CN108763517A - A kind of method and relevant device for deleting metadata - Google Patents
A kind of method and relevant device for deleting metadata Download PDFInfo
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- CN108763517A CN108763517A CN201810543669.3A CN201810543669A CN108763517A CN 108763517 A CN108763517 A CN 108763517A CN 201810543669 A CN201810543669 A CN 201810543669A CN 108763517 A CN108763517 A CN 108763517A
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Abstract
The embodiment of the present application discloses a kind of method and relevant device for deleting metadata, and rate is deleted to improve disk utilization for reducing the leakage of metadata.The embodiment of the present application method includes：Receiving roll delete operation is asked, and the volume delete operation request deletes logical volume for asking；It is asked in response to the volume delete operation, determines all metadata corresponding with the logical volume；It deletes each metadata, and according to the correspondence of metadata and reversed metadata, deletes reversed metadata corresponding with each metadata.
Description
Technical field
This application involves software field of storage more particularly to a kind of methods and relevant device for deleting metadata.
Background technology
Metadata, also known as broker data, relaying data etc., are the information of the tissue about data, data field and its relationship,
I.e. metadata is exactly the data about data.It refers to that the logical volume for fictionalizing storage device carries out delete operation that volume, which is deleted,
Metadata deletion refers to while rolling up deletion, will be that corresponding metadata information and reversed metadata information be deleted.
Volume deletes function can carry out space release in the case where host no longer needs this disk, effective to reach disk storage space
The effect utilized.Metadata deletion is to delete to generate along with volume.Because when data store, along with depositing for data
Storage will produce the data i.e. metadata information of data, and metadata information can search number with the whole life cycle of data, user
According to when be all that retrieval logical data is gone by metadata, but metadata itself is opaque for user.
However, if being only to delete data information during rolling up and deleting, metadata information will enter
Disordered state, cannot carry out retrieval deletion again, and space is also unable to get release.
In the prior art, metadata and reversed metadata are subjected to batch deletion respectively, are susceptible to the case where leakage is deleted, and
Delete the less efficient of metadata and reversed metadata.
Invention content
The embodiment of the present application provides a kind of method and relevant device for deleting metadata, for reducing the leakage of metadata
Rate is deleted to improve disk utilization.
The first aspect of the embodiment of the present application provides a kind of method for deleting metadata, including：Receiving roll delete operation
Request, the volume delete operation request delete logical volume for asking；In response to the volume delete operation ask, determine with it is described
The corresponding all metadata of logical volume；Each metadata is deleted, and according to the correspondence of metadata and reversed metadata, is deleted
Except reversed metadata corresponding with each metadata.
In a kind of possible design, in the first realization method of the embodiment of the present application first aspect, the basis
The correspondence of metadata and reversed metadata deletes reversed metadata corresponding with each metadata, including：According to described
The correspondence of metadata and reversed metadata determines reversed metadata corresponding with each metadata；Delete the reversed member
Data.
In a kind of possible design, in second of realization method of the embodiment of the present application first aspect, the reception
After rolling up delete operation request, before deletion each metadata, the method further includes：Determine current time not into
Row read operation or write operation.
In a kind of possible design, in the third realization method of the embodiment of the present application first aspect, the reception
After rolling up delete operation request, the method further includes：Delete storage information corresponding with the logical volume.
The second aspect of the embodiment of the present application provides a kind of metadata sweep equipment, including：Transmit-Receive Unit, for receiving
Delete operation request is rolled up, the volume delete operation request deletes logical volume for asking；Determination unit, in response to the volume
Delete operation is asked, and determines all metadata corresponding with the logical volume；Deleting unit, for deleting each metadata,
And according to the correspondence of metadata and reversed metadata, reversed metadata corresponding with each metadata is deleted.
In a kind of possible design, in the first realization method of the embodiment of the present application second aspect, the deletion
Unit includes：Determining module, for being determined and each metadata according to the correspondence of the metadata and reversed metadata
Corresponding reversed metadata；Removing module, for deleting the reversed metadata.
