CN108646982A - A kind of data self-repairing method and device based on UBIFS - Google Patents
A kind of data self-repairing method and device based on UBIFS Download PDFInfo
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/08—Error detection or correction by redundancy in data representation, e.g. by using checking codes
- G06F11/10—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's
- G06F11/1004—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's to protect a block of data words, e.g. CRC or checksum
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/08—Error detection or correction by redundancy in data representation, e.g. by using checking codes
- G06F11/10—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's
- G06F11/1008—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's in individual solid state devices
- G06F11/1048—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's in individual solid state devices using arrangements adapted for a specific error detection or correction feature
- G06F11/106—Correcting systematically all correctable errors, i.e. scrubbing
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/08—Error detection or correction by redundancy in data representation, e.g. by using checking codes
- G06F11/10—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's
- G06F11/1008—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's in individual solid state devices
- G06F11/1068—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's in individual solid state devices in sector programmable memories, e.g. flash disk
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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
- G06F3/0614—Improving the reliability of storage systems
- G06F3/0619—Improving the reliability of storage systems in relation to data integrity, e.g. data losses, bit errors
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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
- G06F3/0638—Organizing or formatting or addressing of data
- G06F3/0644—Management of space entities, e.g. partitions, extents, pools
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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
- G06F3/0646—Horizontal data movement in storage systems, i.e. moving data in between storage devices or systems
- G06F3/0652—Erasing, e.g. deleting, data cleaning, moving of data to a wastebasket
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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
- G06F3/0668—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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Abstract
The embodiment of the invention discloses a kind of data self-repairing methods and device being based on UBIFS (Unsorted Block Image File System, chaotic blocks mirror file system), wherein the method for the present invention includes：The subregion carry detection data for obtaining UBIFS determines that carry has damaged subregion extremely；The subregion of damage of carry exception wipe and carry again；It obtains the fileinfo to be verified stored in file verification list to verify file to be verified by check code verification mode, if verification failure, the file of verification failure is substituted for backup file corresponding with the file of verification failure.Solves UBIFS in actual use, due to unit exception power down, the stability of the mechanism of asynchronous refresh is unable to get guarantee, the technical issues of being susceptible to the case where failure of subregion carry is lost or occurred to critical file, and then cause system that can not run.
Description
Technical field
The present invention relates to field of computer technology more particularly to a kind of data self-repairing methods and dress based on UBIFS
It sets.
Background technology
In embedded systems, NANDFLASH is widely used due to the features such as at low cost, small, and
NANDFLASH's itself has some special physical characteristics：Page block structure, first wipe write afterwards, erasable limitation.To ensure
The reliability service of NANDFLASH needs to use special file system.
For Linux as one of most common embedded system, the flash memory file system overwhelming majority towards Linux is all base
In log-structured File system design, log-structured file system is used asynchronous not by the way of local update
Newer mode.UBIFS (chaotic blocks mirror file system) is a kind of flash file system of a new generation in linux system
System, as the succession of JFFS2, UBIFS mainly solve existing for JFFS2 file system mounting time is long, memory consumption is big,
The problem of poor expandability, wear leveling processing capacity difference.Although UBIFS overcomes weakness existing for JFFS2 and because of UBIFS sheet
The reliability of body obtains everybody affirmative, but in actual use, due to unit exception power down, the machine of asynchronous refresh
The stability of system is unable to get guarantee, is susceptible to the case where failure of subregion carry is lost or occurred to critical file, and then cause
The technical issues of system can not be run.
Invention content
The present invention provides a kind of data self-repairing method and device based on UBIFS is being actually used for solving
In, due to unit exception power down, the stability of the mechanism of asynchronous refresh is unable to get guarantee, is susceptible to critical file
The technical issues of losing or the case where subregion carry failure occur, and then causing system that can not run.
The present invention provides a kind of data self-repairing method based on UBIFS, including：
S1：The subregion carry detection data for obtaining UBIFS, determines the damage subregion of carry exception；
S2：The subregion of damage of carry exception wipe and carry again；
S3：The fileinfo to be verified in file verification list is obtained, by check code verification mode, to file to be verified
It is verified, if verification failure, the file of verification failure is substituted for backup file corresponding with the file of verification failure.
