CN102375779A - Data processing method and data processing module - Google Patents
Data processing method and data processing module Download PDFInfo
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- CN102375779A CN102375779A CN2010102556837A CN201010255683A CN102375779A CN 102375779 A CN102375779 A CN 102375779A CN 2010102556837 A CN2010102556837 A CN 2010102556837A CN 201010255683 A CN201010255683 A CN 201010255683A CN 102375779 A CN102375779 A CN 102375779A
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Abstract
The embodiment of the invention discloses a data processing method and a data processing module, which are used for accelerating the data writing speed. The method provided by the embodiment of the invention comprises the following steps of: obtaining the correlation relationship among a physical block, a logic block, a physical page and a logic page; and inquiring writable physical block information according to the correlation relationship and data to be written, judging whether the writable physical block is writable or not, and if so, writing the data to be written into the writable physical block. The embodiment of the invention has the advantage that the data writing speed can be effectively accelerated.
Description
Technical field
The present invention relates to data processing field, particularly a kind of data processing method and data processing module.
Background technology
Current era needs the canned data amount increasing, and people are increasingly high for the memory requirement of information, and the storage of memory device and reading speed have also become puzzlement people's big problem; A lot of solid state hard discs; USB flash disk, though memory device capacity such as portable hard drive are big, per second carries out the number of times (IOPS of read-write operation; I/O per second), just the corresponding read or write speed of equipment is unsatisfactory.
Flash media is because its high capacity, and the long-life, characteristics such as non-volatile are by more and more widely the every field that is applied to; When flash media is carried out data manipulation, all be according to logical address flash media to be conducted interviews, flash media is to be that unit carries out data manipulation with the piece; In the prior art, the corresponding relation table of comparisons of logical block and physical block is arranged in the flash media, can know certain logical block corresponding physical piece through this table; Carry out data manipulation according to the actual physical piece again; But logical block is inner to also have logical page (LPAGE) to arrange in order, will be accurate to logical page (LPAGE) corresponding physical page or leaf during write data; Only rely on the corresponding relation table of comparisons of logical block and physical block can not be accurate to concrete page or leaf when reading and writing data, then influenced the speed of flash memory being carried out data manipulation.
Summary of the invention
The embodiment of the invention provides a kind of data processing method and data processing module that can improve writing speed.
The data processing method that the embodiment of the invention provides comprises: obtain physical block, logical block, the incidence relation between Physical Page and the logical page (LPAGE); Can write physical block information according to said incidence relation and data query to be written; Judge that whether the physical block write that inquires has living space and can write, if having, then writes the said physical block of writing with data to be written.
The data processing module that the embodiment of the invention provides comprises: acquiring unit is used to obtain physical block, logical block, the incidence relation between Physical Page and the logical page (LPAGE); Query unit is used for can writing physical block information according to incidence relation and data query to be written; Performance element is used to judge whether the physical block write that inquires has living space and can write, if having, then data to be written is write the said physical block of writing.
Can find out that from above technical scheme the embodiment of the invention has the following advantages:
In the embodiment of the invention, at first obtain physical block, logical block; Incidence relation between Physical Page and the logical page (LPAGE); Can write physical block information according to this incidence relation and data query to be written, judge whether the physical block write that inquires has living space and can write, if having; Then data to be written are write this and can write physical block; Because this kind scheme can accurately inquire and can write the Physical Page that can write data in the physical block, and data to be written are write this can write physical block, compare in the prior art with data to be written scattered write whole storage medium; The scheme of the embodiment of the invention can write what data to be written were concentrated, thereby has accelerated the random writing speed of data.
Description of drawings
Fig. 1 is embodiment synoptic diagram of data processing method in the embodiment of the invention;
Fig. 2 is another embodiment synoptic diagram of data processing method in the embodiment of the invention;
Fig. 3 is an equipment control area schematic in the embodiment of the invention;
Fig. 4 is information table management area, a district synoptic diagram in the embodiment of the invention;
Fig. 5 is embodiment synoptic diagram of data processing module in the embodiment of the invention.
