Method for having access to disc array through partition remapping

A disk array and remapping technology, applied in the direction of input/output to record carrier, etc., can solve problems such as parallel IO writing bottlenecks, disk resonance, etc., and achieve the effect of eliminating the impact

Inactive Publication Date: 2014-05-07
TOYOU FEIJI ELECTRONICS
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  • Abstract
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Problems solved by technology

[0006] The invention provides a region remapping method, which is applied in the process of creating a disk array in the storage field, and solves the existing problem of parallel IO writing bottleneck and disk resonance problem based on stripe technology

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  • Method for having access to disc array through partition remapping
  • Method for having access to disc array through partition remapping
  • Method for having access to disc array through partition remapping

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Embodiment Construction

[0022] The present invention will be described in detail below in conjunction with specific implementation cases, taking creating a disk array for three 3TB Seagate SATA hard disks in a Linux storage server as an example.

[0023] Such as figure 1 As shown, according to step 1, obtain all storage medium information;

[0024] According to step 2, divide the storage medium into regions, and divide the partitions according to the depth of Stripe;

[0025] According to step 3, create a disk array;

[0026] Such as figure 2 As shown, according to step 4, first access the disk array in the traditional way:

[0027] (1) Insert three 3TB SATA hard disks into the storage server and power on to start.

[0028] (2) The system normally recognizes three 3TB SATA hard disks.

[0029] (3) Divide three 3TB SATA hard drives into three areas with the size of STRIPE=1TB.

[0030] (4) Create a disk array (RAID5) and wait for the disk array initialization to end.

[0031] (5) Carry out bs=...

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Abstract

The invention relates to a method for having access to a disc array through partition remapping. Region dividing is carried out on a storage medium by obtaining all storage medium information, the disc array is built in a traditional mode, the access to the disc array is achieved through several steps like partition remapping, and after the partition remapping, the access of an original disc array to a physical region is changed to the access to a logic region. According to the disclosed stripe remapping method, stripes in a disc array set are remapped, a magnetic track on the outermost circle and a magnetic track relatively close to the inner circle are combined, a magnetic track on the innermost ring and a magnetic track relative to the outer circle are combined, wave crests and wave trough with the disc array performance are balanced and integrated, and therefore the aim of balancing IO performance of the disc array is achieved.

Description

technical field [0001] The invention relates to a method for accessing a disk array through partition remapping, and belongs to the technical field of computer storage. Background technique [0002] The ZDR (Zone Data Recording) technology of the hard disk is the area data recording technology. Since the hard disk spindles all work at a constant angular velocity, and the circumference of the outermost circle of the disk is much longer than that of the innermost circle, when the magnetic head is on the outermost circle, although the angle of placement is the same as that of the innermost circle, But the distance traveled is much longer. In this way, if the number of sectors in the innermost and outermost tracks is the same, it will cause a huge waste of storage space. For this reason, hard disk manufacturers have developed the ZDR technology, which divides several areas from the outermost circle of the disk. The sectors per track in each area are consistent, but the number ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/06
Inventor 王献飞杨峰孙斌周泽湘罗华李辉方仑单晓宇
Owner TOYOU FEIJI ELECTRONICS
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