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nixos/libvirt: Syntactic-only refactoring
This commit is contained in:
Rickard Nilsson
parent
301b4e9018
commit
a0c0f63811
@ -1,5 +1,3 @@
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# Systemd services for libvirtd.
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{ config, lib, pkgs, ... }:
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with lib;
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@ -16,71 +14,59 @@ let
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${cfg.extraConfig}
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'';
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in
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in {
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{
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###### interface
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options = {
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virtualisation.libvirtd.enable =
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mkOption {
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type = types.bool;
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default = false;
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description =
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''
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This option enables libvirtd, a daemon that manages
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virtual machines. Users in the "libvirtd" group can interact with
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the daemon (e.g. to start or stop VMs) using the
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<command>virsh</command> command line tool, among others.
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'';
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};
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virtualisation.libvirtd.enable = mkOption {
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type = types.bool;
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default = false;
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description = ''
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This option enables libvirtd, a daemon that manages
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virtual machines. Users in the "libvirtd" group can interact with
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the daemon (e.g. to start or stop VMs) using the
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<command>virsh</command> command line tool, among others.
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'';
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};
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virtualisation.libvirtd.enableKVM =
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mkOption {
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type = types.bool;
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default = true;
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description =
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''
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This option enables support for QEMU/KVM in libvirtd.
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'';
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};
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virtualisation.libvirtd.enableKVM = mkOption {
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type = types.bool;
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default = true;
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description = ''
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This option enables support for QEMU/KVM in libvirtd.
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'';
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};
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virtualisation.libvirtd.extraConfig =
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mkOption {
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type = types.lines;
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default = "";
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description =
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''
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Extra contents appended to the libvirtd configuration file,
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libvirtd.conf.
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'';
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};
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virtualisation.libvirtd.extraConfig = mkOption {
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type = types.lines;
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default = "";
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description = ''
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Extra contents appended to the libvirtd configuration file,
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libvirtd.conf.
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'';
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};
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virtualisation.libvirtd.extraOptions =
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mkOption {
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type = types.listOf types.str;
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default = [ ];
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example = [ "--verbose" ];
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description =
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''
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Extra command line arguments passed to libvirtd on startup.
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'';
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};
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virtualisation.libvirtd.onShutdown =
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mkOption {
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type = types.enum ["shutdown" "suspend" ];
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default = "suspend";
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description =
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''
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When shutting down / restarting the host what method should
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be used to gracefully halt the guests. Setting to "shutdown"
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will cause an ACPI shutdown of each guest. "suspend" will
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attempt to save the state of the guests ready to restore on boot.
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'';
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};
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virtualisation.libvirtd.extraOptions = mkOption {
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type = types.listOf types.str;
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default = [ ];
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example = [ "--verbose" ];
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description = ''
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Extra command line arguments passed to libvirtd on startup.
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'';
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};
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virtualisation.libvirtd.onShutdown = mkOption {
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type = types.enum ["shutdown" "suspend" ];
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default = "suspend";
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description = ''
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When shutting down / restarting the host what method should
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be used to gracefully halt the guests. Setting to "shutdown"
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will cause an ACPI shutdown of each guest. "suspend" will
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attempt to save the state of the guests ready to restore on boot.
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'';
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};
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};
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@ -95,65 +81,66 @@ in
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boot.kernelModules = [ "tun" ];
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systemd.services.libvirtd =
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{ description = "Libvirt Virtual Machine Management Daemon";
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users.extraGroups.libvirtd.gid = config.ids.gids.libvirtd;
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wantedBy = [ "multi-user.target" ];
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after = [ "systemd-udev-settle.service" ]
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++ optional vswitch.enable "vswitchd.service";
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systemd.services.libvirtd = {
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description = "Libvirt Virtual Machine Management Daemon";
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path = [
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pkgs.bridge-utils
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pkgs.dmidecode
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pkgs.dnsmasq
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pkgs.ebtables
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]
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++ optional cfg.enableKVM pkgs.qemu_kvm
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++ optional vswitch.enable vswitch.package;
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wantedBy = [ "multi-user.target" ];
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after = [ "systemd-udev-settle.service" ]
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++ optional vswitch.enable "vswitchd.service";
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preStart =
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''
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mkdir -p /var/log/libvirt/qemu -m 755
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rm -f /var/run/libvirtd.pid
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path = [
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pkgs.bridge-utils
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pkgs.dmidecode
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pkgs.dnsmasq
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pkgs.ebtables
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]
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++ optional cfg.enableKVM pkgs.qemu_kvm
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++ optional vswitch.enable vswitch.package;
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mkdir -p /var/lib/libvirt
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mkdir -p /var/lib/libvirt/dnsmasq
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preStart = ''
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mkdir -p /var/log/libvirt/qemu -m 755
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rm -f /var/run/libvirtd.pid
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chmod 755 /var/lib/libvirt
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chmod 755 /var/lib/libvirt/dnsmasq
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mkdir -p /var/lib/libvirt
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mkdir -p /var/lib/libvirt/dnsmasq
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# Copy default libvirt network config .xml files to /var/lib
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# Files modified by the user will not be overwritten
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for i in $(cd ${pkgs.libvirt}/var/lib && echo \
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libvirt/qemu/networks/*.xml libvirt/qemu/networks/autostart/*.xml \
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libvirt/nwfilter/*.xml );
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do
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mkdir -p /var/lib/$(dirname $i) -m 755
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cp -npd ${pkgs.libvirt}/var/lib/$i /var/lib/$i
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done
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chmod 755 /var/lib/libvirt
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chmod 755 /var/lib/libvirt/dnsmasq
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# libvirtd puts the full path of the emulator binary in the machine
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# config file. But this path can unfortunately be garbage collected
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# while still being used by the virtual machine. So update the
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# emulator path on each startup to something valid (re-scan $PATH).
