CN110442476A - Data snapshot method, device, equipment and storage medium - Google Patents
Data snapshot method, device, equipment and storage medium Download PDFInfo
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- 238000003860 storage Methods 0.000 title claims abstract description 181
- 238000000034 method Methods 0.000 title claims abstract description 55
- 238000012545 processing Methods 0.000 claims abstract description 13
- 238000004590 computer program Methods 0.000 claims description 17
- 238000004891 communication Methods 0.000 claims description 16
- 230000004044 response Effects 0.000 claims description 16
- 230000005540 biological transmission Effects 0.000 claims description 15
- 238000005520 cutting process Methods 0.000 claims description 4
- 238000013481 data capture Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 18
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- 238000009826 distribution Methods 0.000 description 1
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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
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/14—Error detection or correction of the data by redundancy in operation
- G06F11/1402—Saving, restoring, recovering or retrying
- G06F11/1446—Point-in-time backing up or restoration of persistent data
- G06F11/1458—Management of the backup or restore process
- G06F11/1464—Management of the backup or restore process for networked environments
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/455—Emulation; Interpretation; Software simulation, e.g. virtualisation or emulation of application or operating system execution engines
- G06F9/45533—Hypervisors; Virtual machine monitors
- G06F9/45558—Hypervisor-specific management and integration aspects
Abstract
This application involves data processing fields, specifically used server is realized to storage system data backup, and disclose a kind of data snapshot method, device, equipment and storage medium, this method comprises: receiving the snapshot request that the host is sent, the snapshot request includes the original identification information of the corresponding target of target original volume, and the target original volume is located in the storage system；According to the original identification information of the target, obtain in the corresponding target original volume of the original identification information of the target to snapshot data；According to, to snapshot data, creating the corresponding snapped volume of the target original volume in the target original volume；If the target original volume successfully creates corresponding snapped volume, snapshot completion notice is generated, and the snapshot completion notice is sent to the host, so that the host acknowledgement snapshot is completed, to improve the consistency of different storage system snapshots.
Description
Technical field
This application involves data processing field more particularly to a kind of data snapshot method, device, equipment and storage mediums.
Background technique
Snapshot is the effective ways that a kind of Online storage device prevents loss of data.One function of snapshot be can to
Line number evidence is backed up and is restored on demand.It is extensive that rapid data can be carried out when storing equipment and application failure or file corruption occurring
It is multiple, restore data to the state of some pot life point.Another function of snapshot is to provide one for storage user
Data access channel, when former data carry out application on site processing, the accessible snapshot data of user.
In virtualization usage scenario, a virtual machine may dock a variety of storage systems, such as local storage system,
Strange land storage system.However, data are usually carried out snapshot in storage system, due to different storages by existing snap shot
The snapshot service principle that system provides is different, for some data being distributed in different storage systems, cannot achieve snapshot
The consistency of data consistency, snapshot is poor.Different storage systems are thus directed to, the consistent of different storage system snapshots how is improved
Property becomes urgent problem to be solved.
Summary of the invention
This application provides a kind of data snapshot method, device, equipment and storage mediums, fast to improve different storage systems
According to consistency.
In a first aspect, being used for server, the server and storage system this application provides a kind of data snapshot method
Communication connection, the server are connect with main-machine communication, which comprises
The snapshot request that the host is sent is received, the snapshot request includes the original mark of the corresponding target of target original volume
Know information, the target original volume is located in the storage system；
According to the original identification information of the target, obtain in the corresponding target original volume of the original identification information of the target
To snapshot data；
According to, to snapshot data, creating the corresponding snapped volume of the target original volume in the target original volume；
If the target original volume successfully creates corresponding snapped volume, snapshot completion notice is generated, and the snapshot is complete
It is sent to the host at notice, so that the host acknowledgement snapshot is completed.
Second aspect, present invention also provides a kind of data snapshot devices, are used for server, and the server and storage are
System communication connection, the server are connect with main-machine communication, and described device includes:
Request reception unit, the snapshot request sent for receiving the host, the snapshot request includes that target is original
The corresponding original identification information of target is rolled up, the target original volume is located in the storage system；
Data capture unit, for obtaining the original identification information pair of the target according to the original identification information of the target
In the target original volume answered to snapshot data；
Snapshot creating unit, for according to, to snapshot data, creating the target original volume in the target original volume
Corresponding snapped volume；
It notifies transmission unit, if successfully creating corresponding snapped volume for the target original volume, generates snapshot and complete to lead to
Know, and the snapshot completion notice is sent to the host, so that the host acknowledgement snapshot is completed.
The third aspect, present invention also provides a kind of computer equipment, the computer equipment includes memory and processing
Device；The memory is for storing computer program；The processor, for executing the computer program and described in the execution
Such as above-mentioned data snapshot method is realized when computer program.
Fourth aspect, present invention also provides a kind of computer readable storage medium, the computer readable storage medium
It is stored with computer program, the computer program makes the processor realize such as above-mentioned data snapshot when being executed by processor
Method.
