Troubleshooting

Problem 1: Insufficient Permission Upon VM Startup

Symptom

The VM fails to be started, and the following information is displayed:

Possible Cause

• The SELinux of the system prevents the VM from creating the /var/run/openvswitch/tap1 file.
• The QEMU process does not have the permission to access the file.

Procedure

1. In the QEMU configuration file /etc/libvirt/qemu.conf, ensure that the QEMU process user has the read and execute permissions on the /var/run/openvswitch directory. The following shows the default line numbers for configuration:

   

   Restart the libvirtd service.

   1	systemctl restart libvirtd

2. Ensure that SELinux does not block processes.
   1. Disable SELinux.

      1	setenforce 0

   2. Start the VM.

      1	virsh start VM1

      The VM is started successfully, and the fault is rectified.