CN108959126A - A kind of method, apparatus that establishing data frame bitmap and computer readable storage medium - Google Patents
A kind of method, apparatus that establishing data frame bitmap and computer readable storage medium Download PDFInfo
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- CN108959126A CN108959126A CN201810660143.3A CN201810660143A CN108959126A CN 108959126 A CN108959126 A CN 108959126A CN 201810660143 A CN201810660143 A CN 201810660143A CN 108959126 A CN108959126 A CN 108959126A
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- 238000000034 method Methods 0.000 title claims abstract description 35
- 238000009432 framing Methods 0.000 claims abstract description 57
- 238000004590 computer program Methods 0.000 claims description 11
- 238000012986 modification Methods 0.000 claims description 10
- 230000004048 modification Effects 0.000 claims description 10
- 108010001267 Protein Subunits Proteins 0.000 claims description 3
- 238000012217 deletion Methods 0.000 claims description 2
- 230000037430 deletion Effects 0.000 claims description 2
- 238000012545 processing Methods 0.000 abstract description 8
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 239000007787 solid Substances 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F12/00—Accessing, addressing or allocating within memory systems or architectures
- G06F12/02—Addressing or allocation; Relocation
- G06F12/08—Addressing or allocation; Relocation in hierarchically structured memory systems, e.g. virtual memory systems
- G06F12/10—Address translation
Abstract
The embodiment of the invention discloses a kind of method, apparatus for establishing data frame bitmap and computer readable storage medium, the corresponding relationship of query logic address and physical address obtains physical address corresponding to the logical address of each pending data frame；According to the physical address of target data frame, primary data framing bit figure corresponding to target data frame is determined, and the corresponding effective identifier of addition on position corresponding with the physical address in the primary data framing bit figure, to obtain target data framing bit figure；Wherein target data frame is any one data frame in all pending data frames, and the process flow of reference object data frame can complete the processing to all pending data frames, to realize the reconstruction of data frame bitmap.Using the technical solution data frame bitmap can be rebuild in time, improves the reliability and data stability of data frame bitmap in the case where data frame bitmap is lost.
Description
Technical field
The present invention relates to technical field of data storage, more particularly to a kind of method, apparatus for establishing data frame bitmap and
Computer readable storage medium.
Background technique
In a single computer system, the region of storing data has multiple, and each region includes multiple modules, is directed to
Each module can establish a data framing bit figure.Whether data frame bitmap has for data of the record storage in corresponding module
Effect.By taking a data frame as an example, when the data frame is valid data, it has been set in the corresponding position of data frame bitmap
Effect；Similarly, it when the data frame is invalid data, is set in vain in the corresponding position of data frame bitmap.Data frame bitmap
Moving etc. for recycling and valid data for invalid data is of great significance.
Data frame bitmap can store on solid state hard disk (Solid State Drives, SSD).The electric process at SSD
In, SSD needs for data frame bitmap to be saved in read-only memory (flash), continues to use after powering on next time for SSD.But
At SSD in electric process, SSD does not ensure that data frame bitmap can be promptly and accurately saved in flash, to cause to count
According to the loss of framing bit figure.And in the prior art, there is no the schemes for rebuilding data frame bitmap.
As it can be seen that rebuilding data frame bitmap how after data frame bitmap loss, being that those skilled in the art are urgently to be resolved
Problem.
Summary of the invention
The purpose of the embodiment of the present invention is that providing a kind of method, apparatus for establishing data frame bitmap and computer-readable storage
Medium can rebuild data frame bitmap after data frame bitmap loss.
In order to solve the above technical problems, the embodiment of the present invention provides a kind of method for establishing data frame bitmap, comprising:
The corresponding relationship of query logic address and physical address, corresponding to the logical address for obtaining each pending data frame
Physical address；
According to the physical address of target data frame, primary data framing bit figure corresponding to the target data frame is determined,
And the corresponding effective identifier of addition on position corresponding with the physical address in the primary data framing bit figure, with
To target data framing bit figure；Wherein the target data frame is any one data frame in all pending data frames.
Optionally, the corresponding relationship of the query logic address and physical address obtains the logic of each pending data frame
Physical address corresponding to address includes:
With the presence or absence of the logical address phase with target data frame in the corresponding relationship of decision logic address and physical address
The destination logical address matched；
If so, physically using the corresponding physical address of the destination logical address as the target data frame
Location.
Optionally, after obtaining the target data framing bit figure further include:
When the physical address of the target data frame changes, then by corresponding position in the target data framing bit figure
On effective identifier be revised as invalidated identification symbol；
According to the physical address after variation, the current corresponding data frame bitmap of the target data frame is determined, and
Corresponding effective identifier is added in the data frame bitmap on position corresponding with the physical address.
