公开(公告)号：US20210103563A1

公开(公告)日：2021-04-08

申请号：US16593568

申请日：2019-10-04

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Dhanwa Thirumalai ,  Peter William Madany

IPC: G06F16/182 ,  G06F11/10 ,  G06F16/11 ,  G06F16/174 ,  H04L29/08 ,  G06F11/30

Abstract: Examples described herein relate to a method for maintaining high-availability of file system instances. Examples include maintaining replica file system instances such as a first replica file system instance on a first computing node and a second replica file system instance on a second computing node. Further, a third computing node is instructed to create a sparse replica file system instance on the third computing node in response to detection of a failure condition associated with the second computing node. Moreover, a data update request is directed to the first replica file system instance and the sparse replica file system.

公开(公告)号：US11048559B2

公开(公告)日：2021-06-29

申请号：US16505621

申请日：2019-07-08

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Dhanwa Thirumalai ,  Jothivelavan Sivashanmugam ,  Ashok Ramakrishnan

IPC: G06F3/06 ,  G06F9/50 ,  H04L29/08

Abstract: Example implementations relate to managing ownership transfer of a file system instance in a virtualized distributed storage system. The virtualized distributed storage system includes a first node having a first virtual controller that acts as an owner of a file system instance in a distributed storage, and a second node having a second virtual controller coupled to the first node over a network. A failure condition associated with a first node is detected. Further, in response to detection of the failure condition, an ownership of the file system instance may be transferred from the first virtual controller to the second virtual controller no later than an IP address switchover of the first virtual controller.

公开(公告)号：US20200311037A1

公开(公告)日：2020-10-01

申请号：US16820588

申请日：2020-03-16

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Dhanwa Thirumalai

IPC: G06F16/182 ,  G06F16/18 ,  G06F16/16

Abstract: Example implementations relate to state information at a file location named with a version number. In an example, a data store stores replica state information having a file location named with a first version number. A second version number is received from a consensus protocol, and the file location of the state information is rename with the second version number. The replica state information is updated at the file location named with the second version number while servicing requests for client data.

公开(公告)号：US11409715B2

公开(公告)日：2022-08-09

申请号：US16593568

申请日：2019-10-04

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Dhanwa Thirumalai ,  Peter William Madany

IPC: G06F16/182 ,  G06F16/174 ,  G06F11/10 ,  G06F11/30 ,  H04L67/1034 ,  G06F16/11

Abstract: A method for maintaining high-availability of file system instances is described. The method includes maintaining replica file system instances such as a first replica file system instance on a first computing node and a second replica file system instance on a second computing node. Further, a third computing node is instructed to create a sparse replica file system instance on the third computing node in response to detection of a failure condition associated with the second computing node. Moreover, a data update request is directed to the first replica file system instance and the sparse replica file system.

公开(公告)号：US20210011776A1

公开(公告)日：2021-01-14

申请号：US16505621

申请日：2019-07-08

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Dhanwa Thirumalai ,  Jothivelavan Sivashanmugam ,  Ashok Ramakrishnan

IPC: G06F9/50 ,  G06F3/06 ,  H04L29/08

Abstract: Example implementations relate to managing ownership transfer of a file system instance in a virtualized distributed storage system. The virtualized distributed storage system includes a first node having a first virtual controller that acts as an owner of a file system instance in a distributed storage, and a second node having a second virtual controller coupled to the first node over a network. A failure condition associated with a first node is detected. Further, in response to detection of the failure condition, an ownership of the file system instance may be transferred from the first virtual controller to the second virtual controller no later than an IP address switchover of the first virtual controller.