Method, device and system for processing storage hotspots in distributed storage

A distributed storage and processing storage technology, applied in the storage field, can solve problems such as the inability to eliminate physical disk hotspots, and achieve the effect of dynamic migration and reduction of hotspots

Inactive Publication Date: 2009-11-18
HUAWEI DIGITAL TECH (CHENGDU) CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In the process of realizing the present invention, the inventor found that there are at least the following problems in the prior art: the prior art uses multi-path software only to balance the access paths, but cannot eliminate the hot spots on the physical disk,

Method used

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  • Method, device and system for processing storage hotspots in distributed storage
  • Method, device and system for processing storage hotspots in distributed storage
  • Method, device and system for processing storage hotspots in distributed storage

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Embodiment Construction

[0027] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0028] Please refer to figure 2 , is a schematic diagram showing the structure of the mapping table of the location of the logical unit of the physical disk in the embodiment of the present invention. In the embodiment of the present invention, the storage system includes multiple physical disks, and each disk includes multiple logical units. A mapping table is used to track and maintain the physical The position of each logical unit of the disk, in this method, the position of each logical unit of the physical disk is not fixed, and can be adjusted as required by modifying the form of the mapp...

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Abstract

The embodiment of the invention provides a method for processing storage hotspots in a distributed storage, which comprises the following steps: obtaining the sum of visit frequency in logical units of a controller; judging whether the obtained sum of visit frequency is larger than presetting visit frequency threshold value or not; if the obtained sum of visit frequency is larger than presetting visit frequency threshold value, transferring the logical unit with highest visit frequency in the controller to a controller with lowest sum of visit frequency. In the embodiment, judging that the obtained sum of visit frequency of the logical units is larger than presetting visit frequency threshold value, the logical unit with highest visit frequency in the controller is transferred into the controller with lowest sum of visit frequency, thus reducing the sum of visit frequency of the logical units in the controller, realizing dynamic migration of the logical units in the controller, and effectively reducing the hotspots in physical disks.

Description

technical field [0001] The present invention relates to the field of storage technology, in particular to a method, device and system for processing storage hotspots in distributed storage. Background technique [0002] In modern storage systems, different storage objects have different access frequencies, and storage objects with high access frequencies are called hotspots. When access is too concentrated on certain devices and causes delays in the response time of the entire system to users, then this device becomes a hotspot of the storage system. In order to enable the system to respond to user requests in a timely manner, hot spots must be eliminated, thereby eliminating system access bottlenecks. [0003] In distributed storage systems, especially in parallel disk array systems, storage hotspots have always been a criticism of storage systems. figure 1 It is a typical parallel controller topology based on distributed architecture, in which the host can access the vol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/06H04L29/08
Inventor 罗姣林
Owner HUAWEI DIGITAL TECH (CHENGDU) CO LTD
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