Transparent recovery of emulated storage device after a failure
US12248372B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 19, 2023 |
| Grant date | Mar 11, 2025 |
| Priority date | — |
| Expiry date | Sep 6, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2201/805
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In one embodiment, a system includes a storage device controller including a first controller to read commands from a submission queue stored in a shared memory, provide the commands to a second controller, and write completion notices received from the second controller to a completion queue in the shared memory, and the second controller to receive the commands from the first controller, perform storage operations with a non-volatile memory responsively to receiving the commands, generate the completion notices responsively to performing the storage operations, provide the completion notices to the first controller, write recovery data about the commands and the completion notices to a persistent memory, and recover from a failure responsively to retrieving the recovery data from the persistent memory.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.