公开(公告)号：US20240012584A1

公开(公告)日：2024-01-11

申请号：US18173696

申请日：2023-02-23

Applicant: NUTANIX, INC.

Inventor： Amod Vilas JALTADE ,  John CHAU ,  Praveen Kumar PADIA ,  Radenko PAVLOVIC ,  Vinayak Hindurao KHOT

IPC: G06F3/06

CPC classification number: G06F3/0667 ,  G06F3/061 ,  G06F3/0647 ,  G06F3/067

Abstract: Various embodiments set forth techniques for managing metadata for a vblock include dynamically normalizing and denormalizing vblock metadata associated with an extent. Vblock metadata associated with an extent is normalized when the extent is migrated to a different extent group by having the vblock metadata to a mapping between the extent identifier and an extent group identifier in a metadata map separate from the vblock metadata. Vblock metadata associated with an extent is denormalized whenever the number of vblock metadata associated with an extent drops below a threshold. Vblock metadata is denormalized by updating the vblock metadata to include a mapping to an extent group, based on a mapping of the extent to the extent group in a separate metadata map, and then removing the mapping in the separate metadata map.

公开(公告)号：US20230132493A1

公开(公告)日：2023-05-04

申请号：US17452772

申请日：2021-10-28

Applicant: Nutanix, Inc.

Inventor： Tabrez Parvez MEMON ,  Harshit AGARWAL ,  Amod Vilas JALTADE

IPC: G06F3/06

Abstract: Methods, systems, and computer program products for importing a workload from an external system into a virtualization system. A virtual disk (vDisk) is created based on analysis of the data layout of the workload. The vDisk is sharded into a plurality of non-overlapping shards. Independently executing shard controllers are assigned to the non-overlapping shards. On an ongoing basis, the plurality of shard controllers manage respective shards of the plurality of shards. I/O activity on at least some individual ones of the plurality of shard controllers is monitored on an ongoing basis. Two or more shard controllers can be merged into a single shard controller when the I/O activity on the two or more shard controllers is measured to be below a threshold. A single shard controller can be split into two or more shard controllers when I/O activity on the single shard controller is measured to be above a threshold.

公开(公告)号：US20220414061A1

公开(公告)日：2022-12-29

申请号：US17514734

申请日：2021-10-29

Applicant: NUTANIX, INC.

Inventor： Tabrez Parvez MEMON ,  Harshit AGARWAL ,  Amod Vilas JALTADE ,  Sreejith MOHANAN

IPC: G06F16/178 ,  G06F16/11 ,  G06F16/182

Abstract: Various embodiments set forth techniques for maintaining replicas of a data set. The techniques include storing, by a first node, a first replica of the data set on the first node; storing, by a second node, a second replica of the data set on the second node; and performing, by the first node and based on first metadata associated with the first replica, a first data management activity on the first replica that changes a first format of the first replica so that the first format of the first replica is different from a second format of the second replica.

公开(公告)号：US20210141917A1

公开(公告)日：2021-05-13

申请号：US17099763

申请日：2020-11-16

Applicant: Nutanix, Inc.

Inventor： Karan GUPTA ,  Rishi BHARDWAJ ,  Amod Vilas JALTADE ,  Gowtham ALLURI ,  Pavan Kumar KONKA

IPC: G06F21/62 ,  G06F3/06 ,  G06F9/455 ,  H04L29/08 ,  G06F16/27 ,  G06F16/907

Abstract: Systems for low-latency data access in distributed computing systems. A method embodiment commences upon generating a first storage area in local storage of a first computing node. Access to the first storage area is provided through the first computing node. A second storage area is generated wherein the second storage area comprises a first set of metadata that comprises local storage device locations of at least some of the local storage areas of the first storage area. A set of physical access locations of the second storage area is stored to a database that manages updates to the second set of metadata pertaining to the second storage area. Accesses to the first storage area are accomplished by querying the database to retrieve a location of the second set of metadata, and then accessing the first storage area through one or more additional levels of metadata that are node-wise collocated.

公开(公告)号：US20190340374A1

公开(公告)日：2019-11-07

申请号：US15965676

申请日：2018-04-27

Applicant: Nutanix, Inc

Inventor： Karan GUPTA ,  Rishi BHARDWAJ ,  Amod Vilas JALTADE ,  Gowtham ALLURI ,  Pavan Kumar KONKA

IPC: G06F21/62 ,  G06F17/30 ,  G06F3/06 ,  H04L29/08 ,  G06F9/455

Abstract: Systems for low-latency data access in distributed computing systems. A method embodiment commences upon generating a first storage area in local storage of a first computing node. Access to the first storage area is provided through the first computing node. A second storage area is generated wherein the second storage area comprises a first set of metadata that comprises local storage device locations of at least some of the local storage areas of the first storage area. A set of physical access locations of the second storage area is stored to a database that manages updates to the second set of metadata pertaining to the second storage area. Accesses to the first storage area are accomplished by querying the database retrieve a location of the second set of metadata, and then accessing the first storage area through one or more additional levels of metadata that are node-wise collocated.