Druva Inc.

Nutanix, Inc.

Gaurav Gangalwar

Milind Vithal Borate

Manoj Premanand Naik

Pradeep Thomas

Daniel Chilton

Will Strickland

An elastic request handling technique limits a number of threads used to service input/output (I/O) requests of a low-latency I/O workload received by a file system server executing on a cluster having a plurality of nodes deployed in a virtualization environment. The limited number of threads (server threads) is constantly maintained as 'active' and running on virtual central processing units (vCPUs) of a node. The file system server spawns and organizes the active server threads as one or more pools of threads. The server prioritizes the low-latency I/O requests by loading them onto the active threads and allowing the requests to run on those active threads to completion, thereby obviating overhead associated with lock contention and vCPU migration after a context switch (i.e., to avoid rescheduling a thread on a different vCPU after execution of the thread was suspended).

Elastic request handling technique for optimizing workload performance

Disclosed embodiments include a method (system and non-transitory computer-readable medium) for backing up updated portions of a plurality files having hierarchical relationships through object storage. In one or more embodiments, a file is segregated into chunks, and objects corresponding to the chunks are generated for storage at an object storage. For a chunk, an object for storing the chunk and additional objects for storing mapping information are generated. The mapping information may include path information identifying a path of the file in a hierarchical structure, a file version list identifying a version of the file, a chunk list describing an association between the file and the chunks, a chunk version list identifying a version of the chunk, etc. When a portion of the file is updated, objects corresponding to the updated portion of the file can be generated, and stored at the object storage.

Synthetic full backup storage over object storage

Growing community of inventors

Pune, India

Gaurav Gangalwar