CN103778033A - Method and device for backing up Unix-like operating system at multiple time points - Google Patents
Method and device for backing up Unix-like operating system at multiple time points Download PDFInfo
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Abstract
The invention discloses a method and a device for backing up a Unix-like operating system at multiple time points. The method comprises the following steps of packing increment files into a plurality of increment image files corresponding to different time points according to time sequence; when the Unix-like operating system is started, performing merged running on a basic image file and one or more increment image files in the increment image files according to time sequence to establish new increment files. By the method and the device, different backups can be selected for running the operating system according to different time points, the modification made by the system can be saved, the backup and recovery at multiple state points can be implemented according to time, bidirectional recovery can be realized, and the system can be recovered to a front time point, and can also be recovered from the front time point to a back time point.
Description
Technical field
The present invention relates to class Unix operation system technology field, relate in particular to method and the device of the many time point backups of a kind of class Unix operating system starting based on image file.
Background technology
Image file, also referred to as image file (image), the file that data and program are combined into, it in the future source material after format conversion, on hard disk, be saved as and the duplicate file of object CD content, this file can be carved in CD in the mode of one to one correspondence.For example, image file is the complete copy file on CD, comprises all information of CD, needs special virtual drive software, be written into this kind of image file, read, simulated the characteristic that reads optical file completely, for example, the software of this respect has Alcohol, Deam Tools etc.Making data reforming and the disk scanning of first making hard disk before image file, because the sizableness of an image file is in the full content that is carved into CD, the reserved hard drive space that exceedes this capacity is stored this image file.
Set up image file and can improve the successful probability of imprinting, because the process of imprinting data comprises file reading, format transformation and actually the stage such as write all can cause imprinting failure as long as a stage goes wrong.Make image file and can carry out easily same data massive duplication, can save the repetition time of the mode of much writing direct; In addition, while setting up image file and carry out imprinting, can not produce the file of many low capacities.
At present, image file main application is the mounting disc as operating system.But, the operating system of booting image file start can be modified in the time of operation, but after exiting, system do not preserve the content of modification, make user in the time of the upper operating system that once uses image file startup, can lose the modification of doing above, and in the time of operational system, user can not select backup-and-restore system by time point.
Summary of the invention
In view of this, the technical matters that the present invention will solve is to provide the method for the many time point backups of a kind of class Unix operating system starting based on image file, can select different backup operation systems according to time point.
A method for the many time point backups of class Unix operating system that start based on image file, comprising: delta file is packaged as to the multiple increment image files corresponding to different time points according to time sequencing; Wherein, in the time of class Unix operating system, will the modification of described class Unix operating system be kept in described delta file; Starting when described class Unix operating system, by the one or more increment image files in basic image file and described multiple increment image file, merge operation by the order of time, create new delta file.
According to one embodiment of the method for the invention, further, set up overall image queue; According to time sequencing, multiple increment image files are inserted in overall image queue; Determine recovery time point, read described overall image queue, copy recovery time point increment image file before; Revise boot configuration file, the increment image file before basic image file and recovery time point is merged by the order of time, by calling union file system interface, and create new delta file.
According to one embodiment of the method for the invention, further, be packaged as the read-only basic image file of multiple and described class Unix operating system with the increment image file of form according to different delta files according to time sequencing; Wherein, creating after increment image file, by increment image file is corresponding therewith delta file backup revised file name; Wherein, the form of basic image file comprises: standard ISO 9660 forms.
According to one embodiment of the method for the invention, further, in the time that kernel starts, start demons; In the time of class Unix operating system, call described demons user is kept in delta file the modification of described class Unix operating system; If described delta file does not exist, call the newly-built delta file of described demons; Described delta file is stored in identical memory device with image file.
According to one embodiment of the method for the invention, further, described memory device comprises: host hard drive, portable hard drive, USB flash disk, flash memory or SSD; In the time that memory device is USB flash disk or flash memory, start class Unix operating system by the USB interface of main frame.
According to one embodiment of the method for the invention, further, the class Unix operating system that described class Unix operating system is LiveX form, comprising: the class Unix operating system of LiveCD form, the class Unix operating system of LiveUSB form; Wherein, described class Unix operating system comprises: (SuSE) Linux OS.
The technical matters that the present invention will solve is to provide the device of the many time point backups of a kind of class Unix operating system starting based on image file, can select different backup operation systems according to time point.
A device for the many time point backups of class Unix operating system that start based on image file, comprising: increment image file generation module, for delta file is packaged as to the multiple increment image files corresponding to different time points according to time sequencing; Wherein, in the time of class Unix operating system, will the modification of described class Unix operating system be kept in described delta file; Restoring system backup operation module, in the time starting described class Unix operating system, by the one or more increment image files in basic image file and described multiple increment image file, merge operation by the order of time, creates new delta file.
