公开(公告)号：US11853569B2

公开(公告)日：2023-12-26

申请号：US17237289

申请日：2021-04-22

Applicant: NUTANIX, INC.

Inventor： Mohammad Mahmood ,  Aman Gupta ,  Gaurav Jain ,  Anoop Jawahar ,  Prateek Kajaria

IPC: G06F3/06

CPC classification number: G06F3/064 ,  G06F3/0619 ,  G06F3/0653 ,  G06F3/0664 ,  G06F3/0679

Abstract: Various embodiments set forth techniques for cache warmup. The techniques determining, by a node, identities of one or more target storage blocks of a plurality of storage blocks managed by a storage system, where the node previously cached metadata corresponding to the one or more target storage blocks; receiving the metadata corresponding to the one or more target storage blocks; and storing the metadata corresponding to the one or more target storage blocks in a cache memory of the node.

公开(公告)号：US11467933B2

公开(公告)日：2022-10-11

申请号：US16946602

申请日：2020-06-29

Applicant: Nutanix, Inc.

Inventor： Mohammad Mahmood ,  Roger Sean Liao

IPC: G06F11/20 ,  G06F3/06

Abstract: Systems for distributed data storage. A method commences upon accessing a set of data items that describe computing nodes to be organized into a ring topology. The ring topology and distributed data storage policies are characterized by quantitative failure-resilient characteristics such as a replication factor. Various characteristics of the topology serve to bound two or more availability domains of the ring into which the computing nodes can be mapped. A set of quantitative values pertaining to respective quantitative failure-resilient characteristics are used for enumerating candidate ring topologies where the computing nodes are mapped into the availability domains. Using the quantitative failure-resilient characteristics, alternative candidate ring topologies are evaluated so as to determine a configuration score for candidate ring topologies. A candidate ring topology is configured based on a computed configuration score surpassing a threshold score. When a failure event is detected, the ring is reevaluated, remapped, and considered for reconfiguration.

公开(公告)号：US10802749B2

公开(公告)日：2020-10-13

申请号：US16425022

申请日：2019-05-29

Applicant: Nutanix, Inc.

Inventor： Mohammad Mahmood ,  Anoop Menon ,  Ashwin Thennaram Vakkayil ,  Sandeep Kumar Madanala ,  Shubham Shukla ,  Chern Yih Cheah

IPC: G06F3/06

Abstract: A method commences upon accessing a set of data items that describe computing nodes to be organized into failure-tolerant configuration. The failure-tolerant configuration is characterized by system availability characteristics such as a replication factor and such as a hierarchical distribution of computing nodes. Characteristics of the topology include boundaries that define two or more hierarchically-related availability domain levels. Computing nodes are situated within these boundaries. Instances of a target hierarchical availability domain level are sorted, and instances of a hierarchically lower availability domain level are also sorted to form a multi-level sort order of computing nodes. Computing entities are mapped onto the computing nodes by observing the multi-level sort order.

公开(公告)号：US12099421B2

公开(公告)日：2024-09-24

申请号：US17962010

申请日：2022-10-07

Applicant: Nutanix, Inc.

Inventor： Mohammad Mahmood ,  Roger Sean Liao

IPC: G06F11/20 ,  G06F3/06

CPC classification number: G06F11/2094 ,  G06F3/0619 ,  G06F3/064 ,  G06F3/065 ,  G06F3/067 ,  G06F2201/805

Abstract: Systems for distributed data storage. A method commences upon accessing a set of data items that describe computing nodes to be organized into a ring topology. The ring topology and distributed data storage policies are characterized by quantitative failure-resilient characteristics such as a replication factor. Various characteristics of the topology serve to bound two or more availability domains of the ring into which the computing nodes can be mapped. A set of quantitative values pertaining to respective quantitative failure-resilient characteristics are used for enumerating candidate ring topologies where the computing nodes are mapped into the availability domains. Using the quantitative failure-resilient characteristics, alternative candidate ring topologies are evaluated so as to determine a configuration score for candidate ring topologies. A candidate ring topology is configured based on a computed configuration score surpassing a threshold score. When a failure event is detected, the ring is reevaluated, remapped, and considered for reconfiguration.

公开(公告)号：US10698780B2

公开(公告)日：2020-06-30

申请号：US15230147

申请日：2016-08-05

Applicant: Nutanix, Inc.

Inventor： Mohammad Mahmood ,  Roger Sean Liao

IPC: G06F11/20 ,  G06F3/06

Abstract: Systems for distributed data storage. A method commences upon accessing a set of data items that describe computing nodes to be organized into a ring topology. The ring topology and distributed data storage policies are characterized by quantitative failure-resilient characteristics such as a replication factor. Various characteristics of the topology serve to bound two or more availability domains of the ring into which the computing nodes can be mapped. A set of quantitative values pertaining to respective quantitative failure-resilient characteristics are used for enumerating candidate ring topologies where the computing nodes are mapped into the availability domains. Using the quantitative failure-resilient characteristics, alternative candidate ring topologies are evaluated so as to determine a configuration score for candidate ring topologies. A candidate ring topology is configured based on a computed configuration score surpassing a threshold score. When a failure event is detected, the ring is reevaluated, remapped, and considered for reconfiguration.