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|
# 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
'';
};
}
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