This application discloses a kind of data snapshot method, device, equipment and storage medium, data provided by the above embodiment
Snapshot Method, the snapshot request sent by server receiving host；Server in storage system target original volume to fast
Snapshot processing is carried out according to data, so as to carry out snapshot service to each storage system, and can be realized and be to different storages
System carries out consistency snapshot operation, improves the consistency of different storage system snapshots.
Detailed description of the invention
Technical solution in ord to more clearly illustrate embodiments of the present application, below will be to needed in embodiment description
Attached drawing is briefly described, it should be apparent that, the accompanying drawings in the following description is some embodiments of the present application, general for this field
For logical technical staff, without creative efforts, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the application scenarios schematic diagram of data snapshot method provided by the embodiments of the present application；
Fig. 2 is a kind of schematic flow diagram for data snapshot method that embodiments herein provides；
Fig. 3 is a kind of schematic flow diagram for data snapshot method that another embodiment of the application provides；
Fig. 4 is a kind of schematic flow diagram for data snapshot method that embodiments herein provides；
Fig. 5 is a kind of step schematic flow diagram for data snapshot method that the application another embodiment provides；
Fig. 6 is a kind of step schematic flow diagram for data snapshot method that the another embodiment of the application provides；
Fig. 7 is the sub-step schematic flow diagram of the data snapshot method in Fig. 5；
Fig. 8 is the sub-step schematic flow diagram of the data snapshot method in Fig. 5；
Fig. 9 is a kind of schematic block diagram of data snapshot device provided by the embodiments of the present application；
Figure 10 is a kind of schematic block diagram for data snapshot device that another embodiment of the application provides；
Figure 11 is the schematic block diagram of the subelement of data snapshot device in Figure 10；
Figure 12 is a kind of structural representation block diagram for computer equipment that one embodiment of the application provides.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present application, technical solutions in the embodiments of the present application carries out clear, complete
Site preparation description, it is clear that described embodiment is some embodiments of the present application, instead of all the embodiments.Based on this Shen
Please in embodiment, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, shall fall in the protection scope of this application.
Flow chart shown in the drawings only illustrates, it is not necessary to including all content and operation/step, also not
It is that must be executed by described sequence.For example, some operation/steps can also decompose, combine or partially merge, therefore practical
The sequence of execution is possible to change according to the actual situation.
Embodiments herein provides a kind of data snapshot method, device, computer equipment and storage medium.Data are fast
It can be used for server according to method, to improve the consistency of different storage system snapshots.
With reference to the accompanying drawing, it elaborates to some embodiments of the application.In the absence of conflict, following
Feature in embodiment and embodiment can be combined with each other.
Referring to Fig. 1, Fig. 1 is the application scenarios schematic diagram of data snapshot method provided by the embodiments of the present application.The implementation
The data snapshot method of example can be applied to storage environment.
As shown in Figure 1, in one embodiment, storage environment may include host layer, middleware layer and storage system layer.It is main
It is communicated to connect between machine layer and middleware layer, middleware layer and storage system layer communication connection.
Specifically, host layer may include multiple main frames, any one in multiple hosts includes at least one
Host application.The host application can issue operational order to middleware layer, and receive the result that the middleware layer returns.
Middleware layer may include server, execute the operational order that host is sent, and provide to the storage in storage system
Source is managed collectively.
Storage system layer includes multiple storage systems, and multiple storage system applications are in storing data.Multiple storage systems
System can be identical structure, be also possible to different structures.In one embodiment, as shown in Figure 1, storage system includes three,
Respectively storage system 1, storage system 2 and storage system 3.Storage system 1, storage system 2 and storage system 3 are to be mutually isolated
Two storage systems, storage system 1 manage memory space, storage system 2 manage memory space and storage system 3 manage
Memory space right angle it is mutually indepedent.In other embodiments, the quantity of storage system may be set to be other suitable numbers,
Such as 2,4 or more.
Specifically, virtual storage volume can be created in storage system.Virtual storage volume is created within the storage system, can be passed through
Command line mode or graphical interfaces mode are realized.When creating virtual storage volume, title, the storage of specified virtual storage volume are at least needed
The original identification information of volume.The original identification information of storage volume and the title of storage volume correspond.In logic, storage volume is one
The continuous memory space of sector address, is alternatively referred to as original volume.
In virtual platform, host can be virtual machine.In physics machine platform, host can be server.Below
It is illustrated by virtual machine instance of host.
In above-mentioned storage environment, the realization of consistency snapshot can be realized independent of storage system by server.Such as
This, server can be managed collectively the storage resource of all storage systems, snapshot operation can be carried out to each storage system,
And it can guarantee the consistency of storing data snapshot in different storage systems.
Referring to Fig. 2, Fig. 2 is a kind of step schematic flow diagram of data snapshot method provided by the embodiments of the present application.It should
Data snapshot method can be applied to server, and server and storage system communicate to connect, and server is connect with main-machine communication.
As shown in Fig. 2, the data snapshot method, specifically includes: step S201 to step S204.
S201, the snapshot request that the host is sent is received.
