69 lines
1.7 KiB
Nix
69 lines
1.7 KiB
Nix
{
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config,
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inputs,
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lib,
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pkgs,
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...
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}: {
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imports = [
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inputs.impermanence.nixosModules.impermanence
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];
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environment.persistence."/persist" = {
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enable = true;
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hideMounts = true;
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directories = [
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# config.services.minecraft-servers.dataDir
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"/etc/nixos"
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"/etc/NetworkManager/system-connections"
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"/etc/secureboot"
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"/var/db/sudo"
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"/var/keys"
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"/var/log"
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"/var/lib/bluetooth"
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"/var/lib/nixos"
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"/var/lib/systemd/coredump"
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"/var/lib/tailscale"
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{
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directory = "/var/lib/colord";
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user = "colord";
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group = "colord";
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mode = "u=rwx,g=rx,o=";
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}
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];
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files = [
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"/etc/machine-id"
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];
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};
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boot.initrd.postResumeCommands = let
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# https://github.com/nix-community/impermanence?tab=readme-ov-file#btrfs-subvolumes
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script = pkgs.writeShellScriptBin "rollback" ''
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mkdir -p /btrfs_tmp
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mount -o subvol=/ /dev/mapper/cryptroot /btrfs_tmp
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if [[ -e /btrfs_tmp/root ]]; then
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mkdir -p /btrfs_tmp/old_roots
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timestamp=$(date --date="@$(stat -c %Y /btrfs_tmp/root)" "+%Y-%m-%-d_%H:%M:%S")
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mv /btrfs_tmp/root "/btrfs_tmp/old_roots/$timestamp"
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fi
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delete_subvolume_recursively() {
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IFS=$'\n'
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for i in $(btrfs subvolume list -o "$1" | cut -f 9- -d ' '); do
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delete_subvolume_recursively "/btrfs_tmp/$i"
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done
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btrfs subvolume delete "$1"
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}
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for i in $(find /btrfs_tmp/old_roots/ -maxdepth 1 -mtime +30); do
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delete_subvolume_recursively "$i"
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done
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btrfs subvolume create /btrfs_tmp/root
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umount /btrfs_tmp
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'';
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in "${builtins.readFile (lib.getExe script)}";
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}
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