Druva Inc.

Sybase, Inc.

Aditya Kelkar

Milind Vithal Borate

Somesh Jain

Anand Apte

Amit Shirish Kulkarni

Alok Kumar

Yogendra Acharya

Aditya Agrawal

Anup Agarwal

Amit Pathak

Paresh Manhar Rathod

A file system may include an object storage, a merged index, and a distributed database. When a file is stored in the file system, the file may be converted to an object and be stored in the object storage. The deduplication index of the file may be stored in the distributed database. The namespace metadata of the file may be stored in the merged index. The merged index generates namespace entries of the file when the file is created, deleted, and/or modified. A namespace entry may be associated with a specific file and may include a creation version and a deletion version. When a file is deleted or modified, instead of modifying the existing namespace entries, new entries associated with different versions and including different creation or deletion versions are created. The status of a file may be monitored by one or more entries associated with a file.

Deduplicated merged indexed object storage file system

Synchronization of metadata structures in a multi-threaded system includes receiving, by a first thread of a processing device, a request for a metadata structure located in a first cache associated with an object, obtaining, by the first thread of the processing device, a synchronization mechanism associated with the first cache, holding, by the first thread of the processing device, the metadata structure associated with the object, receiving, by a second thread of the processing device, a request for the metadata structure in a second cache associated with the object, obtaining, by the second thread of the processing device, a synchronization mechanism associated with the second cache and informing the second thread of the processing device that the metadata structure associated with the object is not available.

Synchronization of metadata in a multi-threaded system

Growing community of inventors

Pune, India

Aditya Kelkar