Specifically, the snapshot request includes the original identification information of the corresponding target of target original volume, target original volume position
In storage system.It should be understood that each storage system includes multiple original volumes for storing data.Original mark letter
For breath for identifying original volume, each original volume has a unique original identification information, i.e., original identification information and original volume
It corresponds.Illustratively, original identification information may include identity (Identification, referred to as " ID "), root
An original volume can be uniquely determined according to the identity of original volume.
Wherein, target original volume is that host needs to establish the original of snapshot to some in storage system or certain original volumes
Volume.The original identification information of target is the original identification information of target original volume.
Host can send snapshot request to server according to preset snapshot policy.What server receiving host was sent
Snapshot request, according to the snapshot request, server can establish snapshot for the target original volume of storage system.Preset snapshot
Strategy can be configured according to practical application, for example, be set as every 10 minutes to server send a snapshot request or
Continuously snapshot request etc. is sent to server.
S202, according to the original identification information of the target, it is original to obtain the corresponding target of the original identification information of the target
In volume to snapshot data.
Since original identification information and original volume correspond, thus according to the original identification information of target in snapshot request
An original volume corresponding with the original identification information of the target can be uniquely determined, identified original volume is original as target
Volume.Server obtains target original volume corresponding with the original identification information of target after the snapshot request for receiving host transmission
It is corresponding to snapshot data, to create snapped volume corresponding with target original volume on the server.
In one embodiment, described according to the original identification information of the target, obtain the original identification information pair of the target
In the target original volume answered to snapshot data, comprising:
According to the original identification information of the target, the original identification information of original volume in the storage system is traversed；If institute
It states and there is original identification information identical with the original identification information of the target in storage system, it will be with the original mark of the target
The corresponding original volume of the identical original identification information of information is as target original volume；If in the storage system there is no with it is described
The identical original identification information of the original identification information of target generates prompt information, and the prompt information is sent to the master
Machine.
Specifically, the prompt information is for prompting host to be not present within the storage system and the original mark of the target
The identical original identification information of information is known, to prompt host to retransmit new snapshot request, until depositing in the storage system
In original identification information identical with the original identification information of the target.Illustratively, prompt information can be for " identification information is not
In the presence of ".
In one embodiment, described according to the original identification information of the target, obtain the original identification information pair of the target
In the target original volume answered to snapshot data before, further includes: asked if receiving the snapshot that at least two hosts are sent
It asks, con current control is carried out at least two host, the con current control is for only allowing server according to a host
The snapshot request of transmission carries out snapshot processing to the data stored in target original volume.It is described to be believed according to the original mark of the target
Breath, obtain in the corresponding target original volume of the original identification information of the target to snapshot data, specifically include: according to concurrently controlling
Result processed and the original identification information of the target, obtain in the corresponding target original volume of the original identification information of the target to fast
According to data.Purpose using above-mentioned concurrent mutual exclusion control is to cause business in order to avoid occurring going out active to the update of data
The problem of disorder.
S203, according to, to snapshot data, creating the corresponding snapped volume of the target original volume in the target original volume.
Specifically, obtain in target original volume after snapshot data, in target original volume to snapshot data into
Row snapshot, thus creation snapped volume corresponding with target original volume.
If S204, the target original volume successfully create corresponding snapped volume, snapshot completion notice is generated, and will be described fast
It is sent to the host according to completion notice, so that the host acknowledgement snapshot is completed.
Specifically, the executive condition of snapshot can be monitored by the oracle listener in server, it is former listening to the target
Begin in volume after the completion of the execution of snapshot data snapshot, generate snapshot completion notice, and the snapshot completion notice be sent to master
Machine.Host can determine that the snapshot work of the server is completed after receiving snapshot completion notice.
Data snapshot method provided by the above embodiment, the snapshot request sent by server receiving host；Server
To in storage system target original volume to snapshot data carry out snapshot processing, so as to each storage system carry out snapshot
Service, and can be realized and consistency snapshot operation is carried out to different storage systems, improve the consistent of different storage system snapshots
Property.
Referring to Fig. 3, Fig. 3 is a kind of step exemplary flow for data snapshot method that another embodiment of the application provides
Figure.The data snapshot method can be applied to server, and server and storage system communicate to connect, and server and main-machine communication connect
It connects.
As shown in figure 3, the data snapshot method, further includes:
S301, receive the snapshot instruction that the storage system is sent, the snapshot instruction be the storage system in response to
What the write data requests of the host were sent.
Specifically, the snapshot instruction includes the original identification information to snapped volume.Write data requests are by host according to mesh
The original identification information of mark write-in volume and data to be written generate.Wherein, is for data to be written to be written in target write-in volume
Original volume.The original identification information of target write-in volume is for identifying target write-in volume.According to the original mark of target write-in volume
Information can uniquely determine an original volume, which is written as target and is rolled up.
Specifically, storage system receiving host send write data requests, write data request by the host according to
The original identification information of target write-in volume and data to be written generate.Storage system receives the write data requests of host transmission
Afterwards, snapshot is sent in response to the write data requests to instruct to server.Wherein, snapshot instruction includes the original mark to snapped volume
Information.Correspondingly, server can receive snapshot instruction, snapshot is carried out to treat snapped volume.
