Handling metadata corruption to avoid data unavailability
US10860483B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 30, 2019 |
| Grant date | Dec 8, 2020 |
| Priority date | — |
| Expiry date | Apr 30, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/608
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A technique handles metadata corruption to avoid data unavailability. The technique involves performing metadata evaluation operations on metadata describing pages of written data in a data-log that holds data en route to volumes in secondary storage. The technique further involves, while results of the metadata evaluation operations indicate that there is no corrupt metadata, flushing the pages of written data from the data-log to the volumes in the secondary storage. The technique further involves, in response to a result of a particular metadata evaluation operation indicating that metadata for a particular page of written data in the data-log is corrupt, quarantining the particular page of written data from the data-log to a containment cache to enable further flushing of other pages of written data from the data-log to the volumes in the secondary storage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.