Lock state reconstruction for non-disruptive persistent operation
US10255236B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 9, 2016 |
| Grant date | Apr 9, 2019 |
| Priority date | — |
| Expiry date | Dec 9, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L41/0654
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Techniques for notifying clients whose locks did not persist about a loss of lock state after a failover event are disclosed herein. According to one embodiment, a storage node of a high availability cluster constructs a lock data structure based on a mirrored lock data structure for a lock on a data container. The storage node receives a data operation request permitted by the lock from a client to operate on the data container. The storage node instructs to terminate a connection with the client if the lock data structure for the lock on the data container has been recently reconstructed. Accordingly, the client revokes the connection and refrains from committing the locally cached operations to the data container stored in the storage node. The client has an option to reconnect with the cluster and regain the data container privilege controlled by the lock.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.