Preferably, step S2 is specifically included：
S21：According to the subregion carry detection data of the UBIFS got, statistics has damaged the quantity of subregion, if having damaged
The quantity of subregion is more than 1, then exits reparation, if the quantity for having damaged subregion is less than or equal to 1, thens follow the steps S22；
S22：Judgement has damaged the quantity of subregion, if the quantity for having damaged subregion is equal to 1, by traversing verification mode,
Locking has damaged subregion, and wipe and carry again to having damaged subregion, establishes data reparation subregion, then gets and deposit
The Backup Data that has damaged subregion damage before of the storage in non-damaging subregion, and write the Backup Data before subregion damages has been damaged
Enter data and repair subregion, then execute step S3, if the quantity for having damaged subregion is less than 1, directly executes step S3.
Preferably, step S3 is specifically included：
S31：Cyclic redundancy check is added to preset file, obtains the file to be verified of tape verifying code structure；
S32：Preset file verification listing file will be written by the file attribute for traversing the file to be verified got,
Obtain file verification list；
S33：The fileinfo to be verified in file verification list is obtained, by check code verification mode, to file verification
File to be verified in list is verified one by one, if verification failure, the file of verification failure is substituted for and is failed with verification
The corresponding backup file of file.
Preferably, further include before step S2：
S10：Release the mapping relations of UBI subregions and MTD subregions.
Preferably, the subregion carry detection data of UBIFS specifically includes：APP subregion carries data, BACKUP subregion carries
Data and DATA subregion carry data.
The present invention provides a kind of data automatic repariring equipment based on UBIFS, including：
Subarea detecting unit, the subregion carry detection data for obtaining UBIFS determine the damage point of carry exception
Area；
Divisional reconstruction unit, for the subregion of damage to carry exception wipe and carry again；
File verification unit, for obtaining the fileinfo to be verified in file verification list, by verifying code check side
Formula verifies file to be verified, if verification failure, the file of verification failure is substituted for the file phase with verification failure
Corresponding backup file.
Preferably, divisional reconstruction unit specifically includes：
Subregion counts subelement, and for the subregion carry detection data according to the UBIFS got, statistics has damaged subregion
Quantity exit reparations if the quantity for having damaged subregion is more than 1, if having damaged the quantity of subregion less than or equal to 1, transport
Row divisional reconstruction subelement；
Divisional reconstruction subelement, for judging that the quantity for having damaged subregion is led to if the quantity for having damaged subregion is equal to 1
Cross traversal verification mode, locking has damaged subregion, and wipe and carry again to having damaged subregion, establishes data reparation and divides
Then area gets the Backup Data damaged before subregion damage being stored in non-damaging subregion, and will damage subregion damage
Backup Data write-in data before bad repair subregion, then operating file verification unit, if the quantity for having damaged subregion is less than 1,
Then direct operating file verification unit.
Preferably, file verification unit specifically includes：
Check code addition subelement obtains waiting for for tape verifying code structure for cyclic redundancy check to be added to preset file
Verify file；
It verifies file and counts subelement, it is preset for that will be written by the file attribute for the file to be verified that traversal is got
File verification listing file, obtain file verification list；
File verification subelement, for obtaining the fileinfo to be verified in file verification list, by verifying code check
Mode verifies the file to be verified in file verification list one by one, if verification failure, the file of verification failure is replaced
Change backup file corresponding with the file of verification failure into.
Preferably, further include：
Map lifting unit, the mapping relations for releasing UBI subregions and MTD subregions.
Preferably, the subregion carry detection data of UBIFS specifically includes：APP subregion carries data, BACKUP subregion carries
Data and DATA subregion carry data.
As can be seen from the above technical solutions, the present invention has the following advantages：
The present invention provides a kind of data self-repairing method based on UBIFS, including：S1：The subregion for obtaining UBIFS is hung
Detection data is carried, determines that carry has damaged subregion extremely；S2：The subregion of damage of carry exception is wiped and is hung again
It carries；S3：The fileinfo to be verified in file verification list is obtained, by check code verification mode, file to be verified is carried out
The file of verification failure is substituted for backup file corresponding with the file of verification failure by verification if verification failure.