Embodiment
The embodiment of the invention provides a kind of data processing method and data processing module, is used to accelerate the writing speed of data.
Need to prove that in the embodiment of the invention, storage medium is example with the flash memory, but is not limited to flash memory, can be other storage mediums of other similar flash operator schemes.
See also Fig. 1, data processing method one embodiment comprises in the embodiment of the invention:
101, obtain physical block, logical block, the incidence relation between Physical Page and the logical page (LPAGE);
Flash memory is that unit carries out data manipulation with the piece, and piece is divided into physical block and logical block, and piece is made up of page or leaf; Concrete page or leaf can be divided into Physical Page and logical page (LPAGE), when flash memory is carried out data manipulation, all according to logical address data to be visited in the flash memory is belonged to concrete physical address and conducts interviews; In the present embodiment, the physical block in the flash memory, logical block; Have certain incidence relation between Physical Page and the logical page (LPAGE), at first obtain this incidence relation, the concrete mode of obtaining will specify in the subsequent implementation example.
102, can write physical block information according to incidence relation and data query to be written;
Data to be written have corresponding logical address, and the incidence relation that obtains according to the logical address and the step 101 of data to be written can inquire the physical block information that can write data to be written.
103, judge whether the physical block write that inquires has living space and can write;
After inquiring the physical block that can write data, judge this and can write physical block and whether have living space and to write data to be written that have living space and write data if can write physical block, then execution in step 104.
104, data to be written are write to write physical block.
The physical block write that inquires when judgement has living space and can write, and then data to be written is write.
Need to prove; If judging the physical block write that inquires, step 103 do not have the space to write; Then can start recovery process, from the physical block of writing full invalid data or stale data, choose one and wipe, and the physical block after will wiping is as writing physical block; Perhaps can also from blank block, choose a physical block as writing physical block; Need to prove that the process that relevant physical block reclaims in present embodiment and the subsequent implementation example is those skilled in the art's a common practise, concrete mode is not done qualification here.
In the present embodiment, at first obtain physical block, logical block; Incidence relation between Physical Page and the logical page (LPAGE); Can write physical block information according to this incidence relation and data query to be written, judge whether the physical block write that inquires has living space and can write, if having; Then data to be written are write this and can write physical block; Because this kind scheme can accurately inquire and can write the Physical Page that can write data in the physical block, and data to be written are write this can write physical block, compare in the prior art with data to be written scattered write whole storage medium; The scheme of the embodiment of the invention can write what data to be written were concentrated, thereby has accelerated the random writing speed of data.
For ease of understanding, with another embodiment the data processing method in the embodiment of the invention is described in detail below:
See also Fig. 2, data processing method one embodiment comprises in the embodiment of the invention:
201, apparatus for establishing information table, district's information table and logical block information table;
In the present embodiment; When just having dispatched from the factory, flash memory device need carry out initialization; Apparatus for establishing information table in flash memory then; District's information table and logical block information table; The information and the physical block information of memory block information table that comprise the physical block of storing device information table in this facility information table comprise the information that can write physical block in information and the district of physical block of district's logic in memory block information table in this district's information table, this logical block information table is used for the corresponding relation of interior logical page address of presentation logic piece and physical page address.
Need to prove that in above-described three other information tables of level, what set up at first is the logical block information table, set up district's information table then, last apparatus for establishing information table.
202, obtain physical block, logical block, the incidence relation between Physical Page and the logical page (LPAGE);
Through step 201 apparatus for establishing information table, district's information table and logical block information table can obtain physical block, logical block, the incidence relation between Physical Page and the logical page (LPAGE).
Concrete; Owing to the information of the physical block that comprises the storing device information table in this facility information table and the physical block information of memory block information table; So can inquire a plurality of physical blocks region of storing device information table and a plurality of physical blocks region of memory block information table through the facility information table; Can obtain distinguishing the physical address of information table through area code inquiry apparatus information table, physical address reads district's information table content in district to be visited thus.
