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Method and device for processing hot removal of magnetic disk

A processing method and disk technology, applied in the computer field, can solve the problems of event and state logic processing, weak disaster recovery ability and other problems, and achieve the effect of enhancing scalability and flexibility, and improving timely recovery ability.

Active Publication Date: 2010-04-28
ZTE CORP
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Problems solved by technology

[0005] In view of this, the present invention provides a processing method and device for hot-unplugging a disk, which is used to solve the problems caused by the system’s failure to logically process the events and states caused by the hot-unplugging of the disk after the hot-unplugging of the disk in the prior art. The problem of weak timely recovery from disasters

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  • Method and device for processing hot removal of magnetic disk
  • Method and device for processing hot removal of magnetic disk
  • Method and device for processing hot removal of magnetic disk

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Embodiment Construction

[0020] Functional Overview

[0021] In multiple controllers, after the same disk is pulled out, each controller will detect that the disk is pulled out and notify the logical device layer. Therefore, when a disk is pulled out from the disk array being read and written, the logical device driver layer will receive three types of disk failure reports. In order to prevent the logic device from processing these three types of disk failure reports multiple times and affect the processing results of the logic device, the embodiment of the present invention provides a processing solution for hot disk removal, which is used in a multi-controller disk array. After a disk is removed from the array in the read-write state, the disk hot-removal event is processed. In the embodiment of the present invention, by setting the membership state and the mutual exclusion lock mechanism of the logical device, the problem that the logical device processes the above three kinds of disk failure repo...

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Abstract

The invention discloses a method and a device for processing hot removal of a magnetic disk. The method is used in a magnetic disk array of a multi-controller, and when a magnetic disk is removed from the array in a reading-writing state, the hot removal of the magnetic disk is processed. The method comprises the following step that: after a logic equipment drive layer receives a magnetic disk failure report, and under conditions that the magnetic disk failure report is confirmed to come from a main controller and the current logic equipment is in a reconfiguring state, judging whether the current logic equipment is at a level of redundant arrays of inexpensive magnetic disks RAID; if so, setting the magnetic disk group member corresponding to the currently removed magnetic disk in a failure state, and continuing the reconfiguring operation; and otherwise, setting all logic equipment of the magnetic disk group member to which the currently removed magnetic disk belongs in a failure state, stopping the reconfiguring operation, and sending the state information of the current logic equipment to an opposite terminal controller. According to the device, the restoring ability and the flexibility of the magnetic disk array system on an accident can be improved.

Description

technical field [0001] The invention relates to the technical field of computers, in particular to a processing method and device for hot unplugging a disk in a multi-controller disk array. Background technique [0002] Disk Array (Disk Array) is a technology that controls the interconnection of multiple hard disks by the hard disk controller, synchronizes the reading and writing of multiple hard disks, reduces errors, and increases efficiency and reliability. Among them, a disk array in which multiple disks are controlled by two controllers is called a dual-controller disk array. Generally, a disk array refers to a Redundant Array of Inexpensive Disks (RAID for short), among which RAID is a theoretical standard for the technical realization of a disk array, and its purpose is to reduce errors and improve the performance and reliability of the storage system. . Specifically, RAID is a combination of multiple independent hard disks (physical hard disks) in different ways to...

Claims

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Application Information

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IPC IPC(8): G06F3/06
Inventor 甘春闰
Owner ZTE CORP
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