File processing method based on snapshot and solid state disk with snapshot function

A technology of file processing and solid-state hard disk, which is applied in the computer field and can solve problems such as practical inconvenience

Inactive Publication Date: 2012-09-26
RAMAXEL TECH SHENZHEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In summary, the existing backup and recovery methods of hard disk files obv...

Method used

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  • File processing method based on snapshot and solid state disk with snapshot function
  • File processing method based on snapshot and solid state disk with snapshot function
  • File processing method based on snapshot and solid state disk with snapshot function

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Embodiment Construction

[0034] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0035] see figure 2 , the present invention provides a solid-state hard disk with a snapshot function, and the solid-state hard disk 100 has a storage space for backing up files by storing snapshots. In a specific application, the solid-state hard disk 100 includes:

[0036] The file backup module 10 is configured to receive a file backup command, and establish a mapping table from logical address to physical address currently used by the file. In the embodiment of the present invention, if the data of the file before the operation changes, the corresponding backups before and after the operatio...

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Abstract

The invention is suitable for the technical field of computers, and provides a file processing method based on snapshot. The method comprises the following steps of receiving a file backup command; building a mapping table from a logic address to a physical address, which is used by the file at present; receiving a file backup recovery command; and storing the mapping table from the logic address to the physical address, which is used by an appointed backup of the file, to the mapping table from the logic address to the physical address, which is used at present. Preferentially, if the file has constant data before and after being operated, a corresponding first snapshot produced before the file is operated and a corresponding second snapshot produced after the file is operated share the physical address of the data. Therefore, according to the method, the file can be conveniently backed up and restored, and all backups of the file can share a large quantity of constant data to save disk space.

Description

technical field [0001] The invention relates to the technical field of computers, in particular to a snapshot-based file processing method and a solid-state hard disk with a snapshot function. Background technique [0002] File backup and restoration are extremely important operations during computer use. Computer viruses, misuse, etc. may damage the file, and it is very necessary to be able to restore the file to the previous specified state. The traditional file backup method is to actively copy the file to a designated location and save it. When the file backup needs to be restored, the file backup is copied from this special location, so that the content of the file is restored to the state at the time of backup. The big problem with using this copy method to realize file backup and restoration is that each file backup occupies the hard disk space independently, and the process of backup and restoration is to copy all data on the hard disk, and this process often It ta...

Claims

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Application Information

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IPC IPC(8): G06F11/14
CPCG06F11/14G06F11/1446G06F2201/84
Inventor 廖东方
Owner RAMAXEL TECH SHENZHEN
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