CN108255426A - A kind of data processing method and device of SSD hard disks - Google Patents
A kind of data processing method and device of SSD hard disks Download PDFInfo
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- CN108255426A CN108255426A CN201711499249.1A CN201711499249A CN108255426A CN 108255426 A CN108255426 A CN 108255426A CN 201711499249 A CN201711499249 A CN 201711499249A CN 108255426 A CN108255426 A CN 108255426A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0602—Interfaces specially adapted for storage systems specifically adapted to achieve a particular effect
- G06F3/061—Improving I/O performance
- G06F3/0613—Improving I/O performance in relation to throughput
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- 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
- G06F3/0629—Configuration or reconfiguration of storage systems
-
- 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
- G06F3/0655—Vertical data movement, i.e. input-output transfer; data movement between one or more hosts and one or more storage devices
- G06F3/0656—Data buffering arrangements
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/06—Digital input from, or digital output to, record carriers, e.g. RAID, emulated record carriers or networked record carriers
- G06F3/0601—Interfaces specially adapted for storage systems
- G06F3/0668—Interfaces specially adapted for storage systems adopting a particular infrastructure
- G06F3/0671—In-line storage system
- G06F3/0673—Single storage device
- G06F3/0679—Non-volatile semiconductor memory device, e.g. flash memory, one time programmable memory [OTP]
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Memory System Of A Hierarchy Structure (AREA)
Abstract
The present invention provides a kind of data processing method and device of SSD hard disks, are related to technical field of information processing, the method includes：It is cached by Host transmission datas by host cache；When needing to brush into nand, transmitted after carrying out mapping relations construction by FTL to Media；The mapping relations are disassembled the write operation that the data are completed for corresponding physical location by Media；When mistake occurs for the write operation, after FTL re-starts mapping relations construction, transmitted again to Media, until being successfully written nand.Reach simplified logic, reduce the technique effect of flash disk operation.
Description
Technical field
The present invention relates to technical field of information processing more particularly to a kind of data processing method and device of SSD hard disks.
Background technology
SSD hard disks are fast due to write operation speed.Using flash memory as storage medium, reading speed relative mechanical hard disk is more
Soon, therefore solid hard disk can just be widely used in the fields such as military, vehicle-mounted, industrial, medical, aviation.
In the prior art, it when write error occurs for SSD hard disks, needs to issue the write command into the rewriting of media ends again, really
Protecting data finally can correctly write computer flash memory, and data will not just lose.
But present inventor has found that the above-mentioned prior art at least exists such as during technical solution of the present invention is realized
Lower technical problem：
There are logic complexity, the frequent technologies of flash disk operation for the processing method of SSD hard disks generation write error in the prior art
Problem.
Invention content
An embodiment of the present invention provides a kind of data processing method and device of SSD hard disks, solve SSD in the prior art
The technical issues of processing method that write error occurs for hard disk is complicated there are logic, and flash disk operation is frequent.
In view of the above problems, it is proposed that the embodiment of the present application is in order to provide a kind of data processing method and dress of SSD hard disks
It puts.
In a first aspect, the present invention provides a kind of data processing method of SSD hard disks, the method includes：Host is sent
Data are cached by host cache；When need brush into nand when, by FTL carry out mapping relations construction after transmit to
Media；The mapping relations are disassembled the write operation that the data are completed for corresponding physical location by Media；Behaviour is write when described
When making to occur mistake, after FTL re-starts mapping relations construction, transmitted again to Media, until being successfully written nand.
Preferably, the FTL re-starts mapping relations construction and further includes：By the lpn that mistake occurs and its corresponding number
According to getting back into host cache, and as normal host io processing.
Preferably, the method further includes：It, then will be old when host sends out new write command to the lpn of the mistake
Data replace with new data.
Second aspect, the present invention provides a kind of data processing equipment of SSD hard disks, described device includes：
First transmitting element, first transmitting element cache for Host transmission datas by host cache；
Second transmitting element, second transmitting element are used to, when needing to brush into nand, mapping relations are carried out by FTL
It is transmitted after construction to Media；
First disassembles unit, and described first, which disassembles unit, disassembles the mapping relations for corresponding physics for Media
Complete the write operation of the data in position；
Third transmitting element, the third transmitting element are used for when mistake occurs for the write operation, and FTL, which is re-started, to be reflected
It after penetrating relationship construction, is transmitted again to Media, until being successfully written nand.
Preferably, described device further includes：
First processing units, the lpn and its corresponding data that the first processing units are used to mistake will occur are got back into
In host cache, and as normal host io processing.
