CN101051285A - File matching method in computer network data backup - Google Patents
File matching method in computer network data backup Download PDFInfo
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- CN101051285A CN101051285A CN 200610116303 CN200610116303A CN101051285A CN 101051285 A CN101051285 A CN 101051285A CN 200610116303 CN200610116303 CN 200610116303 CN 200610116303 A CN200610116303 A CN 200610116303A CN 101051285 A CN101051285 A CN 101051285A
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Abstract
A method for matching file in data back-up of computer net work includes carrying out differential back-up and completer back-up as per back-up interval time selected by user after first time of completer back-up is carried out, synthesizing this time of increment back-up sent locally and last time of differential back-up to be remote differential back-up and enabling to carry out remote differential back-up by only requiring small transmission increment back-up of network band width.
Description
Technical field
What the present invention relates to is a kind of method that is used for network information technology field, the method for file coupling in specifically a kind of computer network data backup.
Background technology
Data backup is a kind of crucial data security strategy, by backup software data are backuped on tape unit or the miscellaneous equipment, raw data lose or situation about being destroyed under, utilize Backup Data that raw data is recovered out, make the system can operate as normal.From backup scenario, mainly contain these three kinds of backup fully, incremental backup and differential backups, generally all be used in combination.In data backup, the coupling that how to keep backing up original and backup file plays crucial effects in the process of whole backup.
File coupling in the data backup is meant that need backup file (to call original in the following text) is set up one with backup file to be connected, and can find the pairing original of backup accurately in the needs backup or when upgrading backup, obtains relevant information and backs up.
Find through literature search prior art, Chinese patent (application) number is the patent of 01823593.X computer hard disk data backup by name and restoration methods, its backup-step is: in this hard disk, for there being the mirrored partition that the backup subregion that needs Backup Data is provided for backing up the data of this subregion in this hard disk; With the data integrity of the backup subregion of user's appointment backup in the mirrored partition of the correspondence that has been provided with; Hide the space of mirrored partition.This patent mainly is to back up and recover underaction at a certain subregion.Also find in the retrieval, patent (application) number is the patent of the 03135150.6 file mirror method based on Internet by name, it is characterized in that when the file to home server carries out write operation, note filename, file path, document misregistration and write data, send to the Remote Switched Port Analyzer server by Internet then, on the Remote Switched Port Analyzer server, corresponding file is carried out same write operation, reach the purpose of mirror image.In case but change has taken place filename, change has taken place in file path, and this mirror method just returns and lost efficacy.
Summary of the invention
The present invention is directed to the deficiencies in the prior art and defective, the method of file coupling in a kind of computer network data backup is provided, make the coupling that can be good at reaching backup original and backup file based on backup software of the present invention, particularly after the modification in the rename that file has taken place when file, path, still can keep backing up the coupling of original and backup file.
The present invention is achieved by the following technical solutions:
The present invention is based on the file matching method of NTFS disk system structure, backup mode adopts the backup carry out first selecting according to the user after the full backup to carry out difference backup and full backup interval time, long-range difference backup is to be synthesized by this this locality biography incremental backup and backup of the difference of the last time in the past, only need less network bandwidth transmission incremental backup can carry out the remote differential backup, process is as follows:
1) safeguards a backup file tabulation that dynamically updates, set up coupling and connect.Being each needs backup file to create a record in this tabulation, not only write down some information relevant here with backup file, also to number set up a link and follow the tracks of the later locating information of this document, and create corresponding journal file according to the object ID of file to file;
2) when the file in the backup file tabulation takes place to change, connect coupling and upgrade, fetch the locating information of following the tracks of the backup original according to the chain of being set up, adopt full backup as the case may be or carry out the difference backup, generate increment information simultaneously;
3) obtain system's current state with the association attributes of, file and necessity record of certain operations is generated log record add in the daily record;
4) can select that crucial Backup Data is carried out bottom by the user and hide, to reach data storage safety;
5) long-rangely full backup or incremental backup are passed to the remote backup main frame, in the process of transmission, can carry out cryptographic operation to reach data transmission security to data according to user's selection by network;
6) after transmission is finished data are carried out the matching checking to guarantee data integrity and consistance.
Setting up coupling connects
1) after the user has selected to want the backup area of backup file, backup parameter and backup file, obtains the object ID of this document;
2) will need backup file to backup to the backup area of appointment and lock;
3) in backup list, create a record for this document, in record, write down the object ID of this document, should comprise at least in the record that need back up the backup parameter of creation-time, file type, backup path name and some necessity of the filename of file, pathname, file (as the interval time of backup, the final updating time of backup, the mode of backup) etc.;
4) create a backup log file for this document, generate a backup log record, this record comprises that at least current system state, file attribute, file type and some are to the record that backs up influential operation (as the operation of renaming, change path operations etc.).
