CN106033362A - Method and device for processing flash memory partition - Google Patents

Method and device for processing flash memory partition Download PDF

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Publication number
CN106033362A
CN106033362A CN201510112437.9A CN201510112437A CN106033362A CN 106033362 A CN106033362 A CN 106033362A CN 201510112437 A CN201510112437 A CN 201510112437A CN 106033362 A CN106033362 A CN 106033362A
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China
Prior art keywords
partition
subregion
critical applications
application
file
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CN201510112437.9A
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Chinese (zh)
Inventor
马令申
王艳辉
杨春晖
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Beijing Visionvera International Information Technology Co Ltd
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Beijing Visionvera International Information Technology Co Ltd
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Priority to CN201510112437.9A priority Critical patent/CN106033362A/en
Publication of CN106033362A publication Critical patent/CN106033362A/en
Pending legal-status Critical Current

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Abstract

Embodiments of the invention provide a method and a device for processing flash memory partition. The method comprises: dividing a flash memory into a root file system partition and an application partition; mounting the root file system partition in a read-only mode, wherein the root file system partition includes a startup script and a system program; and mounting the application partition in a reading-writing mode. The method and the device can improve stability of a flash memory file system.

Description

A kind for the treatment of method and apparatus of flash partition
Technical field
The present invention relates to field of embedded technology, particularly relate to a kind of flash partition processing method and Device.
Background technology
Flash memory (Flash Memory) is a kind of nonvolatile memory, is called for short flash memory.At present Mainly there is the flash memory of two kinds of main flows, be NOR-type and NAND respectively.NAND-type flash memory has wiping Except speed soon, the advantage such as writing speed is fast in batches, capacity is big, there is the prospect that is more widely applied.
UBIFS (Unsorted Block Image File System, chaotic blocks image file system) is The flash memory file system of new generation researched and developed on Linux, UBIFS flash memory file system is mainly used in NAND-type flash memory.Relative to JFFS2 (flash log type file system second edition, Journalling Flash File System Version 2) need to scan all nodes on flash memory, UBIFS in carry process Index data also leave on flash memory, therefore there is the fireballing feature of carry.
But, in actual applications, if performing to repair for the subregion using UBIFS file system Change unexpected power-off during operation, easily cause file and lose, even result in the damage of UBIFS file system, This greatly have impact on the stability of system.
Summary of the invention
Embodiment of the present invention technical problem to be solved be to provide a kind of flash partition processing method and Device, it is possible to increase the stability of flash memory file system.
In order to solve the problems referred to above, the invention discloses the processing method of a kind of flash partition, including:
Flash memory is divided into root file system subregion and application partition;
With read-only mode, described root file system subregion is carried out carry;Wherein, described root file system divides District includes starting script and system program;
With read-write mode, described application partition is carried out carry.
Preferably, also including that critical applications backs up in described root file system subregion, described method is also Including:
If application partition file system crash, then described application partition is performed format manipulation;
Replicate described critical applications from root file system subregion and backup to described application partition.
Preferably, described application partition includes that critical applications, described method also include:
Critical applications in described application partition is upgraded.
Preferably, the described step that critical applications in described application partition is upgraded, including:
Using the renewable critical applications downloaded to cover original key in described application partition should By program, and the critical applications after covering is performed verification operation.
Preferably, also including that critical applications backs up in described root file system subregion, described method is also Including:
Critical applications in described application partition is verified, if verifying unsuccessfully, then from described File partition is replicated described critical applications and backups to described application partition.
Preferably, described root file system subregion and application partition use UBIFS file system.
According to another aspect of the present invention, it is provided that the processing means of a kind of flash partition, including:
Division operation module, for being divided into root file system subregion and application partition by flash memory;
Root partition carry module, for carrying out carry with read-only mode to described root file system subregion;Its In, described root file system subregion includes starting script and system program;And
Application partition carry module, for carrying out carry with read-write mode to described application partition.
Preferably, also including that critical applications backs up in described root file system subregion, described device is also Including:
Format manipulation module, for when application partition file system crash, holds described application partition Formatting lines operates;
Replicate and recover module, backup to institute for replicating described critical applications from root file system subregion State application partition.
Preferably, described application partition includes that critical applications, described device also include:
Upgraded module, for upgrading to the critical applications in described application partition.
Preferably, described upgraded module, specifically for using the renewable critical applications downloaded to cover Cover original critical applications in described application partition, and the critical applications after covering is performed Verification operation.
Preferably, also including that critical applications backs up in described root file system subregion, described device is also Including:
Correction verification module, for verifying the critical applications in described application partition, if verification is lost Lose, then from described root file system subregion, replicate described critical applications backup to described application and divide District.
Compared with prior art, the embodiment of the present invention includes advantages below:
