Netapp, Inc.

Vinay Kumar B C

Mrinal K Bhattacharjee

Shivali Gupta

Saurabh Gupta

Sateesh Kumar Pola

Sushrut Bhowmik

Sreenath Korrakuti

Arun Kumar Pandey

Boopathy Krishnamoorthy

Systems and methods for performing single I/O writes are provided. According to one embodiment, responsive to receipt of a write operation from a client by a file system layer of a node of a distributed storage system and a data payload of the operation having been determined to meet a compressibility threshold, an intermediate storage layer of the node logically interposed between the file system layer and a block storage media is caused to perform a single input/output (I/O) write operation that persists the compressed data payload and corresponding metadata to support asynchronous journaling of the write operation. The single I/O write operation coupled with the use of a new pool file that maintains a list of available blocks for single I/O write operations and a modified node crash recovery approach allows the write operation to be acknowledged to the client while the journaling is performed asynchronously.

Single input/output writes in a file system hosted on a cloud, virtual, or commodity-server platform

Presented herein are methods, non-transitory computer readable media, and devices triggering a metadata recovery process within a network storage system, which include: dividing metadata into metadata segments, wherein each of the metadata segments is tasked to perform a specific file system operation function, validating each of the metadata segments during the specific file system operation function; upon failure to validate at least one of the metadata segments, triggering an automatic repair process while maintaining the operation function tasked to the metadata segment, and upon finalizing the automatic repair process, resuming the specific file system operation function tasked to the metadata segment.

Automatic incremental repair of granular filesystem objects

Growing community of inventors

Mysore, India

Vinay Kumar B C