Method and apparatus for virtualization of a file system, data storage system for virtualization of a file system, and file server for use in a data storage system

摘要

The method performed by the apparatus includes interconnecting a first file system managing unit 310 between the plurality of client computers 100 and the second file system managing unit 410, creating a first directory /root in a first file system managed by the first file system managing unit 310, associating a first directory /root of the second file system with the first directory /root of the first file system, enabling on-demand virtualization of the second file system by the first file system managing unit 310 based on client requests received from the client computers 100 at the first file system managing unit 310 and based on the association between the first directory of the first file system and the first directory of the second file system, and enabling indirect client access to the second file system through the first file system.

主权项

1. An apparatus being connectable to a computer and another apparatus,
the apparatus being configured to manage a first file system and to create a first structure information of the first file system linking between at least one first parent directory and one or more first child file system objects of the first parent directory based on a second structure information of a second file system received from the other apparatus, the second structure information linking between at least one second parent directory and one or more second child file system objects of the second parent directory existing in the second file system managed by the other apparatus, the second parent directory being associated with the first parent directory and the one or more second child file system objects of the second parent directory being associated with the one or more second child file system objects of the second parent directory, wherein, during creating the first structure information of the first file system, the apparatus is further configured to change a first status of the at least one first parent directory of the first structure information of the first file system based on creating metadata of the one or more first child file system objects of the first parent directory in the first structure information of the first file system, the metadata of the one or more first child file system objects of the first parent directory being created based on metadata of the respective associated one or more second child file system objects of the second parent directory of the second structure information of the second file system received from the other apparatus.