Flash memory is divided at least two subregion by the embodiment of the present invention: root file system subregion and application partition, And startup script and system program are deposited in root file system subregion, with read-only mode to described literary composition Part system partitioning carries out carry, with read-write mode, described application partition is carried out carry;Due to root file system System subregion is read-only carry, and therefore user cannot be to the startup script in root file system subregion and system journey Sequence is modified, and can only operate the file in application partition, such that make unexpected power-off also only The file in application partition can be caused to lose, the startup script in root file system subregion can be avoided and be System program is damaged, thus ensures that the embedded systems such as linux can normally open powering on when every time Move and use, improving the stability of system.
Accompanying drawing explanation
Fig. 1 shows the flow chart of steps of the processing method embodiment one of a kind of flash partition of the present invention;
Fig. 2 shows the flow chart of steps of the processing method embodiment two of a kind of flash partition of the present invention;
Fig. 3 shows the flow chart of steps of the processing method embodiment three of a kind of flash partition of the present invention;
Fig. 4 shows the structured flowchart of the processing means of a kind of flash partition of the present invention.
Detailed description of the invention
Understandable for enabling the above-mentioned purpose of the present invention, feature and advantage to become apparent from, below in conjunction with attached The present invention is further detailed explanation with detailed description of the invention for figure.
Embodiment one
With reference to Fig. 1, it is shown that the step stream of the processing method embodiment one of a kind of flash partition of the present invention Cheng Tu, specifically may include that
Step 101, flash memory is divided into root file system subregion and application partition;
In built-in field, flash memory (FLASH) is a kind of conventional storage medium, owing to it is special Hardware configuration, common file system is not suitable for using on a flash, has then occurred as soon as special pin File system to FLASH, the more commonly used has JFFS2, UBIFS.
System stability is required the highest, if when modifying system file by embedded system Suddenly power-off, easily causes file and loses, even result in the damage of file system, the most greatly affect The stability of system.
In order to improve the stability of system, flash memory is divided at least two subregion by the embodiment of the present invention: root is civilian Part system partitioning and application partition.In one preferred embodiment of the invention, described root file system divides District and application partition use UBIFS file system.Certainly, above-mentioned UBIFS file system is simply As example, those skilled in the art can choose root file system subregion flexibly and application partition is used File system, as YAFFS (another file system, Yet Another Flash File System), JFFS (flash log type file system second edition, Journalling Flash File System Version 2) Etc., the present invention is not particularly limited for the concrete number of partitions of concrete file system and flash memory.
Step 102, with read-only mode, described root file system subregion is carried out carry;Wherein, described File partition specifically can include start script and system program;
In the embodiment of the present invention, root file system subregion may be used for depositing startup script and system program Etc. data, and when system start-up, with read-only mode, root file system subregion is carried out carry.Due to In actual applications, the startup script in root file system subregion and the probability of system program are generally revised The least, therefore, root file system subregion is carried out carry with read-only mode, it is possible to make for root literary composition The read-write operation of part system partitioning is rejected, therefore, it is possible to avoid root file system subregion is modified Situation such that it is able to avoid the file of the root file system subregion that unexpected power-off causes and file system Damage, thus improve the stability of system.
In a kind of application example of the present invention, repair needing the file in root file system subregion When changing, can perform the mount order of linux is read-write side by root file system subregion carry again Formula, and, after file modification completes, then perform mount order and by root file system subregion carry be Read-only mode.
Step 103, with read-write mode, described application partition is carried out carry.
In the embodiment of the present invention, application partition may be used for depositing the application program that user commonly uses, these journeys Sequence does not interferes with startup and the operation of system, and therefore, application partition carries out carry with read-write mode, even if The file of application partition and the file system of correspondence are damaged, but will not damage root file system subregion In startup script and system program, start thus without affecting the normal of system and use, thus protecting The stability of card system.
To sum up, flash memory is divided at least two subregion by the present invention: root file system subregion and application partition, And startup script and system program are deposited in root file system subregion, with read-only mode to described literary composition Part system partitioning carries out carry, with read-write mode, described application partition is carried out carry;Due to root file system System subregion is read-only carry, and therefore user cannot be to the startup script in root file system subregion and system journey Sequence is modified, and can only operate the file in application partition, such that make unexpected power-off also only The file in application partition can be caused to lose, the startup script in root file system subregion can be avoided and be System program is damaged, thus ensures that the embedded systems such as linux can normally open powering on when every time Move and use, improving the stability of system.
Embodiment two
The processing method of the flash partition of the present embodiment is on the basis of above-described embodiment one, further also Following optional technical scheme can be included.
In one preferred embodiment of the invention, described root file system subregion can also include key Application Backup, with reference to Fig. 2, it is shown that the processing method embodiment of a kind of flash partition of the present invention The flow chart of steps of two, specifically may include that
Step 201, flash memory is divided into root file system subregion and application partition;