According to device of the present invention embodiment, further, described increment image file generation module is set up overall image queue, according to time sequencing, described multiple increment image files is inserted in overall image queue; Described restoring system backup operation module is determined recovery time point, reads described overall image queue, copies recovery time point increment image file before; Described restoring system backup operation module is revised boot configuration file, the increment image file before basic image file and recovery time point is merged by the order of time, by calling union file system interface, and create new delta file.
According to device of the present invention embodiment, further, described increment image file generation module is packaged as the read-only basic image file of multiple and described class Unix operating system with the increment image file of form according to different delta files according to time sequencing; Wherein, creating after increment image file, described increment image file generation module is by increment image file is corresponding therewith delta file backup revised file name; Wherein, the form of basic image file comprises: standard ISO 9660 forms.
According to device of the present invention embodiment, further, in the time that kernel starts, described restoring system backup operation module starts demons; In the time of class Unix operating system, call described demons user is kept in delta file the modification of described class Unix operating system; If described delta file does not exist, described increment image file generation module calls the newly-built delta file of described demons; Described delta file is stored in identical memory device with image file.
Method and the device of the many time point backups of the class Unix operating system starting based on image file of the present invention, can select different backup operation systems according to different time points, the modification of not only can saved system doing, and provide the new mode of one of operating system backup and restore, can realize by the time backup and restore of multiple state points, and can realize two-way reduction, and make system can revert to front time point, also can revert to rear time point by front time point.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the process flow diagram of an embodiment of the method for the many time point backups of the class Unix operating system starting based on image file according to the present invention;
Fig. 2 is the process flow diagram of another embodiment of the method for the many time point backups of the class Unix operating system starting based on image file according to the present invention;
Fig. 3 is the schematic diagram of an embodiment of the device of the many time point backups of the class Unix operating system starting based on image file according to the present invention.
Embodiment
With reference to the accompanying drawings the present invention is described more fully, exemplary embodiment of the present invention is wherein described.Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Based on the embodiment in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
Class Unix system (Unix-like) refers to various traditional Unix systems, such as the Solaris of FreeBSD, OpenBSD, SUN company, and the similar system of various and traditional Unix, such as Minix, Linux, QNX etc., all considerably inherit the characteristic of original UNIX, there are many resemblances, and all observe to a certain extent POSIX standard.
Fig. 1 is the process flow diagram of an embodiment of the method for the many time point backups of the class Unix operating system starting based on image file according to the present invention.As shown in Figure 1:
Wherein, basic image file is the image file of the initial startup class Unix operating system using, and user did not carry out modification.
According to one embodiment of present invention, set up overall image queue.According to time sequencing, multiple increment image files are inserted in overall image queue; Determine recovery time point, read overall image queue, copy recovery time point increment image file before.
Revise boot configuration file, the increment image file before basic image file and recovery time point is merged by the order of time, by calling union file system interface, and create new delta file.
Union file system (Unionfs) is the union file system of a stacking-type, multiple catalogues (also crying branch) content can be combined, and the physical location of catalogue to be .Unionfs separately allow read-only and read-write catalogue depositing can delete and increase content in other words simultaneously.
The place of Unionfs application is a lot, such as merge the master catalogue of different file in multiple disk partition, or several CD CDs is merged into a unified CD-disc catalogs (filing).In addition, having copy-on-write (copy-on-write) function Unionfs can combine read-only and read-write file system, the modification of virtual upper permission read-only file system can be saved in can written document system in the middle of.In class Unix operating system, generally all there is union file system interface.
The method of the many time point backups of the class Unix operating system starting based on image file of the present invention, backup is that delta file is packaged into and the increment image file of the read-only reflection of operating system with form, and the file of delta file or placement delta file renames or deletes after packing.Can, according to different time points or different states, generate different increment image files, in the time starting, one or more image files be merged with basic image file successively, and create new single can written document folder with aforementioned merging after root again merge.Reduction refers to the file of empty or rename delta file or placement delta file, makes system get back to the incremental backup state that this file is corresponding.
Method of the present invention provides the one of operating system backup and restore new mode, can realize by the time backup and restore of multiple state points, and reduction can be two-way, and system reducing, to front time point, also can revert to rear time point by front time point.
According to one embodiment of present invention, be packaged as the read-only basic image file of multiple and class Unix operating system with the increment image file of form according to different delta files according to time sequencing.Wherein, creating after increment image file, by increment image file is corresponding therewith delta file backup revised file name.Wherein, the form of basic image file comprises: standard ISO 9660 forms.
According to one embodiment of present invention, in the time that kernel starts, start demons.In the time of class Unix operating system, call demons user is kept in delta file the modification of class Unix operating system.
