VM Account Login Failure During VM Startup

Symptom

On a server powered by the new Kunpeng 920 processor model and running openEuler 24.03 LTS SP2, there is a low probability that the VM account fails to log in for VM startup. The guest OS does not respond when the user accesses the VM through the serial port.

Figure 1 VM status "running" displayed by the virsh list command

Figure 2 No response from the guest OS when the user accesses the VM through the serial port

Key Process and Cause Analysis

During VM startup, there is a possibility that the rootfs fails to be mounted. As a result, the guest OS cannot be logged in to. The VM serial port logs show that no rootfs file system is mounted to the running VM.

Figure 3 No rootfs mount information printed

Conclusion and Solution

Try restarting the cVM for several times until the confidential VM is successfully started.