公开(公告)号：US20230409597A1

公开(公告)日：2023-12-21

申请号：US18181414

申请日：2023-03-09

Applicant: Oracle International Corporation

Inventor： Satish Kumar Kashi Visvanathan ,  Vikram Singh Bisht ,  Viggnesh Venugopal ,  Ravi Lingappa Shamanna

IPC: G06F16/27

CPC classification number: G06F16/27

Abstract: Techniques are described for partitioning B-tree keys of file systems into key ranges for parallel processing in delta generation during file storage replications between file systems in different cloud infrastructure regions. In certain embodiments, a delta generation processing for cross-region replication may utilize a key-range splitting mechanism involving a recursive algorithm that partitions B-tree keys of a source file system into roughly equal-size key ranges. All the partitioned key ranges may be processed in parallel and concurrently by different processing threads, one thread per key range, to improve the performance of the delta generation and achieve scalability.

公开(公告)号：US20240281413A1

公开(公告)日：2024-08-22

申请号：US18646676

申请日：2024-04-25

Applicant: Oracle International Corporation

Inventor： Satish Kumar Kashi Visvanathan ,  Viggnesh Venugopal ,  Victor Vladimir Golosovker ,  Ravi Lingappa Shamanna

IPC: G06F16/182 ,  G06F9/50 ,  G06F11/14 ,  G06F11/20 ,  G06F16/11 ,  G06F16/174 ,  G06F16/176 ,  G06F16/178 ,  G06F16/185 ,  G06F16/22 ,  G06F16/23 ,  G06F16/27 ,  G06F21/60 ,  G06F21/62 ,  H04L9/08 ,  H04L9/14 ,  H04L9/32

CPC classification number: G06F16/1844 ,  G06F9/505 ,  G06F11/1417 ,  G06F11/1451 ,  G06F11/1464 ,  G06F11/2023 ,  G06F11/2028 ,  G06F16/128 ,  G06F16/1756 ,  G06F16/1774 ,  G06F16/178 ,  G06F16/185 ,  G06F16/2246 ,  G06F16/2365 ,  G06F16/27 ,  G06F21/602 ,  G06F21/6218 ,  H04L9/0819 ,  H04L9/14 ,  H04L9/3228 ,  G06F2201/84

Abstract: Techniques are described for checkpointing multiple key ranges in parallel and concurrently during file storage replications between file systems in different cloud infrastructure regions. In certain embodiments, multiple range threads processing multiple key ranges, one thread per key range, create checkpoints for their respective key ranges in parallel and concurrently after processing a per-determined number of B-tree keys. In certain embodiments, upon encountering a failure event, either a system crash or a thread failure, each thread restarts its B-tree key processing from a B-tree key after the most recent checkpoint.

公开(公告)号：US20230409559A1

公开(公告)日：2023-12-21

申请号：US18162459

申请日：2023-01-31

Applicant: Oracle International Corporation

Inventor： Satish Kumar Kashi Visvanathan ,  Viggnesh Venugopal ,  Stephen Anthony Fridella ,  Ashwin Vijayavel

IPC: G06F16/23 ,  G06F16/27 ,  G06F11/14

CPC classification number: G06F16/2365 ,  G06F2201/84 ,  G06F11/1464 ,  G06F16/27

Abstract: Novel techniques are described for maintaining file consistency between different cloud infrastructure regions during cross-region file storage replication. The novel techniques comprise upon detecting a file deletion status (i.e., a file directory entry version marked as deletion) in a source file system during a replication cycle, retrieving file name from a valid file directory entry of a prior snapshot to construct a temporary file directory entry containing necessary information for a target file system to reconstruct a duplicate file directory entry version marked as deletion. The temporary file directory entry is transferred from the source file system to the target file system during the same replication cycle.

