CN109062576A - A kind of method and device for repairing file system by initramfs - Google Patents
A kind of method and device for repairing file system by initramfs Download PDFInfo
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- CN109062576A CN109062576A CN201810789866.3A CN201810789866A CN109062576A CN 109062576 A CN109062576 A CN 109062576A CN 201810789866 A CN201810789866 A CN 201810789866A CN 109062576 A CN109062576 A CN 109062576A
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- initramfs
- file system
- breakpoint
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- repairing
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F8/00—Arrangements for software engineering
- G06F8/40—Transformation of program code
- G06F8/41—Compilation
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/14—Error detection or correction of the data by redundancy in operation
- G06F11/1402—Saving, restoring, recovering or retrying
- G06F11/1415—Saving, restoring, recovering or retrying at system level
- G06F11/1417—Boot up procedures
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/4401—Bootstrapping
- G06F9/4406—Loading of operating system
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- Theoretical Computer Science (AREA)
- General Engineering & Computer Science (AREA)
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- General Physics & Mathematics (AREA)
- Quality & Reliability (AREA)
- Computer Security & Cryptography (AREA)
- Stored Programmes (AREA)
Abstract
The present invention provides a kind of method and device that file system is repaired by initramfs, includes the following steps: to establish temporary folder under system；It recompilates and generates initramfs and file system fix tool is compiled into initramfs；It is arranged and interrupts the initramfs that breakpoint carries out newly compiled generation；Inquire root file system format；The reparation instruction of file system is executed according to partition system file format.Initramfs is recompilated, and fsck.ext3, fsck.ext4, xfs_repair file system fix tool are installed into initramfs；Initramfs after compiling is put into/boot catalogue.
Description
Technical field
The present invention relates to system file recovery technique fields, and in particular to one kind repairs file system by initramfs
Method and device.
Background technique
It goes wrong during linux system disk read-write, such as abnormal end, interface loosening, powered-off fault or application
When process read-write error, file system corruption will lead to, need to carry out file system reparation operation；If it is nonsystematic
Place disk can use the tools such as fsck, xfs_repair to file system such as data disks file system corruption under system
It is repaired；But if the file system where system on disk goes wrong, and system will be unable to normally start, system root directory
Can not normal carry, starting rest on the interface initramfs, file system can not be carried out and repair the existing solution to the problem
Scheme is needed from CD media, or installs image starting disk startup equipped with system identical with current system, into Rescue
It is repaired in the bash shell of rescue mode, complicated operation and needs the media tools such as system disk.
Summary of the invention
In order to overcome the deficiencies in the prior art described above, the present invention provides one kind and repairs file system by initramfs
Method and device, to solve the above technical problems.
Technical solution of the present invention:
A method of file system is repaired by initramfs, is included the following steps:
It recompilates and generates initramfs and file system fix tool is compiled into initramfs；
It is arranged and interrupts the initramfs that breakpoint carries out newly compiled generation；
Inquire root file system format；
The reparation instruction of file system is executed according to partition system file format.
Further, step, which recompilates, generates initramfs and file system fix tool is compiled into initramfs
Include: before
Temporary folder is established under system.
Further, step, which recompilates, generates initramfs and is compiled into file system fix tool
Initramfs, comprising:
Initramfs is recompilated, and fsck.ext3, fsck.ext4, xfs_repair file system fix tool are installed
Into initramfs；
Initramfs after compiling is put into/boot catalogue.
Further, the initramfs that breakpoint carries out newly compiled generation is interrupted in step setting, comprising:
The editor of grub parameter is carried out when system starts at the interface grub；
Increase rdbreak=[breakpoint] in kernel row；
According to the breakpoint inter rupt of setting when system starts to initramfs automatically, initramfs system is entered from breakpoint.
Further, according to the breakpoint inter rupt of setting when step system starts to initramfs automatically, enter from breakpoint
Initramfs system, comprising:
Initrd row is modified, is revised as launching into from/initramfs-rapairfs.img file guidance by ' b '
Initramfs system.
Further, step inquires root file system format, comprising:
Blkid order is executed, determines root file system format.
Technical solution of the present invention also provide it is a kind of by initramfs repair file system device, including collector,
Interrupt setup module, enquiry module and execution module；
Collector, for recompilating generation initramfs and file system fix tool being compiled into initramfs；
Setup module is interrupted, for the initramfs for interrupting breakpoint and entering newly compiled generation to be arranged；
Enquiry module, for inquiring root file system format；
Execution module, the reparation for executing file system according to partition system file format instruct.
