Invention Grant
- Patent Title: System and method for invalidation walk-through of inodes
- Patent Title (中): inode无效传播的系统和方法
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Application No.: US13776348Application Date: 2013-02-25
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Publication No.: US09348532B1Publication Date: 2016-05-24
- Inventor: Amber M. Palekar , Szu-Wen Kuo
- Applicant: NetApp, Inc.
- Applicant Address: US CA Sunnyvale
- Assignee: NetApp, Inc.
- Current Assignee: NetApp, Inc.
- Current Assignee Address: US CA Sunnyvale
- Agency: LeClairRyan, a Professional Corporation
- Main IPC: G06F3/06
- IPC: G06F3/06 ; G06F17/30

Abstract:
A system and method for deferring an invalidation walk-through of a volume in memory and a later invalidation walk-through of inodes the volume are described herein. Node A may store volume information for one or more volumes to memory including inodes of the volume storing data for the volume. Node A performs a primary procedure that may include removing volumes from the memory, such as a procedure that transfers ownership of the volumes to node B. Removing a volume from memory comprises removing its volume information from memory. Node A performs an invalidation deferment procedure that marks each volume as stale for preventing data of the volumes to be served and sends a completion message to node B which begins serving data of the volume. After node B begins serving data of the volume, node A performs an invalidation walk-through procedure to remove inodes of the volume from memory.
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