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Method and device for achieving RAID reconstitution

A storage location, disk technology, applied in the input/output process of data processing, instruments, electrical and digital data processing, etc., can solve the problems of data loss, unrecoverable data, RAID failure, etc.

Active Publication Date: 2015-03-11
INSPUR BEIJING ELECTRONICS INFORMATION IND
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Problems solved by technology

However, once there are also bad sectors in the remaining disks in the RAID group, it will be impossible to recover the data on the sector where the failed disk that caused the RAID reconstruction is the same as the bad sector in the remaining disks in the RAID group
Since hard disk failures are mostly caused by sector failures in a small number of blocks, the relative probability of disk reconstruction failure due to a small number of sector errors is relatively high, and errors in a small number of sectors cause the entire disk to be kicked out of the RAID member, resulting in RAID failure and the entire RAID All data on is lost and inaccessible

Method used

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  • Method and device for achieving RAID reconstitution
  • Method and device for achieving RAID reconstitution
  • Method and device for achieving RAID reconstitution

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Embodiment Construction

[0047] In order to make the purpose, technical solution and advantages of the present invention more clear, the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other.

[0048] figure 1 Realize the flow chart of the method for the reconstruction of redundant array of disks (RAID) for the present invention, in the process that failure disk causes RAID reconstruction, such as figure 1 shown, including the following steps:

[0049] Step 101: identify that there is a bad sector in the disk in the RAID group, lock the sectors of other disks in the same RAID group except the disk where the bad sector is located and cause the RAID to be reconfigured Sector of the failed disk.

[0050] Further, the method also includes before: identifying whether ...

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Abstract

The invention discloses a method and a device for achieving RAID reconstitution. The method comprises the following steps: identifying that a bad sector exists in a disk of a RAID group; locking sectors of other disks except the disk where the bad sector locates in the RAID group whose location is the same as that of the bad sector, and sectors of the fault disk which causes a RAID reconstitution; respectively obtaining a first data in the sectors of the locked other disks and a second data in the sectors of the locked fault disk; verifying the data in the bad sector based on the obtained first data and second data as well as the priority of the RAID group; storing the verified data into a preserved disk sector in the disk where the bad sector locates, verifying a proof test value based on the verified data and the obtained first data, and storing the proof test value into a sector of a backup disk, wherein the location of the sector of the backup disk is the same as that of the bad sector. The technical scheme increases the efficiency of RAID reconstitution.

Description

technical field [0001] The invention relates to disk storage technology, in particular to a method and device for realizing reconfiguration of redundant array of disks (RAID). Background technique [0002] The storage system is the cornerstone of the entire IT system and the basic platform on which IT technologies exist and function. In the earlier form of storage, the storage device (usually a disk) and other hardware of the application server are directly installed in the same chassis, and the storage device is exclusively used by the application server. [0003] Redundant Array of Inexpensive Disks (RAID, Redundant Array of Inexpensive Disks) technology forms a logical hard disk with individual disks in different combinations, thereby improving the performance of disk reading and data security. Among them, different combinations It is identified by the RAID level. After continuous development, RAID technology now has six standard RAID levels ranging from RAID0 to RAID5....

Claims

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Application Information

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IPC IPC(8): G06F3/06
CPCG06F3/0689
Inventor 刘希猛罗东华
Owner INSPUR BEIJING ELECTRONICS INFORMATION IND
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