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author | zimbatm <zimbatm@zimbatm.com> | 2018-01-06 13:52:51 +0000 |
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committer | GitHub <noreply@github.com> | 2018-01-06 13:52:51 +0000 |
commit | eddf30cc93e1b778b6bc10d0eb1bb175385d034f (patch) | |
tree | b95f3a695c0794e674743e6551e47476a5b22ec6 /nixos/modules/system/boot/grow-partition.nix | |
parent | 51110e2a0fc9c415973b61adf09cd1dae16abff7 (diff) | |
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nixos: introduce boot.growPartition (#33521)
Move it from being a profile
Diffstat (limited to 'nixos/modules/system/boot/grow-partition.nix')
-rw-r--r-- | nixos/modules/system/boot/grow-partition.nix | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/nixos/modules/system/boot/grow-partition.nix b/nixos/modules/system/boot/grow-partition.nix new file mode 100644 index 000000000000..c4c6d82dc5c8 --- /dev/null +++ b/nixos/modules/system/boot/grow-partition.nix @@ -0,0 +1,43 @@ +# This module automatically grows the root partition. +# This allows an instance to be created with a bigger root filesystem +# than provided by the machine image. + +{ config, lib, pkgs, ... }: + +with lib; + +{ + + options = { + boot.growPartition = mkEnableOption "grow the root partition on boot"; + }; + + config = mkIf config.boot.growPartition { + + 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 + copy_bin_and_libs ${pkgs.utillinux}/sbin/lsblk + + substitute "${pkgs.cloud-utils}/bin/.growpart-wrapped" "$out/bin/growpart" \ + --replace "${pkgs.bash}/bin/sh" "/bin/sh" \ + --replace "awk" "gawk" \ + --replace "sed" "gnused" + + ln -s sed $out/bin/gnused + ''; + + boot.initrd.postDeviceCommands = '' + rootDevice="${config.fileSystems."/".device}" + if [ -e "$rootDevice" ]; then + rootDevice="$(readlink -f "$rootDevice")" + parentDevice="$(lsblk -npo PKNAME "$rootDevice")" + TMPDIR=/run sh $(type -P growpart) "$parentDevice" "''${rootDevice#$parentDevice}" + udevadm settle + fi + ''; + + }; + +} |