I'm running this inside a fedora 34 container in ovirt-imageio CI: 'virt-builder', '-v', '-x', 'cirros-0.3.5', '--write', '/etc/cirros-init/config:DATASOURCE_LIST="nocloud"', '--root-password', 'password:', '-o', '/var/tmp/imageio-images/cirros-0.3.5' The command fails in: supermin: ext2: copying kernel modules supermin: ext2: creating minimal initrd '/var/tmp/.guestfs-0/appliance.d.t7nny0l7/initrd' supermin: exception: Sys_error("/lib/modules/5.12.9-300.fc34.x86_64/modules.dep: No such file or directory") libguestfs: trace: launch = -1 (error) virt-builder: error: libguestfs error: /usr/bin/supermin exited with error status 1, see debug messages above For full error log see: https://travis-ci.com/github/nirs/ovirt-imageio/jobs/513305268 The container file is: https://github.com/oVirt/ovirt-imageio/blob/master/docker/Dockerfile.fedora-... The same code works with centos stream 8 container and fedora 32, 33 containers. Based on this error: supermin: exception: Sys_error("/lib/modules/5.12.9-300.fc34.x86_64/modules.dep: No such file or directory") I think I'm missing some package removed from the fedora 34 container, but I don't have any idea which one. I hope someone has more insight on this. Nir