nixpkgs/modules/virtualisation/libvirtd.nix

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# Upstart jobs for libvirtd.
{ config, pkgs, ... }:
with pkgs.lib;
let
cfg = config.virtualisation.libvirtd;
in
{
###### interface
options = {
virtualisation.libvirtd.enable =
mkOption {
default = false;
description =
''
This option enables libvirtd, a daemon that manages
virtual machines. You can interact with the daemon
(e.g. to start or stop VMs) using the
<command>virsh</command> command line tool, among others.
'';
};
virtualisation.libvirtd.enableKVM =
mkOption {
default = true;
description =
''
This option enables support for QEMU/KVM in libvirtd.
'';
};
};
###### implementation
config = mkIf cfg.enable {
environment.systemPackages = [ pkgs.libvirt ];
jobs.libvirtd =
{ description = "Libvirtd virtual machine management daemon";
startOn = "stopped udevtrigger";
path =
[ pkgs.bridge_utils pkgs.dmidecode pkgs.dnsmasq
] ++ optional cfg.enableKVM pkgs.qemu_kvm;
preStart =
''
mkdir -p /var/log/libvirt/qemu -m 755
'';
exec = "${pkgs.libvirt}/sbin/libvirtd --daemon --verbose";
daemonType = "daemon";
};
jobs.libvirt_guests =
{ name = "libvirt-guests";
description = "Job to save/restore libvirtd VMs";
startOn = "started libvirtd";
# We want to suspend VMs only on shutdown, but Upstart is broken.
#stopOn = "starting shutdown and stopping libvirtd";
stopOn = "stopping libvirtd";
path = [ pkgs.gettext pkgs.libvirt pkgs.gawk ];
preStart =
''
mkdir -p /var/lock/subsys -m 755
${pkgs.libvirt}/etc/rc.d/init.d/libvirt-guests start
'';
postStop = "${pkgs.libvirt}/etc/rc.d/init.d/libvirt-guests stop";
};
};
}