Optionally, after obtaining the target data framing bit figure further include:
After deleting the target data frame, then by effective identifier in the target data framing bit figure on corresponding position
It is revised as invalidated identification symbol.
The embodiment of the invention also provides a kind of devices for establishing data frame bitmap, including acquiring unit and determination unit；
The acquiring unit obtains each pending data frame for the corresponding relationship of query logic address and physical address
Logical address corresponding to physical address；
The determination unit is determined corresponding to the target data frame for the physical address according to target data frame
Primary data framing bit figure, and addition is corresponding on position corresponding to the physical address in the primary data framing bit figure
Effective identifier, to obtain target data framing bit figure；Wherein the target data frame is in all pending data frames
Any one data frame.
Optionally, the query unit includes judgment sub-unit and as subelement；
The judgment sub-unit, for whether there is in the corresponding relationship of decision logic address and physical address and number of targets
The destination logical address to match according to the logical address of frame；If so, triggering is described to be used as subelement；
It is described to be used as subelement, for using the corresponding physical address of the destination logical address as the target data
The physical address of frame.
It optionally, further include modification unit and adding unit；
The modification unit, for when the physical address of the target data frame changes, then by the number of targets
Invalidated identification symbol is revised as according to effective identifier on corresponding position in framing bit figure；
The adding unit, for the object when the physical address of the target data frame changes, after foundation variation
Manage address, determine the current corresponding data frame bitmap of the target data frame, and in the data frame bitmap with it is described
Corresponding effective identifier is added on the corresponding position of physical address.
Optionally, the modification unit is also used to after deleting the target data frame, then by the target data framing bit
Effective identifier in figure on corresponding position is revised as invalidated identification symbol.
The embodiment of the invention also provides a kind of devices for establishing data frame bitmap, comprising:
Memory, for storing computer program；
Processor, for executing the computer program to realize such as the step of the above-mentioned method for establishing data frame bitmap.
The embodiment of the invention also provides a kind of computer readable storage medium, deposited on the computer readable storage medium
Computer program is contained, the step such as the above-mentioned method for establishing data frame bitmap is realized when the computer program is executed by processor
Suddenly.
The corresponding relationship of query logic address and physical address it can be seen from above-mentioned technical proposal obtains each to be processed
Physical address corresponding to the logical address of data frame；According to the physical address of target data frame, target data frame institute is determined
Corresponding primary data framing bit figure, and phase is added on position corresponding with the physical address in the primary data framing bit figure
The effective identifier answered, to obtain target data framing bit figure；Wherein target data frame is any in all pending data frames
One data frame, the process flow of reference object data frame can complete the processing to all pending data frames, to realize
The reconstruction of data frame bitmap.Using the technical solution data framing bit can be rebuild in time in the case where data frame bitmap is lost
Figure, improves the reliability and data stability of data frame bitmap.
Detailed description of the invention
In order to illustrate the embodiments of the present invention more clearly, attached drawing needed in the embodiment will be done simply below
It introduces, it should be apparent that, drawings in the following description are only some embodiments of the invention, for ordinary skill people
For member, without creative efforts, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of flow chart for the method for establishing data frame bitmap provided in an embodiment of the present invention；
Fig. 2 is a kind of structural schematic diagram for the device for establishing data frame bitmap provided in an embodiment of the present invention；
Fig. 3 is a kind of hardware structural diagram for the device for establishing data frame bitmap provided in an embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, rather than whole embodiments.Based on this
Embodiment in invention, those of ordinary skill in the art are without making creative work, obtained every other
Embodiment belongs to the scope of the present invention.
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.
Next, a kind of method for establishing data frame bitmap provided by the embodiment of the present invention is discussed in detail.Fig. 1 is this hair
A kind of flow chart for method for establishing data frame bitmap that bright embodiment provides, this method comprises:
S101: the corresponding relationship of query logic address and physical address obtains the logical address institute of each pending data frame
Corresponding physical address.
Each data frame has its corresponding data frame logical address (logical base address, LBA) and data frame
Physical address (physical base address, PBA).Data frame logical address is by central processing unit (Central
Processing Unit, CPU) generate address.Data frame physical address true address corresponding when being data frame storage,
The specific storage location of data frame within the storage system can be determined according to data frame physical address.
