000 claims description 8
- 230000003362 replicative effect Effects 0.000 claims 3
- 238000010586 diagram Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/14—Error detection or correction of the data by redundancy in operation
- G06F11/1402—Saving, restoring, recovering or retrying
- G06F11/1446—Point-in-time backing up or restoration of persistent data
- G06F11/1448—Management of the data involved in backup or backup restore
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- 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
- G06F11/1471—Saving, restoring, recovering or retrying involving logging of persistent data for recovery
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0602—Interfaces specially adapted for storage systems specifically adapted to achieve a particular effect
- G06F3/061—Improving I/O performance
- G06F3/0613—Improving I/O performance in relation to throughput
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0628—Interfaces specially adapted for storage systems making use of a particular technique
- G06F3/0638—Organizing or formatting or addressing of data
- G06F3/064—Management of blocks
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0668—Interfaces specially adapted for storage systems adopting a particular infrastructure
- G06F3/067—Distributed or networked storage systems, e.g. storage area networks [SAN], network attached storage [NAS]
Abstract
The invention discloses a kind of data cloud backup method and system, method to include：After the first instruction is received, when the data for occurring data block in volume to be backed up are written over, the data before being rewritten in copied chunks, while record the distribution of each data block and state on current volume to be backed up；The Comparative result recorded when data rewriting will occur in the distribution of each data block and state on the volume to be backed up of current record, with last volume to be backed up, the data block that state is changed rewrite before data, upload to cloud server terminal and stored.Data cloud backup method of the present invention and system, when the data of the data block in volume to be backed up are written over, just by the data duplication of the data block and upload to cloud server terminal backup；When all data blocks are written in duplicate volume, all data complete backup on volume.Compared with prior art, the inventive method and system avoid a secondary duplication and upload mass data, can reduce bandwidth occupancy, improve multiple-copy rate, reduce time-consuming.
Description
Technical field
The present invention relates to technical field of data backup, more particularly to a kind of data cloud backup method and system.
Background technology
In the prior art, the method for carrying out data cloud backup is, by volume data to be backed up in storage system to replicate
Mode once all uploads to high in the clouds, if, it is necessary to replicate a large amount of when this method runs into data volume to be backed up very big situation
Data, make bandwidth pressure very big, it is very time-consuming.
The content of the invention
It is an object of the invention to provide a kind of data cloud backup method and system, compared with prior art, can reduce bandwidth
Take, accelerate multiple-copy rate, reduce time-consuming.
To achieve the above object, the present invention provides following technical scheme：
A kind of data cloud backup method, including：
After the first instruction is received, when the data for occurring data block in volume to be backed up are written over, the data are replicated
Data before being rewritten in block, while record the distribution of each data block and state on presently described volume to be backed up；
By in the distribution of each data block and state on the volume to be backed up of current record, with the last volume to be backed up
There is the Comparative result recorded during data rewriting, the data before the data block rewriting that state is changed, upload to cloud service
End is stored.
Alternatively, when each data block also data does not occur and is written in the volume to be backed up, record it is presently described treat it is standby
The distribution of the upper each data block of part volume and state.
Alternatively, it is described when the data for occurring data block in volume to be backed up are written over, replicate and rewritten in the data block
Preceding data include：
During writing new data in the data block, while replicate the data before being rewritten in the data block.
Alternatively, in addition to：The distribution of each data block and state, are looked on the volume to be backed up obtained according to current record
Ask whether each data block on presently described volume to be backed up is completed to back up.
Alternatively, in addition to：
After the second instruction is received, each data block in volume to be backed up is replicated successively, by the data after duplication successively on
Cloud server terminal is passed to be stored.
A kind of data cloud standby system, including：
Replication module, for after the first instruction is received, when the data for occurring data block in volume to be backed up are written over,
Replicate the data before being rewritten in the data block；
Logging modle, for after the first instruction is received, when the data for occurring data block in volume to be backed up are written over,
Record the distribution of each data block and state on presently described volume to be backed up；
Uploading module, the distribution of each data block and state on the volume to be backed up by current record, with the last time
The Comparative result recorded when there is data rewriting in the volume to be backed up, the number before the data block rewriting that state is changed
According to uploading to cloud server terminal and stored.
Alternatively, the logging modle is additionally operable to work as each data block in the volume to be backed up and does not occur data also and be written over
When, record the distribution of each data block and state on presently described volume to be backed up.
Alternatively, the replication module is used for when the data for occurring data block in volume to be backed up are written over, described in duplication
Data before being rewritten in data block include：
The replication module is specifically used for during writing new data in the data block, while replicates the data
Data before being rewritten in block.