Coupling is upgraded
1) creates a process and constantly scan the backup file tabulation
2) this process constantly reads every duplicated record of backup file tabulation, judges whether record need upgrade, and relatively backs up the extent of interval time and current time and the last BACKUP TIME, judges whether and will back up.
3) if backup interval time poor greater than current time and the last BACKUP TIME, then skip current record and carry out the analysis that next bar writes down.If backup is less than or equal to the poor of current time and the last BACKUP TIME interval time, then to once back up.
4), in the backup file tabulation, obtain the object ID of this document, the current file name and the path that obtain file by object ID if will back up.
5) relatively whether current file name and file path mate with filename and file path in the record, if coupling then backs up also in the amendment record item accordingly according to the backup parameter of record in the record, write a log record in log record.
6) if the 5th step comparative result does not match or finds that file does not exist, then there are following three kinds of situations in explanation:
A) file is renamed
B) change has taken place in file path
C) file is deleted
7) for a), b) two kinds of situations are revised as current filename and file path with filename and file path in the record.If file not found, then explanation backup original is deleted by the user.The original of prompting user ID is deleted, provide the user to select whether to need to keep this backup, need not upgrade or in backup list, delete the record of correspondence according to this record of selection marker of user, in the backup log file of correspondence, write a daily record that file is deleted.
8) relatively back up original and backup file, take mutually deserved backup mode to back up.
The invention has the beneficial effects as follows, no matter the user has carried out the rename or the modification in path or deletion backup original file system to the backup original can both detect these situations, realize file coupling completely, rather than abandon backup to these files, further guarantee the intact of user data.
The present invention is for the file coupling characteristics of data backup: utilize the object ID of file rather than resolve reading and writing of files through the path, accelerated file access speed; Support the user that the file path operation is renamed, changed to the backup original; Not only support file path that the file coupling after changing that the road is advanced has taken place on local host, and support the file coupling under the situation that the backup original moves in the NTFS of network domains volume.
Description of drawings
Fig. 1 connects process flow diagram for the present invention sets up coupling
Fig. 2 mates the renewal process flow diagram for the present invention
Embodiment
In new technology file system, file is by MFT (MFT, Master File Table) is a most important file under the new technology file system, it is writing down the situation of All Files and catalogue, be similar to the function of the FAT+FDT under the FAT file system, and storing the file attribute more much more than FAT+FDT.Each file on the NTFS volume all has a 64bit to be called the unique identification of file include number (File Reference Number).File include number is made up of two parts: the one, and document number, the 2nd, file sequence number, document number are 48, corresponding to the position of this document in MFT.The object ID (GUID) of one 16 byte all assigned in each file or MFT record in windows, and the algorithm that GUID length and windows generate GUID can guarantee that each GUID is unique.Have among the MFT one $Extend $Objid meta file De $O index, it sorts according to GUID, is the index of object ID, can find the object ID attribute of file in this index, index provides data that turn back to file by the MFT reference signs.Utilize object ID to realize that the coupling that backs up original and backup file can further guarantee the intact of data.
Described in the step such as summary of the invention of the file coupling in the data backup of the present invention.For example the user as want backup file D: dir1 dir2 filename, at first set up a coupling and connect, as shown in Figure 1:
1) being this document adds a record in the file backup tabulation, note the object ID number of this document in this record.
2) lock for this backup file with the backup area of file backup, and at backup area to appointment.
3) generate daily record, backup messages is passed to remote back-up server.
4), be transferred to long-range to file encryption.
In the process of scanning backup file tabulation, upgrade this coupling, as shown in Figure 2:
1) if find that this document need regenerate backup, then searches this document according to the object ID of this document.
2) if find this document, read the current file name aaa of file, and the path X: dirm dirn ...; Compare with filename and path in the record, if different, the filename in then will write down replaces with aaa, with in writing down-5-guard replace X: dirm dirn ....
3) if can not find this document, then selecting to delete or keep the record of this document in backup list according to the user, this record is not then deleted in this backup and indicate that in record this record need not upgrade if the user selects to keep, if the user selects to delete this backup then with this record deletion.
4), then in log record, write down this incident if the modification of filename or pathname or the deletion of file have taken place.
5) back up according to concrete condition.
