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：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.

公开(公告)号：US20200250056A1

公开(公告)日：2020-08-06

申请号：US16263199

申请日：2019-01-31

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Ashok Ramakrishnan ,  Paul Cerqua

IPC: G06F11/20 ,  G06F9/455

Abstract: Each server device of a plurality of server devices may perform a method that includes detecting, by a second server device, that a first storage access virtual machine (SAVM) operating on a first server device has failed, the first SAVM managing access to a first data store of a shared file system by a first client operating on the first server device using a first storage address. The method also includes directing a second SAVM operating on the second server device to manage access to the first data store and granting the second SAVM access to a first state information file stored within the shared file system, the first state information file being associated with the first storage address. The method can also include restoring to the first SAVM, when it becomes operational, management of access to the first data store and access to the first state information file.

公开(公告)号：US20210103598A1

公开(公告)日：2021-04-08

申请号：US16593909

申请日：2019-10-04

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Priya Pappanaickenpalayam Muthuswamy ,  Ashok Ramakrishnan

IPC: G06F16/27 ,  G06F16/23 ,  G06F16/22 ,  G06F16/178 ,  G06F16/188

Abstract: Examples described herein relate to a method for managing persistent handle state information. The persistent handle state information is generated for a file associated with a resource based on access of the file. The file is stored in a file system instance corresponding to the resource. The persistent handle state information corresponding to the file is stored in a state file in the file system instance corresponding to the resource.