67 lines
1.8 KiB
Nix
67 lines
1.8 KiB
Nix
{ config, lib, pkgs, modulesPath, hostname, ... }:
|
|
|
|
let
|
|
rootDisk = "/dev/disk/by-partlabel/disk-${hostname}-root";
|
|
bootDisk = "/dev/disk/by-partlabel/disk-${hostname}-ESP";
|
|
in
|
|
|
|
{
|
|
boot.initrd.postDeviceCommands = lib.mkAfter ''
|
|
mkdir /btrfs_tmp
|
|
mount ${rootDisk} /btrfs_tmp
|
|
if [[ -e /btrfs_tmp/root ]]; then
|
|
mkdir -p /btrfs_tmp/old_roots
|
|
timestamp=$(date +%Y-%m-%d_%H-%M-%S)
|
|
mv /btrfs_tmp/root "/btrfs_tmp/old_roots/$timestamp"
|
|
fi
|
|
|
|
delete_subvolume_recursively() {
|
|
IFS=$'\n'
|
|
for i in $(btrfs subvolume list -o "$1" | cut -f 9 -d ' '); do
|
|
delete_subvolume_recursively "/btrfs_tmp/$i"
|
|
done
|
|
btrfs subvolume delete "$1"
|
|
}
|
|
|
|
for i in $(find /btrfs_tmp/old_roots/ -maxdepth 1 -mtime +7); do
|
|
delete_subvolume_recursively "$i"
|
|
done
|
|
|
|
btrfs subvolume create /btrfs_tmp/root
|
|
umount /btrfs_tmp
|
|
'';
|
|
|
|
# fileSystems."/" = {
|
|
# device = rootDisk;
|
|
# fsType = "btrfs";
|
|
# options = [ "subvol=root" ];
|
|
# };
|
|
#
|
|
# fileSystems."/persist" = {
|
|
# device = rootDisk;
|
|
# neededForBoot = true;
|
|
# fsType = "btrfs";
|
|
# options = [ "subvol=persist" ];
|
|
# };
|
|
#
|
|
# fileSystems."/nix" = {
|
|
# device = rootDisk;
|
|
# neededForBoot = true;
|
|
# fsType = "btrfs";
|
|
# options = [ "subvol=nix" ];
|
|
# };
|
|
#
|
|
# fileSystems."/boot" = {
|
|
# device = bootDisk;
|
|
# fsType = "vfat";
|
|
# options = [ "fmask=0022" "dmask=0022" "umask=0077" ];
|
|
# };
|
|
#
|
|
# swapDevices = [ {
|
|
# device = "/.swapvol/swapfile";
|
|
# } ];
|
|
|
|
fileSystems."/persist".neededForBoot = true;
|
|
fileSystems."/nix".neededForBoot = true;
|
|
}
|