Further; Comprise the information that to write physical block in information and the district of physical block of district's logic in memory block information table in this district's information table; So can inquire the zone at the physical block place of district's logic in memory block information table through district's information table; And can write the physical block region in the district, and can inquire the physical address of depositing this logical block information table according to logical block number (LBN) interrogation zone information table in the district, read the content of this logical block information table through this physical address.
This logical block information table is used for the corresponding relation of interior logical page address of presentation logic piece and physical page address, thus can obtain the logical address physical address corresponding of data through the logical block information table, thus can write data.
203, obtain partition number, logical block number (LBN) and logical page number (LPN);
Obtain the area code of this logical address place subregion according to the logical address of data to be written, the page number of logical page (LPAGE) in the piece of logical block number and this logical block in this subregion.
204, inquire the management area at facility information table place;
Some essential informations that comprise flash memory in the redundant information of flash memory; Redundant information is left in the facility information table; Use in the process of flash memory, power at every turn and can obtain the zone that the facility information table is stored, be i.e. facility information table management area through the scanning redundant information.
Concrete, when powering on for the first time, flash memory device need carry out initialization, at first whole flash memory is scanned; In the available physical blocks that scanning obtains; Mark off one type of piece as the equipment control zone, be used to deposit the facility information table that step 201 is set up, district's information table and logical block information table; Also can deposit the empty piece that is used for balance wearing and tearing exchange in this type of piece, not limit here.
The equipment control zone has only one, sees also Fig. 3, and equipment control zone 301 comprises facility information table management area 302; Information table management area, district 303, wherein facility information table management area 302 is used for the storage equipment information table, like facility information table 3021 among Fig. 3 and facility information table 3022; Flash memory is divided into a lot of districts, and a lot of districts information table is arranged accordingly, and is as shown in Figure 3; District's information table 3031 is deposited in the information table management area, district 303 with district's information table 3032; The empty piece that is used for balance wearing and tearing exchange is deposited, like empty piece among Fig. 3 3041 and empty piece 3042 in the piece zone 304 of in equipment control zone 301, can also having time.
The district is made up of a lot of logical blocks, sees also Fig. 4, and information table management area, district 401 comprises logical block information table management area 402 and data block zone 403; A plurality of logical block information tables are arranged in the logical block information table management area 402, like logical block information table 4021 among Fig. 4, logical block information table 4022 and logical block information table 4023; In data block zone 403, deposit a plurality of data blocks, like data block among Fig. 4 4031; Data block 4032 and data block 4033; It is understandable that can also there be the physical block of other purposes information table management area, district, does not limit here.
205, scanning obtains up-to-date facility information table;
After having confirmed the management area of facility information table, can all pieces in this zone in the scanning device information table, obtain up-to-date facility information table.The mode of scanning can be the scan storage media redundant information, like the data of the special address of reading each unit of storage medium successively, can be other mode also, does not limit here.
206, inquiry can be write physical block information;
Obtain after the up-to-date facility information table; Management area through this up-to-date facility information table interrogation zone information table place; In the management area at this information table place, district, inquire about and read district's information table to be visited according to area code; Owing to comprise the information that to write physical block in district's information table, then can inquire about and to write physical block information through district's information table.
207～208, identical with aforementioned step 103～104 contents in embodiment illustrated in fig. 1, repeat no more here.
Need to prove; If judging the physical block write that inquires, step 207 do not have the space to write; Then can start recovery process, from the physical block of writing full invalid data or stale data, choose one and wipe, and the physical block after will wiping is as writing physical block; Perhaps can also from blank block, choose a physical block as writing physical block; Need to prove that the process that relevant physical block reclaims in present embodiment and the subsequent implementation example is those skilled in the art's a common practise, concrete mode is not done qualification here.
209, the current corresponding relation of writing interior Physical Page of piece and logical page (LPAGE) of arrangement;
When can write physical block write full after, through inquiring about the current information of writing piece, current each Physical Page and the corresponding relation of writing in the piece of logical page (LPAGE) put in order.
