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qemu systemd not virtd

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This commit is contained in:
Adrian Gunnar Lauterer 2024-11-05 13:07:53 +01:00
parent d2595c7fa6
commit 935d32f35f
5 changed files with 105 additions and 40 deletions
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38
flake.nix
View File

@ -14,8 +14,8 @@
# stylix.inputs.nixpkgs.follows = "nixpkgs";
# stylix.inputs.home-manager.follows = "home-manager";
NixVirt.url = "https://flakehub.com/f/AshleyYakeley/NixVirt/*.tar.gz";
NixVirt.inputs.nixpkgs.follows = "nixpkgs";
# NixVirt.url = "https://flakehub.com/f/AshleyYakeley/NixVirt/*.tar.gz";
# NixVirt.inputs.nixpkgs.follows = "nixpkgs";
ozai.url = "git+https://git.pvv.ntnu.no/Projects/ozai.git";
@ -46,7 +46,6 @@
, nixpkgs
, sops-nix
, nixos-hardware
, NixVirt
, unstable
, ... }@inputs:
let
@ -117,43 +116,10 @@
inherit inputs;
};
modules = [
NixVirt.nixosModules.default
./machines/gandalf/configuration.nix
({ config, pkgs, ... }: { nixpkgs.overlays = [ overlay-unstable ]; })
sops-nix.nixosModules.sops
({ config, pkgs, ... }: {
# Your VM configuration here
virtualisation.libvirt.enable = true;
virtualisation.libvirt.connections."qemu:///system".domains = [
{
definition = NixVirt.lib.domain.writeXML (NixVirt.lib.domain.templates.q35 {
name = "gandalf-grey";
uuid = "a1db010b-4ad3-436a-bd99-f290f5ac8806"; # Replace with a generated UUID
memory = { count = 4; unit = "GiB"; };
vcpu = { value = 2; }; # Number of CPU cores
storage_vol = "/vm-images/OPNsense-24.7-nano-amd64.img"; # Path to your storage image file
install_vol = null; # No installation volume since we're using an existing image
virtio_net = true;
virtio_video = true;
virtio_drive = true;
devices = [
{ hostdev = "/sys/bus/pci/devices/0000:04:00.0"; }
{ hostdev = "/sys/bus/pci/devices/0000:05:00.0"; }
{ hostdev = "/sys/bus/pci/devices/0000:06:00.0"; }
{ hostdev = "/sys/bus/pci/devices/0000:07:00.0"; }
{ hostdev = "/sys/bus/pci/devices/0000:08:00.0"; }
{ hostdev = "/sys/bus/pci/devices/0000:0b:00.0"; }
{ hostdev = "/sys/bus/pci/devices/0000:0b:00.1"; }
{ hostdev = "/sys/bus/pci/devices/0000:0c:00.0"; }
{ hostdev = "/sys/bus/pci/devices/0000:0c:00.1"; }
];
});
active = true;
}
];
})
];
};

30
machines/gandalf/bootvm-daemon.sh Executable file
View File

@ -0,0 +1,30 @@
qemu-system-x86_64 \
-m 4G \
-cpu host \
-smp 2 \
-enable-kvm \
-device vfio-pci,host=04:00.0 \
-device vfio-pci,host=05:00.0 \
-device vfio-pci,host=06:00.0 \
-device vfio-pci,host=07:00.0 \
-device vfio-pci,host=08:00.0 \
-device vfio-pci,host=0b:00.0 \
-device vfio-pci,host=0b:00.1 \
-device vfio-pci,host=0c:00.0 \
-device vfio-pci,host=0c:00.1 \
-drive file=/vm-images/OPNsense-24.7-nano-amd64.img,format=raw \
-vga virtio \
-netdev user,id=net0 -device virtio-net,netdev=net0 \
-display none \
-daemonize \
#-net none
# -device hostdev,/sys/bus/pci/devices/0000:04:00.0\
# -device hostdev,/sys/bus/pci/devices/0000:05:00.0\
# -device hostdev,/sys/bus/pci/devices/0000:06:00.0\
# -device hostdev,/sys/bus/pci/devices/0000:07:00.0\
# -device hostdev,/sys/bus/pci/devices/0000:08:00.0\
# -device hostdev,/sys/bus/pci/devices/0000:0b:00.0\
# -device hostdev,/sys/bus/pci/devices/0000:0b:00.1\
# -device hostdev,/sys/bus/pci/devices/0000:0c:00.0\
# -device hostdev,/sys/bus/pci/devices/0000:0c:00.1\ #

