Input/output (I/O) fencing with persistent reservation information in shared virtual storage environments
US10620856B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 18, 2018 |
| Grant date | Apr 14, 2020 |
| Priority date | — |
| Expiry date | Jun 30, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2009/45579
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Example methods are provided for a first host to perform Input Output (I/O) fencing in a shared virtual storage environment. One example method may comprise determining that is required to fence off a second node from a first virtual disk, and obtaining persistent reservation information associated with the first virtual disk. The persistent reservation information may include a first key associated with a first path between a first node and the first virtual disk, and a second key associated with a second path between the second node and the first virtual disk. The method may also comprise identifying the second key associated with the second path; and blocking I/O access by the second node to the first virtual disk using the second key associated with the second path, thereby fencing off the second node from the first virtual disk.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.