CN100437504C - Hard disc data backup system and method - Google Patents
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- CN100437504C CN100437504C CNB2006100731394A CN200610073139A CN100437504C CN 100437504 C CN100437504 C CN 100437504C CN B2006100731394 A CNB2006100731394 A CN B2006100731394A CN 200610073139 A CN200610073139 A CN 200610073139A CN 100437504 C CN100437504 C CN 100437504C
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Abstract
A method for backing up data of hard disc includes fetching file system of hard disc data into internal memory of computer system before back-up, automatically detecting logic error existed in file system of hard disc data, repairing detected out logic error of file system according in internal memory and backing up hard disc data with correct file system to mirror image file.
Description
Technical field
The present invention relates to a kind of information security technology of computer data, particularly relevant for a kind of system and method for realizing the computer system data backup.
Background technology
In recent years, computing machine since its easily and effectively characteristic and usually be applied to storing, handling some important affairs, in people's daily life and work, be in more and more important position.The major issue that current many computer users faced is exactly because operating system or hard drive are damaged the computer data loss that brings.Enhancing has very important significance to the protection of user data, and therefore, effectively hard disc data backup and recovery also become the focus that the computer user pays close attention to.
There has been at present the multiple backup method that is used to protect computer operation system information; but hard disk data backup method is when the backup file system in the known technology; usually the archives economy that requires to be present on the hard disk is correct, promptly should not comprise any logic error etc. in the archives economy.Otherwise in backup procedure, can cause backup procedure to make mistakes owing to the logic error that archives economy exists and withdraw from.For example the logic error of archives economy may be that the file length of certain archives in attribute record is less than actual file length, therefore the backup method of known technology according to the file length storage allocation in the attribute when depositing actual file data, can cause overflowing of data buffer, and then cause withdrawing from unusually of backup procedure.
Contain at archives economy under the situation of logic error, the measure of generally taking is to use the detection of corresponding archives economy, fix tool that logic error is wherein revised, after all logic error is all eliminated, just can carry out normal hard disc data backup.
Therefore, the backup way of known technology still has many defectives, particularly when not knowing that there is logic error in the archives economy that is backed up in advance, need call special detection fix tool in addition and repair.Usually backup procedure is the step of " back up → make mistakes → detects reparation → back up again ", so backup operation very complicated not only, has also increased the consumption of system resource.In addition, backup procedure is made mistakes and improper withdrawing from can cause accidental destruction to hard disc data.
Summary of the invention
In order to solve problem and the defective in the above-mentioned known technology, the object of the present invention is to provide a kind of hard disc data backup system and method, can in backup procedure, detect and repair the archives economy mistake automatically, utilize to solve existing shortcoming of known technology and limitation.
Hard disc data backup system provided by the present invention, in hard disc data backup to the mirror image archives with computer system, this system includes detection module, repairs module and backup module; In this, detection module system in order to the archives economy that before backup, reads hard disc data to the internal memory of computer system, with the logic error that exists in the archives economy of checking hard disc data; The reparation module is used to repair in the internal memory logic error of archives economy, to obtain correct archives economy; Backup module then in order to the hard disc data backup that will comprise correct archives economy to the mirror image archives.
According to hard disc data backup system of the present invention, wherein detection module more includes former data detection module and archives catalog detection module.Whether former data detection module exists logic error in order to the actual information of the former data of comparison archives economy and the attribute information of former data to detect former data; Whether the archives catalog detection module exists logic error in order to archives or the actual information of catalogue and the attribute information of archives or catalogue of comparison archives economy to detect archives or catalogue.In addition, according to hard disc data backup system of the present invention with above-mentioned feature, wherein repairing module more includes: former data repair module, in order to when the attribute information of the actual information of the former data of archives economy and former data is inconsistent, in internal memory, revise the attribute information of former data; And archives catalog repairs module, in order to when the actual information of the archives of archives economy or catalogue is inconsistent with the attribute information of archives or catalogue, and the attribute information of correction archives or catalogue in internal memory.
In addition, the present invention also provides a kind of hard disk data backup method, comprises following steps:
The archives economy that reads hard disc data is to the internal memory of computer system;
In internal memory, detect the logic error that exists in the archives economy;
In internal memory, repair the logic error of archives economy; And
Backup comprises the hard disc data of the archives economy after the reparation to the mirror image archives.