The present invention detects by UBIFS subregions and passes through check code automatically and file verification list carries out the automatic school of file
The combination tested, it is automatic to repair by the caused subregion of file system mounted exception or file corruption, solve in actual use, by
In the reason of the unit exception power down, the stability of the mechanism of asynchronous refresh is unable to get guarantee, is susceptible to critical file loss
Or there is the case where subregion carry failure, and then the technical issues of cause system that can not run, improve the reliability of system.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention without having to pay creative labor, may be used also for those of ordinary skill in the art
To obtain other attached drawings according to these attached drawings.
Fig. 1 is that a kind of flow of one embodiment of the data self-repairing method based on UBIFS provided by the invention is shown
It is intended to；
Fig. 2 is a kind of flow of another embodiment of the data self-repairing method based on UBIFS provided by the invention
Schematic diagram；
Fig. 3 is a kind of structural schematic diagram of the data automatic repariring equipment based on UBIFS provided in an embodiment of the present invention；
Fig. 4 is the data of the file to be verified in a kind of data self-repairing method based on UBIFS provided by the invention
Structural schematic diagram.
Specific implementation mode
An embodiment of the present invention provides a kind of data self-repairing method and device based on UBIFS, for actually making
In, due to unit exception power down, the stability of the mechanism of asynchronous refresh is unable to get guarantee, can UBIFS be gone out
The technical issues of showing the case where failure of subregion carry is lost or occurred to critical file, and then causing system that can not run.
In order to make the invention's purpose, features and advantages of the invention more obvious and easy to understand, below in conjunction with the present invention
Attached drawing in embodiment, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that disclosed below
Embodiment be only a part of the embodiment of the present invention, and not all embodiment.Based on the embodiments of the present invention, this field
All other embodiment that those of ordinary skill is obtained without making creative work, belongs to protection of the present invention
Range.
Referring to Fig. 1, an embodiment of the present invention provides a kind of data self-repairing method based on UBIFS, including：
101：The subregion carry detection data for obtaining UBIFS determines that carry has damaged subregion extremely.
It should be noted that writing the subregion that script file determines carry exception according to the df orders of Linux first.
102：The subregion of damage of carry exception wipe and carry again.
It should be noted that related tool (mtd_erase) can be erasable to abnormal subregion in mtdutils by calling
Except block content is wiped, ubi related tools (ubiattach/ubimkvol) is then called to re-establish subregion and carry, and
And use the content of file backup recovery this subregion on other subregions.
103：The fileinfo to be verified in file verification list is obtained, by check code verification mode, to text to be verified
Part is verified, if verification failure, the file of verification failure is substituted for backup text corresponding with the file of verification failure
Part.
It should be noted that the tail portion of vital document need to be increased to the region for having this document data field CRC check value, obtain
To the file to be verified containing cyclic redundancy check, self-test when for being switched on, wherein the data structure of file to be verified such as Fig. 4 institutes
Show, then the file attribute information of file to be verified is registered in file verification listing file, and by this document check list
File is saved in each user partition, obtains the fileinfo to be verified in file verification list, by verifying code check side
Formula, to the file to be verified in file verification list verified one by one when find file CRC check can not by when, using standby
Part file replaces current file；
In addition, can both adding in the tail portion in file data area for cyclic redundancy check, can also add the head in file data area
Portion is not construed as limiting herein；
The embodiment of the present invention detects by UBIFS subregions and passes through check code automatically and file verification list carries out file
The combination of automatic Verification, automatic to repair by the caused subregion of file system mounted exception or file corruption, solving actually makes
In, due to unit exception power down, the stability of the mechanism of asynchronous refresh is unable to get guarantee, can UBIFS be gone out
It the technical issues of showing the case where failure of subregion carry is lost or occurred to critical file, and then causing system that can not run, improves
The reliability of system.
It is a kind of retouching in detail for one embodiment of the data self-repairing method based on UBIFS provided by the invention above
It states, is below a kind of detailed description of another embodiment of the data self-repairing method based on UBIFS provided by the invention.
