公开(公告)号：US20200226100A1

公开(公告)日：2020-07-16

申请号：US16831005

申请日：2020-03-26

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yong LI ,  Zhongbing YANG ,  Yan TU

IPC: G06F16/14 ,  G06F16/11 ,  G06F16/182 ,  G06F16/2455

Abstract: In the field of data storage, a metadata query method and an apparatus are disclosed, to improve metadata searching efficiency. The method is applied to a linked snapshot, and includes: receiving a metadata query request; obtaining a first time sequence identifier from the first snapshot volume based on the volume identifier of the first snapshot volume; querying historical index information based on the data block identifier and the first time sequence identifier; and when the data block identifier exists, and the first time sequence identifier falls within a corresponding query time sequence interval, obtaining a corresponding target volume identifier from the historical index information, and obtaining, from a second snapshot volume indicated by the target volume identifier, address metadata corresponding to the data block identifier (304).