CN102455949A - Backup method - Google Patents
Backup method Download PDFInfo
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- CN102455949A CN102455949A CN2010105229288A CN201010522928A CN102455949A CN 102455949 A CN102455949 A CN 102455949A CN 2010105229288 A CN2010105229288 A CN 2010105229288A CN 201010522928 A CN201010522928 A CN 201010522928A CN 102455949 A CN102455949 A CN 102455949A
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- backup data
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Abstract
The invention discloses a backup method, comprising the following steps of: firstly, acquiring source information from a source disk, and establishing mirror image information, wherein the mirror image information comprises a buffer value; then acquiring multiple data to be backed up from the source disk sequentially according to the magnitude of the buffer value, and establishing multiple continuous backup data blocks sequentially, wherein each backup data block comprises a backup data; and after all data in the source disk is read and established into backup data blocks, combining the data blocks, the source information and the mirror image information into a mirror image file. Therefore, the backup method capable of reducing the size of the mirror image file and improving the backup and restore time is provided by means of the steps.
Description
Technical field
The present invention is meant a kind of backup method that is used to roll up backup especially about a kind of backup method.
Background technology
Independent disk redundancy array (RAID; Redundant Array of Independent Disks); Be referred to as the disk array again, be a kind of polylith independently hard disk (physical hard disk) be combined into a single logic hard disk by different modes, and then provide than the higher memory property of single hard disk with the data backup technology is provided; Wherein, the hard disk array can have multiple volume rank according to the array array mode again.Each rolls up rank is writing down volume on hard disk Organization And Management's information.
In general; To involving in the method for row backup, all need be divided into two steps and back up, a step is that the data on the volume are backed up; Another step then will back up the organization and management information of volume; Therefore, when rolling up backup, not only consuming time but also will understand the definition of different operating system to volume level.
Therefore, how can see through a kind of method or means, when rolling up backup, not need the organizational information and the management information of extra duplicate volume, be the target that relevant at present manufacturer makes great efforts exploitation.
Summary of the invention
For simplify current volume back up in when backup complex steps complicated and reach above-mentioned target, the present invention provides a kind of backup method can the direct back-up of total data of the volume of desire backup be saved an operating system and other judgement of volume level.
Backup method of the present invention earlier comes source disk to obtain a source-information from one, and sets up a Mirror Info; Wherein, this Mirror Info comprises a buffer value, then; Come source disk to obtain many from this in regular turn according to the size of this buffer value and desire Backup Data; And set up many continuous Backup Data pieces in regular turn, wherein, respectively this Backup Data piece comprises a Backup Data.All data are all passed through to read and are created as after the Backup Data piece in coming source disk, and those data blocks, this source-information and this Mirror Info are combined into an image file.
Therefore; By above-mentioned method, the present invention can not be directed against the operating system of source disk or volume level to do processing when the volume backup; Just the direct source disk reading of data file that establishes mirror image always; So backup speed can be higher than the backup method of general existing volume, in addition, each Backup Data piece of the present invention is stored in the image file continuously; Therefore difference was rolled up the backup image file in the past and need be had the discrete data header file (header) of sensing, and this measure can reduce the size of image file and the time of improving backup-and-restore.
About characteristic of the present invention, the real work and effect, conjunction with figs. is made most preferred embodiment and is specified as follows.
Description of drawings
Fig. 1 is a backup method process flow diagram of the present invention;
Fig. 2 is an image file form synoptic diagram of the present invention;
Fig. 3 is the thin portion process flow diagram of step S12 among Fig. 1.
Wherein, Reference numeral:
20 source-informations
201 system types
202 source total amount of data
21 Mirror Infos
211 buffer values
212 mirror image data amounts
213 first off-set values
22 Backup Data pieces
221 Cyclical Redundancy Check sign indicating numbers
222 compression flag sign indicating numbers
223 second off-set values
224 Backup Data districts
Embodiment
Please refer to Fig. 1 and shown in Figure 2, Fig. 1 is a backup method process flow diagram of the present invention, and Fig. 2 is an image file form synoptic diagram of the present invention.Backup method comprises:
Step S10: come source disk to obtain a source-information from one;
Step S11: set up a Mirror Info;
Step S12: come source disk to obtain many from this in regular turn according to the size of a buffer value and desire Backup Data, and set up many continuous Backup Data pieces in regular turn, wherein, respectively this Backup Data piece comprises a Backup Data; And
Step S13: set up an image file, wherein, this image file comprises this source-information, this Mirror Info and those many Backup Data pieces.