Alternatively, in addition to：
Enquiry module, distribution and state for each data block on the volume to be backed up that is obtained according to current record, is looked into
Ask whether each data block on presently described volume to be backed up is completed to back up.
Alternatively, in addition to：
Backup module, for after the second instruction is received, each data block in volume to be backed up being replicated successively, after duplication
Data upload to cloud server terminal successively and stored.
As shown from the above technical solution, data cloud backup method provided by the present invention and system, go out when in volume to be backed up
When the data of existing data block are written over, the data before being rewritten in the data block are replicated, while record presently described volume to be backed up
The distribution of upper each data block and state；Then, by the distribution of each data block and state on the volume to be backed up of current record, with
The Comparative result recorded when there is data rewriting in the last volume to be backed up, before the data block that state is changed is rewritten
Data, upload to cloud server terminal and stored.
Data cloud backup method of the present invention and system, when the data of data block in volume to be backed up are written over, just this is counted
According to block data duplication and upload to cloud server terminal backup；When all data blocks are written in volume to be backed up, all numbers on volume
Backed up according to completion.Compared with prior art, data cloud backup method of the present invention and system, avoid a secondary duplication and upload big
Data are measured, bandwidth occupancy can be reduced, improve multiple-copy rate, are reduced time-consuming.
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
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is a kind of flow chart of data cloud backup method provided in an embodiment of the present invention；
Fig. 2 (a) is that the schematic diagram that duplicate volume carries out data cloud backup is treated in the embodiment of the present invention；
Fig. 2 (b) is that the another schematic diagram that duplicate volume carries out data cloud backup is treated in the embodiment of the present invention；
Fig. 2 (c) is that the another schematic diagram that duplicate volume carries out data cloud backup is treated in the embodiment of the present invention；
Fig. 3 is a kind of schematic diagram of data cloud standby system provided in an embodiment of the present invention；
Fig. 4 is a kind of schematic diagram for data cloud standby system that further embodiment of this invention provides.
Embodiment
In order that those skilled in the art more fully understand the technical scheme in the present invention, below in conjunction with of the invention real
The accompanying drawing in example is applied, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described implementation
Example only part of the embodiment of the present invention, rather than whole embodiments.It is common based on the embodiment in the present invention, this area
The every other embodiment that technical staff is obtained under the premise of creative work is not made, should all belong to protection of the present invention
Scope.
Fig. 1 is refer to, the embodiment of the present invention provides a kind of data cloud backup method, including step：
S10：After the first instruction is received, when the data for occurring data block in volume to be backed up are written over, described in duplication
Data before being rewritten in data block, while record the distribution of each data block and state on presently described volume to be backed up.
It should be noted that receiving the method that the first instruction represents to back up when selection is rewritten, that is, pass through following steps
Treat data in duplicate volume and enter backup of racking.
After the first instruction is received, when the data for occurring certain data block in volume to be backed up are written over, i.e., in the data
New data is written with block, then replicates the data before the data block is rewritten, while record each data on presently described volume to be backed up
The distribution of block and state.
In the specific implementation, Snapshot Method can be used, treats on duplicate volume that data are replicated before the rewriting of data block, tool
Body, Snapshot Method during writing new data that is, in the data block, while replicates institute by the way of copy-on-write
State the data before being rewritten in data block.
It should be noted that the distribution of data block refers to distributing position of the data block on volume, the state of data block refers to
Whether data block is written over, i.e., whether data block has been written to new data.Bitmap can be specifically used, is recorded each on volume to be backed up
The distribution of data block and state.
So, after data occur rewriting and replicated in each volume to be backed up, each data block on current volume to be backed up is recorded
Distribution and state, according to record bitmap, can monitor and the distribution situation and state of data block are written on volume, it is ensured that number
According to integrality and backup correctness.
S11：It is described to be backed up with the last time by the distribution of each data block and state on the volume to be backed up of current record
Occur the Comparative result recorded during data rewriting in volume, the data before the data block rewriting that state is changed, upload to cloud
Service end is stored.
Occur according in the distribution of each data block and state on the volume to be backed up under current record, with last volume to be backed up
The Comparative result recorded during data rewriting, contrast are obtained after currently being rewritten compared to the last time, and which data block is written on volume,
Then according to comparing result by this be written into new data data block former data, upload to cloud server terminal and backed up.
When having the data rewriting of data block on each volume to be backed up, using above steps method, enter backup of racking.
