hosts/patate/backup/rsync-backup.nix

   1 { pkgs, ... }:
   2 with builtins;
   3 {
   4   home-manager.users.sevy = {
   5     systemd.user.services."rsync-term@" = {
   6       Unit = {
   7         Description = "rsync terminal for: %I";
   8         After = [ "graphical-session.target" ];
   9         StopWhenUnneeded = false;
  10       };
  11       Service = {
  12         Type = "simple";
  13         ExecStart = pkgs.writeShellScript "rsync-term" ''
  14           FS_LABEL=$1
  15           set -eux
  16           ${pkgs.xterm}/bin/xterm -fg white -bg black -fa Monospace -fs 6 \
  17             -title "rsync backup to: $FS_LABEL" -e "journalctl --user -f -o short \
  18             -u rsync-backup@$FS_LABEL"
  19         '' + " %I";
  20       };
  21     };
  22     systemd.user.services."rsync-backup@" = {
  23       Unit = {
  24         Description = "rsync backup: %i";
  25         Wants = [ "rsync-term@%i.service" ];
  26         BindsTo = [ "sys-subsystem-usb-%i.device" ];
  27       };
  28       Service = {
  29         Type = "oneshot";
  30         SyslogIdentifier = "rsync-backup@%i";
  31         ExecStart = pkgs.writeShellScript "rsync-backup" ''
  32           FS_LABEL=$1
  33           set -eux
  34           DEVICE=$(${pkgs.util-linux}/bin/blkid -l -o device -t LABEL="$FS_LABEL")
  35           while ! ${pkgs.glib}/bin/gio mount --device "$DEVICE"
  36             do test ! -d /run/media/sevy/"$FS_LABEL" || break
  37                sleep 1
  38             done
  39           ${pkgs.rsync}/bin/rsync --verbose --itemize-changes \
  40             --partial --recursive --times \
  41             --compress-level=0 --delete --delete-before \
  42             /run/media/sevy/"$FS_LABEL" \
  43             ~sevy/Documents/
  44           systemctl --user --no-block stop rsync-term@"$FS_LABEL"
  45         '' + " %I";
  46       };
  47     };
  48   };
  49 }