Metadata update journal destaging with preload phase for efficient metadata recovery in a distributed storage system
US11010251B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 10, 2020 |
| Grant date | May 18, 2021 |
| Priority date | — |
| Expiry date | Mar 10, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/1815
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
At least one processing device is configured to detect a failure event impacting at least a first storage node of a distributed storage system, and responsive to the detected failure event, to initiate a metadata recovery process for at least the first storage node. In conjunction with the metadata recovery process, destaging of a metadata update journal of the first storage node is performed, the destaging of the metadata update journal of the first storage node being performed in multiple phases, including at least a preload phase in which, for each of a plurality of pages required for the destaging of the metadata update journal, one or more address locks are obtained for the page, the page is preloaded into a memory of the first storage node from persistent storage accessible to the first storage node, and the one or more address locks are released, and an update and write phase.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.