Preferably, described device further includes：
First replacement unit, first replacement unit are used to send out new write command to the lpn of the mistake as host
When, then old data are replaced with to new data.
The third aspect, the present invention provides a kind of data processing equipments of SSD hard disks, including memory, processor and deposit
The computer program that can be run on a memory and on a processor is stored up, the processor realizes following walk when performing described program
Suddenly：Host transmission datas are cached by host cache；When needing to brush into nand, after carrying out mapping relations construction by FTL
It transmits to Media；The mapping relations are disassembled the write operation that the data are completed for corresponding physical location by Media；
It when mistake occurs for the write operation, after FTL re-starts mapping relations construction, is transmitted again to Media, until success
Nand is written.
Said one or multiple technical solutions in the embodiment of the present application at least have following one or more technology effects
Fruit：
A kind of data processing method and device of SSD hard disks provided by the embodiments of the present application, are passed through by Host transmission datas
Cross host cache cachings；When needing to brush into nand, transmitted after carrying out mapping relations construction by FTL to Media；
The mapping relations are disassembled the write operation that the data are completed for corresponding physical location by Media；When the write operation occurs
During mistake, after FTL re-starts mapping relations construction, transmitted again to Media, until being successfully written nand.It solves
The technical issues of processing method of SSD hard disks generation write error is complicated there are logic in the prior art, and flash disk operation is frequent.Reach
Simplified logic reduces the technique effect of flash disk operation.
Above description is only the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention,
And it can be implemented in accordance with the contents of the specification, and in order to allow above and other objects of the present invention, feature and advantage can
It is clearer and more comprehensible, below the special specific embodiment for lifting the present invention.
Description of the drawings
Fig. 1 is a kind of flow diagram of the data processing method of SSD hard disks in the embodiment of the present invention；
Fig. 2 is a kind of structure diagram of the data processing equipment of SSD hard disks in the embodiment of the present invention；
Fig. 3 is the structure diagram of the data processing equipment of another kind SSD hard disks in the embodiment of the present invention
Specific embodiment
An embodiment of the present invention provides a kind of data processing method and device of SSD hard disks, for solving in the prior art
The technical issues of processing method that write error occurs for SSD hard disks is complicated there are logic, and flash disk operation is frequent.Skill provided by the invention
Art scheme general thought is as follows：
In the technical solution of the embodiment of the present invention, cached by Host transmission datas by host cache；Work as needs
When brushing into nand, transmitted after carrying out mapping relations construction by FTL to Media；Media by the mapping relations disassemble for
Corresponding physical location completes the write operation of the data；When mistake occurs for the write operation, FTL re-starts mapping relations
It after construction, is transmitted again to Media, until being successfully written nand.Reach simplified logic, reduce the technology of flash disk operation
Effect.
Technical solution of the present invention is described in detail below by attached drawing and specific embodiment, it should be understood that the application
Specific features in embodiment and embodiment are to the detailed description of technical scheme rather than to present techniques
The restriction of scheme, in the absence of conflict, the technical characteristic in the embodiment of the present application and embodiment can be combined with each other.
The terms "and/or", only a kind of incidence relation for describing affiliated partner, expression may have three kinds of passes
System, for example, A and/or B, can represent：Individualism A exists simultaneously A and B, these three situations of individualism B.In addition, herein
Middle character "/", it is a kind of relationship of "or" to typically represent forward-backward correlation object.
The application is illustrated in order to clearer, the professional term involved by the application is explained below：
1.host：Refer to mainframe computer, also referred to as large server.
2.host cache：The as buffer area of mainframe computer.
3.Nand：Nand flash memory is a kind of storage device more better than hard disk drive, should in the low capacity no more than 4GB
It shows to be still apparent in.As people persistently pursue, power consumption is lower, weight is lighter and performance more preferably product, NAND are demonstrate,proved
Bright very attractive.Nand flash memory is a kind of nonvolatile storage technologies, that is, remains to preserve data after powering off.Its developing goal
It is exactly to reduce per bit storage cost, improve memory capacity.
4.FTL：It is the english abbreviation of Flash translation layer, FTL is a kind of software middle layer, is initially
It is proposed by intel, for flash memory simulation to be become Virtual Block Device, so as to realize the block devices classes such as FAT on flash memory
File system.
5.Lpn：It is the english abbreviation of logic page number.
6.host io：It is the various read write commands that host side (host) is sent, io refers to input/output.