In a kind of possible design, in second of realization method of the embodiment of the present application second aspect, the determination
Unit is additionally operable to：Determine that current time does not carry out read operation or write operation.
In a kind of possible design, in the third realization method of the embodiment of the present application second aspect, the deletion
Unit is additionally operable to：Delete storage information corresponding with the logical volume.
The application third aspect provides a kind of electronic equipment, including memory, processor, which is characterized in that the place
Reason device realizes the deletion member number as described in above-mentioned any one when being used to execute the computer management class method stored in memory
According to method the step of.
The application fourth aspect provides a kind of computer readable storage medium, is stored thereon with computer management class
Sequence, it is characterised in that：The deletion as described in above-mentioned any one is realized when the computer management class method is executed by processor
The step of method of metadata.
As can be seen from the above technical solutions, the embodiment of the present application has the following advantages：It is deleted by active and passive tactile
The mode of hair carries out the deletion of metadata and reversed metadata, i.e., also actively deletes metadata when carrying out volume and deleting,
In the deletion for can passively be triggered when metadata deletion reversed metadata, realizing can be effective when rolling up and deleting
The deletion of metadata is controlled, utmostly release disk space, effectively raises disk utilization.
Description of the drawings
Fig. 1 is a kind of flow diagram of possible method for deleting metadata provided by the embodiments of the present application；
Fig. 2 is a kind of embodiment schematic diagram of possible metadata sweep equipment provided by the embodiments of the present application；
Fig. 3 is a kind of hardware architecture diagram of possible metadata sweep equipment provided by the embodiments of the present application；
Fig. 4 is a kind of embodiment schematic diagram of possible electronic equipment provided by the embodiments of the present application；
Fig. 5 is a kind of embodiment schematic diagram of possible computer readable storage medium provided by the embodiments of the present application.
Specific implementation mode
The embodiment of the present application provides a kind of method and relevant device for deleting metadata, is deleted for reducing the leakage of metadata
Rate is to improve disk utilization.
Term " first ", " second ", " third " in the description and claims of this application and above-mentioned attached drawing, "
The (if present)s such as four " are for distinguishing similar object, without being used to describe specific sequence or precedence.It should manage
The data that solution uses in this way can be interchanged in the appropriate case, so that the embodiments described herein can be in addition to illustrating herein
Or the sequence other than the content of description is implemented.In addition, term " comprising " and " having " and their any deformation, it is intended that
Cover it is non-exclusive include, for example, containing the process of series of steps or unit, method, system, product or equipment need not limit
In those of clearly listing step or unit, but may include not listing clearly or for these processes, method, production
The intrinsic other steps of product or equipment or unit.Below in conjunction with the attached drawing in the embodiment of the present application, in the embodiment of the present application
Technical solution be clearly and completely described, it is clear that described embodiments are only a part of embodiments of the present application, and
The embodiment being not all of.
Referring to Fig. 1, for a kind of embodiment signal of the possible method for deleting metadata provided by the embodiments of the present application
Figure, including：
101, receiving roll delete operation is asked；
When needing the logical volume that will fictionalize to come in storage device to carry out delete operation, the volume deletion that user sends is received
Operation requests, volume delete operation request delete logical volume for asking.
102, determine that current time does not carry out read operation or write operation；
After receiving volume delete operation request, judges whether current time has and carrying out read operation or write operation.If really
Determining current time does not carry out read operation or write operation, then deletes logical volume and the corresponding metadata of the logical volume and reversed
The relevant informations such as metadata；If current time, which has, is carrying out read operation or write operation, other operations are executed, such as behaviour of continuing
After the completion of work or write operation, then logical volume is deleted, alternatively, returning to prompt message to user, which, which is used to indicate, works as
Before cannot delete the logical volume etc., to avoid unnecessary loss.
Therefore storage device continues to execute step 103 after determining that current time does not carry out read operation or write operation.