210, read and upgrade the current corresponding logical block information table of physical block of writing;
Read and renewal and the current corresponding logical block information table of physical block of writing; Then this logical block information table is stored in the logical block information table management area; Then writing the physical address of data and the corresponding informance of logical address just is stored in the logical block information table; Reading of data can inquire corresponding logical page (LPAGE) later on, directly reads, on the basis of renewal and stored logic block information table; Renewal and storage district's information table are accordingly upgraded and are also stored the corresponding apparatus information table to facility information table management area to distinguishing the information table management area.
211, record power-off protection label information;
Flash memory in use; The situation that has sudden power takes place; Working as data so writes fashionable if power-off illegally takes place; Then before power-off illegally, to write down the power-off protection label information, the information context of processing condition data when position that data processing was carried out when this power-off protection label information comprised outage and outage.
212, storage power-off protection label information;
Concrete, before power-off illegally takes place, according to the context of the power-off protection label information that writes down; Storage power-off protection label information is to corresponding memory block; The power-off protection label information has two types, and first kind power-off protection label information is recorded in the facility information table, together is stored in facility information table management area with this facility information table; Second type of power-off protection label information is recorded in district's information table; Together be stored in information table management area, district with this district's information table,, when power interruption recovering, can wipe fully because the physical block that is writing is the current physical block of writing; Do not need restore data, therefore just need in the logical block table, not store the outage label information yet.
The position of power interruption recovering label information storage is data processing is carried out during by outage a determining positions; For example; Flash memory outage when just information table is to information table management area, district in the memory block, the outage of this moment has caused the associated change of district's information table, owing to comprise the physical block information of memory block information table in the facility information table; Then flash memory is recorded in the power interruption recovering label information in the facility information table, together is stored in the facility information table management area with the facility information table.
Again for example; Flash memory outage when reclaiming logical block information table management area; The outage of this moment has caused the associated change of logical block information table; Owing to comprise the information of the physical block of district's logic in memory block information table in district's information table, then flash memory is recorded in logical block information in district's information table, together is stored in the information table management area, district with district's information table.
It is understandable that, in carrying out other processes of data processing, cut off the power supply that flash memory will be as the case may be before outage, stores the power interruption recovering label information into corresponding position.
213, according to power-off protection label information context restore data.
When flash memory powers on once more, read the power-off protection label information of storage when cutting off the power supply last time, according to different information context restore data.
In the present embodiment, in flash memory, set up the facility information table, district's information table and logical block information table; The information and the physical block information of memory block information table that comprise the physical block of storing device information table in the facility information table comprise the information that can write physical block in information and the district of physical block of district's logic in memory block information table in district's information table, the logical block information table is used for the corresponding relation of interior logical page address of presentation logic piece and physical page address; Through these three kinds of tables, when writing data, inquire from top to bottom and can write physical block; Judge this and can write physical block and have or not and to write the space, can write the space, then write data to the concrete Physical Page that to write physical block if having; When flash memory meets accident outage; Record and storage power interruption recovering label information, the information context of processing condition data when position that data processing was carried out when this power interruption recovering label information comprised outage and outage is when powering on once more; According to power-off protection label information context restore data; Thereby made things convenient for writing of data, accelerate to write the speed of data, and can effectively recover the data behind the power-off illegally.
Need to prove, all comprise the apparatus for establishing information table among the embodiment that describes in front, the process of district's information table and logical block information table; It is understandable that; In practical application, these three tables are not when carrying out the read-write process, all need set up at every turn, often only need when equipment dispatches from the factory, set up once; Then can directly use these three tables to the read-write process of equipment afterwards, and upgrade.
Describe in the face of the data processing module in the embodiment of the invention down, see also Fig. 5, the data processing equipment in the embodiment of the invention one embodiment comprises:
Acquiring unit 501 is used to obtain physical block, logical block, the incidence relation between Physical Page and the logical page (LPAGE);
Need to prove; If query unit 502 judges that the physical block write that inquires does not have the space to write; Then performance element 503 can also start recovery process, from the physical block of writing full invalid data or stale data, choose one and wipe, and the physical block after will wiping is as writing physical block; Perhaps can also from blank block, choose a physical block as writing physical block; Need to prove that the process that relevant physical block reclaims in present embodiment and the subsequent implementation example is those skilled in the art's a common practise, concrete mode is not done qualification here.
