Optimizing snapshot creation
US11354268B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 8, 2020 |
| Grant date | Jun 7, 2022 |
| Priority date | — |
| Expiry date | Aug 1, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F13/20
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Creating snapshot data sets for a plurality of logical devices of a storage system includes marking an initial set of the logical devices for a snapshot in response to each of the initial set of logical devices having been modified since obtaining a previous snapshot data set, suspending I/O operations, marking an additional set of the logical devices for a snapshot in response to each of the additional set of logical devices having been modified prior to suspending I/O, performing a snapshot of the logical devices in the initial set of logical devices and in the additional set of logical devices, and resuming I/O operations. Pointers to snapshots for the snapshot data set may be placed in a table that includes a plurality of entries for a plurality of snapshot data sets. None of the additional set of logical devices may be part of the initial set of logical devices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.