I booted a xenial guest as shown in my comment 10, added -proposed and rebooted into overlayfs
ubuntu@sm-y1:~$ uname -r 4.4.0-38-generic ubuntu@sm-y1:~$ dpkg -S /boot/vmlinuz-4.4.0-38-generic linux-image-4.4.0-38-generic: /boot/vmlinuz-4.4.0-38-generic $ grep overlayroot /proc/mounts overlayroot / overlayfs rw,relatime,lowerdir=/media/root-ro,upperdir=/media/root-rw//overlay,workdir=/media/root-rw//overlay-workdir 0 0 $ sudo apt-key add my.pubkey OK So xenial looks good to me. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1618572 Title: apt-key add fails in overlayfs To manage notifications about this bug go to: https://bugs.launchpad.net/cloud-init/+bug/1618572/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
