Method and system for processing failure of redundant array of independent disk controller

Abstract

The invention discloses a method and a system for processing a failure of a redundant array of independent disk (RAID) controller. The method comprises the following steps of: receiving running states which are actively registered by the RAID controller at every task execution stage of the RAID controller; judging whether the RAID controller goes wrong in the process of executing tasks according to the running states of the RAID controller; and if the RAID controller goes wrong in the process of executing the tasks, taking over the tasks and processing the failure according to a preset failure processing program. The method and the system for processing the failure of the RAID controller can independently and actively monitor a running process of the RAID controller, actively detect the failures of the RAID controller and timely process the failure. And simultaneously, when the RAID controller goes wrong, the system for processing the failure of the RAID controller can ensure that the RAID controller does not cause resource leak, module failure even shutdown and other errors due to failures.

Description

technical field [0001] The invention relates to the field of computer electronics, in particular to a fault handling method and system for a disk array controller. Background technique [0002] RAID is the abbreviation of "Redundant Array of Independent Disk", which means disk array storage system in Chinese. Disk array technology was born in 1987, proposed by the University of California, Berkeley. A simple explanation is to combine N hard disks into a virtual single large-capacity hard disk through a RAID controller. The adoption of RAID brings great benefits to the storage system (or the built-in storage of the server), among which improving the transmission rate and providing fault tolerance are the biggest advantages. [0003] The core of the disk array storage system is the disk array controller. The disk array controller is a data transmission path between the host and the disk, including interfaces for both the host and the disk array. The disk array controller p...

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Problems solved by technology

[0006] In the process of implementing the present invention, the inventor found that the reliability of the disk array controller is reduced due to its complexity. In order to ensure the long-term and efficient operation of the disk array controller, it must be equipped with fault tolerance

[0007] In the existing methods, hardware redundancy technology is usually used to improve its fault tolerance, which requires high cost

The method of ensuring its reliability through software technology is usually to integrate the fault handling logic into the business processing process of the disk array controller. When the disk array controller finds a fault, it jumps to the corresponding fault handling program branch. However, the faults that this method can handle are limited, and further increase the complexity of the disk array controller, making it difficult to maintain

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