Coalescing transactional same-block writes for virtual block maps
US9430503B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 28, 2013 |
| Grant date | Aug 30, 2016 |
| Priority date | — |
| Expiry date | Aug 7, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/1865
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A technique for preserving metadata changes in a transaction log involves coalescing metadata changes based on the block of storage in which the metadata to be changed resides. Metadata change information that accompanies a file system command is stored in nodes of a searchable data structure, wherein each node accumulates metadata changes for a respective block of storage. Once all metadata changes are specified in the searchable data structure, or after some threshold number of metadata changes have been stored, the storage processor composes a transaction for each node summarizing the metadata changes and writes the transaction to the transaction log.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.