Well... I tried to verify this using a -generic kernel, but it proved harder than I thought. That is because the squashfs module is builtin in standard ubuntu kernels.
So, to verify this i'd have to build my own kernel that had it as a module. Below is what I've done to verify this at least doesn't regress anything. And to also verify that the package has 'manual_add_modules squashfs'. $ lxc launch ubuntu-daily:zesty z1 $ echo "deb http://archive.ubuntu.com/ubuntu zesty-proposed main universe" | lxc file push - z1/etc/apt/sources.list.d/proposed.list $ lxc exec z1 -- apt-get update -q $ lxc exec z1 -- apt-get install \ --quiet --assume-yes --no-install-recommends \ cloud-initramfs-rooturl linux-image-generic $ lxc exec z1 -- sh -xc 'update-initramfs -u -k all' + update-initramfs -u -k all update-initramfs: Generating /boot/initrd.img-4.10.0-26-generic W: mdadm: /etc/mdadm/mdadm.conf defines no arrays. $ lxc exec z1 -- grep squash /usr/share/initramfs-tools/hooks/rooturl manual_add_modules squashfs ** Tags removed: verification-needed ** Tags added: verification-done-zesty -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1689642 Title: cloud-initramfs-rooturl should manual_add_modules squashfs To manage notifications about this bug go to: https://bugs.launchpad.net/cloud-initramfs-tools/+bug/1689642/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs