System capable of restoring file system

A file system and operating system technology, applied to the generation of response errors, error detection of redundant data in calculations, instruments, etc., can solve the problems of no way to repair the file system, user debugging and difficulty in use, etc., to meet the requirements Read and write requirements, save maintenance time and cost, save space

Pending Publication Date: 2021-03-30
北京君正集成电路股份有限公司
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AI Technical Summary

Problems solved by technology

[0007] The traditional Read-only file system is read-only (ro). The advantage of a read-only file system is better security, which can effectively protect the data in the file system and reduce the risk of file system damage, but the disadvantages are also obvious. Yes, when the system file system is damaged, there is no way to repair and restore the file system
Users cannot modify the data in the file system, which will cause difficulties for users to debug and use
Especially when the system file system is damaged, there is no way to repair and restore the file system

Method used

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  • System capable of restoring file system
  • System capable of restoring file system

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Embodiment Construction

[0021] At present, commonly used technical terms in this technical field include:

[0022] File system: The software organization responsible for managing and storing file information in the operating system is called a file management system, or file system for short.

[0023] Device mapper: It is a mapping framework mechanism from logical devices to physical devices provided in the Linux 2.6 kernel. Under this mechanism, users can easily formulate management strategies for realizing storage resources according to their own needs. Device mapper further embodies the principle of separation of policies and mechanisms in the design of the Linux kernel, and puts all policy-related work in user space to complete, and the kernel mainly provides the mechanisms required to complete these policies.

[0024] Read-only file system: read-only file system.

[0025] ro: The file / filesystem attribute is read-only.

[0026] rw: The file / filesystem attribute is read-write.

[0027] IMG is ...

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Abstract

The invention provides a system capable of restoring a file system. The system comprises a file system; a read-write partition which is used for copying the content of the file system and can be usedfor carrying out read-write operation according to the requirements of a user; a storage unit which is used for storing a device mapper software package, wherein the operating system calls a mountinginstruction in the device mapper software package to mount the file system and the readable-writable partition by utilizing a device mapping mechanism to form a file system with the readable-writablepartition, and after the original file system before mounting is damaged under the abnormal power failure or emergency situation, the mounted file system copied in the readable and writable partitionis started.

Description

technical field [0001] The invention relates to the field of computer operating systems, in particular to a system capable of restoring file systems. Background technique [0002] With the continuous development of science and technology, especially the development of computer technology and the arrival of the era of big data technology, Devicemapper is more and more widely used. Device mapper is a mapping framework mechanism from logical devices to physical devices provided in the Linux 2.6 kernel. Under this mechanism, users can easily formulate and implement storage resource management strategies according to their own needs. Currently, the popular Linux Logical volume managers such as LVM2 (Linux Volume Manager2version), EVMS (Enterprise Volume Management System), dmraid (Device Mapper RaidTool), etc. are all implemented based on this mechanism. It provides a highly modular kernel architecture for implementing block device drivers for storage resource management. It con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F11/14
CPCG06F11/1458
Inventor 唐鑫
Owner 北京君正集成电路股份有限公司
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