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for file in /etc/libvirt/qemu/*.xml /etc/libvirt/lxc/*.xml; do
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test -f "$file" || continue
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# get (old) emulator path from config file
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emulator=$(grep "^[[:space:]]*<emulator>" "$file" | sed 's,^[[:space:]]*<emulator>\(.*\)</emulator>.*,\1,')
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# get a (definitely) working emulator path by re-scanning $PATH
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new_emulator=$(PATH=${pkgs.libvirt}/libexec:$PATH command -v $(basename "$emulator"))
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# write back
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sed -i "s,^[[:space:]]*<emulator>.*, <emulator>$new_emulator</emulator> <!-- WARNING: emulator dirname is auto-updated by the nixos libvirtd module -->," "$file"
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done
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''; # */
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# Copy default libvirt network config .xml files to /var/lib
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# Files modified by the user will not be overwritten
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for i in $(cd ${pkgs.libvirt}/var/lib && echo \
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libvirt/qemu/networks/*.xml libvirt/qemu/networks/autostart/*.xml \
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libvirt/nwfilter/*.xml );
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do
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mkdir -p /var/lib/$(dirname $i) -m 755
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cp -npd ${pkgs.libvirt}/var/lib/$i /var/lib/$i
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done
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serviceConfig = {
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ExecStart = ''@${pkgs.libvirt}/sbin/libvirtd libvirtd --config "${configFile}" --daemon ${concatStringsSep " " cfg.extraOptions}'';
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Type = "notify";
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KillMode = "process"; # when stopping, leave the VMs alone
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Restart = "on-failure";
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};
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# libvirtd puts the full path of the emulator binary in the machine
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# config file. But this path can unfortunately be garbage collected
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# while still being used by the virtual machine. So update the
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# emulator path on each startup to something valid (re-scan $PATH).
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for file in /etc/libvirt/qemu/*.xml /etc/libvirt/lxc/*.xml; do
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test -f "$file" || continue
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# get (old) emulator path from config file
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emulator=$(grep "^[[:space:]]*<emulator>" "$file" | sed 's,^[[:space:]]*<emulator>\(.*\)</emulator>.*,\1,')
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# get a (definitely) working emulator path by re-scanning $PATH
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new_emulator=$(PATH=${pkgs.libvirt}/libexec:$PATH command -v $(basename "$emulator"))
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# write back
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sed -i "s,^[[:space:]]*<emulator>.*, <emulator>$new_emulator</emulator> <!-- WARNING: emulator dirname is auto-updated by the nixos libvirtd module -->," "$file"
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done
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''; # */
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serviceConfig = {
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ExecStart = ''@${pkgs.libvirt}/sbin/libvirtd libvirtd --config "${configFile}" --daemon ${concatStringsSep " " cfg.extraOptions}'';
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Type = "notify";
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KillMode = "process"; # when stopping, leave the VMs alone
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Restart = "on-failure";
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};
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};
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systemd.sockets.virtlogd = {
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description = "Virtual machine log manager socket";
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@ -176,8 +163,5 @@ in
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description = "Virtual machine lock manager";
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serviceConfig.ExecStart = "@${pkgs.libvirt}/sbin/virtlockd virtlockd";
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};
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users.extraGroups.libvirtd.gid = config.ids.gids.libvirtd;
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};
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}
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