Upgrade Core to Stable - Virtual Machine does not start

Hi,

I updated from v13 Core to 24.10 Stable without any issues. I added VMs and they run.

I tried to start the old VMs but all are running into trouble:

EFAULT] internal error: qemu unexpectedly closed the monitor: 2025-11-09T11:27:24.850353Z qemu-system-x86_64: -blockdev {“driver”:“file”,“filename”:“/mnt/poolx/”,“node-name”:“libvirt-1-storage”,“auto-read-only”:true,“discard”:“unmap”}: Could not open ‘/mnt/poolx/’: Permission denied

I tried to change the permissions for the pool on the shell to root but they will get back to libvirt-qemu. Next step was to add a password in the Devices for display. This doesn’t help.

stat /mnt/poolx shows

Hi Im your Hack attack
Last login: Sun Nov 9 11:55:41 CET 2025 on pts/6
root@freenas:~# stat /mnt/pool2/
File: /mnt/poolx/
Size: 7 Blocks: 17 IO Block: 512 directory
Device: 0,88 Inode: 4 Links: 6
Access: (0777/drwxrwxrwx) Uid: (64055/libvirt-qemu) Gid: (64055/libvirt-qemu)
Access: 2025-11-09 11:23:30.479424209 +0100
Modify: 2025-08-20 22:03:36.322391710 +0200
Change: 2025-11-09 11:12:07.624673399 +0100
Birth: 2020-03-07 18:23:44.590551887 +0100

As I have access on the files within the pool I assume the issue within the VM customizing. Any ideas where to look up?

Many thanks

JJ

I have the issue solved. Finally it was a wrong interface number within the Ubuntu server VM. At /etc/netplan/ the yaml had enp0s4 instead of enp0s3. After rebooting the system it worked.

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