In the present embodiment, data processing module further can also comprise:
Set up unit 504; Be used for the apparatus for establishing information table; District's information table and logical block information table; The information and the physical block information of memory block information table that comprise the physical block of storing device information table in this facility information table comprise the information that can write physical block in information and the district of physical block of district's logic in memory block information table in this district's information table, this logical block information table is used for the corresponding relation of interior logical page address of presentation logic piece and physical page address;
Power cut-off information record cell 507, record power-off protection label information when being used for when writing data to be written, outage taking place, the information context of processing condition data when this power-off protection label information comprises outage;
Power cut-off information storage unit 508 is used for stating power-off protection label information context according to this power-off protection label information is stored;
In the present embodiment, it is base unit with the piece that flash memory carries out data manipulation, and piece can be divided into physical block and logical block again; Page or leaf in the corresponding piece can be divided into Physical Page and logical page (LPAGE), physical block so, logical block; Certain incidence relation is arranged between Physical Page and the logical page (LPAGE), can be by setting up unit 504 apparatus for establishing information tables, district's information table and logical block information table; The information and the physical block information of memory block information table that comprise the physical block of storing device information table in this facility information table; Comprise the information that can write physical block in information and the district of physical block of district's logic in memory block information table in this district's information table, this logical block information table is used for the corresponding relation of interior logical page address of presentation logic piece and physical page address, can obtain physical block through these three tables; Logical block, the incidence relation between Physical Page and the logical page (LPAGE).
And then get access to this incidence relation by acquiring unit 501; Then by scanning element 505 scan storage media; In the available physical blocks that scanning obtains, mark off and be used to deposit said facility information table, the physical block of district's information table and logical block information table; And through scanning the management area that redundant information inquires facility information table place, scanning obtains up-to-date facility information table in all pieces of the management area that this facility information table belongs to.
After obtaining up-to-date facility information table; Can write physical block information by query unit 502 according to this incidence relation and data query to be written; Performance element 503 judges whether the physical block write that is inquired has living space and can write, if having, then performance element 503 writes this with data to be written and can write physical block; When can write physical block write full after; This current each Physical Page and corresponding relation of logical page (LPAGE) of writing in the piece of 506 pairs of processing units is put in order, and reads and renewal and the current corresponding logical block information table of physical block of writing, so when writing Data Flash; Can inquire the physical block write that can write data apace, thereby accelerate the writing speed of data.
In when, when writing data to be written outage taking place; Power cut-off information record cell 507 record power-off protection label informations; The information context of processing condition data when this power-off protection label information comprises outage; Power cut-off information storage unit 508 is stated power-off protection label information context according to this power-off protection label information is stored, and when powering on once more, data recovery unit 509 reads this power-off protection label information; Information context according to comprising in the power-off protection label information recovers data, thereby can effectively recover the data behind the power-off illegally.
One of ordinary skill in the art will appreciate that all or part of step that realizes in the foregoing description method is to instruct relevant hardware to accomplish through program; Described program can be stored in a kind of computer-readable recording medium; The above-mentioned storage medium of mentioning can be a ROM (read-only memory), disk or CD etc.
More than a kind of data processing method provided by the present invention and data processing module have been carried out detailed introduction; For one of ordinary skill in the art; Thought according to the embodiment of the invention; The part that on embodiment and range of application, all can change, in sum, this description should not be construed as limitation of the present invention.
Claims (10)
1. a data processing method is characterized in that, comprising:
Obtain physical block, logical block, the incidence relation between Physical Page and the logical page (LPAGE);
Can write physical block information according to said incidence relation and data query to be written;
Judge that whether the physical block write that inquires has living space and can write, if having, then writes the said physical block of writing with data to be written.