103, all metadata corresponding with logical volume are determined；
If current time does not carry out read operation or write operation, it is determined that all metadata corresponding with the logical volume,
The metadata can be understood as the corresponding logical address of logical volume to physical address mapping relations (logical physical,
LP), i.e., the physical address that corresponding data stores in storage system, i.e. L → P can be inquired by the logical address of user terminal.
In the embodiment of the present application, the letter of all metadata can be obtained by way of existing range query (scope search)
Breath, specific details are not described herein again.After use scope inquiry mode is inquired, the query result of return includes as all members
The set of the information of data, the set can be understood as carrying out the set of all mapping relations of metadata deletion.
Optionally, in the embodiment of the present application, all metadata can also be obtained by other means, are not done herein specifically
It limits.
104, logical volume and all metadata are deleted；
After determining all metadata corresponding with logical volume, deletes the logical volume and delete deposit corresponding with the logical volume
While storing up information, the corresponding all metadata of the determining logical volume are also deleted, specifically, including all members by what is retrieved
The set of the information of data carries out batch deletion.
105, reversed metadata corresponding with each metadata is determined according to the correspondence of metadata and reversed metadata；
After determining all metadata corresponding with logical volume, determined according to the correspondence of metadata and reversed metadata
Reversed metadata corresponding with each metadata.So-called reversed metadata, it can be understood as the corresponding physical address of logical volume is to patrolling
The mapping relations (physical logical, PL) for collecting address, i.e., by the physical address of storage system, can be reversed and retrieve
The logical address of corresponding user terminal.
Wherein, the correspondence of the metadata and reversed metadata is used for when deleting each metadata, finds out this yuan of number
According to corresponding reversed metadata, to trigger the delete operation of the reversed metadata.
106, reversed metadata is deleted.
It is determining metadata and is being determined according to the correspondence of metadata and reversed metadata corresponding with each metadata anti-
To after metadata, when the set for the information including all metadata that will be retrieved carries out batch deletion, each metadata
Deletion complete operation, can all trigger the delete operation of corresponding reversed metadata.When all deletions are completed, that is, deletes and patrol
After collecting volume, metadata and reversed metadata, then returns to delete to storage system and complete result.
In the embodiment of the present application, metadata and reversed metadata are deleted and carried out by way of passively triggering active
It deletes, i.e., also actively deletes metadata when carrying out volume and deleting, can passively be triggered when carrying out metadata deletion
The deletion of reversed metadata is realized and is rolling up the deletion that can effectively control metadata when deletion, utmostly release disk
Space effectively raises disk utilization.
The method that metadata is deleted in the embodiment of the present application is described above, below in the embodiment of the present application
Metadata sweep equipment is described, referring to Fig. 2, in the embodiment of the present application metadata sweep equipment one embodiment, packet
It includes：
Transmit-Receive Unit 201 is asked for receiving roll delete operation, and the volume delete operation request deletes logic for asking
Volume；
Determination unit 202 determines all members corresponding with the logical volume for being asked in response to the volume delete operation
Data；
Deleting unit 203, for deleting each metadata, and according to the correspondence of metadata and reversed metadata,
Delete reversed metadata corresponding with each metadata.
In one possible implementation, the deleting unit 203 includes：
Determining module 2031, for being determined and each first number according to the correspondence of the metadata and reversed metadata
According to corresponding reversed metadata；
Removing module 2032, for deleting the reversed metadata.
In one possible implementation, the determination unit 202 is additionally operable to：
Determine that current time does not carry out read operation or write operation.
In one possible implementation, the deleting unit 203 is additionally operable to：
Delete storage information corresponding with the logical volume.
In conclusion in the embodiment of the present application, metadata and anti-is carried out in such a way that active is deleted and passively triggered
Deletion to metadata also actively deletes metadata when carrying out volume and deleting, can when carrying out metadata deletion
Passively to trigger the deletion of reversed metadata, realizes and rolling up the deletion that can effectively control metadata when deletion, maximum journey
Release disk space is spent, disk utilization is effectively raised.
