Using path quarantining to identify and handle backend issues
US11561702B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 30, 2020 |
| Grant date | Jan 24, 2023 |
| Priority date | — |
| Expiry date | Aug 5, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2201/88
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A technique involves, in response to encountering a predefined number of consecutive I/O errors using a drive path to a storage drive, transitioning the drive path from online to quarantined to temporarily deny further I/O operations from being processed using the drive path. The technique further involves starting a quarantine timer that defines a quarantine time period. The technique further involves performing an update operation that updates the drive path. The update operation (i) changes the drive path from quarantined to removed to continue denying further I/O operations from being processed using the drive path when a removal notification is received before the quarantine time period expires, and (ii) changes the drive path from quarantined to back to online to allow further I/O operations to be processed using the drive path when a removal notification is not received before the quarantine time period expires.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.