Wherein, like the described source-information 20 of step S10, comprise a system type 201 and a source total amount of data 202; System type 201 is meant when rolling up back-up; Come the type of the operating system of source disk, 202 of the total amount of data in source are come in the source disk, need the size of the volume of backup.
Wherein, like the described Mirror Info 21 of step S11, comprise this buffer value 211, a mirror image data amount 212 and one first off-set value 213; Buffer value 211 is a preset numerical value, and visual user's demand is adjusted, and buffer value 211 defaults in 4 megabyte (Mega-Byte according to present embodiment; MB); Yet this is the usefulness of illustration, is not to be used to limit any technical characterictic of the present invention.212 of mirror image data amounts are the size of data that is used to represent image file, and first off-set value is then represented the side-play amount (offset) of the Backup Data piece that the first stroke is established.
Wherein, like the described Backup Data piece 22 of step S11, comprise a Cyclical Redundancy Check (CyclicRedundancy Check; CRC) sign indicating number 221, one compression flag sign indicating number 222 and one second off-set value 223 and a Backup Data district 224; This Backup Data district 224 stores Backup Data, and this compression flag sign indicating number 222 is preset as " 0 " and represents Backup Data without overcompression Chu Li, otherwise; When Backup Data is that this compression flag sign indicating number 222 just can be updated to " 1 " after the data that overcompression is handled.
Please refer to Fig. 1 to shown in Figure 3, Fig. 1 is a backup method process flow diagram of the present invention, and Fig. 2 is an image file form synoptic diagram of the present invention, and Fig. 3 is the thin portion process flow diagram of step S12 among Fig. 1.Comprise following substep among the step S12:
Step S30: respectively this desire Backup Data that will obtain, carry out a discrete test procedure in regular turn;
Step S31: judge the dispersion degree height that respectively should desire Backup Data;
Step S32: when dispersion degree is high; Should desire Backup Data and save as this Backup Data piece, wherein, respectively this Backup Data piece comprises a Cyclical Redundancy Check (Cyclic Redundancy Check in addition; CRC) sign indicating number and a compression flag sign indicating number, this compression flag sign indicating number is preset as 0;
Step S33: when dispersion degree is low, should desires Backup Data and compress; And
Step S34: the desire Backup Data that will be somebody's turn to do through compression saves as this Backup Data piece, and to upgrade this compression flag sign indicating number be 1.
Wherein, The described judgement of step S31 respectively should be desired the dispersion degree height of Backup Data; The method that its dispersion degree is judged can see through the discrete Fourier transfer algorithm; Yet the those skilled in the art that is judged as that the discrete Fourier transfer algorithm carries out the data discrete degree knows, does not state so do not tire out.
In sum; The present invention is when the volume backup; Can not be directed against the operating system or the volume level of source disk to do processing; Only can write down the size of rolling up in the source disk and the OS Type of volume, the just direct source disk reading of data file that establishes mirror image always afterwards is so backup speed can be higher than the backup method of general existing volume.
In addition; Each Backup Data piece of the present invention is stored in the image file continuously; Difference was rolled up the backup image file in the past need have the discrete data header file (header) of sensing, and this measure can reduce the size of image file and the time of improving backup-and-restore, moreover; The compression of Backup Data is carried out in the calculating that sees through dispersion degree, has also dwindled the size of image file.
Though embodiments of the invention openly as stated; But be not in order to limit the present invention; Any those skilled in the art; Do not breaking away from the spirit and scope of the present invention, such as according to the described shape of application protection domain of the present invention, structure, characteristic and spirit when doing a little change, therefore scope of patent protection of the present invention must be looked the scope that this instructions appending claims defined and is as the criterion.
Claims (5)
1. a backup method is characterized in that, comprises step:
Come source disk to obtain a source-information from one;
Set up a Mirror Info, this Mirror Info comprises a buffer value;
Come source disk to obtain many from this in regular turn according to the size of this buffer value and desire Backup Data, and set up many continuous Backup Data pieces in regular turn, wherein, respectively this Backup Data piece comprises a Backup Data; And
Set up an image file, wherein, this image file comprises this source-information, this Mirror Info and those many Backup Data pieces.
