CN109254874A - Method for transformation, device and the equipment of a kind of piece of storing data snapshot type - Google Patents
Method for transformation, device and the equipment of a kind of piece of storing data snapshot type Download PDFInfo
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- CN109254874A CN109254874A CN201810995393.2A CN201810995393A CN109254874A CN 109254874 A CN109254874 A CN 109254874A CN 201810995393 A CN201810995393 A CN 201810995393A CN 109254874 A CN109254874 A CN 109254874A
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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
- 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
- G06F3/0604—Improving or facilitating administration, e.g. storage management
-
- 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
- G06F3/0628—Interfaces specially adapted for storage systems making use of a particular technique
- G06F3/0646—Horizontal data movement in storage systems, i.e. moving data in between storage devices or systems
- G06F3/065—Replication mechanisms
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2201/00—Indexing scheme relating to error detection, to error correction, and to monitoring
- G06F2201/84—Using snapshots, i.e. a logical point-in-time copy of the data
Abstract
The invention discloses the method for transformation of a kind of piece of storing data snapshot type, it is able to respond the type conversion instruction issued in user, the block storing data snapshot of read only attribute is cloned, obtain clone volume, and the clone volume is shown into hidden attribute modification as stealth, increase hidden_image attribute in block storing data snapshot simultaneously, the access limit of block storing data snapshot is finally revised as read-write properties by read only attribute.It can be seen that, this method is according to the difference between read-only materialized view and read-write snapshot, i.e. in addition to access limit difference, it reads and writes snapshot and also adds hidden_image attribute and a stealthy clone volume compared to read-only materialized view, it is able to respond the type conversion instruction issued in user, it realizes and read-only materialized view is revised as read-write snapshot, increase the scalability of snapshot, improve the flexibility of management snapshot.In addition, being acted on corresponding with the effect of the above method the present invention also provides the reforming unit of a kind of piece of storing data snapshot type, equipment and computer readable storage medium.
Description
Technical field
The present invention relates to computer field, in particular to the method for transformation of a kind of piece storing data snapshot type, is set device
Standby and a kind of computer readable storage medium.
Background technique
Snapping technique SNIA (StorageNetworking Industry Association) is stored to snapshot
(Snapshot) definition is: about a completely available copy of specified data acquisition system, which includes corresponding data at certain
The image of a time point (time point that copy starts).Snapshot can be a copy of the data represented by it, be also possible to
One duplicate of data.The effect of snapshot is mainly able to carry out online data backup and restores.
For storing data, traditional mode is to create snapshot for it, to waited if necessary using snapshot to storage number
It is operated according to data backup, recovery etc. is carried out.Snapshot can be divided into two kinds according to read-write properties, and one is read-only materialized view, another kind is
Snapshot is read and write, that is, can not only carry out read operation but also write operation can be carried out.Under normal circumstances, the read-write properties of snapshot be
It impinges upon and is determined that when creation fastly, this results in following problems: the managerial flexibility of snapshot is poor, for example, for one
The read-only materialized view created, user will be unable to carry out write operation to it.
Summary of the invention
The object of the present invention is to provide the method for transformation of a kind of piece of storing data snapshot type, device, equipment and computers
Readable storage medium storing program for executing, the managerial flexibility to solve snapshot is poor, the read-only materialized view created for one, and user is by nothing
The problem of method carries out write operation to it.
In order to solve the above technical problems, the present invention provides the method for transformation of a kind of piece of storing data snapshot type, comprising:
In response to the type conversion instruction that user issues, the block storing data snapshot of read only attribute is cloned, is obtained
Clone volume；
It is hiding by the hidden attribute modification that shows of the clone volume；
Increase hidden_image attribute in described piece of storing data snapshot；
The access limit of described piece of storing data snapshot is revised as read-write properties by the read only attribute.
Wherein, it is cloned in the block storing data snapshot to read only attribute, before obtaining clone volume, further includes:
Locking operation is carried out to described piece of storing data snapshot, limitation user modifies described piece of storing data snapshot.
Wherein, the hidden_image attribute that increases in described piece of storing data snapshot includes:
Increase hidden_image attribute project in described piece of storing data snapshot；
Hidden_image attribute value is written in the hidden_image attribute project.
Wherein, the hidden_image attribute value includes the flag information of described piece of storing data snapshot, further includes institute
State the flag information of clone volume.
