Libvirt Service failed to start.

Hello, 
 

This morning, I tried to restore the backup of a VM made with the VM Backup plugin. I must have made a wrong manipulation or broken something because now I have the message "Libvirt Service failed to start." which is displayed in the VMS tab of Unraid. 

Here is the procedure I tried to follow to restore my VM: 
 

- Stop all VMs

$ unzstd 20220124_0200_vdisk1.img.zst
$ mkdir /mnt/user/domains/Ubuntu
$ cp /mnt/user/myName/Backup/virtual_machine/Ubuntu/20220124_0200_vdisk1.img /mnt/user/domains/Ubuntu/Ubuntu_vdisk1.img
$ cp /mnt/user/myName/Backup/virtual_machine/Ubuntu/20220124_0200_Ubuntu.xml /etc/libvirt/qemu/Ubuntu.xml

Just after this last command, I was expecting the VM icon to be displayed in the Unraid dashboard, but it's not the case. 

I think the wrong manipulation comes from the last command because now I have 2 libvirt in /etc/ 
 

/etc/libvirt/
/etc/libvirt-/

libvirt is empty and libvirt-/ is filled with files in the qemu folder

I also have a backup of libvirt.img, but I do not know what it is used for, maybe it is necessary?

I hope I have been as explicit as possible,
Thank you in advance for your precious help

EDIT :

After a restart of the server, no more message "Libvirt Service failed to start".
But I have this message when I try to start my Ubuntu vm: 
" operation failed: unable to find any master var store for loader: /usr/share/qemu/ovmf-x64/OVMF_CODE-pure-efi.fd "

In my backup folder, I have a file like below, but I don't know if I should put it in the error path. I'm afraid to do something wrong 
 

20220124_0200_a95ed675-8ce5-ae1b-e1a6-7b8bdd583a7b_VARS-pure-efi.fd

unraid-diagnostics-20220129-1434.zip

Edited January 29, 20224 yr by petchav