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Method, device and computer readable medium for managing storage system

A storage system and equipment technology, applied in computing, data processing input/output process, electrical digital data processing, etc., can solve problems such as interruption, slow reconstruction process, data loss, etc.

Active Publication Date: 2021-07-09
EMC IP HLDG CO LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A large number of such random I / O requests can cause the rebuild process to slow down or even break
In this case, if another disk in the disk array group also fails, it may result in data loss

Method used

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  • Method, device and computer readable medium for managing storage system
  • Method, device and computer readable medium for managing storage system
  • Method, device and computer readable medium for managing storage system

Examples

Experimental program
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Embodiment Construction

[0022] A preferred embodiment of the present disclosure will be described in more detail below with reference to the accompanying drawings. While the preferred embodiments of the present disclosure are shown in the drawings, it is understood that the present disclosure can be implemented in various forms and should not be limited by the examples set forth herein. Instead, it is provided to make the present disclosure more thoroughly and complete, and can integrate the scope of the present disclosure to those skilled in the art.

[0023] The term "comprising" and deformation thereof in this article indicates that openness include, ie "including, but not limited to,". Unless otherwise stated, the term "or" means "and / or". The term "based on" indicates "at least partially" based on ". The term "an example embodiment" and "one embodiment" represent "at least one example embodiment". The term "another example" means "at least one additional embodiment". The term "first", "second", an...

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PUM

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Abstract

Embodiments of the present disclosure relate to methods, devices, and computer-readable media for managing storage systems. The storage system includes a disk array, and the disk array includes at least one disk array group. A method includes, in response to receiving a first message indicating that a disk in the disk array has failed, determining first information about a disk array group to which the failed disk belongs. The method also includes obtaining a first number of outstanding input / output (I / O) operations in the disk array group for rebuilding the failed disk. The method also includes determining a threshold number of I / O operations available for the disk array group based on the first information and the first number. Additionally, the method includes controlling a number of I / O operations issued to the disk array group based on the threshold number.

Description

Technical field [0001] Embodiments of the present disclosure generally relate to the field of data storage, and more particularly to methods, devices, and computer readable media for managing storage systems. Background technique [0002] The storage system typically has a variety of storage components to provide a response with different response times for an input / output (I / O) request from the upper application. For example, storage systems typically have caches and multiple storage disks, and multiple storage discs can be organized in the disk array. The cache can be used to cache data such as dynamic random access memory (DRAM) to provide a faster response to I / O requests. The disc arrays are used to respond to I / O requests that are not cached in the cache, and such responses typically have a longer response time. [0003] When the disc in the disc is faulty, it is often necessary to reconstruct the faulty using the spare disc in the disk array group belonging to the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F11/20G06F3/06
CPCG06F3/0619G06F3/0689G06F11/2053G06F3/0653G06F11/1076G06F11/2094G06F2201/82G06F3/0659G06F3/061
Inventor 杨利锋徐鑫磊高健董继炳韩耕
Owner EMC IP HLDG CO LLC