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Method of setting hard disk restricted zone for logical volume and backing up configuration information by using hard disk restricted zone

A technology for configuring information and logical volumes, applied in response to error generation, redundant data error detection in operations, input/output to record carriers, etc., can solve customer business impact, data loss, etc.

Active Publication Date: 2017-09-15
北京银信长远科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still too many cases of data loss caused by misoperation or hard disk failure. Once the data is lost, it will have a very serious impact on the customer's business

Method used

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  • Method of setting hard disk restricted zone for logical volume and backing up configuration information by using hard disk restricted zone
  • Method of setting hard disk restricted zone for logical volume and backing up configuration information by using hard disk restricted zone

Examples

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example 1

[0061] Example 1, taking the ST3300655LC hard disk as an example, it can be divided into 558 PPs, and the size of each PP is 512M. The position that needs to be offset from the hard disk head is:

[0062] 558 x 2048 x 512 --- The tail position of the last pp

[0063] +2048 x 512 / 2 --- offset by 1 / 2 PP size

[0064] -1--- as the cutoff position, so -1

[0065] = 299574493183

[0066] The specific commands are as follows:

[0067] dd if=test of= / dev / hdiskx bs=512 skip=299574493183 If the command fails, it means that the end of the hard disk is exceeded, and continue to split.

[0068] 2) Set the data format of the logical volume configuration to be backed up and use the hard disk restricted area to back up the logical volume configuration

[0069] Premise: Any version of the logical volume management system needs to describe the following information:

[0070] 1. The number of physical partitions (PP) of the hard disk;

[0071] 2. The size of each physical partition, in ...

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Abstract

The method for setting hard disk restricted area by logical volume and backing up configuration information by using the hard disk restricted area relates to the field of information technology, especially the field of data security in computer operating systems, and the field of data backup and recovery. The specific implementation of the present invention includes two parts, which are respectively setting the hard disk restricted area under the logical volume management system through the segmentation mechanism and setting the data format of the backup logical volume configuration and using the hard disk restricted area to back up the logical volume configuration. The present invention provides It provides a method for setting the restricted area of ​​the hard disk under the logical volume management system without programming and calling the segmentation mechanism of the hard disk function, and stipulates the data format of the logical volume configuration backup. In the case of operation or partial failure of the hard disk, restore the logical volume management system, restore data, and resume business operation.

Description

technical field [0001] The invention relates to the field of information technology, especially the field of data security in computer operating systems, and data backup and restoration. Background technique [0002] First introduce the basic principle of hard disk data storage: the most basic unit of hard disk is sector SECTOR, a hard disk can be used by the operating system, its sector size SIZE must be 512 bytes. Basically all operating systems, including WINDOWS, UNIX, and LINUX, use 512 bytes as the smallest data access unit, and this data unit is named data block BLOCK. [0003] Take a ST3300655LC hard disk produced by Seagate as an example. This hard disk is a 300g SCSI hard disk with a sector size of 512 bytes and a total of 585,937,500 sectors, so its actual capacity is about 279g. Calculation formula: 512*585,937,500 / 1024K / 1024M / 1024G is almost 279.36g. Here 585,937,500 sectors are the actual available capacity of the hard disk. [0004] In UNIX or LINUX, in ord...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/06G06F11/14
Inventor 关宁风
Owner 北京银信长远科技股份有限公司