Disk drive modifying metadata cached in a circular buffer when a write operation is aborted
US8756361B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 22, 2011 |
| Grant date | Jun 17, 2014 |
| Priority date | — |
| Expiry date | Dec 16, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2220/2516
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A disk drive is disclosed comprising a head actuated over a rotatable disk. A write operation is processed to write data on the disk using the head, wherein prior to writing the data on the disk, logical-to-physical mapping information is stored in a circular buffer, wherein the logical-to-physical mapping information identifies locations on the disk to write the data. A plurality of metadata files are written on the disk using the head, wherein the plurality of metadata files are interspersed with the data on the disk and each of the metadata files includes contents of the circular buffer at a time the metadata file is written on the disk. When the write operation is aborted, the logical-to-physical mapping information in the circular buffer is modified to identify the locations on the disk actually written.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.