Sharing private space among data storage system data rebuild and data deduplication components to minimize private space overhead
US10769020B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 31, 2019 |
| Grant date | Sep 8, 2020 |
| Priority date | — |
| Expiry date | Jan 31, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2201/82
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Techniques for sharing private space among storage system components. The techniques include determining an amount of private space for each of a rebuild component, an FSCK component, and a deduplication component, reserving private space equal to the sum of (i) the amount determined for the rebuild component and (ii) the maximum of the amounts determined for the FSCK and deduplication components, and allocating the remaining amount of storage space as user space. If a storage device fails, then the rebuild component rebuilds the failed drive data on a hot spare drive in the private space reserved for the rebuild component. If data files become corrupted, then the FSCK component performs offline recovery operations using the private space for the hot spare drive. If such private space for the hot spare drive is unavailable, then the FSCK component performs offline recovery operations using the private space reserved for the deduplication component.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.