According to hard disk data backup method of the present invention, in internal memory, detect the step of the logic error that exists in the archives economy and the step of in internal memory, repairing the logic error of archives economy, more include the following step: actual information and its attribute information of the former data of comparison archives economy; Whether the actual information of judging former data is consistent with its attribute information; And, then revise the attribute data data consistent actual of former data with it as if inconsistent.Wherein, in the whether consistent step of the actual information of judging these former data and its attribute information,, more include the following step if when consistent: obtain the partition size and the reference position of former data, and with former data in corresponding recorded information compare; Calculate the bitmap size and the reference position of former data, and with former data in the comparison of corresponding recorded information; Calculate the reference position of the root node of former data, and with former data in the comparison of corresponding recorded information; And other attribute information that calculates former data, and with former data in the comparison of corresponding recorded information.
According to hard disk data backup method of the present invention, in internal memory, detect in the step of the step of the logic error that exists in the archives economy and the logic error of in internal memory, repairing archives economy, more include the following step: the archives of comparison archives economy or actual information and its attribute information of catalogue; Whether the actual information of judging archives or catalogue is consistent with its attribute information; And, then revise the attribute data data consistent actual of archives or catalogue with it as if inconsistent.Wherein compare the archives of archives economy or the actual information of catalogue and the step of its attribute information and more include the following step: the file type of judging archives economy; If file type is common archives, then compare physical length and its attribute length of common archives; And, then compare actual information and its directory attribute information of the archives and the sub-directory number of directory file if file type is a directory file.The present invention has inserted the detection and the repair mechanism of the logic error of archives economy in the process of backup, can in the process of backup, carry out wrong detection and reparation, and along with the process of backup progressively realizes, avoid owing to backup procedure may exist make mistakes and cause backup to be interrupted, and then simplified the operation steps and the process of known redundancy technique, reduced the influence of backup procedure and the consumption of system resource.
In addition, the present invention ties up to the detection of the logic error of archives economy and reparation and finishes in the calculator memory, and then has avoided the accidental destruction to data on the hard disk.
Description of drawings
Fig. 1 is the system block diagrams of hard disc data backup system of the present invention;
Fig. 2 is the flow chart of steps of hard disk data backup method of the present invention;
Fig. 3 and Fig. 4 are detection, reparation and the backup-step process flow diagram of the former data of archives economy;
Fig. 5 is the file or list backup-step process flow diagram of archives economy; And
Fig. 6 and Fig. 7 are the detection and the reparation flow chart of steps of the file or list of archives economy.
Wherein, Reference numeral:
10 hard disc of computer, 20 data backup systems
21 detection modules, 211 former data detection module
212 archives catalog detection modules 22 are repaired module
221 former data repair module 222 archives catalogs are repaired module
23 backup modules, 231 former data backup modules
232 archives catalog backup modules, 30 mirror image archives
Embodiment
Conjunction with figs. is described in detail as follows most preferred embodiment.
Please refer to Fig. 1, represented the system block diagrams of hard disc data backup system of the present invention among the figure, include hard disc of computer 10, data backup system 20 and mirror image archives 30, with the various data backups that will comprise in the hard disc of computer 10 to mirror image archives 30.Wherein as shown in the figure, data backup system 20 includes detection module 21, repairs module 22 and backup module 23.Detection module 21 comprises former data detection module 211 and archives catalog detection module 212 again, repair 22 of modules and comprise former data repair module 221 and archives catalog reparation module 222, and backup module 23 includes former data backup module 231 and archives catalog backup module 232.
In the operating system of backup computer hard disk 10 or various data to the mirror image archives 30, at first map file system on the hard disc of computer 10 is read in the computer system memory, and through detection module 21 of the present invention, promptly former data detection module 211 wherein detects the archives economy on the hard disc of computer 10 in internal memory with archives catalog detection module 212, to judge whether there is logic error in the archives economy.When having logic error, then call reparation module 22 of the present invention, promptly former data repair module 221 wherein and archives catalog reparation module 222 is revised corresponding logic error in internal memory, normally carries out with the backup procedure that guarantees archives economy.Backup module 23 in order to the hard disc data backup that will comprise correct archives economy to mirror image archives 30, thereby break down when causing data to lose in computer system, can see through corresponding recovery operation and carry out data and recover.