In storing data, logical address can establish to the corresponding relationship of physical address, which can be to reflect
The form of firing table stores, that is, establish logical address to physical address mapping table (logical to physical table,
L2P)。
The data frame bitmap for including in computer systems can have it is multiple, at SSD in electric process, the data frame of loss
Bitmap may have one or more.By taking a data framing bit figure as an example, after the data frame bitmap is lost, need to the data frame
Bitmap is rebuild, correspondingly, data frame corresponding with the data frame bitmap is pending data frame.
In view of the logical address of each pending data frame, the corresponding relationship of logical address and physical address is known letter
Breath.Therefore, in embodiments of the present invention, can be obtained by the corresponding relationship of query logic address and physical address respectively wait locate
Manage physical address corresponding to the logical address of data frame.
It is patrolled specifically, may determine that in the corresponding relationship of logical address and physical address with the presence or absence of with target data frame
Collect the destination logical address that address matches；If so, using the corresponding physical address of the destination logical address as described in
The physical address of target data frame.
It, can be according to the logical address of each pending data frame, to each to be processed in order to avoid omitting pending data frame
Logically the sequence of address from low to high is ranked up data frame.
Since the pending data frame to make number one, in the corresponding relationship of decision logic address and physical address whether
The logical address to match in the presence of the logical address with the pending data frame；When it is present, then the logical address that will match to
Physical address of the corresponding physical address as pending data frame, and next pending data frame is handled.When
There is no when the logical address to match, then the physical address of the pending data frame can be set to 0, and to next wait locate
Reason data frame is handled.And so on, it is disposed until to all pending data frames.
S102: according to the physical address of target data frame, determining primary data framing bit figure corresponding to target data frame,
And the corresponding effective identifier of addition on position corresponding with physical address in primary data framing bit figure, to obtain number of targets
According to framing bit figure.
In computer systems, the basic format of data frame bitmap corresponding to each module is relatively fixed, and general one
Data frame bitmap may include 128, which can record the status information of 128 data frames.
Primary data framing bit figure can be regarded as the data frame bitmap for not recording status information.When data frame bitmap is lost
Afterwards, the status information recorded in each data bit in the data frame bitmap can lose, if it is possible to determine in corresponding data position
Status information can complete the reconstruction of data frame bitmap.In embodiments of the present invention, data frame bitmap is rebuild mainly to determine
Out in primary data framing bit figure corresponding data position status information.
Wherein, which may include effective status and invalid state.
In the concrete realization, identifier, which can be used, indicates the state of data frame, for example, indicating data frame with digital " 1 "
For valid data, indicate that data frame is invalid data with digital " 0 ".
The number of pending data frame may have multiple, and the processing mode of each pending data frame is similar, next will
By taking any one data frame, that is, target data frame in all pending data frames as an example, to the process flow of the target data frame
Expansion is introduced.
Physical address according to target data frame can know the specific location of its storage, it can determine the number of targets
According to where frame region and module, each module has its corresponding primary data framing bit figure, correspondingly, the target can be determined
It is which primary data framing bit figure corresponding to data frame.And according to the physical address of target data frame, mesh can be navigated to
Position of the data frame in primary data framing bit figure is marked, correspondingly, significance bit can be set by the position.For not traversing
Position, then can be defaulted as invalid bit.
Wherein, significance bit is set by the position, specifically, can be in the position added with effect identifier, for example, at this
Add digital " 1 " in position.For the position not traversed, then it can be defaulted as invalid bit, specifically, the position can be arranged
Invalidated identification symbol, for example, adding digital " 0 " in the position.
The process flow of reference object data frame can complete the processing to all pending data frames, to realize number
According to the reconstruction of framing bit figure.
The corresponding relationship of query logic address and physical address it can be seen from above-mentioned technical proposal obtains each to be processed
Physical address corresponding to the logical address of data frame；According to the physical address of target data frame, target data frame institute is determined
Corresponding primary data framing bit figure, and phase is added on position corresponding with the physical address in the primary data framing bit figure
The effective identifier answered, to obtain target data framing bit figure；Wherein target data frame is any in all pending data frames
One data frame, the process flow of reference object data frame can complete the processing to all pending data frames, to realize
The reconstruction of data frame bitmap.Using the technical solution data framing bit can be rebuild in time in the case where data frame bitmap is lost
Figure, improves the reliability and data stability of data frame bitmap.
Each module has its corresponding data framing bit figure, when the data frame in the module moves other modules,
The state letter of corresponding data position in the real-time adjustment data frame bitmap that effectively, can be adapted in order to guarantee data frame bitmap
Breath.
