KVM Virtual machines not starting on Exadata

Exadata KVM virtual machines not starting

We have a customer where all KVM machines were not starting. The machines is encountering the following error during startup:

[root@dbnode1 ~]# virsh start dbnode1
error: Failed to start domain dbnode1
error: internal error: process exited while connecting to monitor: 2024-04-27Tqemu-system-x86_64: -blockdev {"driver":"file","filename":"/EXAVMIMAGES/GuestImages/hostname.com/System.img","node-name":"libvirt-9-storage","cache":{"direct":false,"no-flush":false},"auto-read-only":true,"discard":"unmap"}: Could not open '/EXAVMIMAGES/GuestImages/hostname.com/System.img': Permission denied

Cause:

Due to the installation of some third-party security components libvirtd package and its libraries were not functioning properly.

Solution:

Rsinstall the libvirtd package

Update file: /etc/libvirt/qemu.conf

user = "root"
group = "root"

Restart the Service:

#systemctl restart libvirtd

Thanks for reading and happy troubleshooting 😊

Regards,

ZAHEER

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