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nixfiles/hosts/palladium/backup-scripts.nix

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{ pkgs, ... }:
let
cb-mount = pkgs.writeScriptBin "cb-mount" ''
#!${pkgs.bash}/bin/bash
DEVICE=/dev/disk/by-path/pci-0000:00:12.0-ata-2-part1
cryptsetup luksOpen ''${DEVICE} external-drive
mkdir -p /mnt/external-drive
mount /dev/mapper/external-drive /mnt/external-drive
'';
cb-sync = pkgs.writeScriptBin "cb-sync" ''
#!${pkgs.bash}/bin/bash
set -e
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# Check, if the something is mounted in our sycdir
if grep -qs '/mnt/external-drive' /proc/mounts
then
echo "fine"
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else
echo "Please plug in a backup drive and mount it using cb-mount"
exit 1
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fi
SNAPSHOT_NAME=$(${pkgs.borgbackup}/bin/borg list --last 1 --short /mnt/palladium/clerie-backup)
${pkgs.borgbackup}/bin/borg mount /mnt/palladium/clerie-backup::$SNAPSHOT_NAME /mnt/clerie-backup-mount
${pkgs.bindfs}/bin/bindfs /mnt/clerie-backup-mount/mnt/clerie-backup /mnt/clerie-backup
${pkgs.borgbackup}/bin/borg create /mnt/external-drive/clerie-backup::$SNAPSHOT_NAME /mnt/clerie-backup
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umount /mnt/clerie-backup
${pkgs.borgbackup}/bin/borg unmoumt /mnt/clerie-backup-mount
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'';
cb-unmount = pkgs.writeScriptBin "cb-unmount" ''
#!${pkgs.bash}/bin/bash
umount /mnt/external-drive
cryptsetup luksClose external-drive
'';
in {
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environment.systemPackages = with pkgs; [ pkgs.cryptsetup cb-mount cb-sync cb-unmount ];
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}