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Massive file rapid synthetic backup method

A technology for synthesizing backup and massive files, applied in the computer field, can solve problems such as low backup speed, reduce coupling, avoid movement, and improve robustness

Inactive Publication Date: 2018-03-09
NANJING UNARY INFORMATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In order to solve the deficiencies in the prior art, the present invention provides a method for fast synthetic backup of massive data based on an index library, which solves the problem of low backup speed caused by write and move operations of incremental backup file data under massive data

Method used

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  • Massive file rapid synthetic backup method
  • Massive file rapid synthetic backup method

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specific Embodiment

[0038] Such as figure 1As shown, the latest full backup timestamp index table includes full backup file index record 1, full backup file index record 2, full backup file index record 3; and incremental backup file index record 11, incremental backup file index record 31; by Compare full and incremental backup file index records to obtain the latest unexpired backup file index records, that is, incremental backup file index records 11, full backup file index records 2, and incremental backup file index records 31 to form a synthetic backup file index record set; the file index records in the latest synthetic backup file index record set record the location offset corresponding to the backup target data of the storage medium, so only the backup file index record set needs to be corrected during the entire synthetic backup process, and no modification is required. The storage medium data is moved, which improves the backup efficiency and shortens the backup time.

[0039] Logica...

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Abstract

The invention discloses a massive file rapid synthetic backup method. By singly constructing an index database and separating the index database from backup file data on a storage medium, file data offset in the backup process is written into the index database without performing data actual movement operation to reorganize backup set data, data movement operation is logically finished, and a newindex record corresponding to synthetic backup data is produced, so that backup data movement is avoided, and only a small quantity of index data records are needed; during restoration, restoration operation is performed according to an offset, corresponding to backup file data on the storage medium, in the index database; and the backup speed is effectively improved to achieve business support toa massive data environment at the same time.

Description

technical field [0001] The invention relates to the technical field of computers, in particular to a method for rapidly synthesizing and backing up massive files. Background technique [0002] Synthetic backup refers to the combination of full backup data and incremental backup data in the storage medium through a certain algorithm to generate a new full backup data, but this kind of synthetic backup consumes time proportional to the amount of data that needs to be merged and takes up a lot of storage resources , when a large amount of backup data is encountered, the backup speed is low. [0003] Incremental backup means that after a full file backup or the last file incremental backup, each subsequent backup only needs to back up the files that have been added or modified compared with the previous one. This means that the object of the first incremental backup is the added or modified files generated after the full backup; the object of the second incremental backup is th...

Claims

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Application Information

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IPC IPC(8): G06F11/14G06F17/30
CPCG06F11/1453G06F11/1469G06F16/11
Inventor 王仁杰张有成许萍萍
Owner NANJING UNARY INFORMATION TECH
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