This is your kernel cmdline: Command line: BOOT_IMAGE=vmlinuz-4.19.0-6-amd64 initrd=initrd.img-4.19.0-6-amd64 ip=dhcp root=/srv/fai/nfsroot:vers=3 rootovl FAI_FLAGS=verbose,sshd,createvt,reboot FAI_CONFIG_SRC=nfs://faiserver/srv/fai/config FAI_ACTION=install rd.debug
I guess the problem is root=/srv/fai/nfsroot. You hit this bug because your dhcp server is not the FAI install server. https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=731244 The fix is easy, just add the IP of your install server like this root=11.22.33.44:/srv/fai/nfsroot.... -- regards Thomas