Efficient cloning of logical storage devices
US11237916B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 22, 2019 |
| Grant date | Feb 1, 2022 |
| Priority date | — |
| Expiry date | Dec 6, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/261
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A no-copy clone of a logical storage unit is created. A define process is initiated for defining a target logical storage unit as the clone before activation of the target logical storage unit. By initiating the define process before activating the logical storage unit, there is a greater likelihood that, when a write operation is received for a data portion on the source logical storage unit or target logical storage unit after activation of the target LSU, the data portion will already be defined and not need to be defined when performing the write operation. When a write operation is received at the source logical storage unit, if the target logical storage unit is not active yet, the data of the write operation may be written to an allocated physical location for the data portion shared between the source and target logical storage units without updating any clone metadata.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.