Transactional file system
US7512636B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 10, 2004 |
| Grant date | Mar 31, 2009 |
| Priority date | — |
| Expiry date | Nov 29, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S707/99953
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A transactional file system wherein multiple file system operations may be performed as a transaction. An application specifies that file system-related operations should be handled in a transaction, and the application is given a file handle associated with a transaction context. For file system requests associated with a transaction context, a file system component manages operations consistent with transactional behavior. The component provides data isolation by providing multiple file versions, such that transactional readers do not receive changes until after the transaction commits and the reader reopens the file. The component also handles namespace logging operations in a multiple-level log that facilitates logging and recovery. Namespace isolation is provided until a transaction commits via isolation directories, whereby until committed, a transaction sees the effects of its own operations but not the operations of other transactions. Transactions over a network are also facilitated via a redirector protocol.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.