Further, which further includes creation module, the creation module, for establishing temporary file under system
Folder.
Further, step, which recompilates, generates initramfs and is compiled into file system fix tool
Initramfs, comprising:
Collector, for recompilating initramfs, and by fsck.ext3, fsck.ext4, xfs_repair file system
Fix tool is installed into initramfs, and the initramfs after compiling is put into/boot catalogue.
Further, interrupting setup module includes parameter compilation unit, breakpoint setup unit and breakpoint interface unit；
Parameter compilation unit carries out the editor of grub parameter at the interface grub when for system starting；
Breakpoint setup unit, for increasing rdbreak=[breakpoint] in kernel row；
Breakpoint interface unit, according to the breakpoint inter rupt of setting when starting to initramfs automatically for system, from breakpoint interface list
Enter initramfs system at member.
Interrupting setup module further includes breakpoint interface trigger unit；
The breakpoint interface trigger unit is used for used modification initrd row, is revised as from/initramfs-rapairfs.img
File guidance launches into initramfs system by triggering key ' b '.
The stage for entering initramfs as breakpoint include cmdline, pre-udev, pre-trigger,
initqueue,pre-mount,mount,pre-pivot,cleanup；
Wherein, the content that the cmdline stage executes is to parse the parameter of kernel cmdline；
Before the content that the pre-udev stage executes is udev starting, write-in udev rule；
The content that the pre-trigger stage executes is setting udev environmental variance after udev starting；
The content that the initqueue stage executes is udev time monitoring/waiting time-out/end；
The time point that the pre-mount stage executes is the time point before mount root partition；
The content that the mount stage executes is by true root file system mount to/sysroot；
The time point that the pre-pivot stage executes is the time point before being switched to the systemd of true root file system；
The content that the cleanup stage executes is last cleaning work before being switched to the systemd of true root file system.
As can be seen from the above technical solutions, the invention has the following advantages that entering contingency mode without CD mirroring
In the case where, can by the file system fix tool such as fsck.ext3, fsck.ext4, xfs_repair, recompilate into
In initramfs mirror image, and by the breakpoint of initramfs, breakpoint is advanced into mount/sysroot root,
In initramfs, the file system of disk where system root directory is completed to repair, guarantees that system disk restores to operate normally shape
State.
In addition, design principle of the present invention is reliable, structure is simple, has very extensive application prospect.
It can be seen that compared with prior art, the present invention have substantive distinguishing features outstanding and it is significant ground it is progressive, implementation
Beneficial effect be also obvious.
Detailed description of the invention
Fig. 1 is a kind of method flow schematic diagram that file system is repaired by initramfs；
Fig. 2 is the initramfs flow diagram that setting interrupts that breakpoint carries out newly compiled generation.
Specific embodiment
The present invention will be described in detail with reference to the accompanying drawing and by specific embodiment, and following embodiment is to the present invention
Explanation, and the invention is not limited to following implementation.
Technical solution of the present invention:
Embodiment one
As shown in Figure 1, a kind of method for repairing file system by initramfs, includes the following steps:
S1: it recompilates and generates initramfs and file system fix tool is compiled into initramfs；
S2: the initramfs that breakpoint carries out newly compiled generation is interrupted in setting；
S3: inquiry root file system format；
S4: it is instructed according to the reparation that partition system file format executes file system.
Include: before step S1
S0: temporary folder is established under system.
Step S1 includes:
S11: initramfs is recompilated, and by fsck.ext3, fsck.ext4, xfs_repair file system fix tool
It is installed into initramfs；
S12: the initramfs after compiling is put into/boot catalogue.
As shown in Fig. 2, step S2 includes:
S21: the editor of grub parameter is carried out when system starts at the interface grub；
S22: increase rdbreak=[breakpoint] in kernel row；
S23: according to the breakpoint inter rupt of setting when system starts to initramfs automatically, initramfs system is entered from breakpoint
System.
Step S23 includes:
Initrd row is modified, is revised as launching into from/initramfs-rapairfs.img file guidance by ' b '
Initramfs system.
Step S3 includes:
Blkid order is executed, determines root file system format.
