Using a per file activity ratio to optimally relocate data between volumes
US8732217B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 30, 2009 |
| Grant date | May 20, 2014 |
| Priority date | — |
| Expiry date | Apr 1, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F3/0649
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for identifying data for relocation in a multivolume file system. The method includes generating a file location map, the file location map containing a list of the locations of files that occupy space on each of a plurality of volumes of the file system, wherein The file system comprising least a first volume and a second volume. The method further includes updating the file location map in accordance with changes in a file change log for the file system, and identifying data residing on the first volume of the file system by scanning the file location map. Using the identified data, a ratio of per-file activity during a first time period relative to overall file system activity over a second time period is calculated to derive a file activity ratio for each of the files of the identified data. Files are then selected for relocation based on the file activity ratio.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.