In addition, in the present embodiment data cloud backup method, when each data block does not occur data quilt also in the volume to be backed up
During rewriting, the distribution of each data block and state on presently described volume to be backed up are recorded.I.e. it is to be backed up roll out existing data rewriting it
Before, the distribution of each data block and state in volume to be backed up can be first recorded, each data block is not all on current time, volume to be backed up
New data is write, the state of each data block mark is not rewrite.
So be easy to when occurring data rewriting on volume, can the distribution of each data block and state on the volume according to record,
It is determined that the position of data block is written over, so that the data before its rewriting by duplication upload to high in the clouds.
As can be seen that the present embodiment data cloud backup method, when the data of data block in volume to be backed up are written over, just will
The data duplication of the data block simultaneously uploads to cloud server terminal backup；When all data blocks are written in volume to be backed up, institute on volume
There are data to complete backup.Compared with prior art, the present embodiment data cloud backup method, avoid a secondary duplication and upload big
Data are measured, bandwidth occupancy can be reduced, improve multiple-copy rate, are reduced time-consuming.
The present embodiment data cloud backup method, in addition to：Each data on the volume to be backed up obtained according to current record
The distribution of block and state, inquire about whether each data block on presently described volume to be backed up is completed to back up.
In this method, according to the distribution of each data block and state on the volume to be backed up of current record, it can inquire about and monitor
Which data block has backed up, and which is also not backed up, and can inquire about whether each data block on current volume to be backed up is completed to back up.
Enter to rack in a manner of backing up when an instantiation is used and rewritten to the present embodiment data cloud backup method below standby
The process of part is described in detail.
First, within the storage system, when each data block of volume to be backed up is not all written over also, record each on volume to be backed up
The distribution of data block and state.
It refer to shown in Fig. 2 (a), the volume to be backed up in storage system includes four data blocks：1 number block, 2 numbers
Block, 3 number blocks and 4 number blocks.At the t0 moment, each data block of volume to be backed up does not all write new data, now with bitmap
Distribution and the state of each data block are recorded, is expressed as bitmap G1：0000.
At the t1 moment, it refer to shown in Fig. 2 (b), there is a data block to be written in 3 number blocks of volume to be backed up, together
When treat duplicate volume 3 number blocks rewrite before data duplication, and the current t1 moment is recorded with bitmap, it is each in volume to be backed up
The distribution of data block and state, it is expressed as bitmap G2：0010.Then by the way that bitmap G2 and bitmap G1 is contrasted, obtain this and change
It is that 3 number blocks are written over to write, then the data before 3 number blocks of duplication are rewritten upload to cloud server terminal.
At the t2 moment, it refer to shown in Fig. 2 (c), there is another data block to be written in 4 number blocks of volume to be backed up,
Replicate simultaneously volume to be backed up 4 number blocks rewrite before data, and the current t2 moment is recorded with bitmap, it is each in volume to be backed up
The distribution of data block and state, it is expressed as bitmap G3：0011.Then bitmap G3 and bitmap G2 is contrasted, it is 4 to obtain this rewriting
Number block is written over, then by the original data of 4 number blocks of duplication, uploads to cloud server terminal and stored.
According to this process, treat the data block rewritten on duplicate volume and enter backup of racking, when all numbers on volume to be backed up
All it is written over according to block, then each data block is all completed to backup to cloud server terminal, then completes cloud backup to volume to be backed up in storage system.
The present embodiment data cloud backup method,, just can will be original when only data are written over every time using snapshot
Data duplication simultaneously uploads to high in the clouds, for volume data volume to be backed up it is larger when, with existing using the method phase that once all replicates
Than that can reduce bandwidth occupancy, reduce time-consuming.In addition, backing up data to the cloud storage end of cloud service provider offer, one can be spent
Determine expense, and the mode backed up during this method rewriting, the data for not rewriting can reduce cloud relatively and deposit without backup
Store up cost.In addition, this method is managed by bitmap, it is ensured that the integrality of data and the correctness replicated.
Further, the present embodiment data cloud backup method, in addition to：After the second instruction is received, by volume to be backed up
In each data block replicate successively, the data after duplication are uploaded into cloud server terminal successively is stored.The present embodiment data cloud is standby
Part method, it also may be selected to treat duplicate volume and backup of racking entered with overall copy mode.If after receiving the second instruction, represent selection
Duplicate volume is treated with overall copy mode and enters backup of racking, then is replicated each data block in volume to be backed up successively, after duplication
Data disposably upload to cloud server terminal and stored.
