Preserving file handles when moving file system operation between storage processors
US9330103B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 28, 2014 |
| Grant date | May 3, 2016 |
| Priority date | — |
| Expiry date | Oct 7, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/166
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A technique for managing access to files by different data storage systems includes a data storage system generating an E-FSID (export FSID) for a file system in addition to a conventional FSID and providing the E-FSID in file handles that the data storage system generates for providing clients with access to the file system. The E-FSID is shared between/among different data storage systems, with each data storage system including data for cross-referencing the E-FSID to a respective local FSID for the file system. Because the E-FSID for a file is the same across different data storage systems, file handles continue to work after failover, migration, and other transitions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.