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Appropriate conversion of small-panel storage pools to large-panel storage pools

A storage pool and conversion technology, applied in the direction of instruments, input/output to record carriers, calculations, etc., can solve problems such as time-consuming and inefficient, and achieve the effects of improving operational efficiency, reducing network traffic, and reducing performance delays

Pending Publication Date: 2022-04-15
IBM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the existing process implemented by a given pool for converting extent sizes is time consuming and inefficient

Method used

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  • Appropriate conversion of small-panel storage pools to large-panel storage pools
  • Appropriate conversion of small-panel storage pools to large-panel storage pools
  • Appropriate conversion of small-panel storage pools to large-panel storage pools

Examples

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Embodiment Construction

[0017] The following description discloses several preferred embodiments of systems, methods and computer program products for migrating data from a pool of large extents to a pool of small extents. Various embodiments provide a method for creating a correspondence between logical volume extents of a volume and physical offset locations within block extents of a source storage pool, and utilizing the correspondence to store data from the source One or more chunks of the pool are migrated to one or more chunks of the destination storage pool.

[0018] The following description is for the purpose of illustrating the general principles of the invention and is not intended to limit the inventive concepts claimed herein. Furthermore, certain features described herein can be used in each of the various possible permutations and combinations with other described features.

[0019] Unless otherwise expressly defined herein, all terms are to be given their broadest possible interpreta...

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Abstract

A computer-implemented method includes identifying a request to translate an existing storage pool having a smaller first chunk size to an expected storage pool having a larger second chunk size. Reels in an existing storage pool are reordered such that boundaries between physical tile disks of a volume and tile disks of an intended storage pool are aligned. Each of the blocks in the existing storage pool is transitioned from the first block disk size to a second block disk size. Thereafter, for each of the volumes: a temporary pause / lock is performed on the VST entry corresponding to the given volume, and an existing structure associated with the VST entry corresponding to the first block disk size is removed. In addition, the VST entry is populated with a new structure corresponding to the second block disk size.

Description

technical field [0001] The present invention relates generally to data migration and / or conversion, and more particularly to the proper conversion of data from small-extent storage pools to large-extent storage pools. Background technique [0002] Extent pools in storage products can implement different extent sizes. For example, an extent size of 1GB may be implemented for a large extent pool, and an extent size of 16MB may be implemented for a small extent pool. Some workloads may perform better in small-extent pools when compared to large-extent pools. Thus, in some cases, a particular extent size is chosen by the client for a given storage pool, but over time factors change such that different extent sizes are expected. For example, in some situations, a storage system may experience an increase in demand for physical storage such that a smaller extent-sized storage pool is converted to a larger extent-sized storage pool. [0003] However, the existing process impleme...

Claims

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Application Information

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IPC IPC(8): G06F3/06
CPCG06F3/0685G06F3/0644G06F3/0604G06F3/0673
Inventor C·哈迪K·A·内尔森M·卡洛斯
Owner IBM CORP
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