Robin Systems, Inc.

Manjunath Mageswaran

Ravi Kumar Alluboyina

Tushar Doshi

Shravan Kumar Vallala

Lakshay Badlani

Dhanashankar Venkatesan

Ripulkumar Hemantbhai Patel

Jagadish Kumar Mukku

Partha Sarathi Seetala

Giridharan Kesavan

Hariharan Sethuraman

Raghavendra Pandimakki Ganesha

A new snapshot of a storage volume is created by instructing computing nodes to suppress write requests. Once pending write requests from the computing nodes are completed, storage nodes create a new snapshot for the storage volume by allocating a new segment to the new snapshot and finalizes and performs garbage collection with respect to segments allocated to the previous snapshot. Subsequent write requests to the storage volume are then performed on the segments allocated to the new snapshot. An orchestration layer implements a multi-role application that is provisioned with virtualized storage and computation resources. A snapshot of the application may be created and used to rollback or clone the application. Clone snapshots of storage volumes may be gradually populated with data from prior snapshots to reduce loading on a primary snapshot.

Multi-role application orchestration in a distributed storage system

A bundled application includes a plurality of entities such as logical storage volumes, application instances, pods, clusters, and computing nodes that are dependent on one another. Dependencies of the bundled application on individual entities is determined and quantified. Impact of failure of an entity may be determined using the dependencies. Dependency may be determined with reference to redundancy among entities. Usage of an entity by other entities and potential redistribution may be determined.

Monitoring and managing of complex multi-role applications

A KUBERNETES installation processes a script and invokes a scheduling agent in response to encountering an instruction to create a pod. The scheduling agent is an agent of an orchestrator and performs tasks such as identifying a selected node, creating multiple interface objects with multiple IP addresses, and creating storage volumes in coordination with the orchestrator. Upon creation, the pod may call a CNI that is an agent of the orchestrator in order to configure the pod to use the multiple interface objects. The pod may call a CSI that is an agent of the orchestrator in order to bind a storage volume to the pod. The scheduling agent may coordinate with the orchestrator to implement affinity and anti-affinity rules for placement of pods and storage volumes. The script may also be transformed by the orchestrator in order to insert instructions implementing affinity and anti-affinity rules.

Implementing affinity and anti-affinity with KUBERNETES

Implementing clone snapshots in a distributed storage system

A new snapshot of a storage volume is created by suppressing write requests. Once pending write requests from the computing nodes are completed, storage nodes create a new snapshot for the storage volume by allocating a new segment to the new snapshot. Subsequent write requests to the storage volume are then performed on the segments allocated to the new snapshot. An orchestration layer implements a bundled application that is provisioned with storage volumes and containers. A snapshot of the application may be created and used to rollback or clone the application. The amount of processing cores, memory, and containers may be increased or decreased based on usage. Amount of storage allocated to a storage volume may be augmented by a snapshot reservation ratio. The snapshot reservation ratio is adjusted over time according to usage.

Snapshot reservations in a distributed storage system

A new snapshot of a storage volume is created by instructing computing nodes to suppress write requests. Once pending write requests from the computing nodes are completed, storage nodes create a new snapshot for the storage volume by allocating a new segment to the new snapshot and finalizes and performs garbage collection with respect to segments allocated to the previous snapshot. An orchestration layer implements a multi-role application that is provisioned with virtualized storage and computation resources. A snapshot of the application may be created and used to rollback or clone the application. Containers may be loaded with data structures for encrypted and/or authenticated communication. Failed storage volumes may be detected and repaired. Repopulating repaired volumes may be managed by an application or a storage manager implementing a virtualized storage system. An autopilot invokes repair of failed containers and storage nodes in response to detected failures.

Monitoring containers in a distributed computing system

A new snapshot of a storage volume is created by instructing computing nodes to suppress write requests. A snapshot of the application may be created and used to rollback or clone the application. Clones snapshots of storage volumes may be gradually populated with data from prior snapshots to reduce loading on a primary snapshot. Components of cloned applications may communicate with one another using addresses of these components in the parent application. Changes to application state may be written to a remote storage volume that may be mounted to a new instance or clone of the application to recreate its state. Jobs to create and execute a bundled application may be referenced with a simulated file system that generates reads to hosts only when the job log file is actually read. Storage nodes may implement interfaces to a SAN or cloud storage system.

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San Jose, CA, United States of America

Manjunath Mageswaran