Processing read requests by a storage system
US8595444B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 8, 2013 |
| Grant date | Nov 26, 2013 |
| Priority date | — |
| Expiry date | Mar 8, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/163
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Read messages are issued by a client for data stored in a storage system. A client agent mediates between the client and the storage system. Each sequence of read requests generated by a single thread of execution in the client to read a specific data segment in the storage is defined as a client read session. Each read request sent from the client agent to the storage system includes a position and a size for reading. The read-ahead cache and a current sequence ID value for each client read session are maintained. For each incoming read request, the storage system determines whether to further process the read request based on a sequence ID value of the read request, and the source from which to obtain data for the read request, and which of the data to load into the read-ahead cache according to data positions of the read request.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.