Invention Grant
US07987383B1 System and method for rapid indentification of coredump disks during simultaneous take over
有权
在同时接管的情况下快速识别核心磁盘盘的系统和方法
- Patent Title: System and method for rapid indentification of coredump disks during simultaneous take over
- Patent Title (中): 在同时接管的情况下快速识别核心磁盘盘的系统和方法
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Application No.: US11741546Application Date: 2007-04-27
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Publication No.: US07987383B1Publication Date: 2011-07-26
- Inventor: Susan M. Coatney , Loellyn J. Cassell , Angel B. Aviles
- Applicant: Susan M. Coatney , Loellyn J. Cassell , Angel B. Aviles
- Applicant Address: US CA Sunnyvale
- Assignee: NetApp, Inc.
- Current Assignee: NetApp, Inc.
- Current Assignee Address: US CA Sunnyvale
- Agency: Cesari and McKenna, LLP
- Main IPC: G06F11/00
- IPC: G06F11/00

Abstract:
A multiple node storage system cluster that allows for a takeover by a takeover node simultaneously with a failing node resetting its storage adapters is provided. A takeover monitor on the failing node initiates a “coredump” procedure by selecting a coredump disk. After selecting the coredump disk, the failing node determines the world wide name (WWN) of that disk and sends this information in a message across the cluster interconnect to the takeover node. In response to receipt of this message, the takeover node begins takeover procedures with respect to all disks except for the coredump disk. The failing node simultaneously resets its storage adapters and writes is memory to the coredump disk. The failing node later updates a completion header on that disk. The takeover node completes the takeover without waiting for the storage adapter reset, and subsequently reads the completion header and copies coredump information into its memory.
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