OS Fails to Start and Enters the Emergency Mode When a Cluster Node Restarts

Symptom

When a node is restarted after the cluster is running properly for a period of time, the operating system (OS) fails to start and enters the emergency mode.

Handling Procedure

1. Delete the mount information of the data drives corresponding to /etc/fstab in the emergency mode.
2. After the OS is started, resolve the problem (for example, run the xfs_repair command to repair the file system).