Above figure 2 retouches the metadata sweep equipment in the embodiment of the present invention from the angle of modular functionality entity
It states, the metadata sweep equipment in the embodiment of the present invention is described in detail from the angle of hardware handles below, please refers to figure
3,300 one embodiment of metadata sweep equipment in the embodiment of the present invention, including：
(the wherein quantity of processor 303 can be with for input unit 301, output device 302, processor 303 and memory 304
One or more, in Fig. 3 by taking a processor 303 as an example).In some embodiments of the invention, input unit 301, output
Device 302, processor 303 and memory 304 can be connected by bus or other means, wherein to be connected by bus in Fig. 3
For.
Wherein, pass through the operational order for calling memory 304 to store, processor 303, for executing following steps：
Receiving roll delete operation is asked, and the volume delete operation request deletes logical volume for asking；In response to the volume
Delete operation is asked, and determines all metadata corresponding with the logical volume；Delete each metadata, and according to metadata with
The correspondence of reversed metadata deletes reversed metadata corresponding with each metadata.
Optionally, by the operational order for calling memory 304 to store, processor 303 is additionally operable to execute following steps：
Reversed member number corresponding with each metadata is determined according to the correspondence of the metadata and reversed metadata
According to；Delete the reversed metadata.
Optionally, by the operational order for calling memory 304 to store, processor 303 is additionally operable to execute following steps：
Determine that current time does not carry out read operation or write operation.
Optionally, by the operational order for calling memory 304 to store, processor 303 is additionally operable to execute following steps：
Delete storage information corresponding with the logical volume.
Referring to Fig. 4, Fig. 4 is the embodiment schematic diagram of electronic equipment provided in an embodiment of the present invention.
As shown in figure 4, an embodiment of the present invention provides a kind of electronic equipment 400, including memory 410, processor 420 and
It is stored in the computer program 411 that can be run on memory 410 and on processor 420, processor 420 executes computer program
Following steps are realized when 411：
Receiving roll delete operation is asked, and the volume delete operation request deletes logical volume for asking；In response to the volume
Delete operation is asked, and determines all metadata corresponding with the logical volume；Delete each metadata, and according to metadata with
The correspondence of reversed metadata deletes reversed metadata corresponding with each metadata.
In specific implementation process, when processor 420 executes computer program 411, the corresponding embodiments of Fig. 1 may be implemented
Middle any embodiment.
Since the electronic equipment that the present embodiment is introduced is a kind of metadata sweep equipment institute in the implementation embodiment of the present invention
The equipment of use, so based on the method described in the embodiment of the present invention, those skilled in the art can understand this reality
The specific implementation mode and its various change form for applying the electronic equipment of example, so how to be realized for the electronic equipment herein
Method in the embodiment of the present invention is no longer discussed in detail, as long as those skilled in the art implement the side in the embodiment of the present invention
Equipment used by method belongs to the range of the invention to be protected.
Referring to Fig. 5, Fig. 5 is a kind of embodiment signal of computer readable storage medium provided in an embodiment of the present invention
Figure.
As shown in figure 5, present embodiments providing a kind of computer readable storage medium 500, it is stored thereon with computer journey
Sequence 511, the computer program 511 realize following steps when being executed by processor：
Receiving roll delete operation is asked, and the volume delete operation request deletes logical volume for asking；In response to the volume
Delete operation is asked, and determines all metadata corresponding with the logical volume；Delete each metadata, and according to metadata with
The correspondence of reversed metadata deletes reversed metadata corresponding with each metadata.
In specific implementation process, which may be implemented Fig. 1 corresponding embodiments when being executed by processor
Middle any embodiment.
It should be noted that in the above-described embodiments, all emphasizing particularly on different fields to the description of each embodiment, in some embodiment
The part being not described in may refer to the associated description of other embodiments.
