Huawei Technologies Co., Limited

Zhao Zhou

Tian Zhang

Wei Cheng

Baochen Hou

Ping Zou

Zhifang Cai

A data restoration method and a related device are provided. To avoid a data loss in a cache in a process of restoring an offline RAID system, a security area is configured in a disk, where the security area is used to back up data in the cache of a RAID controller after the RAID system is offline. Therefore, when a first instruction used to indicate that the RAID system is offline is obtained, the data in the cache may be backed up to the security area. In this way, after the RAID system is restored, the RAID system can obtain backup data of the data in the cache from the security area, to avoid problems such as an operating system startup failure or a user data loss caused by the data loss in the cache.

Data restoration method and related device

The present disclosure discloses a metadata recovery method and apparatus, the method includes: searching for a target node, where the target node has been damaged or index information recorded in the target node has been lost; and recovering the index information in the target node according to index information recorded in a related node, where the related node includes a parent node and a child node that are of the target node and an adjacent node belonging to a same layer as the node, and the index information includes brother index information pointing to the adjacent node belonging to the same layer as the node, parent index information pointing to the parent node of the node, and child index information pointing to the child node of the node. The present disclosure is mainly applied to a process of virtual data recovery.

Growing community of inventors

Chengdu, China

Zhao Zhou