Embodiment one
The embodiment of the present application provides a kind of data processing method of SSD hard disks, and Fig. 1 is a kind of in the embodiment of the present invention
The flow diagram of the data processing method of SSD hard disks.Include as shown in Figure 1, stating method：
Step 110：Host transmission datas are cached by host cache；
Step 120：When needing to brush into nand, transmitted after carrying out mapping relations construction by FTL to Media；
Step 130：The mapping relations are disassembled the write operation that the data are completed for corresponding physical location by Media；
Step 140：When mistake occurs for the write operation, after FTL re-starts mapping relations construction, transmit again
To Media, until being successfully written nand；The FTL re-starts mapping relations construction and further includes：Will occur mistake lpn and
Its corresponding data is got back into host cache, and as normal host io processing.
Further, when host sends out new write command to the lpn of the mistake, then old data are replaced with new
Data.
Specifically, the data that Host is sent are cached by host cache, wherein, the Host refers to mainframe computer,
Also referred to as large server, the data that the Host is sent are cached by the buffer zone of server.When needs are brushed into flash memory
When, first pass through FTL carry out mapping relations tissue and construction, be packaged into corresponding write operation message and be sent to Media, by
Media is disassembled completes data write operation, then return result to FTL for the corresponding physical locations of nand, and FTL is according to different situations
Do corresponding processing.If writing failure, FTL can reorganize mapping relations, send write message again, until being successfully written
NAND。
Failure news is write, the lpn of failure and its corresponding data can be got back into host cache, as common
Host io are handled.For example, it writes miss data LPN0 to be got back into host cache, corresponding data DATA0.
If host sends out the instruction of read LPN0, FTL reads DATA0 directly from host cache and returns to host；
If host sends out the write command new to LPN0, the DATA0 in host cache is then covered as DATA1 by data DATA1.Such as
This, occurs dsc data the situation of write error, and data are easy to write replacement by new, reduces since write error processing is to old
The write-in of data.It, will be in host cache directly according to normal treatment mechanism when host cache needs are brushed into flash memory
The data encapsulation instruction of LPN0 is sent to media, and then NAND is written.Method provided by the embodiments of the present application and normal processing nothing
It is different, reach that logic is simple, and can reduce the technique effect of the number of flash disk operation.
Embodiment 2
Based on the same inventive concept of data processing method with SSD hard disks a kind of in previous embodiment, the present invention also carries
For a kind of data processing equipment of SSD hard disks, as shown in Fig. 2, including：
First transmitting element 11, first transmitting element 11 cache for Host transmission datas by host cache；
Second transmitting element 12, second transmitting element 12 are used to, when needing to brush into nand, be mapped by FTL
It is transmitted after relationship construction to Media；
First disassembles unit 13, and described first to disassemble unit 13 and disassemble the mapping relations for Media be corresponding
Physical location completes the write operation of the data；
Third transmitting element 14, the third transmitting element 14 be used for when the write operation occur mistake when, FTL again into
It after row mapping relations construction, is transmitted again to Media, until being successfully written nand.
Further, described device further includes：
First processing units, the lpn and its corresponding data that the first processing units are used to mistake will occur are got back into
In host cache, and as normal host io processing.
Further, described device further includes：
First replacement unit, first replacement unit are used to send out new write command to the lpn of the mistake as host
When, then old data are replaced with to new data.
The various change mode and specific example of a kind of data processing method of SSD hard disks in 1 embodiment 1 of earlier figures are same
Sample is suitable for a kind of data processing equipment of SSD hard disks of the present embodiment, by aforementioned to a kind of data processing side of SSD hard disks
The detailed description of method, those skilled in the art are clear that a kind of data processing equipment of SSD hard disks in the present embodiment
Implementation, so in order to illustrate the succinct of book, this will not be detailed here.
Embodiment 3
Based on the same inventive concept of data processing method with SSD hard disks a kind of in previous embodiment, the present invention also carries
For a kind of data processing equipment of SSD hard disks, computer program is stored thereon with, is realized above when which is executed by processor
A kind of the step of either method of the data processing method of SSD hard disks.
Wherein, in figure 3, bus architecture (being represented with bus 300), bus 300 can include any number of interconnection
Bus and bridge, bus 300 deposited what the one or more processors including being represented by processor 302 and memory 304 represented
The various circuits of reservoir link together.Bus 300 can also will peripheral equipment, voltage-stablizer and management circuit etc. it
Various other circuits of class link together, and these are all it is known in the art, and therefore, no longer it is carried out further herein
Description.Bus interface 306 provides interface between bus 300 and receiver 301 and transmitter 303.Receiver 301 and transmitter
303 can be same element, i.e. transceiver, provide the unit for communicating over a transmission medium with various other devices.
