Data flashing method, device and apparatus of storage system and readable storage medium

A technology of storage system and writing device, which is applied in the direction of electric digital data processing, input/output process of data processing, redundancy in operation, data error detection, etc. It can solve the problems of data loss and affecting the normal operation of the system, etc. Achieve the effect of reducing data loss and improving reliability

Inactive Publication Date: 2020-05-05
北京浪潮数据技术有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, if a BBU failure occurs and the system does not have time to persist the data to the disk, even with dua

Method used

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  • Data flashing method, device and apparatus of storage system and readable storage medium
  • Data flashing method, device and apparatus of storage system and readable storage medium
  • Data flashing method, device and apparatus of storage system and readable storage medium

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[0034] The core of this application is to provide a storage system data flashing method, which can effectively improve the reliability of the storage system; another core of this application is to provide a storage system data flashing device, equipment and a readable storage system medium.

[0035] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0036] Please refer to figure 1 , figure 1 The flow char...

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Abstract

The invention discloses a data flashing method of a storage system. When transaction log synchronization is carried out on metadata, a synchronously written transaction log is asynchronously written into a disk; namely, cache data which do not fall into the disk is written into the disk; on the premise of double-control transaction log backup, an asynchronous overwriting log mode is added to improve the reliability of the storage system. Under the condition of writing the asynchronous log, even if more serious faults happen, memory data cannot be written into a disk in time, part of data and even all data can still be effectively recovered when the controller is recovered, the situation of data loss under extreme conditions is reduced, and the reliability of the storage system can be effectively improved under the situation that IO efficiency is not greatly affected. The invention furthermore provides a data flashing apparatus and device of the storage system and a readable storage medium, which have the above beneficial effects.

Description

technical field [0001] The present application relates to the technical field of data storage, and in particular to a storage system data flashing method, device, equipment and a readable storage medium. Background technique [0002] Metadata transaction log synchronization means that during the IO process of the storage system, the metadata that has been generated will be used for transaction operations, and transaction logs between dual controllers will be synchronized. When a power failure or other failure occurs, the transaction log will be Persist to the disk. When the controller is powered on or restored, the transaction log information will be reloaded from the disk to redo the transaction log, thereby ensuring the data consistency of the storage system. [0003] The traditional transaction log can only ensure that the data in the memory is written to the disk at the time of the fault when the BBU (battery backup unit, backup battery unit) is not faulty, and the data ...

Claims

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Application Information

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IPC IPC(8): G06F11/14G06F3/06
CPCG06F11/1456G06F11/1469G06F11/1471G06F3/0614G06F3/065G06F3/0679
Inventor 甄凤远
Owner 北京浪潮数据技术有限公司
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