# This module automatically grows the root partition on Amazon EC2 HVM # instances. This allows an instance to be created with a bigger root # filesystem than provided by the AMI. { config, lib, pkgs, ... }: with lib; let growpart = pkgs.stdenv.mkDerivation { name = "growpart"; src = pkgs.fetchurl { url = "https://launchpad.net/cloud-utils/trunk/0.27/+download/cloud-utils-0.27.tar.gz"; sha256 = "16shlmg36lidp614km41y6qk3xccil02f5n3r4wf6d1zr5n4v8vd"; }; patches = [ ./growpart-util-linux-2.26.patch ]; buildPhase = '' cp bin/growpart $out sed -i 's|awk|gawk|' $out sed -i 's|sed|gnused|' $out ''; dontInstall = true; dontPatchShebangs = true; }; in { config = mkIf config.ec2.hvm { boot.initrd.extraUtilsCommands = '' copy_bin_and_libs ${pkgs.gawk}/bin/gawk copy_bin_and_libs ${pkgs.gnused}/bin/sed copy_bin_and_libs ${pkgs.utillinux}/sbin/sfdisk cp -v ${growpart} $out/bin/growpart ln -s sed $out/bin/gnused ''; boot.initrd.postDeviceCommands = '' if [ -e /dev/xvda ] && [ -e /dev/xvda1 ]; then TMPDIR=/run sh $(type -P growpart) /dev/xvda 1 udevadm settle fi ''; }; }