It, then can will be corresponding in target data framing bit figure specifically, when the physical address of target data frame changes
Effective identifier on position is revised as invalidated identification symbol；And according to the physical address after variation, the target data is determined
The current corresponding data frame bitmap of frame, and added on position corresponding with the physical address in the data frame bitmap
Corresponding effective identifier.
Using " 1 " as effective identifier, for " 0 " is as invalidated identification symbol, it is assumed that target data frame is stored in mould originally
On block a, target data frame is moved from module a to module b later.Wherein, module a is corresponding with data frame bitmap 1, and b pairs of module
There should be data frame bitmap 2, correspondingly, data bit corresponding with the target data frame in data frame bitmap 1 can be become from " 1 "
Data bit corresponding with the target data frame in data frame bitmap 2 is become " 1 " from " 0 " by " 0 ".
According to the variation of data frame storage location, modifies to corresponding data frame bitmap, ensure that data frame bitmap
Corresponding relationship between data frame ensure that the real-time effective of data frame bitmap.
Other than the moving of data frame, there is the case where deleting in data frame.It is similar that other modules are moved with data frame,
After data frame deletion in module, in order to guarantee data frame bitmap it is real-time effectively, the adjustment data framing bit that can be adapted
The status information of corresponding data position in figure.
Specifically, after delete target data frame, then by effective identifier in target data framing bit figure on corresponding position
It is revised as invalidated identification symbol.
Using " 1 " as effective identifier, for " 0 " is as invalidated identification symbol, it is assumed that target data frame is stored in module a
On, after target data frame is deleted from module a, correspondingly, can will be corresponding with the target data frame in data frame bitmap
Data bit becomes " 0 " from " 1 ".
According to the variation of data frame in module, modify to corresponding data frame bitmap, ensure that data frame bitmap with
Corresponding relationship between data frame ensure that the real-time effective of data frame bitmap.
Fig. 2 is a kind of structural schematic diagram for the device for establishing data frame bitmap provided in an embodiment of the present invention, and device includes
Acquiring unit 21 and determination unit 22；
Acquiring unit 21 obtains each pending data frame for the corresponding relationship of query logic address and physical address
Physical address corresponding to logical address；
Determination unit 22 is determined initial corresponding to target data frame for the physical address according to target data frame
Data frame bitmap, and the corresponding effective identifier of addition on position corresponding with physical address in primary data framing bit figure,
To obtain target data framing bit figure；Wherein target data frame is any one data frame in all pending data frames.
Optionally, query unit includes judgment sub-unit and as subelement；
Judgment sub-unit, for whether there is and target data frame in the corresponding relationship of decision logic address and physical address
The destination logical address that matches of logical address；If so, triggering is used as subelement；
As subelement, for using the corresponding physical address of destination logical address as target data frame physically
Location.
It optionally, further include modification unit and adding unit；
Unit is modified, for when the physical address of target data frame changes, then by phase in target data framing bit figure
Effective identifier on position is answered to be revised as invalidated identification symbol；
Adding unit, for when the physical address of target data frame changes, according to the physical address after variation, really
The current corresponding data frame bitmap of target data frame is made, and in data frame bitmap on position corresponding with physical address
Add corresponding effective identifier.
Optionally, modification unit is also used to after delete target data frame, then by corresponding position in target data framing bit figure
On effective identifier be revised as invalidated identification symbol.
The explanation of feature may refer to the related description of embodiment corresponding to Fig. 1 in embodiment corresponding to Fig. 2, here no longer
It repeats one by one.
The corresponding relationship of query logic address and physical address it can be seen from above-mentioned technical proposal obtains each to be processed
Physical address corresponding to the logical address of data frame；According to the physical address of target data frame, target data frame institute is determined
Corresponding primary data framing bit figure, and phase is added on position corresponding with the physical address in the primary data framing bit figure
The effective identifier answered, to obtain target data framing bit figure；Wherein target data frame is any in all pending data frames
One data frame, the process flow of reference object data frame can complete the processing to all pending data frames, to realize
The reconstruction of data frame bitmap.Using the technical solution data framing bit can be rebuild in time in the case where data frame bitmap is lost
Figure, improves the reliability and data stability of data frame bitmap.
Fig. 3 is a kind of hardware structural diagram for the device 30 for establishing data frame bitmap provided in an embodiment of the present invention, packet
It includes:
Memory 31, for storing computer program；
Processor 32, for executing the computer program to realize the step such as the above-mentioned method for establishing data frame bitmap
Suddenly.
The embodiment of the invention also provides a kind of computer readable storage medium, deposited on the computer readable storage medium
Computer program is contained, the step such as the above-mentioned method for establishing data frame bitmap is realized when the computer program is executed by processor
Suddenly.
