File system migration in storage system
US8117151B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 8, 2010 |
| Grant date | Feb 14, 2012 |
| Priority date | — |
| Expiry date | Jan 8, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/1827
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In a cluster type NAS, it is necessary to copy file data between disk devices of servers upon migration of a file system or a part of the file system. A server includes a control table for managing a file system or a part of the file system, and a mapping table for managing a relation between a logical device of a disk subsystem and a logical unit recognized by a server, and in response to an instruction to execute migration of the file system from a first server to a second server, the mapping table is referenced to send an instruction to update the relation between the logical device and the logical unit to the second server, and the second server newly recognizes a logical unit and updates a management server identifier of the control table.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.