On 11/23/21 17:25, Elias Mobery wrote:
Hi everyone!
I've built a Debian Live ISO with packages qemu and libvirt to run a VM in the live environment.
The guest images are placed in /var/lib/libvirt/images and 2GB each.
Everything works great, except for one issue.
When starting a VM, libvirt automatically issues a chown command to the images, changing ownership.
This results in a copy of the images being created in /run/live/overlay/rw/var/lib/libvirt/images
I don't want these copies to be made but can't stop it.
I've tried editing qemu.conf user/group, dynamic ownership etc. without any luck.
Is there a way to STOP libvirt from changing the ownership of these images?
Setting dynamic_ownership=0 in qemu.conf is the way to go (don't forget to restart the daemon after you made the change). Alternatively, you can set <seclabel/> either for whole domain or individual disks, e.g. like this: <disk type='file' device='disk'> <driver name='qemu' type='qcow2'/> <source file='/var/lib/libvirt/images/vm1.qcow2'> <seclabel relabel='no'/> </source> </disk> or for whole domain: ... </devices> <seclabel type='none'/> </domain> I'm not sure what your setup is, but if chown() is a problem then what if guest tries to write onto its disk? Wouldn't that create a copy in overlay? Michal