Synchronized change tracking in data storage volumes
US9875041B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 30, 2014 |
| Grant date | Jan 23, 2018 |
| Priority date | — |
| Expiry date | Oct 9, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/3037
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Various examples are directed to systems and methods for backing up data. A tracking utility may receive a start request and then receive a write request directed towards the first volume. An address of the block of the volume to be modified by the write request may be recorded to a current changes list. The tracking utility may also receive a first lock request, wherein the lock request comprises an instruction to place the volume in a read-only mode. Upon receiving the first lock request, the tracking utility may copy the current changes list to a frozen changes list and clear the current changes list. Upon receiving a second lock request, the tracking utility may merge the current changes list and the frozen changes list.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.