Usually, archives economy includes former data and catalogue, file data, and former data mean describes the data of forming the archives economy structure, for example the number of sectors of partition size, each block etc.; Also comprise catalogue and corresponding file data in addition in the archives economy.Therefore, when the backup file system, former data and catalogue, file data need be backed up.But archives economy can cause the appearance of logic error owing to reasons such as computer system sudden power: for example some archives c: windows aa.bin are owing to be interrupted suddenly when write operation, and actual file length is bigger than the length that is recorded in the file attribute; Simultaneously, c: also creating the operation of archives in the windows catalogue, the shelves that name is bb.bin are created, but because operation is interrupted suddenly, causing in the windows directory attribute not, the quantity to archives and sub-directory adds 1 operation.
To describe the corresponding function of former data detection module 211, former data repair module 221, archives catalog detection module 212, archives catalog reparation module 222 and former data backup module 231 and archives catalog backup module 232 below in detail.
By above as can be known, backup module 23 includes former data backup module 231 and archives catalog backup module 232.Former data backup module 231 obtains the position and the size of specified partition according to the archives economy of backup, and obtains the type of archives economy according to the data of subregion assigned address, and then obtains the position and the size of former data.Reading former data to calculator memory, the former data that former data backup module 231 is at first called in 211 pairs of internal memories of former data detection module detect, former data detection module 211 is according to the actual former data message that obtains, for example partition size and reference position, the size of bitmap and reference position, root node reference position and other attribute information etc. are compared with the respective attributes information that wherein writes down, and whether have logic error to detect former data.If inconsistent, then call former data repair module 221 and revise the attribute information that writes down in the former data, to keep consistent with the actual information that obtains or calculate.At last, 231 of former data backup modules can be with revised former data backup to mirror image archives 30.
Archives catalog backup module 232 then according to the super block information of archives economy, obtains the position of root directory, and searches whole archives economy with this as the starting point in backup procedure, and backup searches in backup procedure each archives and catalogue.When backup file and catalogue, archives catalog backup module 232 at first extracts data in the catalogue and directory file to calculator memory, call subsequently archives catalog detection module 212 to the archives or the directory information of its actual acquisition and be recorded in archives or directory attribute in corresponding information compare, wherein whether have inconsistent problem to detect.If inconsistent, then the attribute information of archives catalog reparation module 222 correction archives or catalogue is consistent with actual information, to eliminate the logic error that wherein exists.At this moment, archives catalog backup module 232 is in order to back up to revised archives or directory information in the mirror image archives 30.Certainly, backup module 23 can also be with the data of the type of other except that archives economy in the hard disc of computer or system backup to mirror image archives 30.
Hard disc data backup system of the present invention is in backup procedure, and the archives economy that can at first see through on former data detection module 211 and 212 pairs of hard disc of computer 10 of archives catalog detection module detects.For catalogue that does not have logic error and archives, can after detection, utilize backup module 23 with the data backup of catalogue and archives to mirror image archives 30.The embodiment of the logic error that causes for reasons such as aforementioned calculation machine system sudden power, when backuping to the windows catalogue, for example Shi Ji archives and sub-directory number are 2649, and in the directory attribute of windows, write down be 2648 (this is because after the bb.bin archives are created, in recording the windows directory attribute before sudden power cause).Before to the backup of windows catalogue, at first utilize 212 pairs of windwos catalogues of archives catalog detection module to carry out conformability and detect, and then find above-mentioned this logic error.Therefore, see through archives catalog and repair module 222 this logic error is revised, just the record modification in the windows directory attribute is 2649 after, see through the data of backup module 23 backup windows catalogues again.
Please refer to Fig. 2 below, this figure is the flow chart of steps of hard disk data backup method of the present invention.As shown in the figure, hard disk data backup method of the present invention comprises following steps:
Step S201, the archives economy that at first reads hard disc data is to the internal memory of computer system;
Step S202 detects in the archives economy whether have logic error then in internal memory;
Step S203 if there is logic error, then repairs it;
Step S204, backup at last comprises the hard disc data of the archives economy after the reparation to the mirror image archives.
To be described in detail detection, reparation and the backup-step of archives economy in conjunction with Fig. 3, Fig. 4, Fig. 5, Fig. 6 and Fig. 7 now.
