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Method for implementing document condition compatibility maintenance in inspection point fault-tolerant technique

A fault-tolerant technology and implementation method technology, applied in the file management and fault-tolerant fields, can solve problems such as consistency problems, and achieve the effects of low overhead, easy deployment, and good portability

Inactive Publication Date: 2008-09-03
TSINGHUA UNIV
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

Files that have been closed between checkpoints must also be considered, otherwise it will also cause consistency problems

Method used

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  • Method for implementing document condition compatibility maintenance in inspection point fault-tolerant technique
  • Method for implementing document condition compatibility maintenance in inspection point fault-tolerant technique
  • Method for implementing document condition compatibility maintenance in inspection point fault-tolerant technique

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Embodiment Construction

[0077] The file system oriented to checkpoint setting and rollback recovery, referred to as CprFS, runs in the user state and works with the existing file system in a stacked manner, as an intermediate manager between user programs and files to realize data management and maintenance; CprFS consists of two parts ( image 3 Shows the relationship between these two components and other components of the operating system): CprFS runtime file system and CprFS function library; CprFS runtime file system provides standard file access interface to user programs and tracks file state transitions to complete data maintenance Main work; CprFS function storehouse provides transaction processing interface to user program, is used for sending corresponding operation request to CprFS runtime file system; Described CprFS system comprises following function modules (such as Figure 4 shown):

[0078] Address mapping module: CprFS runs on top of other file systems in a stacked manner. As a c...

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Abstract

The realization method of maintaining file states coherence in checkpoint fault-tolerance technology belongs to file checkpoint technology field in fault-tolerance technology, which is characterized in that a checkpoint setting and rollback recovery file system comprising a file system and a function library in operating is built between a bottom file system and a user program, wherein, the mapping relation of system mount point and actual data road is mapped by address mapping mould; file operation claims of user is executed by a journal management mould; operated file states are renewed by a state tracking mould; files' access conflicts are detected by a conflict detection mould; submission operations of buffer mode are executed by a data submission mould according to file state and the buffer data is written back to the magnetic disk. The invention has following advantages: integrality, transparence, easy deployment, portability, low expense and self-adaptability, and especially is suitable for a high performance computer to ensure the checkpoint can exactly recover file state coherence after error occurs.

Description

technical field [0001] The implementation method of file state consistency maintenance in the checkpoint fault-tolerant technology belongs to the field of fault-tolerant technology, especially relates to the field of file management. Background technique [0002] The development of society requires more and more computer computing power, and large-scale parallel computing has become the mainstay of national defense, finance, Internet and other fields. The development of hardware technology and the improvement of network transmission speed have reduced the cost of the system, the scale of the system is gradually increasing, and the computing power is constantly improving. But at the same time, the cumulative failure points of the system increase, and the availability and reliability of the system are greatly challenged, which seriously limits the scalability of the system and brings huge economic losses. [0003] If a system fails to meet its functional requirements, it is c...

Claims

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Application Information

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IPC IPC(8): G06F11/14G06F17/30
Inventor 郑纬民陈文光薛瑞尼
Owner TSINGHUA UNIV
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