Step 202, with read-only mode, described root file system subregion is carried out carry;Wherein, described File partition specifically can include start script, system program and critical applications backup;
Except startup script and system program can be deposited in root file system subregion, it is also possible to back up Critical applications, such as, carry out the application program of basic communication with server, these critical applications For downloading up-to-date business application bag from server, business application here can be used for performing Applied business.Listing critical applications, is not usually required to modify, therefore can put into read-only In root file system subregion.
Step 203, with read-write mode, described application partition is carried out carry;
If step 204 application partition file system crash, then perform to format behaviour to described application partition Make;
Specifically, after root file system subregion carry, script such as shell script can be passed through, it is judged that Whether application partition file system collapses, if application partition file system crash, then to described application partition Performing format manipulation, such as reformatting application partition is UBIFS file system.
Step 205, replicate described critical applications from root file system subregion and backup to described application and divide District.
If application partition file system crash, then all application in application partition all cannot use, therefore, The critical applications carrying out basic communication with server is backed up at root file system by the embodiment of the present invention In, when application partition file system crash, these crucial application can be replicated from root file system subregion Program backup to described application partition, to ensure that the basic function of system can normally use, thus carry The stability of high system.
Embodiment three
With reference to Fig. 3, it is shown that the step stream of the processing method embodiment three of a kind of flash partition of the present invention Cheng Tu, specifically may include that
Step 301, flash memory is divided into root file system subregion and application partition;
Step 302, with read-only mode, described root file system subregion is carried out carry;Wherein, described File partition specifically can include start script and system program;
Step 303, with read-write mode, described application partition is carried out carry;
Step 304, the critical applications in described application partition is upgraded.
In implementing, the described step that critical applications in described application partition is upgraded Suddenly, may include that the renewable critical applications using download covers in described application partition original Critical applications, and to cover after critical applications perform verification operation.
In actual applications, when upgrading is needed for critical applications, can be judged by script Whether there is renewable critical applications inside the current application program updating bag downloaded, such as, can lead to Cross version number to judge;If it has, then the renewable critical applications downloaded is copied to application Subregion, covers original critical applications, and the critical applications after covering performs verification behaviour Make, and preserve verification file to this critical applications place catalogue;If it is not, the system of use is write from memory That recognizes replicates, from root file system subregion, the acquiescence critical applications come.
In a kind of application example of the present invention, the critical applications after upgrading is only stored in application point Qu Zhong, is verified simultaneously, but the critical applications after upgrading need not be backed up to root file system Subregion, to ensure that back up in root file system subregion is the executable crucial application journey of system default Sequence, needs perform critical applications when, if can not find this document, or finds this document, But it is obstructed out-of-date to verify, then the critical applications backup of acquiescence in root file system can be used to replace The application program of this damage.
To sum up, in the embodiment of the present invention, root file system subregion only preserves the critical applications of acquiescence Backup, when the critical applications in application partition being had to the demand of upgrading, to the pass in application partition Key application program is upgraded so that user can use the key of latest edition when system is properly functioning Application program, and when file corruption in application partition file system crash or application partition, permissible The critical applications of backup in root file system subregion is used to replace the critical applications damaged.Due to In root file system subregion, only back up the critical applications of system default, therefore, it can to root In the case of file partition storage demand is less, it is ensured that system always can be properly functioning, to improve The stability of system.
In one preferred embodiment of the invention, described root file system subregion can also include key Application Backup, described method can also include: enters the critical applications in described application partition Row verification, if verifying unsuccessfully, then replicates critical applications from described root file system subregion and backups to Described application partition.
In a particular application, in order to ensure the stability of whole system, in performing described application partition Before critical applications, critical applications can be verified, such as MD5 (Message Digest Algorithm 5, Message Digest Algorithm 5) verification, if MD5 verifies unsuccessfully, then explanation should Critical applications may have been damaged, then replicate critical applications backup from root file system subregion To described application partition, after verification, under preservation verification file to critical applications place catalogue.
If additionally, run into the situation that in application partition, critical applications is lost, it is also possible to from root file System partitioning replicates critical applications and backups to described application partition.Due at root file system subregion Middle backup has the critical applications relevant to communication to back up so that the critical applications in application partition When there is corrupted or lost situation, can replace this key with the backup in root file system subregion should By program, thus ensure that user can normally use the basic function of system, thus improve stablizing of system Property.
Device embodiment
With reference to Fig. 4, it is shown that the structured flowchart of the processing means of a kind of flash partition of the present invention, specifically may be used To include:
Division operation module 410, for being divided into root file system subregion and application partition by flash memory;