It should be understood that referring to that storage equipment after the write data requests for receiving host transmission, needs to take after snapped volume
Business device carries out the original volume of snapshot processing.It in one embodiment, can be target write-in volume to snapped volume.
S302, according to the original identification information to snapped volume, creation is with described to the corresponding snapped volume of snapped volume.
Specifically, according to snapshot instruct in the original identification information to snapped volume can uniquely determine one with should to fast
According to the corresponding original volume of original identification information of volume, using identified original volume as to snapped volume.Server is deposited receiving
After storing up the snapshot instruction that equipment is sent, according to the original identification information to snapped volume, creation with it is described corresponding to snapped volume
Snapped volume.
Referring to Fig. 4, in one embodiment, original identification information of the basis to snapped volume, creation is with described to fast
According to rolling up in corresponding snapped volume, including sub-step S3021 and sub-step S3022.
S3021, the original identification information according to snapped volume are obtained described to the target snapshot number in snapped volume
According to.
Specifically, according to the original identification information to snapped volume, the original of original volume in the storage system is traversed
Identification information；If there is original identification information identical with the original identification information to snapped volume in the storage system,
Original volume that original identification information identical with the original identification information to snapped volume is corresponding is as to snapped volume.
S3022, according to described to the target snapshot data in snapped volume, creation is with described to the corresponding snapshot of snapped volume
Volume.
Specifically, snapshot is carried out to the target snapshot data after obtaining the target snapshot data after snapshot with regard in, thus
Creation is with described to the corresponding snapped volume of snapped volume.
In one embodiment, after step S3022, further includes:
If described successfully create corresponding snapped volume to snapped volume, snapshot success notification is generated, and the snapshot is successful
Notice is sent to the storage equipment, so that storage equipment confirmation snapshot is completed.
The data snapshot method of above-described embodiment, when storage system receives the write data requests of host transmission, storage
System can respond write data requests transmission snapshot and instruct to server, and server receives snapshot instruction, and according to described fast
Snapshot is carried out to the data being newly written in storage system according to instruction, to improve the efficiency of snapshot operation, is avoided to a large amount of numbers
Occurs Caton when according to progress snapshot or temporarily without response phenomenon.
Referring to Fig. 5, Fig. 5 is a kind of step exemplary flow for data snapshot method that the application another embodiment provides
Figure.The data snapshot method is used for storage system.The storage system is connect with server communication, the storage system and host
Communication connection.
As shown in figure 5, the data snapshot method, comprising: step S401 to S403.
S401, the write data requests that the host is sent are received.
Specifically, write data request includes the original identification information of data to be written and volume to be written.Each storage
System includes multiple original volumes for storing data.For identifying original volume, each original volume has original identification information
One unique original identification information, i.e., original identification information and original volume correspond.Illustratively, original identification information can
To include identity (Identification, referred to as " ID "), one can be uniquely determined according to the identity of original volume
A original volume.
Wherein, volume to be written is the original volume for needing to be written into data write-in in storage system.Volume to be written it is original
Identification information is the original identification information of volume to be written.
S402, according to the original identification information of the volume to be written, the volume to be written is written into the data to be written
In.
Illustratively, the original identification information of volume to be written is " 102D ", and storage equipment can determine only according to " 102D "
A original volume corresponding with " 102D " one by one, using " 102D " the corresponding original volume as volume to be written, and will be described to be written
Data are written in the volume to be written.
Referring to Fig. 6, in one embodiment, the original identification information according to the volume to be written will be described to be written
It further include step S101 and S102 before entering in the data write-in volume to be written.
S101, the processing of block cutting label is carried out for storing the storage region of data in the volume to be written, to obtain
Storage region and corresponding area identification.
Specifically, the area identification of each storage region label is different.The area identification of storage region label can be volume
Number, or other attributes, but must be unique.In one embodiment, the storage region size divided is all identical, the size
Area-size can be denoted as.It should be understood that in other embodiments, the storage region size divided can also be different.
S102, according to the storage region and corresponding area identification, create bitmap table.
Specifically, bitmap table is bitmap table.
Referring to Fig. 6, in one embodiment, the original identification information according to the volume to be written will be described
After data to be written are written in the volume to be written, further includes:
If the type of step S103, the described data to be written is file content data, determine that the data to be written are to have
Imitate data；If the type of step S104, the described data to be written is filesystem information, determine that the data to be written have to be non-
Imitate data；Step S105, record whether the data to be written are valid data in the bitmap table.
Specifically, the type of data to be written includes file content data and filesystem information.Write data request
It may include the type for having data to be written.It is of course also possible to be parsed to data to be written, to judge data to be written
Type.
Specifically, recording the memory block in bitmap table when data are written in the storage region into volume to be written every time
Whether domain houses valid data.
For example, bitmap table can be divided into several grids, each grid records whether a storage region is stored
Valid data.Such as 0 indicate valid data, 1 indicate non-effective data.Wherein, non-effective data includes idle data or nothing
Imitate data.
