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Automatic thin-provisioning method for optimizing space management

A technology for automatic thin provisioning and space optimization, applied in the direction of memory address/allocation/relocation, input/output to record carrier, etc. The degree of distribution, the improvement of overall performance, and the effect of strong practicability

Active Publication Date: 2015-01-28
LANGCHAO ELECTRONIC INFORMATION IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is difficult to make a trade-off between data randomness and space utilization when the storage system is applied to different scenarios

Method used

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  • Automatic thin-provisioning method for optimizing space management
  • Automatic thin-provisioning method for optimizing space management
  • Automatic thin-provisioning method for optimizing space management

Examples

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Embodiment

[0051] Such as figure 2 Shown is a schematic diagram of the space organization of the storage system. The storage pool module 20 includes three logical disks 201, 202, and 203. The logical volume module 21 includes logical volumes 211 and 212. The logical volume 211 includes data segments 2111 and 2112. Logical volume 212 includes data segments 2121 , 2122 and 2123 . Space is allocated to logical volumes in units of segments through the storage pool, which effectively reduces storage pool space mapping metadata information and reduces the complexity of metadata operations. More importantly, the data is randomly distributed on the disk in the unit of data segment size, and the data is stored approximately sequentially in the data segment, instead of the whole disk distribution in units of data blocks in the traditional thin provisioning implementation method. Space allocation is performed in units of data blocks in the logical volume, which can effectively avoid space waste, ...

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Abstract

The invention discloses an automatic thin-provisioning method for optimizing space management. The method comprises the following steps: forming a storage pool through a plurality of logical disks; forming a logic volume space by crossing the plurality of logical disks; dividing the storage pool space into two stages, namely, dividing the logical disk space into a plurality of data sections; dividing each data section into a plurality of data blocks; distributing the data sections to a logical volume through the storage pool; maintaining the distributed data section by each logical volume; distributing the space for storing the written data from the maintained data section through the logical volume while the upper application writes data to the logical volume; applying to the storage pool for distribution of a new data section through the logical volume in case that the data section maintained by the logical volume does not have enough space for distributing. Compared with the prior art, the automatic thin-provisioning method for optimizing the space management, the random distribution degree of the data in a physical disk can be effectively reduced; meanwhile, the storage space utilization rate is high; in addition, the load balance of a storing device is ensured while distributing the storage space.

Description

technical field [0001] The invention relates to the technical field of data storage, in particular to an automatic thin provisioning method with strong practicability and optimized space management. Background technique [0002] Thin provisioning technology is a new storage space configuration management technology. Compared with traditional storage space management technology, automatic thin provisioning technology can allocate storage resources on demand according to the actual storage space requirements of upper-layer applications, instead of allocating all storage resources required by applications at one time. Thin provisioning technology solves the problem of low storage space utilization in traditional storage systems, improves storage space utilization, and reduces storage system deployment and operation costs. [0003] Thin provisioning can be implemented at different levels of granularity such as logical volumes, files, and data blocks. At present, most storage sy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F12/08G06F3/06
Inventor 马春
Owner LANGCHAO ELECTRONIC INFORMATION IND CO LTD
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