Migrating control of a multi-path logical device from a current MPIO driver to a target MPIO driver
US10754572B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 9, 2018 |
| Grant date | Aug 25, 2020 |
| Priority date | — |
| Expiry date | May 2, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L67/1097
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An apparatus in one embodiment comprises a host device that includes a set of input-output (IO) queues and a current multi-path input-output (MPIO) driver configured to select IO operations from the set of IO queues for delivery to the storage system. The current MPIO driver is configured to group a plurality of paths from the host device to a logical unit number of the storage system into a multi-path logical device. The host device is configured to install a target MPIO driver and to migrate control of the multi-path logical device to the target MPIO driver from the current MPIO driver where the migration comprises transferring IO entry points of the multi-path logical device from the current MPIO driver to the target MPIO driver. The host device is configured to deliver IO operations selected by the target MPIO driver to the storage system using the multi-path logical device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.