Please refer to Fig. 3 and Fig. 4, be detection, reparation and backup-step process flow diagram at the former data of archives economy.As shown in Figure 3, may further comprise the steps:
Step S301, the position that at first obtains specified partition is with big or small;
Step S302 obtains the type of archives economy according to the data of subregion assigned address;
Step S303 follows the position and the size that obtain former data at the type of archives economy;
Step S304 reads in former data in the calculator memory;
Step S305 obtains former data message from calculator memory;
Step S306, thus actual information can be obtained about the partition size and the reference position of former data, with the corresponding former data attribute information comparison of record;
Step S207, and then judge whether both are consistent;
Step S308, if inconsistent, there is logic error in expression, then advances to step S308, the recorded information of revising in the former data is consistent with the information of acquisition;
Step S309, otherwise, represent correctly about partition size and reference position, then calculate bitmap size and start position information in the former data, and and former data in the attribute information of corresponding record compare.Here symbol A represents the subsequent step of detection, reparation and the backup-step of former data.
In Fig. 4, connect above-mentioned step, comprising:
Step S310 judges whether the size, reference position of bitmap be consistent with the information of record;
Step S311, if inconsistent, it is consistent with the information of calculating then to revise the corresponding informance that writes down in the former data in internal memory;
Step S312, otherwise, then calculate the root node reference position, and and the information of the corresponding record of former data compare;
Step S313 judges then whether both are consistent;
Step S314, if inconsistent, it is consistent with the information of calculating then to revise the corresponding informance that writes down in the former data in internal memory;
Step S315, otherwise, calculate other attribute information in the former data, and compare with its corresponding recorded information;
Step S316, whether consistent to judge above-mentioned information;
If step S317 inconsistent, then advance to step S317 and revises in internal memory, to meet the actual information that calculates;
Step S318, otherwise no any logic error in the former data of expression backup then directly advances to step S318, with the former data backup in the internal memory to the mirror image archives.For the former data that have logic error, then after step S308, step S311, step S314 and the corresponding correction of step S317, back up to again in the mirror image archives.
Fig. 5 is the file or list backup-step process flow diagram of archives economy, in backup procedure, will be that starting point progressively reads whole archives economy with the root directory, and carry out the backup of corresponding archives and catalogue.As shown in the figure, may further comprise the steps:
Step S501 at first reads the super block of archives economy, obtains the position of root directory;
Step S502 extracts data in the root directory and directory file then to calculator memory;
Step S503, and the logic error of archives in the internal memory and catalogue detected and repair;
Step S504, then, correct archives after backup is repaired and catalogue are to the mirror image archives;
Step S505 after root directory is carried out aforesaid operations, enumerates each sub-directory under this catalogue;
Step S506, and judge whether there is sub-directory under this catalogue, if there is not sub-directory, then finish; Otherwise, go to step S502, to the operation of each sub-directory execution in step S502, until searching all archives economy catalogues to step S505.
Below in conjunction with Fig. 6 to Fig. 7 the archives of archives economy or the concrete detection and the reparation step of catalogue are described in detail, Fig. 6 and Fig. 7 are the detection and the reparation flow chart of steps of the file or list of archives economy.
As shown in Figure 6, may further comprise the steps:
Step S601 at first judges file type, to distinguish common archives and directory file;
Step S602, for directory file, the archives and the sub-directory number that then detect its reality and comprised;
Step S603, and above-mentioned actual quantity compared with the quantity in being recorded in directory attribute;
Step S604 judges whether both are consistent;
Step S605 as if inconsistent, then revises the quantity of directory attribute in internal memory, make it consistent with actual quantity;
Otherwise there is not logic error in expression, then finishes.
If be common archives, then forward step S606 to, symbol B represents the subsequent step from step 406 here, comprising:
Step S606 for common archives, then obtains the physical length of archives, and compares with file attribute length;
Step S607 judges whether both are consistent;
Step S608, if inconsistent, it is consistent with physical length then to revise the file length that writes down in the file attribute in internal memory;
Otherwise finish.
Method by this " detection → reparation → backup ", make the system that backups in the mirror image archives no longer comprise any logic error, guaranteed the correctness and the integrality of data in the mirror image archives, and backup procedure can be not again because the logic error of archives economy and accident withdraws from.
Certainly; the present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; being familiar with those of ordinary skill in the art ought can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the present invention.
Claims (8)
1. hard disc data backup system in hard disc data backup to the mirror image archives with a computer system, is characterized in that this system includes:
One detection module, in order to the archives economy that before backup, reads this hard disc data to the internal memory of this computer system, with the logic error that exists in the archives economy of checking this hard disc data;
One repairs module, is used to repair in this internal memory the logic error of this archives economy, to obtain a correct archives economy; And
One backup module, in order to the hard disc data backup that will comprise this correct archives economy to these mirror image archives.