It is provided for the embodiments of the invention a kind of method, apparatus for establishing data frame bitmap above and computer-readable deposits
Storage media is described in detail.Each embodiment is described in a progressive manner in specification, and each embodiment stresses
Be the difference from other embodiments, the same or similar parts in each embodiment may refer to each other.For implementing
For device disclosed in example, since it is corresponded to the methods disclosed in the examples, so being described relatively simple, related place ginseng
See method part illustration.It should be pointed out that for those skilled in the art, not departing from original of the invention
, can be with several improvements and modifications are made to the present invention under the premise of reason, these improvement and modification also fall into right of the present invention and want
In the protection scope asked.
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.
Claims (10)
1. a kind of method for establishing data frame bitmap characterized by comprising
The corresponding relationship of query logic address and physical address obtains physics corresponding to the logical address of each pending data frame
Address；
According to the physical address of target data frame, primary data framing bit figure corresponding to the target data frame is determined, and
Corresponding effective identifier is added in the primary data framing bit figure on position corresponding with the physical address, to obtain mesh
Mark data frame bitmap；Wherein the target data frame is any one data frame in all pending data frames.
2. the method according to claim 1, wherein the query logic address and the corresponding of physical address are closed
System, obtaining physical address corresponding to the logical address of each pending data frame includes:
Match in the corresponding relationship of decision logic address and physical address with the presence or absence of the logical address with target data frame
Destination logical address；
If so, using the corresponding physical address of the destination logical address as the physical address of the target data frame.
3. method according to claim 1 or 2, which is characterized in that also wrapped after obtaining the target data framing bit figure
It includes:
It, then will be in the target data framing bit figure on corresponding position when the physical address of the target data frame changes
Effective identifier is revised as invalidated identification symbol；
According to the physical address after variation, the current corresponding data frame bitmap of the target data frame is determined, and described
Corresponding effective identifier is added in data frame bitmap on position corresponding with the physical address.
4. according to the method described in claim 3, it is characterized in that, after obtaining the target data framing bit figure further include:
After deleting the target data frame, then effective identifier in the target data framing bit figure on corresponding position is modified
For invalidated identification symbol.
5. a kind of device for establishing data frame bitmap, which is characterized in that including acquiring unit and determination unit；
The acquiring unit obtains patrolling for each pending data frame for the corresponding relationship of query logic address and physical address
Collect physical address corresponding to address；
The determination unit is determined corresponding to the target data frame just for the physical address according to target data frame
Beginning data frame bitmap, and addition is corresponding has on position corresponding with the physical address in the primary data framing bit figure
Identifier is imitated, to obtain target data framing bit figure；Wherein the target data frame is appointing in all pending data frames
It anticipates a data frame.
6. device according to claim 5, which is characterized in that the query unit includes judgment sub-unit and as sub single
Member；
The judgment sub-unit, for whether there is and target data frame in the corresponding relationship of decision logic address and physical address
The destination logical address that matches of logical address；If so, triggering is described to be used as subelement；
It is described to be used as subelement, for using the corresponding physical address of the destination logical address as the target data frame
Physical address.
7. device according to claim 5 or 6, which is characterized in that further include modification unit and adding unit；
The modification unit, for when the physical address of the target data frame changes, then by the target data frame
Effective identifier in bitmap on corresponding position is revised as invalidated identification symbol；
The adding unit, for when the physical address of the target data frame changes, according to after variation physically
The current corresponding data frame bitmap of the target data frame is determined in location, and in the data frame bitmap with the physics
Corresponding effective identifier is added on the corresponding position in address.
8. device according to claim 7, which is characterized in that the modification unit is also used to when the deletion target data
After frame, then effective identifier in the target data framing bit figure on corresponding position is revised as invalidated identification symbol.
9. a kind of device for establishing data frame bitmap characterized by comprising
Memory, for storing computer program；
Processor establishes data framing bit for executing the computer program to realize as described in Claims 1-4 any one
The step of method of figure.
10. a kind of computer readable storage medium, which is characterized in that be stored with computer on the computer readable storage medium
Program is realized when the computer program is executed by processor establishing data frame bitmap as described in any one of Claims 1-4
The step of method.
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| CN201810660143.3A CN108959126A (en) | 2018-06-25 | 2018-06-25 | A kind of method, apparatus that establishing data frame bitmap and computer readable storage medium |
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| CN201810660143.3A CN108959126A (en) | 2018-06-25 | 2018-06-25 | A kind of method, apparatus that establishing data frame bitmap and computer readable storage medium |
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2018
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