Embodiment two
A method of file system is repaired by initramfs, is included the following steps:
S0: temporary folder is established under system:
# mkdir /test & cd /test
S1: initramfs is recompilated, and by the file system fix tool such as fsck.ext3, fsck.ext4, xfs_repair
Installation is entered:
# dracut --install 'fsck.ext3 fsck.ext4 xfs_repair' initramfs-
repairfs.img
New initramfs is put into/boot catalogue is spare:
# mv /test/initramfs-rapairfs.img /boot
S2: when needing to repair file system in initramfs, starting to the interface grub, modifies by ' e ', modifies kernel
Row increases the breakpoint of initramfs in end of line, advances into breakpoint in mount/sysroot root:
rdbreak=mount
Initrd row is modified, is revised as launching into from/initramfs-rapairfs.img file guidance by ' b '
Initramfs system；
The stage for entering initramfs as breakpoint include cmdline, pre-udev, pre-trigger, initqueue,
pre-mount,mount,pre-pivot,cleanup；
Wherein, the content that the cmdline stage executes is to parse the parameter of kernel cmdline；
Before the content that the pre-udev stage executes is udev starting, write-in udev rule；
The content that the pre-trigger stage executes is setting udev environmental variance after udev starting；
The content that the initqueue stage executes is udev time monitoring/waiting time-out/end；
The time point that the pre-mount stage executes is the time point before mount root partition；
The content that the mount stage executes is by true root file system mount to/sysroot；
The time point that the pre-pivot stage executes is the time point before being switched to the systemd of true root file system；
The content that the cleanup stage executes is last cleaning work before being switched to the systemd of true root file system.
S3: blkid order is executed, determines root file system format ,/dev/mapper/vg_lj-lv_root is
ext4
switch_roof:/# blkid
/dev/sda1:UUID=”167a9c00-dfcf-4df9-890d-556abee6fe8b”TYPE=”ext4”
/dev/sda2:UUID=”WZw5IJ-OWiB-f45g-0NrK-1b2z-Ie26-qqsied”TYPE=”LVM2_member”
/dev/mapper/vg_Ij-Iv_root:UUID=”5e9e46a2-1083-4364-8c11-914bb76ba8f9”TYPE
=”ext4”
/dev/mapper/vg_Ij-Iv_swap:UUID=49ca5145-5939-460e-863f-849f5d9fb38d”TYPE
=”swap”
switch_root:/#_
S4: according to zoned format, file system reparation instruction is executed:
# fsck.ext4 /dev/mapper/vg_lj-lv_root
mount:/#fsck.ext4/dev/mapper/vg_Ij-Iv_root
e2fsck1.41.12(17-May-2018)
/dev/mapper/vg_lj-lv_root:recovering journal
/dev/mapper/vg_lj-lv_root:clean,224176/1148304 files,3005515/4589568
blocks
mount:/#_
Embodiment three
It is a kind of by initramfs repair file system device, including collector, interrupt setup module, enquiry module and
Execution module；
Collector, for recompilating generation initramfs and file system fix tool being compiled into initramfs；
Setup module is interrupted, for the initramfs for interrupting breakpoint and entering newly compiled generation to be arranged；
Enquiry module, for inquiring root file system format；
Execution module, the reparation for executing file system according to partition system file format instruct.
The system further includes creation module, the creation module, for establishing temporary folder under system.
Step, which recompilates, to be generated initramfs and file system fix tool is compiled into initramfs, comprising:
Collector, for recompilating initramfs, and by fsck.ext3, fsck.ext4, xfs_repair file system
Fix tool is installed into initramfs, and the initramfs after compiling is put into/boot catalogue.
Interrupting setup module includes parameter compilation unit, breakpoint setup unit and breakpoint interface unit；
Parameter compilation unit carries out the editor of grub parameter at the interface grub when for system starting；
Breakpoint setup unit, for increasing rdbreak=[breakpoint] in kernel row；
Breakpoint interface unit, according to the breakpoint inter rupt of setting when starting to initramfs automatically for system, from breakpoint interface list
Enter initramfs system at member.
Interrupting setup module further includes breakpoint interface trigger unit；
The breakpoint interface trigger unit is used for used modification initrd row, is revised as from/initramfs-rapairfs.img
File guidance launches into initramfs system by triggering key ' b '.
Description and claims of this specification and term " first ", " second ", " third " " in above-mentioned attached drawing
The (if present)s such as four " are to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should manage
The data that solution uses in this way are interchangeable under appropriate circumstances, so as to the embodiment of the present invention described herein can in addition to
Here the sequence other than those of diagram or description is implemented.In addition, term " includes " and " having " and their any deformation,
It is intended to cover and non-exclusive includes.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (10)
1. a kind of method for repairing file system by initramfs, which comprises the steps of:
It recompilates and generates initramfs and file system fix tool is compiled into initramfs；
It is arranged and interrupts the initramfs that breakpoint carries out newly compiled generation；
Inquire root file system format；
The reparation instruction of file system is executed according to partition system file format.