公开(公告)号：US20230409522A1

公开(公告)日：2023-12-21

申请号：US17991688

申请日：2022-11-21

Applicant: Oracle International Corporation

Inventor： Satish Kumar Kashi Visvanathan ,  Sudarsan R. Piduri ,  Vikram Singh Bisht ,  Viggnesh Venugopal ,  John McClain

IPC: G06F16/11 ,  G06F21/62 ,  G06F21/60 ,  G06F16/22

CPC classification number: G06F16/128 ,  G06F21/6218 ,  G06F21/602 ,  G06F16/2246

Abstract: Novel techniques for end-to-end file storage replication and security between file systems in different cloud infrastructure regions are disclosed herein. In one embodiment, a file storage service generates deltas between snapshots in a source file system, and transfers the deltas and associated data through a high-throughput object storage to recreate a new snapshot in a target file system located in a different region during disaster recovery. The file storage service utilizes novel techniques to achieve scalable, reliable, and restartable end-to-end replication. Novel techniques are also described to ensure a secure transfer of information and consistency during the end-to-end replication.

公开(公告)号：US12182078B2

公开(公告)日：2024-12-31

申请号：US18181414

申请日：2023-03-09

Applicant: Oracle International Corporation

Inventor： Satish Kumar Kashi Visvanathan ,  Vikram Singh Bisht ,  Viggnesh Venugopal ,  Ravi Lingappa Shamanna

IPC: G06F16/18 ,  G06F9/50 ,  G06F11/14 ,  G06F11/20 ,  G06F16/11 ,  G06F16/174 ,  G06F16/176 ,  G06F16/178 ,  G06F16/182 ,  G06F16/185 ,  G06F16/22 ,  G06F16/23 ,  G06F16/27 ,  G06F21/60 ,  G06F21/62 ,  H04L9/08 ,  H04L9/14 ,  H04L9/32

Abstract: Techniques are described for partitioning B-tree keys of file systems into key ranges for parallel processing in delta generation during file storage replications between file systems in different cloud infrastructure regions. In certain embodiments, a delta generation processing for cross-region replication may utilize a key-range splitting mechanism involving a recursive algorithm that partitions B-tree keys of a source file system into roughly equal-size key ranges. All the partitioned key ranges may be processed in parallel and concurrently by different processing threads, one thread per key range, to improve the performance of the delta generation and achieve scalability.

公开(公告)号：US20230409442A1

公开(公告)日：2023-12-21

申请号：US18304226

申请日：2023-04-20

Applicant: Oracle International Corporation

Inventor： Satish Kumar Kashi Visvanathan ,  Viggnesh Venugopal ,  Victor Vladimir Golosovker ,  Ravi Lingappa Shamanna

IPC: G06F11/14 ,  G06F16/22

CPC classification number: G06F11/1464 ,  G06F11/1451 ,  G06F16/2246 ,  G06F2201/84

Abstract: Techniques are described for maintaining data consistency when failure events occur during file storage replications between file systems in different cloud infrastructure regions. In certain embodiments, two generation numbers (or different identifications) are assigned to two groups of processed B-tree key-value pairs, one before and one after a failure event, within a key range. In some embodiments, the two generation numbers are assigned to a group of B-tree key-value pairs processed by a failed thread and another group of B-tree key-value pairs processed by a substitute thread taking over the failed thread to avoid potential data corruption.

公开(公告)号：US20250068601A1

公开(公告)日：2025-02-27

申请号：US18943779

申请日：2024-11-11

Applicant: Oracle International Corporation

Inventor： Satish Kumar Kashi Visvanathan ,  Vikram Singh Bisht ,  Viggnesh Venugopal ,  Ravi Lingappa Shamanna

IPC: G06F16/182 ,  G06F9/50 ,  G06F11/14 ,  G06F11/20 ,  G06F16/11 ,  G06F16/174 ,  G06F16/176 ,  G06F16/178 ,  G06F16/185 ,  G06F16/22 ,  G06F16/23 ,  G06F16/27 ,  G06F21/60 ,  G06F21/62 ,  H04L9/08 ,  H04L9/14 ,  H04L9/32

Abstract: Techniques are described for partitioning B-tree keys of file systems into key ranges for parallel processing in delta generation during file storage replications between file systems in different cloud infrastructure regions. In certain embodiments, a delta generation processing for cross-region replication may utilize a key-range splitting mechanism involving a recursive algorithm that partitions B-tree keys of a source file system into roughly equal-size key ranges. All the partitioned key ranges may be processed in parallel and concurrently by different processing threads, one thread per key range, to improve the performance of the delta generation and achieve scalability.