Referring to Fig. 2, an embodiment of the present invention provides a kind of data self-repairing method based on UBIFS, including：
201：The subregion carry detection data for obtaining UBIFS determines that carry has damaged subregion extremely.
It should be noted that writing the subregion that script file determines carry exception according to the df orders of Linux first.
202：Release the mapping relations of UBI subregions and MTD subregions.
203：According to the subregion carry detection data of the UBIFS got, statistics has damaged the quantity N of subregion, if having damaged
The quantity N of bad subregion is more than 1, then exits reparation, if the quantity N for having damaged subregion is less than or equal to 1, thens follow the steps 204.
204：Judge that the quantity N for having damaged subregion thens follow the steps 205, if if the quantity for having damaged subregion is equal to 1
The quantity N for damaging subregion is less than 1, then directly executes step 206.
205：By traversing verification mode, locking has damaged subregion, and wipe and carry again to having damaged subregion,
It establishes data and repairs subregion, then get the Backup Data damaged before subregion damage being stored in non-damaging subregion, and
The Backup Data write-in data before subregion damages will have been damaged and repaired subregion, then executed step 206.
It should be noted that related tool (mtd_erase) can be erasable to abnormal subregion in mtdutils by calling
Except block content is wiped, ubi related tools (ubiattach/ubimkvol) is then called to re-establish subregion and carry, and
And use the content of file backup recovery this subregion on other subregions.
206：Cyclic redundancy check is added to preset file, obtains the file to be verified of tape verifying code structure.
It should be noted that the region for having this document data field CRC check value need to be increased in the tail portion of vital document, obtain
To the file to be verified containing cyclic redundancy check, self-test when for being switched on, wherein the data structure of file to be verified such as Fig. 4 institutes
Show；
In addition, can both adding in the tail portion in file data area for cyclic redundancy check, can also add the head in file data area
Portion is not construed as limiting herein.
207：Preset file verification listing file will be written by the file attribute for traversing the file to be verified got,
Obtain file verification list.
It should be noted that the file attribute information of file to be verified is registered in file verification listing file, and will
This document check list file is saved in each user partition
208：The fileinfo to be verified in file verification list is obtained, by check code verification mode, to file verification
File to be verified in list is verified one by one, if verification failure, the file of verification failure is substituted for and is failed with verification
The corresponding backup file of file.
It should be noted that the fileinfo to be verified in file verification list is obtained, it is right by check code verification mode
File to be verified in file verification list verified one by one when find file CRC check can not by when, using store its
Backup file in his normal subregion replaces the file of current verification error.
209：Judge whether the file to be verified that currently verifies is the last one in file verification list, if so,
It completes this file verification and file repairs backed off after random reparation；If it is not, then returning to step 208.
The embodiment of the present invention detects by UBIFS subregions and passes through check code automatically and file verification list carries out file
The combination of automatic Verification, automatic to repair by the caused subregion of file system mounted exception or file corruption, solving actually makes
In, due to unit exception power down, the stability of the mechanism of asynchronous refresh is unable to get guarantee, can UBIFS be gone out
It the technical issues of showing the case where failure of subregion carry is lost or occurred to critical file, and then causing system that can not run, improves
The reliability of system.
It is a kind of retouching in detail for one embodiment of the data self-repairing method based on UBIFS provided by the invention above
It states, is below a kind of detailed description of one embodiment of the data automatic repariring equipment based on UBIFS provided by the invention.
Referring to Fig. 3, an embodiment of the present invention provides a kind of data automatic repariring equipment based on UBIFS, including：
Subarea detecting unit 301, the subregion carry detection data for obtaining UBIFS determine that carry has damaged point extremely
Area；
Divisional reconstruction unit 302, for the subregion of damage to carry exception wipe and carry again；
File verification unit 303, for obtaining the fileinfo to be verified in file verification list, by verifying code check
Mode verifies file to be verified, if verification failure, the file of verification failure is substituted for the file with verification failure
Corresponding backup file.