If delta file does not exist, call the newly-built delta file of demons.Delta file is stored in identical memory device with image file, also can be in different memory devices.Demons obtain the catalogue of image file storage medium institute carry, find delta file.
According to one embodiment of present invention, in the time starting the operating system, by calling union file system interface by basic image file and increment image file, combine with delta file, by some up-to-date configurations of selective system, the operating system of a synthetic required operation, can move and retain the class Unix operating system of revising.
According to one embodiment of present invention, in the time starting class Unix operating system, the kernel of class Unix operating system starts, and starts demons.
According to one embodiment of present invention, in the time that class Unix operating system is installed, copy image file to storage medium.In the time starting class Unix operating system, to image file guiding, startup, wherein, guiding and the method starting are carried out separately according to the existing method of operating system.
According to one embodiment of present invention, storage medium comprises: host hard drive, portable hard drive, USB flash disk, flash memory or SSD.SSD(solid state hard disc: Solid State Disk), adopt solid-state electronic storage chip array and the hard disk made, formed by control module and storage unit (FLASH chip, dram chip).In the time that storage medium is USB flash disk or flash memory, start class Unix operating system by the USB interface of main frame.USB interface is USB2.0 or USB3.0 interface.
The operating system of LiveX form, for example LiveCD, refers to without installing and just can pass through the operating system of CD self-starting, and LiveCD is that operation is stored in a system on CD in fact, and the system that is stored in hard disk with operation is the same.Except CD, the thought of LiveX has also extended on other carriers such as DVD, flash memory disk, has just formed a lot of vocabulary such as LiveDVD, Live***.LiveUSB is operation system on other equipment such as flash memory or portable hard drive, carries out the startup of operating system by USB interface.In the storage medium of the class Unix operating system of LiveX form, store read-only image file, and start based on read-only image file,
According to one embodiment of present invention, class Unix operating system is the class Unix operating system of LiveX form, comprising: the class Unix operating system of LiveCD form, the class Unix operating system of LiveUSB form.
Fig. 2 is the process flow diagram of another embodiment of the method for the many time point backups of the class Unix operating system starting based on image file according to the present invention.As shown in Figure 2:
Vmlinuz is kernel guidable, compression.For example, vmlinuz is executable linux kernel, its be positioned at/boot/vmlinuz, and it is generally a soft link.
Linux Initial R AM disk (initrd) is a temporary root file system of carry in system bootup process, is used for supporting two stage bootup process.In initrd file, comprised various executable programs and driver, they can be used for the root file system of carry reality, and then by this initrd RAM disk unloading, and releasing memory.In a lot of embedded Linux systems, initrd is exactly final root file system.
Squashfs is a read-only file system, and it can or not have a single catalogue to be compressed together by whole file system, leaves certain equipment in, in certain subregion or common file.
Step 207, selects to start from the reflection of image queue entrance according to the boot configuration file of revising.
According to one embodiment of present invention, in the time that system starts, the delta file under general/bolod/rootsave with/, and merge by calling union file system interface with basic image file and increment image file, retain the modification that user carries out system, enter system.
Fig. 3 is the schematic diagram of an embodiment of the device of the many time point backups of the class Unix operating system starting based on image file according to the present invention.As shown in Figure 3: the device 31 of the many time point backups of class Unix operating system that start based on image file comprises: increment image file generation module 311 and restoring system backup operation module 312.
Increment image file generation module 311 is packaged as the multiple increment image files corresponding to different time points by delta file according to time sequencing.Wherein, in the time of class Unix operating system, will the modification of class Unix operating system be kept in delta file.
Restoring system backup operation module 312, in the time starting class Unix operating system, by the one or more increment image files in basic image file and multiple increment image file, merge operation by the order of time, creates new delta file.
According to one embodiment of present invention, increment image file generation module 311 is set up overall image queue, according to time sequencing, multiple increment image files is inserted in overall image queue.
Restoring system backup operation module 312 is determined recovery time point, reads overall image queue, copies recovery time point increment image file before;
Restoring system backup operation module 312 is revised boot configuration file, the increment image file before basic image file and recovery time point is merged by the order of time, by calling union file system interface, and create new delta file.
According to one embodiment of present invention, increment image file generation module 311 is packaged as the read-only basic image file of multiple and class Unix operating system with the increment image file of form according to different delta files according to time sequencing.
Creating after increment image file, increment image file generation module 311 is by increment image file is corresponding therewith delta file backup revised file name.Wherein, the form of basic image file comprises: standard ISO 9660 forms.
According to one embodiment of present invention, in the time that kernel starts, restoring system backup operation module 312 starts demons.In the time of class Unix operating system, call demons user is kept in delta file the modification of class Unix operating system; If delta file does not exist, increment image file generation module calls the newly-built delta file of demons.Delta file is stored in identical memory device with image file, or in different memory devices.