For volume data volume to be backed up it is smaller when this cloud backup mode may be selected, and when volume data volume to be backed up is larger
It may be selected to enter backup of racking by the way of backing up when above-mentioned rewriting, bandwidth occupancy can be reduced, reduce time-consuming.Therefore this implementation
Number of cases can flexibly select backup mode, disclosure satisfy that a variety of application demands of user, improve product competition according to cloud backup method
Power.
Fig. 3 is refer to, the embodiment of the present invention also provides a kind of data cloud standby system, including：
Replication module 20, for after the first instruction is received, when the data for data block occur in volume to be backed up are written over
When, replicate the data before being rewritten in the data block；
Logging modle 21, for after the first instruction is received, when the data for data block occur in volume to be backed up are written over
When, record the distribution of each data block and state on presently described volume to be backed up；
Uploading module 22, the distribution of each data block and state on the volume to be backed up by current record, with upper one
The Comparative result recorded when there is data rewriting in the secondary volume to be backed up, the number before the data block rewriting that state is changed
According to uploading to cloud server terminal and stored.
As can be seen that the present embodiment data cloud standby system, including replication module, logging modle and uploading module, when treating
When the data for occurring data block in duplicate volume are written over, the data before being rewritten in the data block are replicated, while record current institute
The distribution of each data block and state on volume to be backed up are stated, then, by point of each data block on the volume to be backed up of current record
The Comparative result recorded when there is data rewriting in cloth and state, with the last volume to be backed up, state is changed
Data before data block rewriting, upload to cloud server terminal and are stored.
The present embodiment data cloud standby system, when the data of data block in volume to be backed up are written over, just by the data block
Data duplication and upload to cloud server terminal backup；When all data blocks are written in volume to be backed up, all data are complete on volume
Into backup.Compared with prior art, the present embodiment data cloud standby system, avoid a secondary duplication and upload mass data,
Bandwidth occupancy can be reduced, improves multiple-copy rate, is reduced time-consuming.
In the present embodiment data cloud standby system, the logging modle 21 is additionally operable to work as each data block in the volume to be backed up
When also data do not occur and being written over, the distribution of each data block and state on presently described volume to be backed up are recorded.I.e. in volume to be backed up
Before there is data rewriting, the distribution of each data block and state in volume to be backed up can be first recorded, at current time, volume to be backed up
Upper each data block does not all write new data, and the state of each data block mark is not rewrite.
So be easy to when occurring data rewriting on volume, can the distribution of each data block and state on the volume according to record,
It is determined that the position of data block is written over, so that the data before its rewriting by duplication upload to high in the clouds.
The replication module 20 is used for when the data for occurring data block in volume to be backed up are written over, and replicates the data block
Data before middle rewriting include：During writing new data in the data block, while replicate and rewritten in the data block
Preceding data.Snapshot Method can be used in the present embodiment, data block on duplicate volume is treated and is replicated, Snapshot Method can be used and write
When the mode that replicates.
Fig. 4 is refer to, the present embodiment data cloud standby system also includes：Enquiry module 23, for being obtained according to current record
The distribution of each data block and state on the volume to be backed up obtained, inquire about whether each data block on presently described volume to be backed up is completed
Backup.By inquiring about the bitmap of record, it can inquire about and monitor which data block has backed up, which is also not backed up, and can inquire about
Whether each data block is completed to back up on current volume to be backed up.
Further, the present embodiment data cloud standby system, in addition to：
Backup module, for after the second instruction is received, each data block in volume to be backed up being replicated successively, after duplication
Data upload to cloud server terminal successively and stored.
The present embodiment data cloud standby system, it also may be selected to treat duplicate volume and backup of racking entered with overall copy mode.If
After receiving the second instruction, represent that selection treats duplicate volume with overall copy mode and enters backup of racking, then will be each in volume to be backed up
Data block is replicated successively, and the data after duplication are disposably uploaded into cloud server terminal is stored.
For volume data volume to be backed up it is smaller when this cloud backup mode may be selected, and when volume data volume to be backed up is larger
It may be selected to enter backup of racking by the way of backing up when above-mentioned rewriting, bandwidth occupancy can be reduced, reduce time-consuming.Therefore this implementation
Example data cloud standby system, can flexibly select backup mode, disclosure satisfy that a variety of application demands of user, improve product competition
Power.
Data cloud backup method provided by the present invention and system are described in detail above.Tool used herein
Body example is set forth to the principle and embodiment of the present invention, and the explanation of above example is only intended to help and understands this hair
Bright method and its core concept.It should be pointed out that for those skilled in the art, the present invention is not being departed from
On the premise of principle, some improvement and modification can also be carried out to the present invention, these are improved and modification also falls into right of the present invention
It is required that protection domain in.