Illustratively, an idle grid is found in bitmap table, and the area of the storage region is recorded in the grid
Domain identifier, when not storing valid data in the storage region in volume to be written, which is identified as " 1 ".It is written into number
According to the storage region being written in the volume to be written, if the data to be written are valid data, it is right in the bitmap table to update
The data area mark answered, i.e., be revised as " 0 " for the mark of the grid.Depositing in the volume to be written is written when being written into data
When storage area domain and the data to be written are non-effective data, corresponding data area mark is remained unchanged in the bitmap table.
As shown in fig. 7, in one embodiment, write data request includes that target area identifies.It is described according to
The volume to be written is written, in the bitmap table described in record in the data to be written by the original identification information that volume is written
Whether data to be written are valid data, comprising: sub-step S4021 to S4023.
S4021, it is identified according to the target area, determines target storage domain.
Specifically, each storage region is corresponding with only one area identification.It is marked by the target area of write data requests
Know, can determine target storage domain.
If S4022, the size of data to be written are not more than the free area in the target storage domain, will be described to be written
Enter data and the target storage domain is written.
Illustratively, if the size of data to be written is less than or equal to the free area size in target storage domain, then it represents that
Target storage domain has the storage capacity for storing data to be written, is written into data write-in target storage domain at this time.
If S4023, the size of data to be written are greater than the free area in the target storage domain, will be described to be written
Other idle memory regions of the volume to be written are written in data.
Specifically, if the size of data to be written is greater than the free area size in the target storage domain, to be written
Enter and find an idle memory region in volume, the size of the idle memory region is not less than the size of data to be written.By institute
It states data to be written and the idle memory region is written.
S403, in response to write data request, send snapshot instruct to the server so that the server according to
The original identification information to snapped volume, creation is with described to the corresponding snapped volume of snapped volume.
Specifically, the snapshot instruction includes the original identification information to snapped volume.Specifically, when user needs storing
When data being written in system, write data requests can be sent to storage system by host.Storage system receives this and writes data
After request, responds write data requests transmission snapshot and instruct to the server.Server receives the fast of storage system transmission
After instruction, according to the original identification information to snapped volume, creation is with described to the corresponding snapped volume of snapped volume.
As shown in figure 8, in one embodiment, being requested in response to write data, sends snapshot and instructs to the server,
So that the server is according to the original identification information to snapped volume, creation with described to the corresponding snapped volume of snapped volume,
It specifically includes: sub-step S4031 and S4033.
S4031, judge whether the data to be written are valid data.
Specifically, judging that the whether effective judging result of the data to be written includes two kinds: the data to be written are
Valid data；The data to be written are non-effective data.Illustratively, can according to the type of data to be written, judge to
Be written whether data are valid data.If the type of the data to be written is file content data, the number to be written is determined
According to for valid data；If the type of the data to be written is filesystem information, determine that the data to be written are non-effective
Data.
S4032, if it is determined that the data to be written be valid data, in response to write data request, send snapshot refer to
It enables to the server, so that the server creates and described to snapshot according to the original identification information to snapped volume
Roll up corresponding snapped volume.
Specifically, in order to avoid the meaningless data of snapshot server, when storage system determines that the data to be written are
It when valid data, is requested in response to write data, sends snapshot and instruct to the server, so that the server is according to institute
State the original identification information to snapped volume, creation with described to the corresponding snapped volume of snapped volume, to improve snapshot server number
According to when resource utilization.
S4033, if it is determined that the data to be written be non-effective data, refuse to respond in write data request.
When storage system determines the data to be written for valid data, refuses to respond and requested in write data, this
When, server will not send snapshot and instruct to the server.Thus the server will not carry out snapshot to the data to be written,
Avoid the data that snapshot is nonsensical.
The data snapshot method of above-described embodiment, when storage system receives the write data requests of host transmission, storage
System can respond write data requests transmission snapshot and instruct to server, and server receives snapshot instruction, and according to described fast
Snapshot is carried out to the data being newly written in storage system according to instruction, to improve the efficiency of snapshot operation, is avoided to a large amount of numbers
Occurs Caton when according to progress snapshot or temporarily without response phenomenon.In addition, the data snapshot method, when the number to be written that host is sent
When according to for valid data, storage equipment requests in response to write data and sends snapshot and instruct to the server, the clothes
Device be engaged according to the original identification information to snapped volume, creates with described to the corresponding snapped volume of snapped volume, to avoid taking
The business meaningless data of device snapshot, improve resource utilization when snapshot server data, while can be improved the clothes of server
Business response speed.
Referring to Fig. 9, Fig. 9 is that embodiments herein also provides a kind of schematic block diagram of data snapshot device, the number
According to fast photographing device for executing any one of aforementioned data snapshot method.Wherein, which can be configured at server
In.Wherein, server can be independent server, or server cluster.
As shown in figure 9, data snapshot device 500 includes: request reception unit 501, data capture unit 502, snapshot wound
Build unit 503 and notice transmission unit 504.
