Patent · US Active

Replication and restoration

US9189495B1 · kind B1 · utility

20Cited by

3References

18Claims

0Family size

Assignee

EMC Corporation · US

Inventors

Jeffrey Douglas Hughes · Seattle, US
Harsha Mahuli · Sammamish, US
Darrick Peter Lew · Seattle, US

Key dates

Filing date	Jun 28, 2012
Grant date	Nov 17, 2015
Priority date	—
Expiry date	Nov 3, 2033

Classification

Technology area (CPC G)Physics
CPC primaryG06F16/1844
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

Embodiments are directed towards replication and restoration of file system objects stored on file system clusters. Modified file system objects may be tracked using a snapshot tracking file corresponding to a snapshot. The snapshot tracking file may be employed to generate a snapshot change set. The snapshot change set may be used to restore a file system cluster to a version corresponding to a snapshot by reversing the changes in the snapshot change set. Also, a snapshot change set may be used to replicate file system objects by committing the included changes on another file system cluster. If a primary file system cluster becomes unavailable the file system may failover to the secondary file system cluster. If the primary file system cluster later becomes available it may be restored by using snapshot change sets generated on the secondary file system cluster.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.