Correspondingly, the present invention also provides the reforming units of a kind of piece of storing data snapshot type, comprising:
Cloning module: the type for issuing in response to user converts instruction, to the block storing data snapshot of read only attribute
It is cloned, obtains clone volume；
Show hidden attribute modification module: for being hiding by the hidden attribute modification that shows of the clone volume；
Attribute increases module: for increasing hidden_image attribute in described piece of storing data snapshot；
Read-write properties modified module: for modifying the access limit of described piece of storing data snapshot by the read only attribute
For read-write properties.
Wherein, the reforming unit of a kind of piece of storing data snapshot type further include:
Lock module: for carrying out locking operation to described piece of storing data snapshot, limitation user modifies described piece of storage
Data snapshot.
Wherein, the attribute increases module and specifically includes:
Attribute project adding unit: for increasing hidden_image attribute project in described piece of storing data snapshot；
Attribute value writing module: for hidden_image attribute to be written in the hidden_image attribute project
Value.
Wherein, the hidden_image attribute value includes the flag information of described piece of storing data snapshot, further includes institute
State the flag information of clone volume.
In addition, the present invention also provides the converting apparatus of a kind of piece of storing data snapshot type, comprising:
Memory: for storing computer program；
Processor: for executing the computer program, to realize a kind of piece of storing data snapshot type as described above
Method for transformation the step of.
Finally, being protected on the computer readable storage medium the present invention also provides a kind of computer readable storage medium
There is computer program, a kind of piece of storing data snapshot class as described above is realized when the computer program is executed by processor
The step of method for transformation of type.
The method for transformation of a kind of piece of storing data snapshot type provided by the present invention, is able to respond the class issued in user
Type conversion instruction, clones the block storing data snapshot of read only attribute, obtains clone volume, and the clone volume is shown hidden category
Property be revised as stealth, in block storing data snapshot increase hidden_image attribute, finally by the reading of block storing data snapshot
Write permission is revised as read-write properties by read only attribute.As it can be seen that this method is according to read-only materialized view and reads and writes the difference between snapshot, i.e.,
In addition to the difference of access limit, read and write that snapshot also adds hidden_image attribute compared to read-only materialized view and one stealthy
Clone volume is able to respond the type conversion instruction issued in user, realizes read-only materialized view being revised as read-write snapshot, increase fast
According to scalability, improve management snapshot flexibility.
The present invention also provides the reforming unit of a kind of piece of storing data snapshot type, equipment and computer-readable storage mediums
Matter, effect is corresponding with the effect of the above method, and which is not described herein again.
Detailed description of the invention
It, below will be to embodiment or existing for the clearer technical solution for illustrating the embodiment of the present invention or the prior art
Attached drawing needed in technical description is briefly described, it should be apparent that, the accompanying drawings in the following description is only this hair
Bright some embodiments for those of ordinary skill in the art without creative efforts, can be with root
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the implementation process of the method for transformation embodiment one of a kind of piece of storing data snapshot type provided by the invention
Figure；
Fig. 2 is the implementation process of the method for transformation embodiment two of a kind of piece of storing data snapshot type provided by the invention
Figure；
Fig. 3 is read-only materialized view in the method for transformation embodiment two of a kind of piece of storing data snapshot type provided by the invention
Attribute schematic diagram；
After Fig. 4 is type conversion in the method for transformation embodiment two of a kind of piece of storing data snapshot type provided by the invention
Clone volume attribute schematic diagram；
Fig. 5 is that type converts in the method for transformation embodiment two of a kind of piece of storing data snapshot type provided by the invention
The attribute schematic diagram of the read-write snapshot arrived；
Fig. 6 is the structural schematic diagram of the reforming unit embodiment of a kind of piece of storing data snapshot type provided by the invention.
Specific embodiment
Core of the invention is to provide method for transformation, device, equipment and the computer of a kind of piece of storing data snapshot type
Readable storage medium storing program for executing realizes and converts read-write snapshot for read-only materialized view, increases the scalability of snapshot itself, improves pipe
Manage the flexibility of snapshot.
In order to enable those skilled in the art to better understand the solution of the present invention, with reference to the accompanying drawings and detailed description
The present invention is described in further detail.Obviously, described embodiments are only a part of the embodiments of the present invention, rather than
Whole embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Under every other embodiment obtained, shall fall within the protection scope of the present invention.
The method for transformation embodiment one of a kind of piece of storing data snapshot type provided by the invention is introduced below, is joined
See Fig. 1, embodiment one includes:
Step S101: the type conversion instruction issued in response to user carries out the block storing data snapshot of read only attribute
Clone, obtains clone volume.