Method of the present invention and device, can select different backup operation systems according to different time points, the modification of not only can saved system doing, and provide the new mode of one of operating system backup and restore, can realize by the time backup and restore of multiple state points, and can realize two-way reduction, and make system can revert to front time point, also can revert to rear time point by front time point.
May realize in many ways method and system of the present invention.For example, can realize method and system of the present invention by any combination of software, hardware, firmware or software, hardware, firmware.The said sequence that is used for the step of method is only in order to describe, and the step of method of the present invention is not limited to above specifically described order, unless otherwise specified.In addition, in certain embodiments, can be also the program being recorded in recording medium by the invention process, these programs comprise the machine readable instructions for realizing the method according to this invention.Thereby the present invention also covers the recording medium of storing the program for carrying out the method according to this invention.
Description of the invention provides for example with for the purpose of describing, and is not exhaustively or limit the invention to disclosed form.Many modifications and variations are obvious for the ordinary skill in the art.Selecting and describing embodiment is for better explanation principle of the present invention and practical application, thereby and makes those of ordinary skill in the art can understand the present invention's design to be suitable for the various embodiment with various modifications of special-purpose.
Claims (10)
1. a method for the many time point backups of class Unix operating system that start based on image file, is characterized in that, comprising:
Delta file is generated to the multiple increment image files corresponding to different time points according to time sequencing; Wherein, in the time of class Unix operating system, will the modification of described class Unix operating system be kept in described delta file;
Starting when described class Unix operating system, by the one or more increment image files in basic image file and described multiple increment image file, merge operation by the order of time, create new delta file.
2. the method for claim 1, is characterized in that:
Set up overall image queue;
According to time sequencing, multiple increment image file names are inserted in overall image queue;
Determine recovery time point, read described overall image queue, copy recovery time point increment image file before;
Revise boot configuration file, the increment image file before basic image file and recovery time point is merged by the order of time, by calling union file system interface, and create new delta file.
3. method as claimed in claim 2, is characterized in that:
Be packaged as multiple increment image files according to different delta files according to time sequencing, the read-only basic image file of each increment image file and described class Unix operating system is same format; Wherein, creating after increment image file, by increment image file is corresponding therewith delta file backup revised file name;
Wherein, the form of basic image file comprises: standard ISO 9660 forms.
4. method as claimed in claim 3, is characterized in that:
In the time that kernel starts, start demons;
In the time of class Unix operating system, call described demons user is kept in delta file the modification of described class Unix operating system;
If described delta file does not exist, call the newly-built delta file of described demons;
Described delta file is stored in identical memory device with image file.
5. method as claimed in claim 4, is characterized in that:
Described memory device comprises: host hard drive, portable hard drive, USB flash disk, flash memory or SSD;
In the time that memory device is USB flash disk or flash memory, start class Unix operating system by the USB interface of main frame.
6. the method as described in claim 1 to 5 any one, is characterized in that:
The class Unix operating system that described class Unix operating system is LiveX form, comprising: the class Unix operating system of LiveCD form, the class Unix operating system of LiveUSB form;
Wherein, described class Unix operating system comprises: (SuSE) Linux OS.
7. a device for the many time point backups of class Unix operating system that start based on image file, is characterized in that, comprising:
Increment image file generation module, for being packaged as the multiple increment image files corresponding to different time points by delta file according to time sequencing; Wherein, in the time of class Unix operating system, will the modification of described class Unix operating system be kept in described delta file;
Restoring system backup operation module, in the time starting described class Unix operating system, by the one or more increment image files in basic image file and described multiple increment image file, merge operation by the order of time, creates new delta file.
8. device as claimed in claim 7, is characterized in that:
Described increment image file generation module is set up overall image queue, according to time sequencing, described multiple increment image files is inserted in overall image queue;
Described restoring system backup operation module is determined recovery time point, reads described overall image queue, copies recovery time point increment image file before;
Described restoring system backup operation module is revised boot configuration file, the increment image file before basic image file and recovery time point is merged by the order of time, by calling union file system interface, and create new delta file.
9. device as claimed in claim 8, is characterized in that:
Described increment image file generation module is packaged as multiple increment image files according to different delta files according to time sequencing, and the read-only basic image file of each increment image file and described class Unix operating system is same format; Wherein, creating after increment image file, described increment image file generation module is by increment image file is corresponding therewith delta file backup revised file name;
Wherein, the form of basic image file comprises: standard ISO 9660 forms.
10. method as claimed in claim 9, is characterized in that:
In the time that kernel starts, described restoring system backup operation module starts demons;
In the time of class Unix operating system, described restoring system backup operation module is called described demons user is kept in delta file the modification of described class Unix operating system;
If described delta file does not exist, described increment image file generation module calls the newly-built delta file of described demons;
Described delta file is stored in identical memory device with image file.
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