Invention Grant
US08775861B1 Non-disruptive storage device migration in failover cluster environment
有权
故障转移群集环境中的无中断存储设备迁移
- Patent Title: Non-disruptive storage device migration in failover cluster environment
- Patent Title (中): 故障转移群集环境中的无中断存储设备迁移
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Application No.: US13535740Application Date: 2012-06-28
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Publication No.: US08775861B1Publication Date: 2014-07-08
- Inventor: Helen S. Raizen , Cesareo Contreras , Michael E. Bappe , Edward L. Thigpen
- Applicant: Helen S. Raizen , Cesareo Contreras , Michael E. Bappe , Edward L. Thigpen
- Applicant Address: US MA Hopkinton
- Assignee: EMC Corporation
- Current Assignee: EMC Corporation
- Current Assignee Address: US MA Hopkinton
- Agency: BainwoodHuang
- Main IPC: G06F11/00
- IPC: G06F11/00
Abstract:
A method of performing data migration from a source storage device to a target storage device in a failover cluster includes use of a roll-forward flag to signal successful completion of a migration operation from a migration node to failover nodes of the cluster, reliably controlling host access to the target storage device to ensure that it is used only when it has been successfully synchronized to the source storage device and a commit operation has occurred that ensures that subsequent read and write operations are directed exclusively to the target storage device.
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