Further, divisional reconstruction unit specifically includes：
Subregion counts subelement 3021, and for the subregion carry detection data according to the UBIFS got, statistics has been damaged
The quantity of subregion exits reparation if the quantity for having damaged subregion is more than 1, if the quantity for having damaged subregion is less than or equal to 1,
Then run divisional reconstruction subelement 3022；
Divisional reconstruction subelement 3022, the quantity for judging to have damaged subregion, if the quantity for having damaged subregion is equal to 1,
Then by traversing verification mode, locking has damaged subregion, and wipe and carry again to having damaged subregion, establishes data and repaiies
Then subdivision area gets the Backup Data damaged before subregion damage being stored in non-damaging subregion, and will damage point
Backup Data write-in data before area's damage repair subregion, then run check code and add subelement 3031, if having damaged subregion
Quantity be less than 1, then direct operating file check code adds subelement 3031.
Further, file verification unit specifically includes：
Check code addition subelement 3031 obtains tape verifying code structure for cyclic redundancy check to be added to preset file
File to be verified；
It verifies file and counts subelement 3032, for will be written by traversing the file attribute of the file to be verified got
Preset file verification listing file, obtains file verification list；
File verification subelement 3033 passes through check code for obtaining the fileinfo to be verified in file verification list
Verification mode verifies the file to be verified in file verification list one by one, if verification failure, by the text of verification failure
Part is substituted for backup file corresponding with the file of verification failure.
Further, further include：
Map lifting unit 304, the mapping relations for releasing UBI subregions and MTD subregions.
Further, the subregion carry detection data of UBIFS specifically includes：APP subregion carries data, BACKUP subregions are hung
Carry data and DATA subregion carry data.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description,
The specific work process of device and unit, can refer to corresponding processes in the foregoing method embodiment, and details are not described herein.
In several embodiments provided herein, it should be understood that disclosed system, device and method can be with
It realizes by another way.For example, the apparatus embodiments described above are merely exemplary, for example, the unit
It divides, only a kind of division of logic function, formula that in actual implementation, there may be another division manner, such as multiple units or component
It can be combined or can be integrated into another system, or some features can be ignored or not executed.Another point, it is shown or
The mutual coupling, direct-coupling or communication connection discussed can be the indirect coupling by some interfaces, device or unit
It closes or communicates to connect, can be electrical, machinery or other forms.
The unit illustrated as separating component may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, you can be located at a place, or may be distributed over multiple
In network element.Some or all of unit therein can be selected according to the actual needs to realize the mesh of this embodiment scheme
's.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, it can also
It is that each unit physically exists alone, it can also be during two or more units be integrated in one unit.Above-mentioned integrated list
The form that hardware had both may be used in member is realized, can also be realized in the form of SFU software functional unit.
If the integrated unit is realized in the form of SFU software functional unit and sells or use as independent product
When, it can be stored in a computer read/write memory medium.Based on this understanding, technical scheme of the present invention is substantially
The all or part of the part that contributes to existing technology or the technical solution can be in the form of software products in other words
It embodies, which is stored in a storage medium, including some instructions are used so that a computer
Equipment (can be personal computer, server or the network equipment etc.) executes the complete of each embodiment the method for the present invention
Portion or part steps.And storage medium above-mentioned includes：USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only
Memory), random access memory (RAM, Random Access Memory), magnetic disc or CD etc. are various can store journey
The medium of sequence code.
The above, the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to before
Stating embodiment, invention is explained in detail, it will be understood by those of ordinary skill in the art that：It still can be to preceding
The technical solution recorded in each embodiment is stated to modify or equivalent replacement of some of the technical features；And these
Modification or replacement, the spirit and scope for various embodiments of the present invention technical solution that it does not separate the essence of the corresponding technical solution.
Claims (10)
1. a kind of data self-repairing method based on UBIFS, which is characterized in that including：
S1：The subregion carry detection data for obtaining UBIFS, determines the damage subregion of carry exception；
S2：The subregion of damage of carry exception wipe and carry again；
S3：The fileinfo to be verified stored in file verification list is obtained, by check code verification mode, to file to be verified
It is verified, if verification failure, the file of verification failure is substituted for backup file corresponding with the file of verification failure.
