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nixos/proxmox-image: allow building UEFI images

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Allow building other than Legacy-BIOS-only Proxmox images.
Default is unchanged.

To build UEFI proxmox image use:
  proxmox.qemuConf.bios = "ovmf";
(default is "seabios")

To build image bootable using both "seabios" and "ovmf" use:
  partitionTableType = "hybrid";
BIOS can be switched in Proxmox between "seabios" and "ovmf" and VM still boots.
(GRUB2-only, systemd-boot does not boot under "seabios")

To build systemd-boot UEFI image:
  proxmox.qemuConf.bios = "ovmf";
  boot.loader.systemd-boot.enable = true;
This commit is contained in:
Oto Petřík 2022-07-24 15:36:43 +02:00
parent 8f0c7e38cb
commit 4729d5d7f6
3 changed files with 80 additions and 1 deletions
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20
nixos/doc/manual/from_md/release-notes/rl-2211.section.xml
View file

@ -980,6 +980,26 @@
if you intend to add packages to <literal>/bin</literal>.
</para>
</listitem>
<listitem>
<para>
The <literal>proxmox.qemuConf.bios</literal> option was added,
it corresponds to <literal>Hardware-&gt;BIOS</literal> field
in Proxmox web interface. Use
<literal>&quot;ovmf&quot;</literal> value to build UEFI image,
default value remains <literal>&quot;bios&quot;</literal>. New
option <literal>proxmox.partitionTableType</literal> defaults
to either <literal>&quot;legacy&quot;</literal> or
<literal>&quot;efi&quot;</literal>, depending on the
<literal>bios</literal> value. Setting
<literal>partitionTableType</literal> to
<literal>&quot;hybrid&quot;</literal> results in an image,
which supports both methods
(<literal>&quot;bios&quot;</literal> and
<literal>&quot;ovmf&quot;</literal>), thereby remaining
bootable after change to Proxmox
<literal>Hardware-&gt;BIOS</literal> field.
</para>
</listitem>
<listitem>
<para>
memtest86+ was updated from 5.00-coreboot-002 to 6.00-beta2.

2
nixos/doc/manual/release-notes/rl-2211.section.md
View file

@ -306,6 +306,8 @@ Available as [services.patroni](options.html#opt-services.patroni.enable).
- `dockerTools.buildImage` deprecates the misunderstood `contents` parameter, in favor of `copyToRoot`.
Use `copyToRoot = buildEnv { ... };` or similar if you intend to add packages to `/bin`.
- The `proxmox.qemuConf.bios` option was added, it corresponds to `Hardware->BIOS` field in Proxmox web interface. Use `"ovmf"` value to build UEFI image, default value remains `"bios"`. New option `proxmox.partitionTableType` defaults to either `"legacy"` or `"efi"`, depending on the `bios` value. Setting `partitionTableType` to `"hybrid"` results in an image, which supports both methods (`"bios"` and `"ovmf"`), thereby remaining bootable after change to Proxmox `Hardware->BIOS` field.
- memtest86+ was updated from 5.00-coreboot-002 to 6.00-beta2. It is now the upstream version from https://www.memtest.org/, as coreboot's fork is no longer available.
- Option descriptions, examples, and defaults writting in DocBook are now deprecated. Using CommonMark is preferred and will become the default in a future release.

59
nixos/modules/virtualisation/proxmox-image.nix
View file

@ -53,6 +53,13 @@ with lib;
Guest memory in MB
'';
};
bios = mkOption {
type = types.enum [ "seabios" "ovmf" ];
default = "seabios";
description = ''
Select BIOS implementation (seabios = Legacy BIOS, ovmf = UEFI).
'';
};
# optional configs
name = mkOption {
@ -99,6 +106,17 @@ with lib;
Additional options appended to qemu-server.conf
'';
};
partitionTableType = mkOption {
type = types.enum [ "efi" "hybrid" "legacy" "legacy+gpt" ];
description = ''
Partition table type to use. See make-disk-image.nix partitionTableType for details.
Defaults to 'legacy' for 'proxmox.qemuConf.bios="seabios"' (default), other bios values defaults to 'efi'.
Use 'hybrid' to build grub-based hybrid bios+efi images.
'';
default = if config.proxmox.qemuConf.bios == "seabios" then "legacy" else "efi";
defaultText = lib.literalExpression ''if config.proxmox.qemuConf.bios == "seabios" then "legacy" else "efi"'';
example = "hybrid";
};
filenameSuffix = mkOption {
type = types.str;
default = config.proxmox.qemuConf.name;
@ -122,9 +140,33 @@ with lib;
${lib.concatStrings (lib.mapAttrsToList cfgLine properties)}
#qmdump#map:virtio0:drive-virtio0:local-lvm:raw:
'';
inherit (cfg) partitionTableType;
supportEfi = partitionTableType == "efi" || partitionTableType == "hybrid";
supportBios = partitionTableType == "legacy" || partitionTableType == "hybrid" || partitionTableType == "legacy+gpt";
hasBootPartition = partitionTableType == "efi" || partitionTableType == "hybrid";
hasNoFsPartition = partitionTableType == "hybrid" || partitionTableType == "legacy+gpt";
in {
assertions = [
{
assertion = config.boot.loader.systemd-boot.enable -> config.proxmox.qemuConf.bios == "ovmf";
message = "systemd-boot requires 'ovmf' bios";
}
{
assertion = partitionTableType == "efi" -> config.proxmox.qemuConf.bios == "ovmf";
message = "'efi' disk partitioning requires 'ovmf' bios";
}
{
assertion = partitionTableType == "legacy" -> config.proxmox.qemuConf.bios == "seabios";
message = "'legacy' disk partitioning requires 'seabios' bios";
}
{
assertion = partitionTableType == "legacy+gpt" -> config.proxmox.qemuConf.bios == "seabios";
message = "'legacy+gpt' disk partitioning requires 'seabios' bios";
}
];
system.build.VMA = import ../../lib/make-disk-image.nix {
name = "proxmox-${cfg.filenameSuffix}";
inherit partitionTableType;
postVM = let
# Build qemu with PVE's patch that adds support for the VMA format
vma = (pkgs.qemu_kvm.override {
@ -181,7 +223,18 @@ with lib;
boot = {
growPartition = true;
kernelParams = [ "console=ttyS0" ];
loader.grub.device = lib.mkDefault "/dev/vda";
loader.grub = {
device = lib.mkDefault (if (hasNoFsPartition || supportBios) then
# Even if there is a separate no-fs partition ("/dev/disk/by-partlabel/no-fs" i.e. "/dev/vda2"),
# which will be used the bootloader, do not set it as loader.grub.device.
# GRUB installation fails, unless the whole disk is selected.
"/dev/vda"
else
"nodev");
efiSupport = lib.mkDefault supportEfi;
efiInstallAsRemovable = lib.mkDefault supportEfi;
};
loader.timeout = 0;
initrd.availableKernelModules = [ "uas" "virtio_blk" "virtio_pci" ];
};
@ -191,6 +244,10 @@ with lib;
autoResize = true;
fsType = "ext4";
};
fileSystems."/boot" = lib.mkIf hasBootPartition {
device = "/dev/disk/by-label/ESP";
fsType = "vfat";
};
services.qemuGuest.enable = lib.mkDefault true;
};