It should be understood by those skilled in the art that, the embodiment of the present invention can be provided as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the present invention
Apply the form of example.Moreover, the present invention can be used in one or more wherein include computer usable program code computer
The computer program production implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.)
The form of product.
The present invention be with reference to according to the method for the embodiment of the present invention, the flow of equipment (system) and computer program product
Figure and/or block diagram describe.It should be understood that each flow in flowchart and/or the block diagram can be realized by computer program instructions
And/or the combination of the flow and/or box in box and flowchart and/or the block diagram.These computer programs can be provided to refer to
Enable the processor of all-purpose computer, special purpose computer, embedded computer or other programmable data processing devices to produce
A raw machine so that the instruction executed by computer or the processor of other programmable data processing devices is generated for real
The device for the function of being specified in present one flow of flow chart or one box of multiple flows and/or block diagram or multiple boxes.
These computer program instructions, which may also be stored in, can guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works so that instruction generation stored in the computer readable memory includes referring to
Enable the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one box of block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device so that count
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, in computer or
The instruction executed on other programmable devices is provided for realizing in one flow of flow chart or multiple flows and/or block diagram one
The step of function of being specified in a box or multiple boxes.
The embodiment of the present invention additionally provides a kind of computer program product, which includes computer software
Instruction, when computer software instructions are run on a processing device so that processing equipment is executed such as the wind in Fig. 1 corresponding embodiments
Flow in the method for electric field digital Platform design.
The computer program product includes one or more computer instructions.Load and execute on computers the meter
When calculation machine program instruction, entirely or partly generate according to the flow or function described in the embodiment of the present invention.The computer can
To be all-purpose computer, special purpose computer, computer network or other programmable devices.The computer instruction can be deposited
Storage in a computer-readable storage medium, or from a computer readable storage medium to another computer readable storage medium
Transmission, for example, the computer instruction can pass through wired (example from a web-site, computer, server or data center
Such as coaxial cable, optical fiber, Digital Subscriber Line (digital subscriber line, DSL)) or wireless (such as infrared, wireless,
Microwave etc.) mode is transmitted to another web-site, computer, server or data center.It is described computer-readable to deposit
Storage media can be the clothes that any usable medium that computer can store either is integrated comprising one or more usable mediums
The data storage devices such as business device, data center.The usable medium can be magnetic medium (for example, floppy disk, hard disk, tape),
Optical medium (for example, DVD) or semiconductor medium (such as solid state disk (solid state disk, SSD)) etc..
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description,
The specific work process of device and unit, can refer to corresponding processes in the foregoing method embodiment, and details are not described herein.
In several embodiments provided by the present invention, it should be understood that disclosed system, device and method can be with
It realizes by another way.For example, the apparatus embodiments described above are merely exemplary, for example, the unit
It divides, only a kind of division of logic function, formula that in actual implementation, there may be another division manner, such as multiple units or component
It can be combined or can be integrated into another system, or some features can be ignored or not executed.Another point, it is shown or
The mutual coupling, direct-coupling or communication connection discussed can be the indirect coupling by some interfaces, device or unit
It closes or communicates to connect, can be electrical, machinery or other forms.
The unit illustrated as separating component may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, you can be located at a place, or may be distributed over multiple
In network element.Some or all of unit therein can be selected according to the actual needs to realize the mesh of this embodiment scheme
's.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, it can also
It is that each unit physically exists alone, it can also be during two or more units be integrated in one unit.Above-mentioned integrated list
The form that hardware had both may be used in member is realized, can also be realized in the form of SFU software functional unit.
If the integrated unit is realized in the form of SFU software functional unit and sells or use as independent product
When, it can be stored in a computer read/write memory medium.Based on this understanding, technical scheme of the present invention is substantially
The all or part of the part that contributes to existing technology or the technical solution can be in the form of software products in other words
It embodies, which is stored in a storage medium, including some instructions are used so that a computer
Equipment (can be personal computer, server or the network equipment etc.) executes the complete of each embodiment the method for the present invention
Portion or part steps.And storage medium above-mentioned includes：USB flash disk, mobile hard disk, read-only memory (Read-Only Memory,
ROM), random access memory (Random Access Memory, RAM), magnetic disc or CD etc. are various can store program
The medium of code.