Request reception unit 501, the snapshot request sent for receiving the host, the snapshot request include target original
Begin to roll up the corresponding original identification information of target, the target original volume is located in the storage system；
Data capture unit 502, for obtaining the original identification information of the target according to the original identification information of the target
In corresponding target original volume to snapshot data；
Original snapshot unit 503, for according to, to snapshot data, it is original creating the target in the target original volume
Roll up corresponding snapped volume；
It notifies transmission unit 504, if successfully creating corresponding snapped volume for the target original volume, generates snapshot and complete
Notice, and the snapshot completion notice is sent to the host, so that the host acknowledgement snapshot is completed.
In one embodiment, data snapshot device 500 further includes instruction receiving unit 505 and snapshot creating unit 506.
Instruction receiving unit 505, the snapshot instruction sent for receiving the storage system, the snapshot instruction include to
The original identification information of snapped volume, the snapshot instruction are that the storage system is sent in response to the write data requests of the host
's；
Snapshot creating unit 506, for according to original identification information to snapped volume, creation with it is described corresponding to snapped volume
Snapped volume.
In one embodiment, snapshot creating unit 506 includes data acquisition subelement 5061 and data snapshot subelement
5062。
Data acquisition subelement 5061, for obtaining described to snapshot according to the original identification information to snapped volume
Target snapshot data in volume.
Data snapshot subelement 5062, for according to described to the target snapshot data in snapped volume, creation with it is described to
The corresponding snapped volume of snapped volume.
Referring to Fig. 10, Figure 10 is that another embodiment of the application provides a kind of schematic block diagram of data snapshot device, it should
Data snapshot device is for executing any one of aforementioned data snapshot method.Wherein, which, which can be configured at, is used for
Storage system, the storage system are connect with server communication, and the storage system is connect with main-machine communication.
As shown in Figure 10, data snapshot device 600 includes: data receipt unit 601, data write unit 602 and instruction
Transmission unit 603.
Data receipt unit 601, the write data requests sent for receiving the host, write data request include to
The original identification information of data and volume to be written is written；
Data write unit 602 writes the data to be written for the original identification information according to the volume to be written
Enter in the volume to be written；
Instruction sending unit 603 sends snapshot and instructs to the server, institute for requesting in response to write data
Stating snapshot instruction includes the original identification information to snapped volume, so that the server is according to the original mark to snapped volume
Information, creation is with described to the corresponding snapped volume of snapped volume.
Referring to Fig. 10, in one embodiment, data snapshot device 600 further includes zone marker unit 610 and bitmap wound
Build unit 620.
Zone marker unit 610, for carrying out cutting mark for storing the region of data in the volume to be written
Reason, to obtain storage region and area identification corresponding with the storage region.
Bitmap creating unit 620, for creating bitmap table according to the storage region and corresponding area identification.
Referring to Figure 10, in one embodiment, data snapshot device 600 further includes the first determination unit 630, second
Determination unit 640 and data record unit 650.
First determination unit 630 determines described to be written if the type for the data to be written is file content data
Entering data is valid data.
Second determination unit 640 determines described to be written if the type for the data to be written is filesystem information
Entering data is non-effective data；
Data record unit 650, for recording whether the data to be written are valid data in the bitmap table.
Such as Figure 11, in one embodiment, write data request includes that target area identifies.Data write unit 602 wraps
It includes region and determines that subelement 6022 and the second write-in subelement 6023 is written in subelement 6021, first.
Region determines subelement 6021, for identifying according to the target area, determines target storage domain；
First write-in subelement 6022, if being not more than the sky in the target storage domain for the size of data to be written
The target storage domain is written in the data to be written by not busy region；
Second write-in subelement 6023, if being greater than the free time in the target storage domain for the size of data to be written
Other idle memory regions of the volume to be written are written in the data to be written by region.
It should be noted that it is apparent to those skilled in the art that, for convenience of description and succinctly,
The data snapshot device of foregoing description and the specific work process of each unit, can be with reference in aforementioned data Snapshot Method embodiment
Corresponding process, details are not described herein.
Above-mentioned data snapshot device can be implemented as a kind of form of computer program, which can be such as
It is run in computer equipment shown in Figure 12.
Figure 12 is please referred to, Figure 12 is a kind of schematic block diagram of computer equipment provided by the embodiments of the present application.The calculating
Machine equipment can be server or terminal.
Refering to fig. 12, which includes processor, memory and the network interface connected by system bus,
In, memory may include non-volatile memory medium and built-in storage.
Non-volatile memory medium can storage program area and computer program.The computer program includes program instruction,
The program instruction is performed, and processor may make to execute a kind of data snapshot method.
Processor supports the operation of entire computer equipment for providing calculating and control ability.
Built-in storage provides environment for the operation of the computer program in non-volatile memory medium, the computer program quilt
When processor executes, processor may make to execute a kind of data snapshot method.
The network interface such as sends the task dispatching of distribution for carrying out network communication.It will be understood by those skilled in the art that
Structure shown in Figure 12, only the block diagram of part-structure relevant to application scheme, is not constituted to application scheme
The restriction for the computer equipment being applied thereon, specific computer equipment may include more more or fewer than as shown in the figure
Component perhaps combines certain components or with different component layouts.