2. according to the said method of claim 1, it is characterized in that, the said physical block that obtains, logical block, the incidence relation between Physical Page and the logical page (LPAGE) comprises:
The apparatus for establishing information table; District's information table and logical block information table; Comprise the information of the physical block of storing said facility information table and the physical block information of memory block information table in the said facility information table; Comprise the information that can write physical block in information and the district of physical block of district's logic in memory block information table in the said district information table, said logical block information table is used for the corresponding relation of interior logical page address of presentation logic piece and physical page address;
Through said facility information table, district's information table and logical block information table obtain said incidence relation.
3. according to the said method of claim 2, it is characterized in that, saidly can write physical block information according to incidence relation and data query to be written and comprise:
Obtain the area code of said logical address place subregion according to the logical address of data to be written, the page number of logical page (LPAGE) in the piece of logical block number and the said logical block in the said subregion;
Obtain up-to-date facility information table;
Through the management area at said up-to-date facility information table interrogation zone information table place, in the management area at said district information table place, inquire about and read district's information table to be visited according to area code, can write physical block information through district's information table inquiry.
4. according to claim 2 or 3 said methods, it is characterized in that, saidly obtain up-to-date facility information table and comprise:
Through the scanning redundant information, inquire the management area at facility information table place;
Scanning obtains up-to-date facility information table in all pieces of the management area that said facility information table belongs to.
5. according to claim 2 or 3 said methods, it is characterized in that, said data to be written are write to write comprise after the physical block:
When said write physical block write full after, current each Physical Page and the corresponding relation of writing in the piece of logical page (LPAGE) put in order;
Read and renewal and the current corresponding logical block information table of physical block of writing.
6. according to each described method of claim 1 to 3, it is characterized in that,
If when writing data to be written, cut off the power supply, then write down the power-off protection label information, the information context of processing condition data when said power-off protection label information comprises outage;
According to said information context said power-off protection label information is stored;
When powering on once more, read said power-off protection label information, data are recovered according to the said information context that comprises in the said power-off protection label information.
7. a data processing module is characterized in that, comprising:
Acquiring unit is used to obtain physical block, logical block, the incidence relation between Physical Page and the logical page (LPAGE);
Query unit is used for can writing physical block information according to incidence relation and data query to be written;
Performance element is used to judge whether the physical block write that inquires has living space and can write, if having, then data to be written is write the said physical block of writing.
8. module according to claim 7 is characterized in that, said data processing module also comprises:
Set up the unit; Be used for the apparatus for establishing information table; District's information table and logical block information table; Comprise the information of the physical block of storing said facility information table and the physical block information of memory block information table in the said facility information table, comprise the information that can write physical block in information and the district of physical block of district's logic in memory block information table in the said district information table, said logical block information table is used for the corresponding relation of interior logical page address of presentation logic piece and physical page address.
9. according to claim 7 or 8 described modules, it is characterized in that said data processing module also comprises:
Processing unit, be used for when said write physical block write full after, current each Physical Page and the corresponding relation of writing in the piece of logical page (LPAGE) put in order, and, read and renewal and the current corresponding logical block information table of physical block of writing.
10. according to claim 7 or 8 described modules, it is characterized in that said data processing module also comprises:
The power cut-off information record cell, record power-off protection label information when being used for when writing data to be written, outage taking place, the information context of processing condition data when said power-off protection label information comprises outage;
The power cut-off information storage unit is used for according to said power-off protection label information context said power-off protection label information being stored;
Data recovery unit is used for when powering on once more, reading said power-off protection label information, according to the said information context that comprises in the said power-off protection label information data is recovered.
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| CN103473321A (en) * | 2013-09-12 | 2013-12-25 | 华为技术有限公司 | Database management method and system |
| CN106293530A (en) * | 2016-08-09 | 2017-01-04 | 深圳市先天海量信息技术有限公司 | A kind of method for writing data and device |
| WO2017000821A1 (en) * | 2015-06-29 | 2017-01-05 | 华为技术有限公司 | Storage system, storage management device, storage device, hybrid storage device, and storage management method |
| CN111399750A (en) * | 2019-01-03 | 2020-07-10 | 慧荣科技股份有限公司 | Flash memory data writing method and computer readable storage medium |
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