Invention Publication
- Patent Title: METHODS AND STORAGE NODES TO DECREASE DELAY IN RESUMING INPUT OUTPUT (I/O) OPERATIONS AFTER A NON-DISRUPTIVE EVENT FOR A STORAGE OBECT OF A DISTRIBUTED STORAGE SYSTEM BY UTILIZING ASYNCHRONOUS INFLIGHT REPLAY OF THE I/O OPERATIONS
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Application No.: US18424244Application Date: 2024-01-26
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Publication No.: US20240168671A1Publication Date: 2024-05-23
- Inventor: Krishna Murthy Chandraiah Setty Narasingarayanapeta , Akhil Kaushik
- Applicant: NetApp, Inc.
- Applicant Address: US CA San Jose
- Assignee: NetApp, Inc.
- Current Assignee: NetApp, Inc.
- Current Assignee Address: US CA San Jose
- Main IPC: G06F3/06
- IPC: G06F3/06

Abstract:
In one embodiment, a method comprises maintaining state information regarding a data replication status for a storage object of the storage node of a primary storage cluster with the storage object being replicated to a replicated storage object of a secondary storage cluster, temporarily disallowing input/output (I/O) operations when the storage object has a connection loss or failure. The method further includes initiating a resynchronization between the storage object and the replicated storage object including initiating asynchronous persistent inflight tracking and replay of any missing I/O operations that are missing from one of a first Op log of the primary storage cluster and a second Op log of the secondary storage cluster, and allowing new I/O operations to be handled with the storage object of the primary storage cluster without waiting for completion of the asynchronous persistent inflight tracking and replay at the secondary storage cluster.
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