2. a kind of method for repairing file system by initramfs according to claim 1, which is characterized in that step
It recompilates and generates initramfs and include: before file system fix tool is compiled into initramfs
Temporary folder is established under system.
3. a kind of method for repairing file system by initramfs according to claim 1, which is characterized in that step
It recompilates and generates initramfs and file system fix tool is compiled into initramfs, comprising:
Initramfs is recompilated, and fsck.ext3, fsck.ext4, xfs_repair file system fix tool are installed
Into initramfs；
Initramfs after compiling is put into/boot catalogue.
4. a kind of method for repairing file system by initramfs according to claim 3, which is characterized in that step
It is arranged and interrupts the initramfs that breakpoint carries out newly compiled generation, comprising:
The editor of grub parameter is carried out when system starts at the interface grub；
Increase rdbreak=[breakpoint] in kernel row；
According to the breakpoint inter rupt of setting when system starts to initramfs automatically, initramfs system is entered from breakpoint.
5. a kind of method for repairing file system by initramfs according to claim 4, which is characterized in that step
According to the breakpoint inter rupt of setting when system starts to initramfs automatically, initramfs system is entered from breakpoint, comprising:
Initrd row is modified, is revised as launching into from/initramfs-rapairfs.img file guidance by ' b '
Initramfs system.
6. a kind of method for repairing file system by initramfs according to claim 5, which is characterized in that step
Inquire root file system format, comprising:
Blkid order is executed, determines root file system format.
7. a kind of device for repairing file system by initramfs, which is characterized in that including collector, interrupt setting mould
Block, enquiry module and execution module；
Collector, for recompilating generation initramfs and file system fix tool being compiled into initramfs；
Setup module is interrupted, for the initramfs for interrupting breakpoint and entering newly compiled generation to be arranged；
Enquiry module, for inquiring root file system format；
Execution module, the reparation for executing file system according to partition system file format instruct.
8. a kind of device for repairing file system by initramfs according to claim 7, which is characterized in that this is
System further includes creation module, the creation module, for establishing temporary folder under system.
9. a kind of device for repairing file system by initramfs according to claim 7, which is characterized in that step
It recompilates and generates initramfs and file system fix tool is compiled into initramfs, comprising:
Collector, for recompilating initramfs, and by fsck.ext3, fsck.ext4, xfs_repair file system
Fix tool is installed into initramfs, and the initramfs after compiling is put into/boot catalogue.
10. a kind of device for repairing file system by initramfs according to claim 7, which is characterized in that interrupt
Setup module includes parameter compilation unit, breakpoint setup unit and breakpoint interface unit；
Parameter compilation unit carries out the editor of grub parameter at the interface grub when for system starting；
Breakpoint setup unit, for increasing rdbreak=[breakpoint] in kernel row；
Breakpoint interface unit, according to the breakpoint inter rupt of setting when starting to initramfs automatically for system, from breakpoint interface list
Enter initramfs system at member.
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| CN201810789866.3A CN109062576A (en) | 2018-07-18 | 2018-07-18 | A kind of method and device for repairing file system by initramfs |
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| CN110147311A (en) * | 2019-04-03 | 2019-08-20 | 珠海全志科技股份有限公司 | A kind of system upgrade method of calibration and device |
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| CN110532032A (en) * | 2019-07-31 | 2019-12-03 | 华为技术有限公司 | A kind of booting file system detection method and relevant device |
| CN112948170A (en) * | 2019-12-10 | 2021-06-11 | 中标软件有限公司 | Method for realizing system power-down protection by using snapshot function of equipment mapping |
| CN113316761A (en) * | 2019-12-08 | 2021-08-27 | 西部数据技术公司 | Self-formatting data storage device |
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| CN110147311A (en) * | 2019-04-03 | 2019-08-20 | 珠海全志科技股份有限公司 | A kind of system upgrade method of calibration and device |
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| CN112948170B (en) * | 2019-12-10 | 2024-04-09 | 中标软件有限公司 | Method for realizing system power-down protection by using snapshot function of equipment mapping |
| CN113740781A (en) * | 2021-08-30 | 2021-12-03 | 广州文远知行科技有限公司 | Interface looseness detection method and device, vehicle and storage medium |
| CN113740781B (en) * | 2021-08-30 | 2022-05-24 | 广州文远知行科技有限公司 | Interface looseness detection method and device, vehicle and storage medium |
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Application publication date: 20181221 |