2. backup method as claimed in claim 1 is characterized in that, this size according to this buffer value comes source disk to obtain many desire Backup Datas from this in regular turn, and sets up the step of many continuous Backup Data pieces in regular turn, further comprises step:
With respectively this desire Backup Data of obtaining, carry out a discrete test procedure in regular turn;
Judge the dispersion degree height that respectively should desire Backup Data;
When dispersion degree is high, should desire Backup Data and save as this Backup Data piece, wherein, respectively this Backup Data piece comprises a Cyclical Redundancy Check sign indicating number and a compression flag sign indicating number in addition, this compression flag sign indicating number is preset as 0;
When dispersion degree is low, should desires Backup Data and compress; And
This desire Backup Data through compression is saved as this Backup Data piece, and to upgrade this compression flag sign indicating number be 1.
3. backup method as claimed in claim 2 is characterized in that, this discrete test procedure uses a discrete Fourier transfer algorithm.
4. backup method as claimed in claim 1 is characterized in that, this source-information comprises a system type and the source total amount of data that this comes source disk.
5. backup method as claimed in claim 1; It is characterized in that; This Mirror Info comprises one first off-set value; Respectively this Backup Data piece also comprises one second off-set value, and this first off-set value is the side-play amount of this Backup Data piece of being established of this first stroke, and this second off-set value is the side-play amount of last pen to this Backup Data piece of next record.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010522928 CN102455949B (en) | 2010-10-20 | 2010-10-20 | Backup method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010522928 CN102455949B (en) | 2010-10-20 | 2010-10-20 | Backup method |
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| CN102455949A true CN102455949A (en) | 2012-05-16 |
| CN102455949B CN102455949B (en) | 2013-10-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201010522928 Active CN102455949B (en) | 2010-10-20 | 2010-10-20 | Backup method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103995863A (en) * | 2014-05-19 | 2014-08-20 | 华为技术有限公司 | Method and device for deleting repeating data |
Citations (5)
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|---|---|---|---|---|
| US5596708A (en) * | 1994-04-04 | 1997-01-21 | At&T Global Information Solutions Company | Method and apparatus for the protection of write data in a disk array |
| CN101118506A (en) * | 2006-07-31 | 2008-02-06 | 英业达股份有限公司 | Backup and recovery method of file system |
| CN101408855A (en) * | 2008-11-07 | 2009-04-15 | 北京威视数据系统有限公司 | Method for protecting remote backup equipment of temporary abnormal by continuous data protective system |
| CN101441638A (en) * | 2007-11-21 | 2009-05-27 | 英业达股份有限公司 | Data structure of mapping file |
| JP2010028451A (en) * | 2008-07-18 | 2010-02-04 | Nikon Corp | Digital camera and program for controlling the same |
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2010
- 2010-10-20 CN CN 201010522928 patent/CN102455949B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5596708A (en) * | 1994-04-04 | 1997-01-21 | At&T Global Information Solutions Company | Method and apparatus for the protection of write data in a disk array |
| CN101118506A (en) * | 2006-07-31 | 2008-02-06 | 英业达股份有限公司 | Backup and recovery method of file system |
| CN101441638A (en) * | 2007-11-21 | 2009-05-27 | 英业达股份有限公司 | Data structure of mapping file |
| JP2010028451A (en) * | 2008-07-18 | 2010-02-04 | Nikon Corp | Digital camera and program for controlling the same |
| CN101408855A (en) * | 2008-11-07 | 2009-04-15 | 北京威视数据系统有限公司 | Method for protecting remote backup equipment of temporary abnormal by continuous data protective system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103995863A (en) * | 2014-05-19 | 2014-08-20 | 华为技术有限公司 | Method and device for deleting repeating data |
| CN103995863B (en) * | 2014-05-19 | 2018-06-19 | 华为技术有限公司 | A kind of method and device of data de-duplication |
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| Publication number | Publication date |
|---|---|
| CN102455949B (en) | 2013-10-02 |
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Owner name: I VALLEY HOLDINGS CO., LTD. Free format text: FORMER OWNER: YINGYEDA CO., LTD., TAIWAN Effective date: 20150721 |
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Effective date of registration: 20150721 Address after: Cayman Islands, George Town Patentee after: IValley Holding Co., Ltd. Address before: Taipei City, Taiwan, China Patentee before: Inventec Corporation |