公开(公告)号：US20230412375A1

公开(公告)日：2023-12-21

申请号：US18094302

申请日：2023-01-06

Applicant: Oracle International Corporation

Inventor： Vikram Singh Bisht ,  Satish Kumar Kashi Visvanathan ,  Haoran Qi ,  Viggnesh Venugopal

IPC: H04L9/14 ,  H04L9/08 ,  H04L9/32 ,  G06F11/20

CPC classification number: H04L9/14 ,  H04L9/0819 ,  H04L9/3228 ,  G06F11/2023 ,  G06F2201/84

Abstract: Novel techniques are described for performing hierarchical key management involving an end-to-end file storage replication between different cloud infrastructure regions. The novel hierarchical key management comprises three different keys, a first security key for the source region, a session key, valid only for a session, for the transfer of data between two different regions, and a second security key for the target region. Novel techniques are also described for using different file keys for different files of a file system in each region.

公开(公告)号：US20230409534A1

公开(公告)日：2023-12-21

申请号：US18304161

申请日：2023-04-20

Applicant: Oracle International Corporation

Inventor： Satish Kumar Kashi Visvanathan ,  Viggnesh Venugopal ,  Victor Vladimir Golosovker ,  Ravi Lingappa Shamanna

IPC: G06F16/178 ,  G06F16/176 ,  G06F16/185

CPC classification number: G06F16/178 ,  G06F16/1774 ,  G06F16/185

Abstract: Techniques are described for checkpointing multiple key ranges in parallel and concurrently during file storage replications between file systems in different cloud infrastructure regions. In certain embodiments, multiple range threads processing multiple key ranges, one thread per key range, create checkpoints for their respective key ranges in parallel and concurrently after processing a per-determined number of B-tree keys. In certain embodiments, each thread requests a lock from a central checkpoint record and takes turns for updating a status byte while continuing processing the B-tree keys in its responsible key range. In certain embodiments, upon encountering a failure event, either a system crash or a thread failure, each thread restarts its B-tree key processing from a B-tree key after the most recent checkpoint.

公开(公告)号：US12147394B2

公开(公告)日：2024-11-19

申请号：US18326447

申请日：2023-05-31

Applicant: Oracle International Corporation

Inventor： Satish Kumar Kashi Visvanathan ,  Viggnesh Venugopal ,  Victor Vladimir Golosovker ,  Vikram Singh Bisht

IPC: G06F16/00 ,  G06F9/50 ,  G06F11/14 ,  G06F11/20 ,  G06F16/11 ,  G06F16/174 ,  G06F16/176 ,  G06F16/178 ,  G06F16/182 ,  G06F16/185 ,  G06F16/22 ,  G06F16/23 ,  G06F16/27 ,  G06F21/60 ,  G06F21/62 ,  H04L9/08 ,  H04L9/14 ,  H04L9/32

Abstract: Techniques are described for ensuring end-to-end fair-share resource utilization during cross-region replication. In certain embodiments, a fair-share architecture is used for communication among pipeline stages performing a cross-region replication between different cloud infrastructure regions. Cross-region replication-related jobs are distributed evenly from a pipeline stage into a temporary buffer in the fair-share architecture, and then further distributed evenly form the fair-share architecture to parallel running threads of next pipeline stage for execute. Techniques for static and dynamic resource allocations are also disclosed.