The present embodiment, which is mainly used for realizing, converts read-write snapshot for read-only materialized view, and therefore, the above-mentioned type conversion instruction is special
Refer to the instruction for executing to some specified snapshot and being converted into read-write properties by read only attribute.
Snapshot is a kind of data copy technology based on time point, and in the present embodiment, snapshot refers to block storing data
One completely available copy, the copy include the image of block storing data at some time point.
The purpose of creation snapshot is to be able to record out the data information at some moment and be saved, if sent out later
When raw certain failures need data to restore, the state at time point before being restored data to by snapshot, but should
Data after time point can all lose.For example, can be carried out when storing equipment and application failure or file corruption occurring fast
The data of speed are restored, and data are restored to the state at some available time point.Another effect of snapshot is mentioned for storage user
Another data access channel is supplied, when former data carry out application on site processing, the accessible snapshot data of user may be used also
To carry out the work such as testing using snapshot.
Under normal circumstances, clone is writable volume or file system, and in the present embodiment, clone volume refers to writable
Volume, clone volume are created according to above-mentioned fast storing data.It is noted that being obtained after being cloned to fast storing data
To clone volume and block storing data between can establish implicit correlation.
Step S102: being hiding by the hidden attribute modification that shows of the clone volume.
The purpose that clone volume is revised as hiding attribute is, it is invisible to set user for the clone volume, in subsequent use
During clone volume is inquired at family, ignore the clone volume automatically.
Step S103: increase hidden_image attribute in described piece of storing data snapshot.
Hidden_image attribute be read and write impinge upon read-only materialized view fastly on the basis of an increased attribute, for showing that this is fast
According to possessing corresponding clone volume.
Step S104: the access limit of described piece of storing data snapshot is revised as read-write properties by the read only attribute.
As it can be seen that the present embodiment provides the method for transformation of a kind of piece of storing data snapshot type, it is able to respond under user
The type of hair converts instruction, clones to the block storing data snapshot of read only attribute, obtains clone volume, and by the clone volume
Hidden attribute modification is shown as stealth, increases hidden_image attribute in block storing data snapshot, it is finally that block storing data is fast
According to access limit read-write properties are revised as by read only attribute.As it can be seen that this method is according between read-only materialized view and read-write snapshot
Difference reads and writes snapshot compared to read-only materialized view and also adds hidden_image attribute and one that is, in addition to the difference of access limit
The clone volume of a stealth is able to respond the type conversion instruction issued in user, realizes read-only materialized view being revised as read-write snapshot,
The scalability for increasing snapshot improves the flexibility of management snapshot.
Start that the method for transformation embodiment two of a kind of piece of storing data snapshot type provided by the invention is discussed in detail below,
Referring to fig. 2, embodiment two specifically includes:
Step S201: the type conversion instruction issued in response to user carries out locking behaviour to described piece of storing data snapshot
Make, limitation user modifies described piece of storing data snapshot.
Since snapshot is the block storing data at a certain moment of copy, and clone volume is the snapshot of copy, in conversion type
During, in order to avoid user's modified block storing data, lead to block storing data, block storing data snapshot and clone volume
Pair the nonsynchronous problem of data between three needs the update of confinement block storing data snapshot during type converts, i.e.,
Block storing data snapshot carries out above-mentioned locking operation.
Step S202: after locking operation, the block storing data snapshot of the read only attribute created is cloned, is obtained
To clone volume.
Step S203: being hiding by the hidden attribute modification that shows of the clone volume.
As shown in figure 3, the attribute of read-only materialized view includes title, creation time etc., correspondingly, just cloning obtained clone volume
Attribute is consistent with above-mentioned read-only materialized view attribute.Step S203 purpose is, increases in the attribute of clone volume and shows hidden attribute project,
And the clone volume is known for stealth, as shown in Figure 4 showing the hidden attribute successful project bidding.
Step S204: increase hidden_image attribute project in described piece of storing data snapshot, and described
Hidden_image attribute value is written in hidden_image attribute project, wherein the hidden_image attribute value includes
The flag information of described piece of storing data snapshot further includes the flag information of the clone volume.
As described above, the attribute of read-only materialized view includes title, creation time etc. before type conversion, converted in type
In the process, it needs to increase hidden_image attribute project in the attribute of read-only materialized view, and hidden_image attribute is written
Value.Hidden_image attribute is mainly used for indicating that the snapshot has clone volume, and clone volume and snapshot are passed through identification information
It associates, as shown in figure 5, specifically, hidden_image attribute value is with<snapshot Id, clone volume Id>form write-in.