2. a kind of data self-repairing method based on UBIFS according to claim 1, which is characterized in that step S2 is specific
Including：
S21：According to the subregion carry detection data of the UBIFS got, statistics has damaged the quantity of subregion, if having damaged subregion
Quantity be more than 1, then exit reparations, if having damaged the quantity of subregion less than or equal to 1, then follow the steps S22；
S22：Judge that the quantity for having damaged subregion, by traversing verification mode, locks if the quantity for having damaged subregion is equal to 1
It has damaged subregion, and wipe and carry again to having damaged subregion, established data and repair subregion, then get and be stored in
The Backup Data damaged before subregion damage in non-damaging subregion, and number is written by the Backup Data before subregion damages has been damaged
According to subregion is repaired, step S3 is then executed, if the quantity for having damaged subregion is less than 1, directly executes step S3.
3. a kind of data self-repairing method based on UBIFS according to claim 2, which is characterized in that step S3 tools
Body includes：
S31：Cyclic redundancy check is added to preset file, obtains the file to be verified of tape verifying code structure；
S32：Preset file verification listing file will be written by the file attribute for traversing the file to be verified got, obtains
File verification list；
S33：The fileinfo to be verified in file verification list is obtained, by check code verification mode, to file verification list
In file to be verified verified one by one, if verification failure, will verification failure file be substituted for verification failure text
The corresponding backup file of part.
4. a kind of data self-repairing method based on UBIFS according to claim 1, which is characterized in that step S2 it
Before further include：
S10：Release the mapping relations of UBI subregions and MTD subregions.
5. a kind of data self-repairing method based on UBIFS according to claim 1, which is characterized in that the subregion of UBIFS
Carry detection data specifically includes：APP subregion carries data, BACKUP subregion carry data and DATA subregion carry data.
6. a kind of data automatic repariring equipment based on UBIFS, which is characterized in that including：
Subarea detecting unit, the subregion carry detection data for obtaining UBIFS, determines the damage subregion of carry exception；
Divisional reconstruction unit, for the subregion of damage to carry exception wipe and carry again；
File verification unit, it is right by check code verification mode for obtaining the fileinfo to be verified in file verification list
File to be verified is verified, if verification failure, the file of verification failure is substituted for corresponding with the file of verification failure
Backup file.
7. a kind of data automatic repariring equipment based on UBIFS according to claim 6, which is characterized in that divisional reconstruction
Unit specifically includes：
Subregion counts subelement, and for the subregion carry detection data according to the UBIFS got, statistics has damaged the number of subregion
Amount exits reparation if the quantity for having damaged subregion is more than 1, if the quantity for having damaged subregion is less than or equal to 1, operation point
Repair subelement in area；
Divisional reconstruction subelement, the quantity for judging to have damaged subregion, if the quantity for having damaged subregion is equal to 1, by time
Go through verification mode, locking has damaged subregion, and wipe and carry again to having damaged subregion, establishes data reparation subregion,
Then get be stored in non-damaging subregion damaged subregion damage before Backup Data, and will damage subregion damage before
Backup Data write-in data repair subregion, then operating file verification unit, if the quantity for having damaged subregion is less than 1, directly
Connect operating file verification unit.
8. a kind of data automatic repariring equipment based on UBIFS according to claim 7, which is characterized in that file verification
Unit specifically includes：
Check code addition subelement obtains the to be verified of tape verifying code structure for cyclic redundancy check to be added to preset file
File；
It verifies file and counts subelement, for preset text will be written by the file attribute for traversing the file to be verified got
Part check list file, obtains file verification list；
File verification subelement, for obtaining the fileinfo to be verified in file verification list, by check code verification mode,
File to be verified in file verification list is verified one by one, if verification failure, the file of verification failure is substituted for
Backup file corresponding with the file of verification failure.
9. a kind of data self-repairing method based on UBIFS according to claim 6, which is characterized in that further include：
Map lifting unit, the mapping relations for releasing UBI subregions and MTD subregions.
10. a kind of data self-repairing method based on UBIFS according to claim 6, which is characterized in that point of UBIFS
Area's carry detection data specifically includes：APP subregion carries data, BACKUP subregion carry data and DATA subregion carry data.
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