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data update technology

A data update and data technology, applied in the storage field, can solve problems such as poor update performance and write amplification, and achieve the effect of improving update performance and reducing write amplification problems

Active Publication Date: 2021-02-23
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This update method will actually write more data than needs to be written, resulting in write amplification (Write Amplification, WA) of the system, making the update performance of the system relatively poor

Method used

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Embodiment Construction

[0035] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be described below in conjunction with the drawings in the embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them.

[0036] figure 1 It is a schematic structural diagram of a storage system provided by an embodiment of the present invention. Such as figure 1 As shown, the storage system 100 may include a management node 110 and a plurality of storage nodes (eg, storage nodes 112, 114, 116, and 118). The storage system 100 can communicate with a plurality of application servers (eg, application servers 102 , 104 and 106 ) through a communication network 108 . The communication network 108 may include cables, wireless communication connections, and the communication network 108 may also include Ether...

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Abstract

A data update technology. A storage system (100) applying the technology includes a management node (110) and a plurality of storage nodes (112, 114, 116, 118). The multiple storage nodes (112, 114, 116, 118) form a redundant array of disks RAID. In the storage system (100), when the management node (110) determines that the write request it receives does not update all the data in the entire stripe, the management node (110) directly updates the data obtained according to the data to be written The data pieces are respectively sent to corresponding storage nodes (112, 114, 116, 118). The storage nodes (112, 114, 116, 118) that receive the updated data slices do not directly update the data blocks stored in their external storage devices according to the updated data slices they receive, but store the updated data slices in their non-volatile volatile memory in NVM. The data update method can reduce the write amplification problem in the stripe update process, and improve the update performance of the storage system (100).

Description

technical field [0001] The invention relates to the field of storage technology, in particular to a data update technology. Background technique [0002] In a storage system, data reliability is usually guaranteed based on a reliability technology of error correcting code (error correcting code, ECC) coding. The reliability technology based on EC coding is to add redundant bits by coding the data to be stored. When a storage device fails, the data of the failed device is recovered through the redundancy bit. Redundant Array of Independent Disks (RAID), also known as redundant array of inexpensive disks (Redundant Array of Inexpensive Disks, RAID), disk array for short. The principle is to combine multiple relatively cheap hard disks to form a hard disk array group, so that the performance can reach or even exceed that of an expensive hard disk with huge capacity, and cooperate with the design of scattered data arrangement to improve data security. With the development of ...

Claims

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Application Information

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IPC IPC(8): G06F3/06
CPCG06F3/0619G06F3/0604G06F3/0644G06F3/0631G06F3/0688G06F11/1448G06F3/06G06F3/0614G06F3/065G06F3/067G06F3/061G06F3/0656G06F3/0689G06F12/0868G06F2212/1016G06F2212/222G06F2212/281
Inventor 于群徐君王元钢
Owner HUAWEI TECH CO LTD
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