summaryrefslogtreecommitdiff
path: root/sys/boot/stack/btrfs-toplevel-multidrive.nix
blob: 52db86566919b764bb584446924284d2dee9d044 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
{
  config,
  lib,
  ...
}:
with lib; let
  cfg = config.local.boot.stack.btrfsToplevelMultidrive;
in {
  options.local.boot.stack.btrfsToplevelMultidrive = {
    enable = mkEnableOption "filesystem stack: persistent btrfs toplevel with optional hdd drive";

    toplevel = {
      device = mkOption {
        type = types.str;
      };

      ssd = mkOption {
        type = types.bool;
      };

      snapshot = mkOption {
        type = types.bool;
        default = false;
      };

      root = mkOption {
        type = types.str;
      };

      pivot = mkOption {
        type = types.str;
        default = "/";
      };
    };

    secondary = {
      device = mkOption {
        type = types.str;
      };

      ssd = mkOption {
        type = types.bool;
      };

      snapshot = mkOption {
        type = types.bool;
        default = false;
      };

      home = mkOption {
        type = types.str;
      };

      pivot = mkOption {
        type = types.str;
        default = "/";
      };
    };
  };

  config = mkIf cfg.enable {
    local.btrfs = {
      mounts = {
        "/" = {
          inherit (cfg.toplevel) device ssd;
          subvol = cfg.toplevel.root;
        };

        "/toplevel" = {
          inherit (cfg.toplevel) device ssd;
          subvol = cfg.toplevel.pivot;
        };

        #FIXME: Este nombre es legacy
        "/hdd" = {
          inherit (cfg.secondary) device ssd;
          subvol = cfg.secondary.pivot;
        };

        "/home" = {
          inherit (cfg.secondary) device ssd;
          subvol = cfg.secondary.home;
        };
      };

      snapper =
        optionalAttrs cfg.toplevel.snapshot
        {
          root = "/";
        }
        // optionalAttrs cfg.secondary.snapshot {
          home = "/home";
        };
    };

    # Asegura que /hdd sea descifrado antes de intentar montar /home
    fileSystems."/home".depends = ["/hdd"];
  };
}