It should be understood that processor can be central processing unit (Central Processing Unit, CPU), it should
Processor can also be other general processors, digital signal processor (Digital Signal Processor, DSP), specially
With integrated circuit (Application Specific Integrated Circuit, ASIC), field programmable gate array
(Field-Programmable Gate Array, FPGA) either other programmable logic device, discrete gate or transistor are patrolled
Collect device, discrete hardware components etc..Wherein, general processor can be microprocessor or the processor be also possible to it is any often
The processor etc. of rule.
Wherein, the processor is for running computer program stored in memory, to realize following steps:
The snapshot request that the host is sent is received, the snapshot request includes the original mark of the corresponding target of target original volume
Know information, the target original volume is located in the storage system；According to the original identification information of the target, the target is obtained
In the corresponding target original volume of original identification information to snapshot data；According in the target original volume to snapshot data,
Create the corresponding snapped volume of the target original volume；If the target original volume successfully creates corresponding snapped volume, snapshot is generated
Completion notice, and the snapshot completion notice is sent to the host, so that the host acknowledgement snapshot is completed.
In one embodiment, the processor is also used to realize:
The snapshot instruction that the storage system is sent is received, the snapshot instruction includes the original mark letter to snapped volume
Breath, the snapshot instruction are that the storage system is sent in response to the write data requests of the host；According to snapped volume
Original identification information, creation is with described to the corresponding snapped volume of snapped volume.
In one embodiment, the processor is being realized according to original identification information to snapped volume, creation with it is described
When snapped volume corresponding snapped volume, for realizing:
According to the original identification information to snapped volume, obtain described to the target snapshot data in snapped volume；According to
The target snapshot data in snapped volume, creation is with described to the corresponding snapped volume of snapped volume.
In one embodiment, the processor is also used to realize:
The write data requests that the host is sent are received, write data request includes data to be written and volume to be written
Original identification information；According to the original identification information of the volume to be written, the volume to be written is written into the data to be written
In；It is requested in response to write data, sends snapshot and instruct to the server, the snapshot instruction includes the original to snapped volume
Beginning identification information, so that the server creates and described to snapped volume pair according to the original identification information to snapped volume
The snapped volume answered.
In one embodiment, the processor is realizing the original identification information according to the volume to be written, will
Before the data to be written are written in the volume to be written, it is also used to realize:
To in the volume to be written for store data region carry out the processing of cutting label, with obtain storage region and with
The corresponding area identification of the storage region；According to the storage region and corresponding area identification, bitmap table is created.
In one embodiment, the processor is realizing the original identification information according to the volume to be written, will
After the data to be written are written in the volume to be written, it is also used to realize:
If the type of the data to be written is file content data, determine that the data to be written are valid data；If
The type of the data to be written is filesystem information, determines that the data to be written are non-effective data；In the bitmap
Record whether the data to be written are valid data in table.
In one embodiment, write data request includes that target area identifies；The processor is realizing described
According to the original identification information of the volume to be written, when the data to be written are written in the volume to be written, for realizing:
It is identified according to the target area, determines target storage domain；If the size of data to be written is no more than described
The target storage domain is written in the data to be written by the free area in target storage domain；If the data to be written
Size is greater than the free area in the target storage domain, and the data to be written are written to other free time of the volume to be written
Storage region.
A kind of computer readable storage medium is also provided in embodiments herein, the computer readable storage medium is deposited
Computer program is contained, includes program instruction in the computer program, the processor executes described program instruction, realizes this
Apply for any one data snapshot method that embodiment provides.
Wherein, the computer readable storage medium can be the storage inside of computer equipment described in previous embodiment
Unit, such as the hard disk or memory of the computer equipment.The computer readable storage medium is also possible to the computer
The plug-in type hard disk being equipped on the External memory equipment of equipment, such as the computer equipment, intelligent memory card (Smart
Media Card, SMC), secure digital (Secure Digital, SD) card, flash card (Flash Card) etc..
The above, the only specific embodiment of the application, but the protection scope of the application is not limited thereto, it is any
Those familiar with the art within the technical scope of the present application, can readily occur in various equivalent modifications or replace
It changes, these modifications or substitutions should all cover within the scope of protection of this application.Therefore, the protection scope of the application should be with right
It is required that protection scope subject to.
Claims (10)
1. a kind of data snapshot method is used for server, which is characterized in that the server and storage system communicate to connect, institute
Server is stated to connect with main-machine communication, which comprises
The snapshot request that the host is sent is received, the snapshot request includes the original mark letter of the corresponding target of target original volume
Breath, the target original volume are located in the storage system；
According to the original identification information of the target, obtain in the corresponding target original volume of the original identification information of the target to fast
According to data；
According to, to snapshot data, creating the corresponding snapped volume of the target original volume in the target original volume；
If the target original volume successfully creates corresponding snapped volume, snapshot completion notice is generated, and the snapshot is completed to lead to
Know and be sent to the host, so that the host acknowledgement snapshot is completed.
2. data snapshot method according to claim 1, which is characterized in that the method also includes:
The snapshot instruction that the storage system is sent is received, the snapshot instruction includes the original identification information to snapped volume, institute
Stating snapshot instruction is that the storage system is sent in response to the write data requests of the host；
According to the original identification information to snapped volume, creation is with described to the corresponding snapped volume of snapped volume.
