Methods and structure for using region locks to divert I/O requests in a storage controller having multiple processing stacks
US9268695B2 · kind B2 · utility
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13Claims
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Key dates
| Filing date | Dec 12, 2012 |
| Grant date | Feb 23, 2016 |
| Priority date | — |
| Expiry date | Jan 20, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F12/14
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Methods and structure within a storage controller for using region locks to efficiently divert an I/O request received from an attached host system to one of multiple processing stacks in the controller. A region lock module within the controller allows each processing stack to request a region lock for a range of block addresses of the storage devices. A divert-type lock request may be established to identify a range of block addresses for which I/O requests should be diverted to a particular one of the multiple processing stacks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.