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