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Systems and methods for rebalancing striped information across multiple storage devices

A storage device, striped technology, used in the input/output process of data processing, instrumentation, input/output to record carriers, etc.

Pending Publication Date: 2020-12-04
华睿泰科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, expanding and / or reducing the number of physical storage devices in a data storage device array may require a "relayout" process

Method used

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  • Systems and methods for rebalancing striped information across multiple storage devices
  • Systems and methods for rebalancing striped information across multiple storage devices
  • Systems and methods for rebalancing striped information across multiple storage devices

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Embodiment Construction

[0023] The present disclosure generally relates to systems and methods for rebalancing striped information across multiple storage devices. Provided systems and methods can rebalance striped information across multiple storage devices by performing optimized logical striping, where logical striping can include balancing across physical stripes before changing the number of multiple storage devices Subvolumes to transfer. In embodiments, the disclosed technology may be utilized in conjunction with cloud-based storage.

[0024] In doing so, the systems and methods described herein may, in some examples, improve the functionality of computing devices by automatically (re)balancing striped information across multiple storage devices, thereby enabling cost-effective storage management. Additionally, in some examples, the systems and methods described herein can save power by reducing the amount of data to be transferred. The presented methods also may not require the use of tempo...

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PUM

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Abstract

The disclosed computer-implemented method for rebalancing striped information across multiple storage devices may include (1) allocating "Y" contiguous storage spaces on "Y" physical devices, (2) dividing, at the computing device, the "Y" continuous storage spaces into "N" subvolumes, (3) allocating the "N" subvolumes to "X" logical stripes, (4) allocating each of the first "Y" logical stripes toa respective physical stripe in each of the "Y" physical stripes, (5) distributing remaining subvolumes to respective logical stripes, and (6) allocating the respective subvolumes across the "Y" physical stripes. Various other methods, systems, and computer-readable media are also disclosed.

Description

Background technique [0001] An array of data storage devices may store data in stripes. Striping is a technique of segmenting data and storing different data segments on different physical storage devices in an array of data storage devices. Striping improves I / O performance by enabling simultaneous access to data stored on different physical storage devices. However, expanding and / or reducing the number of physical storage devices in an array of data storage devices may require performing a "relayout" process. The re-layout process serially moves the striped data from the initial set of physical storage devices to the temporary storage device, and then rewrites the striped data from the temporary storage device to the revised set of physical storage devices. The rearrangement process moves large amounts of data serially through the required temporary storage devices. For example, adding a new stripe to a 1200GB striped local volume could take 2.5 hours to complete using co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/06
CPCG06F3/0607G06F3/061G06F3/0665G06F3/064G06F3/067G06F3/0689G06F3/0631G06F3/0653G06F3/0683
Inventor P·载格德
Owner 华睿泰科技有限责任公司