Claims (10)
- A kind of 1. data cloud backup method, it is characterised in that including：After the first instruction is received, when the data for occurring data block in volume to be backed up are written over, replicate in the data block Data before rewriting, while record the distribution of each data block and state on presently described volume to be backed up；To occur in the distribution of each data block and state on the volume to be backed up of current record, with the last volume to be backed up The Comparative result recorded during data rewriting, the data before the data block rewriting that state is changed, uploads to cloud server terminal and enters Row storage.
- 2. data cloud backup method according to claim 1, it is characterised in that when each data block is also in the volume to be backed up When data do not occur and being written over, the distribution of each data block and state on presently described volume to be backed up are recorded.
- 3. data cloud backup method according to claim 1, it is characterised in that it is described work as volume to be backed up in there is data block Data when being written over, replicating the data before being rewritten in the data block includes：During writing new data in the data block, while replicate the data before being rewritten in the data block.
- 4. data cloud backup method according to claim 1, it is characterised in that also include：Obtained according to current record The distribution of each data block and state on the volume to be backed up, inquire about each data block on presently described volume to be backed up whether complete it is standby Part.
- 5. according to the data cloud backup method described in claim any one of 1-4, it is characterised in that also include：After the second instruction is received, each data block in volume to be backed up is replicated successively, the data after duplication are uploaded to successively Cloud server terminal is stored.
- A kind of 6. data cloud standby system, it is characterised in that including：Replication module, for after the first instruction is received, when the data for occurring data block in volume to be backed up are written over, replicating Data before being rewritten in the data block；Logging modle, for after the first instruction is received, when the data for occurring data block in volume to be backed up are written over, recording The distribution of each data block and state on presently described volume to be backed up；Uploading module, the distribution of each data block and state on the volume to be backed up by current record, described in the last time Occur the Comparative result recorded during data rewriting in volume to be backed up, the data before the data block rewriting that state is changed, on Cloud server terminal is passed to be stored.
- 7. data cloud standby system according to claim 6, it is characterised in that the logging modle is additionally operable to treat when described When each data block also data does not occur and is written in duplicate volume, the distribution of each data block and shape on presently described volume to be backed up are recorded State.
- 8. data cloud standby system according to claim 6, it is characterised in that the replication module is used to work as volume to be backed up When the middle data for data block occur are written over, replicating the data before being rewritten in the data block includes：During writing new data in the data block, while replicate the data before being rewritten in the data block.
- 9. data cloud standby system according to claim 6, it is characterised in that also include：Enquiry module, distribution and state for each data block on the volume to be backed up that is obtained according to current record, inquiry are worked as Whether each data block is completed to back up on the preceding volume to be backed up.
- 10. according to the data cloud standby system described in claim any one of 6-9, it is characterised in that also include：Backup module, for after the second instruction is received, each data block in volume to be backed up to be replicated successively, by the number after duplication Stored according to cloud server terminal is uploaded to successively.
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| CN109460323A (en) * | 2018-11-14 | 2019-03-12 | 郑州云海信息技术有限公司 | A kind of method and apparatus that data generate cloud backup |
| CN109660611A (en) * | 2018-12-10 | 2019-04-19 | 浪潮(北京)电子信息产业有限公司 | A kind of date storage method of cloud backup and the data cloud backup method of storage system |
| CN111831472A (en) * | 2019-04-18 | 2020-10-27 | 阿里巴巴集团控股有限公司 | Snapshot creating method and device and electronic equipment |
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| CN109460323A (en) * | 2018-11-14 | 2019-03-12 | 郑州云海信息技术有限公司 | A kind of method and apparatus that data generate cloud backup |
| CN109660611A (en) * | 2018-12-10 | 2019-04-19 | 浪潮(北京)电子信息产业有限公司 | A kind of date storage method of cloud backup and the data cloud backup method of storage system |
| CN109660611B (en) * | 2018-12-10 | 2021-08-31 | 浪潮(北京)电子信息产业有限公司 | Data storage method for cloud backup and data cloud backup method for storage system |
| CN111831472A (en) * | 2019-04-18 | 2020-10-27 | 阿里巴巴集团控股有限公司 | Snapshot creating method and device and electronic equipment |
| CN111831472B (en) * | 2019-04-18 | 2023-12-22 | 阿里云计算有限公司 | Snapshot creation method and device and electronic equipment |
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| CN107391312B (en) | 2020-11-24 |
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