Extent-based storage architecture
US8924440B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 15, 2013 |
| Grant date | Dec 30, 2014 |
| Priority date | — |
| Expiry date | Aug 15, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/183
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An extent-based storage architecture is implemented by a storage server receiving a read request for an extent from a client, wherein the extent includes a group of contiguous blocks and the read request includes a file block number. The storage server retrieves an extent identifier from a first sorted data structure, wherein the storage server uses the received file block number to traverse the first sorted data structure to the extent identifier. The storage server retrieves a reference to the extent from a second sorted data structure, wherein the storage server uses the retrieved extent identifier to traverse the second sorted data structure to the reference, and wherein the second sorted data structure is global across a plurality of volumes. The storage server retrieves the extent from a storage device using the reference and returns the extent to the client.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.