3. data snapshot method according to claim 2, which is characterized in that according to the original identification information to snapped volume,
Creation is with described to the corresponding snapped volume of snapped volume, comprising:
According to the original identification information to snapped volume, obtain described to the target snapshot data in snapped volume；
According to the target snapshot data in snapped volume, creation is with described to the corresponding snapped volume of snapped volume.
4. a kind of data snapshot method is used for storage system, which is characterized in that the storage system is connect with server communication,
The storage system is connect with main-machine communication, which comprises
Receive the write data requests that the host is sent, write data request includes the original of data to be written and volume to be written
Identification information；
According to the original identification information of the volume to be written, the data to be written are written in the volume to be written；
It is requested in response to write data, sends snapshot and instruct to the server, the snapshot instruction includes to snapped volume
Original identification information, so that the server creates and described to snapped volume according to the original identification information to snapped volume
Corresponding snapped volume.
5. data snapshot method according to claim 4, which is characterized in that the original mark according to the volume to be written
Information is known, before the data to be written are written in the volume to be written, further includes:
To in the volume to be written for store data region carry out the processing of cutting label, with obtain storage region and with it is described
The corresponding area identification of storage region；
According to the storage region and corresponding area identification, bitmap table is created.
6. data snapshot method according to claim 5, which is characterized in that the original mark according to the volume to be written
Information is known, after the data to be written are written in the volume to be written, further includes:
If the type of the data to be written is file content data, determine that the data to be written are valid data；
If the type of the data to be written is filesystem information, determine that the data to be written are non-effective data；
Record whether the data to be written are valid data in the bitmap table.
7. data snapshot method according to claim 5, which is characterized in that write data request includes that target area is marked
Know；The original identification information according to the volume to be written the data to be written is written in the volume to be written, packet
It includes:
It is identified according to the target area, determines target storage domain；
If the size of data to be written is not more than the free area in the target storage domain, the data to be written are written
The target storage domain；
If the size of data to be written is greater than the free area in the target storage domain, institute is written into the data to be written
State other idle memory regions of volume to be written.
8. a kind of data snapshot device is used for server, which is characterized in that the server and storage system communicate to connect, institute
It states server to connect with main-machine communication, described device includes:
Request reception unit, the snapshot request sent for receiving the host, the snapshot request includes target original volume pair
The original identification information of the target answered, the target original volume are located in the storage system；
Data capture unit, for it is corresponding to obtain the original identification information of the target according to the original identification information of the target
In target original volume to snapshot data；
Snapshot creating unit, for according to snapshot data, it is corresponding to create the target original volume in the target original volume
Snapped volume；
It notifies transmission unit, if successfully creating corresponding snapped volume for the target original volume, generates snapshot completion notice, and
The snapshot completion notice is sent to the host, so that the host acknowledgement snapshot is completed.
9. a kind of computer equipment, which is characterized in that the computer equipment includes memory and processor；
The memory is for storing computer program；
The processor, for executing the computer program and realization such as claim 1 when executing the computer program
To data snapshot method described in any one of 7.
10. a kind of computer readable storage medium, which is characterized in that the computer-readable recording medium storage has computer journey
Sequence, the computer program make the processor realize the number as described in any one of claims 1 to 7 when being executed by processor
According to Snapshot Method.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115981574A (en) * | 2023-03-10 | 2023-04-18 | 阿里巴巴（中国）有限公司 | Snapshot storage method, system, equipment and storage medium |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1704903A (en) * | 2004-06-03 | 2005-12-07 | 华为技术有限公司 | Snapshot backup method |
| CN106776147A (en) * | 2016-12-29 | 2017-05-31 | 华为技术有限公司 | A kind of variance data backup method and variance data back-up device |
| CN107562578A (en) * | 2017-09-25 | 2018-01-09 | 郑州云海信息技术有限公司 | A kind of snapshot creation method of data storage, device, equipment and storage medium |
-
2019
- 2019-06-25 CN CN201910553410.1A patent/CN110442476A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1704903A (en) * | 2004-06-03 | 2005-12-07 | 华为技术有限公司 | Snapshot backup method |
| CN106776147A (en) * | 2016-12-29 | 2017-05-31 | 华为技术有限公司 | A kind of variance data backup method and variance data back-up device |
| WO2018120844A1 (en) * | 2016-12-29 | 2018-07-05 | 华为技术有限公司 | Differential data backup method and differential data backup device |
| CN107562578A (en) * | 2017-09-25 | 2018-01-09 | 郑州云海信息技术有限公司 | A kind of snapshot creation method of data storage, device, equipment and storage medium |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115981574A (en) * | 2023-03-10 | 2023-04-18 | 阿里巴巴（中国）有限公司 | Snapshot storage method, system, equipment and storage medium |
| CN115981574B (en) * | 2023-03-10 | 2023-08-04 | 阿里巴巴（中国）有限公司 | Snapshot storage method, system, equipment and storage medium |
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