CN102339244A - System backup and restoration technology based on virtual partition - Google Patents
System backup and restoration technology based on virtual partition Download PDFInfo
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- CN102339244A CN102339244A CN2010102396753A CN201010239675A CN102339244A CN 102339244 A CN102339244 A CN 102339244A CN 2010102396753 A CN2010102396753 A CN 2010102396753A CN 201010239675 A CN201010239675 A CN 201010239675A CN 102339244 A CN102339244 A CN 102339244A
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Abstract
The invention discloses a system backup and restoration technology based on a virtual partition. In the invention, during backup of a system partition, additional partitions and continuous disk space are not needed, so that system backup operation is extremely convenient. In the technology, disk idle sectors are searched from the tail part of a data storage partition which is specified by a user or the tail part of a disk to the front side automatically; in order to prevent individual small partitions on the tail part from being completely occupied, the idle sector occupied by each partition is not more than 80 percent of a partition idle sector according to a principle, clusters corresponding to the sectors are marked as bad clusters, respective sector distribution sheets are established, and backup files are stored, so that the problems of necessity of a second sector for backup and frequently insufficient disk space are solved, and the backup files are difficultly damaged by manual labor or viruses; simultaneously, a disk startup sector is modified, and a restoring system partition is selected before system loading when a system is started.
Description
Technical field:
The present invention relates to backup of a kind of computer disk subregion and recovery technology, especially to the transparent backup and the recovery of operating system.The present invention need not enter system in the time of recovery system, also do not need boot disk, directly before loading system, adds startupoptions, and acquiescence is a start-up system, can select recovery system here.
Background technology:
Existing a lot of about the invention of system backup, characteristics are respectively arranged, but panesthesia not very perfect; Not being that the part operation system version is not supported, is exactly often to point out hard drive space to back up subregion inadequately or not, and when recovering; Some needs boot disk, and some need enter system and select to recover just passable, though some invention is can start through BIOS to recover; But complicated operation, and will on disk, set up and hide subregion, the system partitioning list structure revised.
The present invention has adopted the virtual partition technology first, makes backup and recovery become very convenient and practical.
Summary of the invention:
The present invention adopts a kind of based on the virtual partition standby system, need not other subregion, also need not continuous disk space; Be very easy to system backup operation, the present invention is through from the store data subregion afterbody of user's appointment or search for the disk free sector forward from the disk afterbody automatically, for fear of the indivedual little subregions of afterbody by absorb; Principle is that each subregion utilizes free sector to be no more than 80% of this subregion free sector; These sectors corresponding bunch be labeled as bad bunch, sets up the sector allocation table of oneself, the preservation backup file; So not only thoroughly solved the not enough difficult problem of disk space that backup must have second subregion and often run into; And the file of backup also is not easy by craft or virus damage, revises disk simultaneously and starts the sector, adds startupoptions; In the time of system start-up, selective reduction system partitioning before loading system;
1, system backup process;
Fig. 1 is the system backup process flowchart.
As shown in the figure, beginning standby system subregion (1) detects earlier the system (2) that whether backed up, as just not beginning standby system, otherwise will select whether to continue backup, perhaps withdraws from, will be earlier front Backup Data deletion (4) as continuing backup.
To calculate the size (5) that needs Backup Data when beginning to back up earlier; Select then to backup to specified partition or have system to deposit (6) automatically; Select specified partition to create virtual partition header (7) at the afterbody of this subregion; Begin to search for forward free sector (9) at the subregion afterbody then, the free sector of distributing to virtual partition can not surpass 80% of the current free sector of this subregion, if current subregion free sector not enough (11); Will begin to distribute from the disk afterbody, otherwise just directly backup completion (13).
If begin to distribute virtual partition from the disk afterbody, there are not enough free sector can use (12) at last, then abandon backup, the backup that logs off is like the enough just directly backup completion (13) in space.
2, virtual partition structural information
The virtual partition header structure:
backupasm_boot?struc
Backinfo_mark db ' h11 '; Sign
Backinfo_disk db 80h; Which piece disk
Backuptype db 0; 0 backup 1 is backed up 2 again and is recovered
Backinfo_status db 0; 0 begins operation, and 1 is operating, and 3 deletion actions are accomplished in 2 operations
Boot_startpos dd 0; Virtual partition first sector position
Backinfo_tnums dd 0; The sector number that needs backup
Backinfo_tnums1 dd 0; The sector number that has backed up
Backinfo_t1 dd 0; The evil idea that has backed up bunch marked index sector number
Backinfo_t2 dd 0; The new and old sector index sector number that has backed up
Backinfo_sval dd 0; Back up the successfully time
Backinfo_soupos dd 0; The partition data deposit position that backs up
Backinfo_desitem_type db 0; Deposit the type of virtual partition
Backinfo_desitem_item db 50dup (0); The partitioned file system information
Backinfo_main_offset dw 0; Virtual sectors guiding main code is deposited the place
Backinfo_main_len db 0; Take sector length
Backinfo_mbr_offset dw 0; Original system MBR MBR
Backinfo_mbr_len db 1; Take sector length
Backinfo_newmbr_offset dw 0; New MBR
Backinfo_newmbr_len db 1; Take sector length
Backinfo_backup_offset dw 0; The standby system code is deposited the place
Backinfo_backup_len db 0; Take sector length
Backinfo_restory_offset dw 0; The recovery system code is deposited the place
Backinfo_restory_len db 0; Take sector length
backinfo_pagefile_offset dw?0
backinfo_pagefile_len db?1
backupasm_boot?ends
Except that keeping above structure, also have following information in first sector of virtual partition:
The sector begin chain of virtual partition: the institute that keeps this virtual sectors has living space;
The evil idea that has backed up bunch marked index sector begin chain; Make a sector index chain preservation to all spaces that have been labeled as bad bunch;
The new and old sector index sector begin chain that has backed up: all original sector datas that will back up with newly deposit sector position and make index sector chain and preserve.