The above, the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to before
Stating embodiment, invention is explained in detail, it will be understood by those of ordinary skill in the art that：It still can be to preceding
The technical solution recorded in each embodiment is stated to carry out repairing this or equivalent replacement of some of the technical features；And these
It repaiies this or replaces, the spirit and scope for various embodiments of the present invention technical solution that it does not separate the essence of the corresponding technical solution.
Claims (10)
1. a kind of method for deleting metadata, which is characterized in that including：
Receiving roll delete operation is asked, and the volume delete operation request deletes logical volume for asking；
It is asked in response to the volume delete operation, determines all metadata corresponding with the logical volume；
Each metadata is deleted, and according to the correspondence of metadata and reversed metadata, is deleted and each metadata pair
The reversed metadata answered.
2. according to the method described in claim 1, it is characterized in that, described close according to metadata is corresponding with reversed metadata
Reversed metadata corresponding with each metadata is deleted by system, including：
Reversed metadata corresponding with each metadata is determined according to the correspondence of the metadata and reversed metadata；
Delete the reversed metadata.
3. method according to claim 1 or 2, which is characterized in that described to delete after the receiving roll delete operation request
Before each metadata, the method further includes：
Determine that current time does not carry out read operation or write operation.
4. according to the method described in claim 1, it is characterized in that, the receiving roll delete operation request after, the method
Further include：
Delete storage information corresponding with the logical volume.
5. a kind of metadata sweep equipment, which is characterized in that including：
Transmit-Receive Unit is asked for receiving roll delete operation, and the volume delete operation request deletes logical volume for asking；
Determination unit determines all metadata corresponding with the logical volume for being asked in response to the volume delete operation；
Deleting unit, for deleting each metadata, and according to the correspondence of metadata and reversed metadata, deletion and institute
State the corresponding reversed metadata of each metadata.
6. equipment according to claim 5, which is characterized in that the deleting unit includes：
Determining module, it is corresponding with each metadata for being determined according to the correspondence of the metadata and reversed metadata
Reversed metadata；
Removing module, for deleting the reversed metadata.
7. equipment according to claim 5 or 6, which is characterized in that the determination unit is additionally operable to：
Determine that current time does not carry out read operation or write operation.
8. equipment according to claim 5, which is characterized in that the deleting unit is additionally operable to：
Delete storage information corresponding with the logical volume.
9. a kind of electronic equipment, including memory, processor, which is characterized in that the processor is deposited for executing in memory
The step of the method for the deletion metadata as described in any one of Claims 1-4 is realized when the computer management class method of storage
Suddenly.
10. a kind of computer readable storage medium is stored thereon with computer management class method, it is characterised in that：The calculating
Machine management class method realizes the deletion metadata as described in any one of Claims 1-4 method when being executed by processor
The step of.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810543669.3A CN108763517A (en) | 2018-05-30 | 2018-05-30 | A kind of method and relevant device for deleting metadata |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810543669.3A CN108763517A (en) | 2018-05-30 | 2018-05-30 | A kind of method and relevant device for deleting metadata |
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| CN110515553A (en) * | 2019-08-22 | 2019-11-29 | 苏州浪潮智能科技有限公司 | A kind of volume delet method and equipment |
| CN110515556A (en) * | 2019-08-23 | 2019-11-29 | 苏州浪潮智能科技有限公司 | Book uses capacity determining methods, device, equipment and readable storage medium storing program for executing |
| CN110968446A (en) * | 2019-11-24 | 2020-04-07 | 苏州浪潮智能科技有限公司 | Metadata repairing method, device and system and computer readable storage medium |
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Application publication date: 20181106 |