20
machines/gandalf/bootvm.sh
View File

@ -5,11 +5,25 @@ qemu-system-x86_64 \
-enable-kvm \
-device vfio-pci,host=04:00.0 \
-device vfio-pci,host=05:00.0 \
-device vfio-pci,host=06:00.0 \
-device vfio-pci,host=07:00.0 \
-device vfio-pci,host=08:00.0 \
-device vfio-pci,host=0c:00.1 \
-device vfio-pci,host=08:00.0 \
-device vfio-pci,host=08:00.0 \
-device vfio-pci,host=08:00.0 \
-drive file=/vm-images/OPNsense-24.7-nano-amd64.img,format=raw \
-vga virtio \
-netdev user,id=net0 -device virtio-net,netdev=net0 \
-daemonize \
-vnc
-nographic \
#-nographic \
#-net none
# -device hostdev,/sys/bus/pci/devices/0000:04:00.0\
# -device hostdev,/sys/bus/pci/devices/0000:05:00.0\
# -device hostdev,/sys/bus/pci/devices/0000:06:00.0\
# -device hostdev,/sys/bus/pci/devices/0000:07:00.0\
# -device hostdev,/sys/bus/pci/devices/0000:08:00.0\
# -device hostdev,/sys/bus/pci/devices/0000:0b:00.0\
# -device hostdev,/sys/bus/pci/devices/0000:0b:00.1\
# -device hostdev,/sys/bus/pci/devices/0000:0c:00.0\
# -device hostdev,/sys/bus/pci/devices/0000:0c:00.1\ #

2
machines/gandalf/configuration.nix
View File

@ -9,7 +9,7 @@
./hardware-configuration.nix
../../profiles/base.nix
../../services/virt.nix
# ./nixvirt.nix
./qemu.nix
];
# Use the systemd-boot EFI boot loader.

55
machines/gandalf/qemu.nix Normal file
View File

@ -0,0 +1,55 @@
{ pkgs, ... }:
{
users.users.qemu = {
isSystemUser = true;
description = "QEMU User";
home = "/var/lib/qemu";
createHome = true;
group = "qemu";
extraGroups = [ "vfio" ]; # Add qemu to vfio group
};
users.groups.qemu = {};
services.udev.extraRules = ''
# Set proper permissions for VFIO devices
SUBSYSTEM=="vfio", GROUP="vfio", MODE="0660"
'';
environment.systemPackages = with pkgs; [
qemu_kvm
];
systemd.services.qemu-vm = {
description = "QEMU VM Service";
#wantedBy = [ "multi-user.target" ];
serviceConfig = {
#can add ,rombar=0 to vfio devices, but it does at least run now.
ExecStart = ''
${pkgs.qemu_kvm}/bin/qemu-system-x86_64 \
-m 4G \
-cpu host \
-smp 2 \
-enable-kvm \
-device vfio-pci,host=04:00.0 \
-device vfio-pci,host=05:00.0 \
-device vfio-pci,host=06:00.0 \
-device vfio-pci,host=07:00.0 \
-device vfio-pci,host=08:00.0 \
-device vfio-pci,host=0b:00.0 \
-device vfio-pci,host=0b:00.1 \
-device vfio-pci,host=0c:00.0 \
-device vfio-pci,host=0c:00.1 \
-drive file=/vm-images/OPNsense-24.7-nano-amd64.img,format=raw \
-vga virtio \
-netdev user,id=net0 -device virtio-net,netdev=net0 \
-display none \
#-daemonize
'';
Restart = "on-failure";
User = "root"; # Run as the qemu user
};
};
}