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Safety-enhanced log file system

A log file and enhanced technology, applied in response to error generation, instrumentation, electrical digital data processing, etc., can solve problems such as incomplete log writing, inability to ensure the security of the log writing process, and inability to realize file system recovery, etc. , to achieve the effect of preventing inconsistencies

Inactive Publication Date: 2018-11-30
SHANDONG CHAOYUE DATA CONTROL ELECTRONICS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the journaling file system is affected by an unexpected power failure while writing the journal, resulting in incomplete journal writing, the recovery of the file system cannot be achieved
The journal writing process cannot be secured against journaling filesystems

Method used

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  • Safety-enhanced log file system

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Embodiment Construction

[0020] The content of the present invention is described in more detail below:

[0021] The invention mainly includes the following two parts: a BBU high-speed storage device and a redirection mechanism when data is written.

[0022] BBU high-speed storage device: BBU is the abbreviation of Battery Backup Unit (Battery Backup Unit), which is a replaceable part. The BBU provides power for the controller cache. When a power failure occurs, it can ensure that the cache data is completely written to the external storage. . The log file system proposed this time is different from the general log file system in that its log records and data are stored in different devices, log records are stored in high-speed storage with BBU power-down protection, and file system data is stored in General system tray. Since the writing time of the high-speed storage device is very short, and there is backup power protection in case of power failure, it is ensured that the log writing process will...

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Abstract

The invention provides a safety-enhanced log file system, and relates to the field of Linux log file systems. The safety-enhanced log file system mainly comprises BBU (battery backup unit) high-speedmemory equipment and a data redirection-on-write mechanism. The safety-enhanced log file system has the advantages that the log writing integrity of the safety-enhanced log file system can be guaranteed by the aid of the external BBU high-speed memory equipment and redirection-on-write technologies, accordingly, the consistency of file systems can be guaranteed, and the recovery time can be effectively shortened when the file systems fail.

Description

technical field [0001] The invention relates to the field of Linux log file systems, in particular to a security-enhanced log file system. Background technique [0002] The biggest difference between a log file system and a traditional file system is that the log record of changes is added to the file system. Its design idea is to track and record changes in the file system and record the changes in the log. The log file system maintains log records in the disk partition. The write operation first operates on the record file. If the entire write operation is interrupted for some reason, when the system restarts, the write operation before the interruption will be resumed according to the log records. In a journaling filesystem, a journal records all filesystem changes. At regular intervals, the file system writes updated metadata and file content to disk. [0003] Based on the above principles, most of the current log file systems can deal with the vast majority of file s...

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Application Information

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IPC IPC(8): G06F11/14
CPCG06F11/1435G06F11/1441
Inventor 李冬冬李童任洪伟宋宇
Owner SHANDONG CHAOYUE DATA CONTROL ELECTRONICS CO LTD