Mapper tree with super leaf nodes
US11068455B2 · kind B2 · utility
72Cited by
6References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 26, 2019 |
| Grant date | Jul 20, 2021 |
| Priority date | — |
| Expiry date | Jan 9, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/2228
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A mapper tree for a logical volume is provided by storing, in each leaf node of the mapper tree, pointers to pages of non-volatile storage that store host data written to corresponding pages within a segment of the logical address space of the logical volume that corresponds to the leaf node. In response to receiving an initial write operation directed to a segment of the logical address space of the logical volume for which no leaf node currently exists in the mapper tree, a representation of a new leaf node is added to a super leaf node in the mapper tree that efficiently stores representations of multiple leaf nodes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.