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159 lines
3.8 KiB
Nix
159 lines
3.8 KiB
Nix
{ config, lib, pkgs, ... }:
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with lib;
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let
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cfg = config.services.nfs.server;
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exports = pkgs.writeText "exports" cfg.exports;
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in
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{
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###### interface
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options = {
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services.nfs = {
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server = {
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enable = mkOption {
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default = false;
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description = ''
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Whether to enable the kernel's NFS server.
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'';
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};
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exports = mkOption {
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default = "";
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description = ''
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Contents of the /etc/exports file. See
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<citerefentry><refentrytitle>exports</refentrytitle>
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<manvolnum>5</manvolnum></citerefentry> for the format.
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'';
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};
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hostName = mkOption {
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default = null;
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description = ''
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Hostname or address on which NFS requests will be accepted.
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Default is all. See the <option>-H</option> option in
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<citerefentry><refentrytitle>nfsd</refentrytitle>
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<manvolnum>8</manvolnum></citerefentry>.
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'';
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};
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nproc = mkOption {
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default = 8;
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description = ''
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Number of NFS server threads. Defaults to the recommended value of 8.
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'';
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};
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createMountPoints = mkOption {
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default = false;
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description = "Whether to create the mount points in the exports file at startup time.";
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};
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mountdPort = mkOption {
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default = null;
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example = 4002;
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description = ''
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Use fixed port for rpc.mountd, usefull if server is behind firewall.
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'';
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};
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};
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};
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};
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###### implementation
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config = mkIf cfg.enable {
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services.rpcbind.enable = true;
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boot.supportedFilesystems = [ "nfs" ]; # needed for statd and idmapd
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environment.systemPackages = [ pkgs.nfsUtils ];
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environment.etc = singleton
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{ source = exports;
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target = "exports";
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};
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boot.kernelModules = [ "nfsd" ];
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systemd.services.nfsd =
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{ description = "NFS Server";
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wantedBy = [ "multi-user.target" ];
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requires = [ "rpcbind.service" "mountd.service" ];
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after = [ "rpcbind.service" "mountd.service" "idmapd.service" ];
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before = [ "statd.service" ];
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path = [ pkgs.nfsUtils ];
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script =
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''
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# Create a state directory required by NFSv4.
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mkdir -p /var/lib/nfs/v4recovery
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rpc.nfsd \
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${if cfg.hostName != null then "-H ${cfg.hostName}" else ""} \
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${builtins.toString cfg.nproc}
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'';
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postStop = "rpc.nfsd 0";
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serviceConfig.Type = "oneshot";
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serviceConfig.RemainAfterExit = true;
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};
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systemd.services.mountd =
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{ description = "NFSv3 Mount Daemon";
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requires = [ "rpcbind.service" ];
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after = [ "rpcbind.service" ];
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path = [ pkgs.nfsUtils pkgs.sysvtools pkgs.utillinux ];
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preStart =
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''
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mkdir -p /var/lib/nfs
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touch /var/lib/nfs/rmtab
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mountpoint -q /proc/fs/nfsd || mount -t nfsd none /proc/fs/nfsd
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${optionalString cfg.createMountPoints
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''
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# create export directories:
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# skip comments, take first col which may either be a quoted
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# "foo bar" or just foo (-> man export)
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sed '/^#.*/d;s/^"\([^"]*\)".*/\1/;t;s/[ ].*//' ${exports} \
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| xargs -d '\n' mkdir -p
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''
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}
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exportfs -rav
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'';
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restartTriggers = [ exports ];
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serviceConfig.Type = "forking";
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serviceConfig.ExecStart = ''
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@${pkgs.nfsUtils}/sbin/rpc.mountd rpc.mountd \
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${if cfg.mountdPort != null then "-p ${toString cfg.mountdPort}" else ""}
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'';
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serviceConfig.Restart = "always";
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};
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};
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}
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