Root partition carry module 420, for carrying out carry with read-only mode to described root file system subregion; Wherein, described root file system subregion includes starting script and system program;And
Application partition carry module 430, for carrying out carry with read-write mode to described application partition.
In one preferred embodiment of the invention, described root file system subregion can also include key Application Backup, described device can also include:
Format manipulation module, for when application partition file system crash, holds described application partition Formatting lines operates;
Replicate and recover module, backup to institute for replicating described critical applications from root file system subregion State application partition.
In another preferred embodiment of the invention, described application partition includes critical applications, Described device can also include:
Upgraded module, for upgrading to the critical applications in described application partition.
In another preferred embodiment of the present invention, described upgraded module, specifically may include that
Updating operation submodule, for using the renewable critical applications of download to cover described application Original critical applications in subregion, and the critical applications after covering is performed verification operation.
In the still another preferable embodiment of the present invention, described root file system subregion can also include close Key Application Backup, described device can also include:
Correction verification module, for verifying the critical applications in described application partition, if verification is lost Lose, then from described root file system subregion, replicate described critical applications backup to described application and divide District.
For device embodiment, due to itself and embodiment of the method basic simlarity, so the comparison described Simply, relevant part sees the part of embodiment of the method and illustrates.
Each embodiment in this specification all uses the mode gone forward one by one to describe, and each embodiment stresses Be all the difference with other embodiments, between each embodiment, identical similar part sees mutually ?.
Those skilled in the art are it should be appreciated that the embodiment of the embodiment of the present invention can be provided as method, dress Put or computer program.Therefore, the embodiment of the present invention can use complete hardware embodiment, completely Software implementation or the form of the embodiment in terms of combining software and hardware.And, the embodiment of the present invention Can use and can be situated between with storage at one or more computers wherein including computer usable program code The upper computer journey implemented of matter (including but not limited to disk memory, CD-ROM, optical memory etc.) The form of sequence product.
The embodiment of the present invention is with reference to method according to embodiments of the present invention, terminal unit (system) and meter The flow chart of calculation machine program product and/or block diagram describe.It should be understood that can be by computer program instructions Each flow process in flowchart and/or block diagram and/or square frame and flow chart and/or square frame Flow process in figure and/or the combination of square frame.Can provide these computer program instructions to general purpose computer, The processor of special-purpose computer, Embedded Processor or other programmable data processing terminal equipment is to produce One machine so that performed by the processor of computer or other programmable data processing terminal equipment Instruction produce for realizing at one flow process of flow chart or multiple flow process and/or one square frame of block diagram or The device of the function specified in multiple square frames.
These computer program instructions may be alternatively stored in and computer or other programmable datas can be guided to process In the computer-readable memory that terminal unit works in a specific way so that be stored in this computer-readable Instruction in memorizer produces the manufacture including command device, and this command device realizes flow chart one The function specified in flow process or multiple flow process and/or one square frame of block diagram or multiple square frame.
These computer program instructions also can be loaded into computer or other programmable data processing terminals set Standby upper so that on computer or other programmable terminal equipment, to perform sequence of operations step in terms of producing The process that calculation machine realizes, thus the instruction performed on computer or other programmable terminal equipment provides and uses In realizing in one flow process of flow chart or multiple flow process and/or one square frame of block diagram or multiple square frame The step of the function specified.
Although having been described for the preferred embodiment of the embodiment of the present invention, but those skilled in the art being once Know basic creative concept, then these embodiments can be made other change and amendment.So, Claims are intended to be construed to include preferred embodiment and fall into the institute of range of embodiment of the invention There are change and amendment.
Finally, in addition it is also necessary to explanation, in this article, the relation art of such as first and second or the like Language is used merely to separate an entity or operation with another entity or operating space, and not necessarily Require or imply relation or the order that there is any this reality between these entities or operation.And And, term " includes ", " comprising " or its any other variant are intended to comprising of nonexcludability, from And make to include that the process of a series of key element, method, article or terminal unit not only include that those are wanted Element, but also include other key elements being not expressly set out, or also include for this process, side The key element that method, article or terminal unit are intrinsic.In the case of there is no more restriction, by statement The key element that " including one ... " limits, it is not excluded that including the process of described key element, method, thing Product or terminal unit there is also other identical element.
Treating method and apparatus to a kind of flash partition provided by the present invention above, has been carried out in detail Introducing, principle and the embodiment of the present invention are set forth by specific case used herein, with The explanation of upper embodiment is only intended to help to understand method and the core concept thereof of the present invention;Meanwhile, right In one of ordinary skill in the art, according to the thought of the present invention, at detailed description of the invention and application model Placing and all will change, in sum, this specification content should not be construed as the limit to the present invention System.

