Using byte-range locks to manage multiple concurrent accesses to a file in a distributed filesystem
US9792294B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 2, 2014 |
| Grant date | Oct 17, 2017 |
| Priority date | — |
| Expiry date | Aug 18, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/128
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The disclosed embodiments disclose techniques for using byte-range locks to manage multiple concurrent accesses to a file in a distributed filesystem. Two or more cloud controllers collectively manage distributed filesystem data that is stored in the cloud storage systems; the cloud controllers ensure data consistency for the stored data, and each cloud controller caches portions of the distributed filesystem. During operation, a cloud controller receives from a first client a request to access a portion of the file. The cloud controller contacts the owning cloud controller for the portion of the file to request a byte-range lock for that portion of the file. The owning cloud controller returns a byte-range lock to the requesting cloud controller if no other clients of the distributed filesystem are currently locking the requested portion of the file with conflicting accesses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.