Replicating a thin logical unit
US8108634B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 27, 2008 |
| Grant date | Jan 31, 2012 |
| Priority date | — |
| Expiry date | Sep 26, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/2048
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In one aspect, a method to replicate data includes determining if an I/O data block from a journal is generated by a replication initialization process; if the I/O data block from a journal is generated by the replication initialization process, determining if the I/O data block from the journal comprises zero data; if the I/O data block from the journal comprises the zero data, reading an I/O data block in a volume; and determining if the I/O data block from the volume comprises zero data. The method also includes, if the I/O data block from the volume comprises zero data, bypassing writing the I/O data block from the journal to the I/O data block in the volume.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.