Step S205: the access limit of described piece of storing data snapshot is revised as read-write properties by the read only attribute.
To sum up, the present embodiment provides the method for transformation of a kind of piece of storing data snapshot type, according to read-only materialized view and reads
The difference between snapshot is write, i.e., in addition to the difference of access limit, reads and writes snapshot compared to read-only materialized view and also adds hidden_
Image attribute and a stealthy clone volume, are able to respond the type conversion instruction issued in user, and read-only materialized view is repaired in realization
It is changed to read-write snapshot.By aforesaid operations, can on the basis of not changing snapshot data structure, by the content that snapshot is written with
The mode of write-in clone volume is written.When carrying out snapshot data inquiry, the number being written is needed after the clone volume can be inquired simultaneously
According to realizing the purpose for converting read-only materialized view to writeable snapshot with this.It is fast to improve management for the scalability for ultimately increasing snapshot
According to flexibility.
The reforming unit of a kind of piece of storing data snapshot type provided in an embodiment of the present invention is introduced below, hereafter
The reforming unit of a kind of piece of storing data snapshot type of description and turning for above-described a kind of piece of storing data snapshot type
Change method can correspond to each other reference.
Referring to Fig. 6, which is specifically included:
Cloning module 601: the type for issuing in response to user converts instruction, fast to the block storing data of read only attribute
Capable clone is shone into, clone volume is obtained.
Show hidden attribute modification module 602: for being hiding by the hidden attribute modification that shows of the clone volume.
Attribute increases module 603: for increasing hidden_image attribute in described piece of storing data snapshot.
Read-write properties modified module 604: for by the access limit of described piece of storing data snapshot by the read only attribute
It is revised as read-write properties.
Wherein, the device further include:
Lock module 600: for carrying out locking operation to described piece of storing data snapshot, limitation user modifies described piece and deposits
Store up data snapshot.
Wherein, the attribute increases module 603 and specifically includes:
Attribute project adding unit 6031: for increasing hidden_image attribute item in described piece of storing data snapshot
Mesh.
Attribute value writing module 6032: belong to for hidden_image to be written in the hidden_image attribute project
Property value.
Specifically, the hidden_image attribute value includes the flag information of described piece of storing data snapshot, further include
The flag information of the clone volume.
The reforming unit of a kind of piece of storing data snapshot type of the present embodiment is for realizing a kind of piece of storage number above-mentioned
The visible block storing data snapshot one of above of specific embodiment according to the method for transformation of snapshot type, therefore in the device
The embodiment part of the method for transformation of type, for example, cloning module 601, show hidden attribute modification module 602, attribute increase module
603, read-write properties modified module 604 is respectively used to walk in the method for transformation for realizing above-mentioned a kind of piece of storing data snapshot type
Rapid S101, S102, S103, S104.So specific embodiment is referred to the description of corresponding various pieces embodiment,
Not reinflated introduction herein.
In addition, due to the present embodiment a kind of piece of storing data snapshot type reforming unit for realizing one kind above-mentioned
The method for transformation of block storing data snapshot type, therefore its effect is corresponding with the effect of the above method, which is not described herein again.
In addition, the present invention also provides the converting apparatus of a kind of piece of storing data snapshot type, comprising:
Memory: for storing computer program；
Processor: for executing the computer program, to realize a kind of piece of storing data snapshot type as described above
Method for transformation the step of.
Finally, being protected on the computer readable storage medium the present invention also provides a kind of computer readable storage medium
There is computer program, a kind of piece of storing data snapshot class as described above is realized when the computer program is executed by processor
The step of method for transformation of type.
The converting apparatus and computer readable storage medium of a kind of piece of storing data snapshot type provided by the present invention,
It is used to realize the method for transformation of a kind of piece of storing data snapshot type above-mentioned, therefore its specific embodiment is visible hereinbefore
A kind of piece of storing data snapshot type method for transformation embodiment part, not reinflated introduction here.
It should be further understood that due to the converting apparatus and computer readable storage medium of the block storing data snapshot type,
For realizing the method for transformation of a kind of piece of storing data snapshot type above-mentioned, therefore its effect is opposite with the effect of the above method
It answers, also repeats no more here.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with it is other
The difference of embodiment, same or similar part may refer to each other between each embodiment.For being filled disclosed in embodiment
For setting, since it is corresponded to the methods disclosed in the examples, so being described relatively simple, related place is referring to method part
Explanation.