2. hard disc data backup system according to claim 1 is characterized in that, this detection module more includes:
Whether one former data detection module in order to the actual information of the former data of comparing this archives economy and the attribute information of this former data, exists logic error with these former data of detection; And
One archives catalog detection module, whether archives or the actual information of catalogue and the attribute information of this archives or catalogue in order to compare this archives economy exist logic error to detect these archives or catalogue.
3. hard disc data backup system according to claim 1 is characterized in that, this reparation module includes:
One former data repair module, in order to when the actual information of the former data of this archives economy is inconsistent with the attribute information of this former data, the attribute information of these former data of correction in this internal memory; And
One archives catalog is repaired module, in order to when the actual information of the archives of this archives economy or catalogue is inconsistent with the attribute information of this archives or catalogue, and the attribute information of these archives of correction or catalogue in this internal memory.
4. hard disk data backup method, in hard disc data backup to the mirror image archives with a computer system, this method includes the following step:
Step 41, the archives economy that reads this hard disc data is to the internal memory of this computer system;
Step 42 detects the logic error that exists in this archives economy in this internal memory;
Step 43, the logic error of in this internal memory, repairing this archives economy; And
Step 44, backup comprise the hard disc data of this archives economy after the reparation to these mirror image archives.
5. hard disk data backup method according to claim 4 is characterized in that, step 42 more includes the following step with step 43:
Step 51 is compared actual information and its attribute information of the former data of this archives economy;
Step 52 judges whether the actual information of these former data is consistent with its attribute information; And
Step 53 as if inconsistent, is then revised the attribute data data consistent actual with it of these former data.
6. hard disk data backup method according to claim 4 is characterized in that, step 42 more includes the following step with step 43:
Step 61 is compared the archives of this archives economy or actual information and its attribute information of catalogue;
Step 62 judges whether the actual information of these archives or catalogue is consistent with its attribute information; And
Step 63 as if inconsistent, is then revised the attribute data data consistent actual with it of these archives or catalogue.
7. whether consistent hard disk data backup method according to claim 5 is characterized in that, in this actual information of judging these former data and its attribute information step, if when consistent, more include the following step:
Step 71 is obtained the partition size and the reference position of these former data, and with these former data in corresponding recorded information comparison;
Step 72 is calculated the bitmap size and the reference position of these former data, and with these former data in corresponding recorded information comparison;
Step 73 is calculated the reference position of the root node of these former data, and with these former data in corresponding recorded information comparison; And
Step 74 is calculated other attribute informations of this former data, and with these former data in corresponding recorded information comparison.
8. hard disk data backup method according to claim 6 is characterized in that, this is compared the archives of this archives economy or the actual information of catalogue and the step of its attribute information and more includes the following step:
Step 81 is judged the file type of this archives economy;
Step 82 if this file type is common archives, is then compared physical length and its attribute length of these common archives; And
Step 83 if this file type is a directory file, is then compared actual information and its directory attribute information of the archives and the sub-directory number of this directory file.
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| US8201019B2 (en) | 2009-04-28 | 2012-06-12 | International Business Machines Corporation | Data storage device in-situ self test, repair, and recovery |
| JP5409159B2 (en) * | 2009-07-23 | 2014-02-05 | キヤノン株式会社 | Information processing apparatus, information processing apparatus control method, and program |
| CN101833489B (en) * | 2010-05-06 | 2013-04-10 | 北京邮电大学 | Method for file real-time monitoring and intelligent backup |
| CN102880522B (en) * | 2012-09-21 | 2014-12-31 | 中国人民解放军国防科学技术大学 | Hardware fault-oriented method and device for correcting faults in key files of system |
| CN103064759B (en) * | 2012-12-18 | 2016-02-03 | 华为技术有限公司 | The method of data restore and device |
| CN103678517B (en) * | 2013-11-27 | 2017-01-18 | 华为技术有限公司 | Method for fixing logical errors of hard disk and controller |
| CN105893879A (en) * | 2016-03-30 | 2016-08-24 | 苏州美天网络科技有限公司 | Encryption backup method for hard disk data |
| CN108762992B (en) * | 2018-04-20 | 2021-10-08 | 平安科技（深圳）有限公司 | Main/standby switching method and device, computer equipment and storage medium |
| CN115983306B (en) * | 2022-12-09 | 2023-09-15 | 江苏稻源科技集团有限公司 | RFID card writing method with error correction capability |
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