Title:
DATA STORAGE METHOD AND SUBSYSTEM, DISTRIBUTED STORAGE SYSTEM, AND STORAGE MEDIUM
Document Type and Number:
WIPO Patent Application WO/2024/037104
Kind Code:
A1
Abstract:
The present application provides a data storage method and subsystem, a distributed storage system, and a storage medium. The method comprises: synchronizing a write operation log received by a master logic node to all slave logic nodes; when it is determined that the master logic node receives a log synchronization failure message, determining an anomalous logic node corresponding to the message, wherein the log synchronization failure represents data missing on a target physical storage node corresponding to the anomalous logic node; generating missing data on the basis of a preset erasure code and data logs of remaining slave logic nodes other than the anomalous logic node and the master logic node, each data log being used for recording data written onto a physical storage node corresponding to a logic node; and performing data recovery on the target physical storage node according to the missing data. According to the present application, the data loss detection and the data writing have a dependency relationship, it is unnecessary to use a service node to implement scheduling and recovery, the problem that recovery data is lost when a server is down is avoided, and the recovery process complexity is effectively reduced.
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Inventors:
YUAN DONGPING (CN)
Application Number:
PCT/CN2023/097138
Publication Date:
February 22, 2024
Filing Date:
May 30, 2023
Export Citation:
Assignee:
CHONGQING UNISINSIGHT TECH CO LTD (CN)
International Classes:
G06F3/06
Foreign References:
| CN115344211A | 2022-11-15 | |||
| CN106662983A | 2017-05-10 | |||
| CN112559140A | 2021-03-26 | |||
| CN110865903A | 2020-03-06 | |||
| CN114880165A | 2022-08-09 | |||
| US9361306B1 | 2016-06-07 |
Attorney, Agent or Firm:
CHOFN INTELLECTUAL PROPERTY (CN)
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