3, system reducing step
Start the sector through revising disk in the time of system backup, in the time of system start-up, selective reduction system partitioning before loading system can be accomplished restoring operation.
Claims (2)
1. system backup and reduction technique based on a virtual partition is characterized in that, comprising:
The present invention adopts a kind of based on virtual partition standby system subregion; Need not other subregion, also need not continuous disk space, be very easy to the system backup operation; The present invention is through from the store data subregion afterbody of user's appointment or search for the disk free sector forward from the disk afterbody automatically; By absorb, principle is that each subregion utilizes free sector to be no more than 80% of this subregion free sector for fear of the indivedual little subregions of afterbody, these sectors corresponding bunch be labeled as bad bunch; Set up the sector allocation table of oneself; Preserve backup file, so not only thoroughly solved the not enough difficult problem of disk space that backup must have second subregion and often run into, and the file of backup is not easy also by craft or virus damage.
2. virtual partition as claimed in claim 1 is characterized in that, comprising:
Need not revise disk partition information, just come out a sector branch part idle in one or more subregions, simultaneously corresponding bunch being labeled as badly bunch in this part sector; In this part sector, create the sector allocation table, construct the virtual partition information of oneself, preserve recovery routine and the system backup information of starting; Whole process need not be revised disk partition table information; And virtual partition is other program inaccessibles, avoided the destruction of artificial damage and virus, and is safer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102396753A CN102339244A (en) | 2010-07-29 | 2010-07-29 | System backup and restoration technology based on virtual partition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102396753A CN102339244A (en) | 2010-07-29 | 2010-07-29 | System backup and restoration technology based on virtual partition |
Publications (1)
| Publication Number | Publication Date |
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| CN102339244A true CN102339244A (en) | 2012-02-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN2010102396753A Pending CN102339244A (en) | 2010-07-29 | 2010-07-29 | System backup and restoration technology based on virtual partition |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107436734A (en) * | 2017-07-28 | 2017-12-05 | 郑州云海信息技术有限公司 | The logical partition implementation method and device of a kind of solid-state disk |
| CN113495806A (en) * | 2020-03-20 | 2021-10-12 | 宇龙计算机通信科技(深圳)有限公司 | Method, device, storage medium and terminal for recovering user data |
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| CN1109979C (en) * | 1999-01-12 | 2003-05-28 | 李增胜 | Method for quick protection and recovery for hard disc data of computer |
| CN1831701A (en) * | 2005-03-11 | 2006-09-13 | 北京共创开源软件有限公司 | Operation system protection method based on virtual file system |
| CN1858714A (en) * | 2005-11-07 | 2006-11-08 | 珠海金山软件股份有限公司 | Method for preventing and resolving data from lossing |
| KR20090006928A (en) * | 2007-07-13 | 2009-01-16 | 주식회사 가자아이 | Method for restoration and backup of computer system |
| CN101546295A (en) * | 2008-03-24 | 2009-09-30 | 上海梅山钢铁股份有限公司 | Method for backing up and restoring data based on computer hard disc partitions |
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2010
- 2010-07-29 CN CN2010102396753A patent/CN102339244A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1109979C (en) * | 1999-01-12 | 2003-05-28 | 李增胜 | Method for quick protection and recovery for hard disc data of computer |
| CN1831701A (en) * | 2005-03-11 | 2006-09-13 | 北京共创开源软件有限公司 | Operation system protection method based on virtual file system |
| CN1858714A (en) * | 2005-11-07 | 2006-11-08 | 珠海金山软件股份有限公司 | Method for preventing and resolving data from lossing |
| KR20090006928A (en) * | 2007-07-13 | 2009-01-16 | 주식회사 가자아이 | Method for restoration and backup of computer system |
| CN101546295A (en) * | 2008-03-24 | 2009-09-30 | 上海梅山钢铁股份有限公司 | Method for backing up and restoring data based on computer hard disc partitions |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107436734A (en) * | 2017-07-28 | 2017-12-05 | 郑州云海信息技术有限公司 | The logical partition implementation method and device of a kind of solid-state disk |
| CN113495806A (en) * | 2020-03-20 | 2021-10-12 | 宇龙计算机通信科技(深圳)有限公司 | Method, device, storage medium and terminal for recovering user data |
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Application publication date: 20120201 |