Copying point-in-time data in a storage to a point-in-time copy data location in advance of destaging data to the storage
US10754730B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 6, 2018 |
| Grant date | Aug 25, 2020 |
| Priority date | — |
| Expiry date | Sep 17, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/462
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Provided are a computer program product, system, and method for copying point-in-time data in a storage to a point-in-time copy data location in advance of destaging data to the storage. A point-in-time copy is created to maintain tracks in a source storage unit as of a point-in-time. A source copy data structure indicates tracks in the source storage unit to copy from the storage to a point-in-time data location. An update to write to a source track is received and a determination is made as to whether the source copy data structure indicates to copy the source track from the storage to the point-in-time data location. The update is written to a cache. A copy operation is initiated to copy the source track from the storage to the point-in-time data location asynchronous before the source track is destaged from the cache to the storage unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.