Claims (3)
1, the method for file coupling in a kind of computer network data backup, it is characterized in that, be based on the file matching method of NTFS disk system structure, backup mode adopts the backup carry out first selecting according to the user after the full backup to carry out difference backup and full backup interval time, long-range difference backup is to be synthesized by this this locality biography incremental backup and backup of the difference of the last time in the past, and detailed process is as follows:
1) safeguards a backup file tabulation that dynamically updates, setting up coupling connects, being each needs backup file to build a record in this tabulation, not only write down some information relevant here with backup file, also to number set up a link and follow the tracks of the later locating information of this document, and create corresponding journal file according to the object ID of file to file;
2) when the file in the backup file tabulation takes place to change, mate renewal, follow the tracks of the locating information that backs up original, adopt full backup as the case may be or carry out the difference backup, generate increment information simultaneously according to the link of being set up;
3) obtain system's current state with the association attributes of, file and necessity record of certain operations is generated log record add in the daily record;
4) select that by the user crucial Backup Data is carried out bottom and hide, to reach data storage safety;
5) long-rangely full backup or incremental backup are passed to the remote backup main frame, in the process of transmission, data are carried out cryptographic operation to reach data transmission security according to user's selection by network;
6) after transmission is finished data are carried out the matching checking to guarantee data integrity and consistance.
2, the method for file coupling in the computer network data backup according to claim 2, it is as follows to set up the coupling Connection Step:
1) after the user has selected to want the backup area of backup file, backup parameter and backup file, obtains the object ID of this document;
2) will need backup file to backup to the backup area of appointment;
3) in backup list, create a record for this document, in record, write down the object ID of this document, should comprise at least in the record that need back up the backup parameter of creation-time, file type, backup path name and some necessity of the filename of file, pathname, file;
4) create a backup log file for this document, generate a backup log record, this record comprises current system state, file attribute, file type at least and some are to backing up the record of influential operation.
3, the method for file coupling in the computer network data backup according to claim 2, the coupling step of updating is as follows:
1) creates a process and constantly scan the backup file tabulation;
2) this process constantly reads every duplicated record of backup file tabulation, judges whether record need upgrade, and the extent that relatively backs up interval time and current time and the last BACKUP TIME judges whether and will back up;
3) if backup interval time poor greater than current time and the last BACKUP TIME, then skip the analysis that next bar record is carried out in current record, be less than or equal to the poor of current time and the last BACKUP TIME interval time if back up, then to once back up;
4), in the backup file tabulation, obtain the object ID of this document, the current file name and the path that obtain file by object ID if will back up;
5) relatively whether current file name and file path mate with filename and file path in the record, if coupling then backs up also in the amendment record item accordingly according to the backup parameter of record in the record, write a log record in log record;
6) if the 5th) the step comparative result do not match or finds that file does not exist, and then there are following three kinds of situations in explanation: file is renamed; Change has taken place in file path; File is deleted;
7) renamed for file and two kinds of situations have taken place to change file path, filename and file path in the record are revised as current filename and file path, if file not found, then explanation backup original is deleted by the user; The original of prompting user ID is deleted, provide the user to select whether to need to keep this backup, need not upgrade or in backup list, delete the record of correspondence according to this record of selection marker of user, in the backup log file of correspondence, write a daily record that file is deleted;
8) relatively backing up original takes mutually deserved backup mode to back up with backup file.
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| CN 200610116303 CN101051285A (en) | 2006-09-21 | 2006-09-21 | File matching method in computer network data backup |
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| CN 200610116303 CN101051285A (en) | 2006-09-21 | 2006-09-21 | File matching method in computer network data backup |
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| CN101872406A (en) * | 2010-04-29 | 2010-10-27 | 李贵林 | Computer file tracking method |
| CN102236586A (en) * | 2010-04-21 | 2011-11-09 | 雷州 | Local and network multiple incremental data backup and recovery method of computer |
| CN101853194B (en) * | 2009-04-03 | 2011-12-14 | 纬创资通股份有限公司 | Data backup method |
| CN102354293A (en) * | 2011-09-16 | 2012-02-15 | 浪潮(北京)电子信息产业有限公司 | File differential backup system and method |
| CN102508740A (en) * | 2011-10-26 | 2012-06-20 | 上海文广互动电视有限公司 | Remote replication method of file system |
| CN101453490B (en) * | 2008-12-23 | 2012-12-19 | 上海爱数软件有限公司 | Synthesized data backup method and apparatus |
| CN103176867A (en) * | 2013-04-02 | 2013-06-26 | 浪潮电子信息产业股份有限公司 | Fast file differential backup method |
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| CN112882866B (en) * | 2021-02-24 | 2023-12-15 | 上海泰宇信息技术股份有限公司 | Backup method suitable for mass files |
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