Claims (11)

1. the processing method of a flash partition, it is characterised in that described method includes:
Flash memory is divided into root file system subregion and application partition;
With read-only mode, described root file system subregion is carried out carry;Wherein, described root file system divides District includes starting script and system program;
With read-write mode, described application partition is carried out carry.
2. the method for claim 1, it is characterised in that in described root file system subregion also Backing up including critical applications, described method also includes:
If application partition file system crash, then described application partition is performed format manipulation;
Replicate described critical applications from root file system subregion and backup to described application partition.
3. the method for claim 1, it is characterised in that described application partition includes key Application program, described method also includes:
Critical applications in described application partition is upgraded.
4. method as claimed in claim 3, it is characterised in that described in described application partition Critical applications carries out the step upgraded, including:
Using the renewable critical applications downloaded to cover original key in described application partition should By program, and the critical applications after covering is performed verification operation.
5. the method for claim 1, it is characterised in that in described root file system subregion also Backing up including critical applications, described method also includes:
Critical applications in described application partition is verified, if verifying unsuccessfully, then from described File partition is replicated described critical applications and backups to described application partition.
6. the method for claim 1, it is characterised in that described root file system subregion and should UBIFS file system is used with subregion.
7. the processing means of a flash partition, it is characterised in that described device includes:
Division operation module, for being divided into root file system subregion and application partition by flash memory;
Root partition carry module, for carrying out carry with read-only mode to described root file system subregion;Its In, described root file system subregion includes starting script and system program;And
Application partition carry module, for carrying out carry with read-write mode to described application partition.
8. device as claimed in claim 7, it is characterised in that in described root file system subregion also Backing up including critical applications, described device also includes:
Format manipulation module, for when application partition file system crash, holds described application partition Formatting lines operates;
Replicate and recover module, backup to institute for replicating described critical applications from root file system subregion State application partition.
9. device as claimed in claim 7, it is characterised in that described application partition includes key Application program, described device also includes:
Upgraded module, for upgrading to the critical applications in described application partition.
10. device as claimed in claim 9, it is characterised in that described upgraded module, specifically for The renewable critical applications downloaded is used to cover original crucial application journey in described application partition Sequence, and the critical applications after covering is performed verification operation.
11. devices as claimed in claim 7, it is characterised in that in described root file system subregion also Backing up including critical applications, described device also includes:
Correction verification module, for verifying the critical applications in described application partition, if verification is lost Lose, then from described root file system subregion, replicate described critical applications backup to described application and divide District.
CN201510112437.9A 2015-03-13 2015-03-13 Method and device for processing flash memory partition Pending CN106033362A (en)