Processor 302 is responsible for bus 300 and common processing, and memory 304 can be used to store processor
302 perform operate when used data.
Said one or multiple technical solutions in the embodiment of the present application at least have following one or more technology effects
Fruit：
A kind of data processing method and device of SSD hard disks provided by the embodiments of the present application, are passed through by Host transmission datas
Cross host cache cachings；When needing to brush into nand, transmitted after carrying out mapping relations construction by FTL to Media；
The mapping relations are disassembled the write operation that the data are completed for corresponding physical location by Media；When the write operation occurs
During mistake, after FTL re-starts mapping relations construction, transmitted again to Media, until being successfully written nand.It solves
The technical issues of processing method of SSD hard disks generation write error is complicated there are logic in the prior art, and flash disk operation is frequent.Reach
Simplified logic reduces the technique effect of flash disk operation.
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, the reality in terms of complete hardware embodiment, complete software embodiment or combination software and hardware can be used in the present invention
Apply the form of example.Moreover, the computer for wherein including computer usable program code in one or more can be used in the present invention
The computer program production that usable storage medium is implemented on (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 it can be realized by computer program instructions every first-class in flowchart and/or the block diagram
The combination of flow and/or box in journey and/or box and flowchart and/or the block diagram.These computer programs can be provided
The processor of all-purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices is instructed to produce
A raw machine so that the instruction performed by computer or the processor of other programmable data processing devices is generated for real
The device of function 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 the instruction generation being 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 can be also loaded into computer or other programmable data processing devices so that counted
Series of operation steps are performed on calculation machine or other programmable devices to generate computer implemented processing, so as in computer or
The instruction offer performed on other programmable devices is used to implement 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.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
God and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (5)
1. a kind of data processing method of SSD hard disks, which is characterized in that the method includes：
Host transmission datas are cached by host cache；
When needing to brush into nand, transmitted after carrying out mapping relations construction by FTL to Media；
The mapping relations are disassembled the write operation that the data are completed for corresponding physical location by Media；
When mistake occurs for the write operation, after FTL re-starts mapping relations construction, transmitted again to Media, until
It is successfully written nand.
2. the method as described in claim 1, which is characterized in that the FTL re-starts mapping relations construction and further includes：
The lpn that mistake occurs and its corresponding data are got back into host cache, and give as normal host io
Processing.
3. the method as described in claim 1, which is characterized in that the method further includes：
When host sends out new write command to the lpn of the mistake, then old data are replaced with to new data.
4. a kind of data processing equipment of SSD hard disks, which is characterized in that described device includes：
First transmitting element, first transmitting element cache for Host transmission datas by host cache；
Second transmitting element, second transmitting element are used for when needing to brush into nand, and mapping relations construction is carried out by FTL
After transmit to Media；
First disassembles unit, and described first, which disassembles unit, disassembles the mapping relations for corresponding physical location for Media
Complete the write operation of the data；
Third transmitting element, the third transmitting element are used for when mistake occurs for the write operation, and FTL re-starts mapping and closes
It after series structure, is transmitted again to Media, until being successfully written nand.
5. a kind of data processing equipment of SSD hard disks, including memory, processor and storage on a memory and can be in processor
The computer program of upper operation, which is characterized in that the processor realizes following steps when performing described program：
Host transmission datas are cached by host cache；
When needing to brush into nand, transmitted after carrying out mapping relations construction by FTL to Media；
The mapping relations are disassembled the write operation that the data are completed for corresponding physical location by Media；When the write operation
When mistake occurs, after FTL re-starts mapping relations construction, transmitted again to Media, until being successfully written nand.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711499249.1A CN108255426B (en) | 2017-12-29 | 2017-12-29 | Data processing method and device for SSD (solid State disk) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711499249.1A CN108255426B (en) | 2017-12-29 | 2017-12-29 | Data processing method and device for SSD (solid State disk) |
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| CN108255426B CN108255426B (en) | 2021-04-20 |
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| WO2020087265A1 (en) * | 2018-10-30 | 2020-05-07 | Alibaba Group Holding Limited | System and method for reporting and handling flash programming failure in host-managed flash translation layer |
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| Publication number | Publication date |
|---|---|
| CN108255426B (en) | 2021-04-20 |
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