System and method for managing I/O errors in a storage environment employing asymmetric distributed block virtualization
US7293191B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 26, 2004 |
| Grant date | Nov 6, 2007 |
| Priority date | — |
| Expiry date | Mar 15, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/2084
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system for managing input/output (I/O) errors in a storage system employing asymmetric distributed block virtualization includes a volume server, a plurality of volume clients, and one or more physical block devices. The volume server aggregates storage in the physical block devices into a logical volume and makes the logical volume accessible to the volume client. A designated route may be used to send I/O requests from the volume client to a physical block device during normal operation. If the volume client loses connectivity on the designated route, the volume client may route an I/O request to the physical block device via an alternate route. In one specific embodiment, the volume client may route an I/O request to the physical block device via the volume server.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.