What Can I Do If the Disaster Recovery Site VM Is Not Started After a Switchover?

Possible Cause

SDRS asynchronous replication supports crash consistency. During a switchover, data in the memory may be lost, so the disaster recovery site VM may need to use the crash recovery capability of the application or file system to restore data. In most cases, the restored data is consistent and can be normally used.

Solution

Example: After a switchover, the disaster recovery site VM failed to be started. An XFS exception occurred (LSN verification failed), and the OS entered the emergency mode.

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Solution: Run journalctl to check that the XFS file system is abnormal. Then, enter the emergency mode and run xfs_repair to rectify the fault.

Parent topic: Asynchronous Replication

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