Professional further appreciates that, unit described in conjunction with the examples disclosed in the embodiments of the present disclosure
And algorithm steps, can be realized with electronic hardware, computer software, or a combination of the two, in order to clearly demonstrate hardware and
The interchangeability of software generally describes each exemplary composition and step according to function in the above description.These
Function is implemented in hardware or software actually, the specific application and design constraint depending on technical solution.Profession
Technical staff can use different methods to achieve the described function each specific application, but this realization is not answered
Think beyond the scope of this invention.
The step of method described in conjunction with the examples disclosed in this document or algorithm, can directly be held with hardware, processor
The combination of capable software module or the two is implemented.Software module can be placed in random access memory (RAM), memory, read-only deposit
Reservoir (ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or technology
In any other form of storage medium well known in field.
Above to method for transformation, device, equipment and the meter of a kind of piece of storing data snapshot type provided by the present invention
Calculation machine readable storage medium storing program for executing is described in detail.Specific case used herein to the principle of the present invention and embodiment into
Elaboration is gone, the above description of the embodiment is only used to help understand the method for the present invention and its core ideas.It should be pointed out that pair
For those skilled in the art, without departing from the principle of the present invention, the present invention can also be carried out
Some improvements and modifications, these improvements and modifications also fall within the scope of protection of the claims of the present invention.
Claims (10)
1. the method for transformation of a kind of piece of storing data snapshot type characterized by comprising
In response to the type conversion instruction that user issues, the block storing data snapshot of read only attribute is cloned, is cloned
Volume；
It is hiding by the hidden attribute modification that shows of the clone volume；
Increase hidden_image attribute in described piece of storing data snapshot；
The access limit of described piece of storing data snapshot is revised as read-write properties by the read only attribute.
2. the method as described in claim 1, which is characterized in that in the block storing data snapshot progress gram to read only attribute
It is grand, before obtaining clone volume, further includes:
Locking operation is carried out to described piece of storing data snapshot, limitation user modifies described piece of storing data snapshot.
3. the method as described in claim 1, which is characterized in that described to increase hidden_ in described piece of storing data snapshot
Image attribute includes:
Increase hidden_image attribute project in described piece of storing data snapshot；
Hidden_image attribute value is written in the hidden_image attribute project.
4. method as claimed in claim 3, which is characterized in that the hidden_image attribute value includes described piece of storage number
It further include the flag information of the clone volume according to the flag information of snapshot.
5. the reforming unit of a kind of piece of storing data snapshot type characterized by comprising
Cloning module: the type for issuing in response to user converts instruction, carries out to the block storing data snapshot of read only attribute
Clone, obtains clone volume；
Show hidden attribute modification module: for being hiding by the hidden attribute modification that shows of the clone volume；
Attribute increases module: for increasing hidden_image attribute in described piece of storing data snapshot；
Read-write properties modified module: for the access limit of described piece of storing data snapshot to be revised as reading by the read only attribute
Write attribute.
6. device as claimed in claim 5, which is characterized in that further include:
Lock module: for carrying out locking operation to described piece of storing data snapshot, limitation user modifies described piece of storing data
Snapshot.
7. device as claimed in claim 5, which is characterized in that the attribute increases module and specifically includes:
Attribute project adding unit: for increasing hidden_image attribute project in described piece of storing data snapshot；
Attribute value writing module: for hidden_image attribute value to be written in the hidden_image attribute project.
8. device as claimed in claim 7, which is characterized in that the hidden_image attribute value includes described piece of storage number
It further include the flag information of the clone volume according to the flag information of snapshot.
9. the converting apparatus of a kind of piece of storing data snapshot type characterized by comprising
Memory: for storing computer program；
Processor: for executing the computer program, to realize a kind of piece of storage as described in claim 1-4 any one
The step of method for transformation of data snapshot type.
10. a kind of computer readable storage medium, which is characterized in that preserve computer on the computer readable storage medium
Program realizes a kind of piece of storage number as described in claim 1-4 any one when the computer program is executed by processor
According to snapshot type method for transformation the step of.
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| CN110032474A (en) * | 2019-04-12 | 2019-07-19 | 苏州浪潮智能科技有限公司 | A kind of snapshot, which occupies, holds method for determination of amount, system and associated component |
| CN113076220A (en) * | 2020-01-06 | 2021-07-06 | 阿里巴巴集团控股有限公司 | Data processing method and device, electronic equipment and computer readable medium |
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