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CN107479922A (en) * 2017-08-04 2017-12-15 深圳市中兴物联科技有限公司 A kind of flash data management method, device and computer-readable recording medium
CN107943414A (en) * 2017-10-16 2018-04-20 积成电子股份有限公司 The file partition of built-in Linux and data read-write method
CN108075930A (en) * 2018-01-05 2018-05-25 杭州云备姆科技有限公司 A kind of disaster tolerant backup system based on distributed structure/architecture
CN108833668A (en) * 2018-04-27 2018-11-16 Oppo广东移动通信有限公司 Closedown method and Related product
CN109284232A (en) * 2018-08-30 2019-01-29 大陆汽车投资(上海)有限公司 Prevent the method for flash memory collapse in embedded Linux system
CN110162429A (en) * 2019-05-27 2019-08-23 深圳市网心科技有限公司 System repair, server and storage medium

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Publication number Priority date Publication date Assignee Title
CN107436778A (en) * 2017-03-07 2017-12-05 安徽科微智能科技有限公司 A kind of high reliability upgrade method of unmanned systems
CN107479922A (en) * 2017-08-04 2017-12-15 深圳市中兴物联科技有限公司 A kind of flash data management method, device and computer-readable recording medium
CN107943414A (en) * 2017-10-16 2018-04-20 积成电子股份有限公司 The file partition of built-in Linux and data read-write method
CN107943414B (en) * 2017-10-16 2020-11-17 积成电子股份有限公司 File system partition and data read-write method of embedded Linux
CN108075930A (en) * 2018-01-05 2018-05-25 杭州云备姆科技有限公司 A kind of disaster tolerant backup system based on distributed structure/architecture
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CN109284232A (en) * 2018-08-30 2019-01-29 大陆汽车投资(上海)有限公司 Prevent the method for flash memory collapse in embedded Linux system
CN110162429A (en) * 2019-05-27 2019-08-23 深圳市网心科技有限公司 System repair, server and storage medium
CN110162429B (en) * 2019-05-27 2021-09-24 深圳市网心科技有限公司 System repair method, server and storage medium

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