公开(公告)号：US20220027326A1

公开(公告)日：2022-01-27

申请号：US17279606

申请日：2019-03-29

Applicant: SUN YAT-SEN UNIVERSITY

Inventor： Yutong LU ,  Zhiguang CHEN ,  Nong XIAO ,  Fang LIU

IPC: G06F16/185 ,  G06F16/13

Abstract: A metadata management method, system and medium are provided. All directories and files in a file system are organized in a tree structure, and all directories and subfiles under a single directory are saved as a whole on a continuous address space of an underlying storage device in the order of creation in sequence. When metadata is updated, update operations on all subdirectories/subfiles under a directory are appended to the tail of the directory in the form of log in order, so that each metadata operation triggers only one IO request. In the process of metadata retrieval, parsing a subdirectory under a parent director requires reading all data on the continuous address space corresponding to the parent directory, and then searching for a match by means of multiple acceleration methods.