Method and apparatus for providing multi-path I/O in non-concurrent clustering environment using SCSI-3 persistent reserve
US6954881B1 · kind B1 · utility
74Cited by
29References
38Claims
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Key dates
| Filing date | Oct 13, 2000 |
| Grant date | Oct 11, 2005 |
| Priority date | — |
| Expiry date | Apr 11, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/2038
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for providing multi-path I/O in non-concurrent clustering environment is disclosed. Shared non-concurrent access to logical volumes through multiple paths is provided by using SCSI-3 persistent reserve commands. Open options of the operating system are mapped to SCSI persistent reserve commands to allow all of the multiple paths to register with the logical unit number of the shared storage system and to allow the second of the multiple paths to access the logical unit number of the shared storage system after obtaining a persistent reservation with the shared storage system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.