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author | Gregor Kleen <gkleen@yggdrasil.li> | 2017-12-17 00:23:35 +0100 |
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committer | Gregor Kleen <gkleen@yggdrasil.li> | 2017-12-17 00:23:35 +0100 |
commit | 10537afaa7749e38fdb6a5e67be91afaabb47dc8 (patch) | |
tree | a9855c803d17ca88048cf865cefababce6281a76 | |
parent | e5195df4dbb63f3f05c8f502970cdba41c8c5311 (diff) | |
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btrfs-snapshots on hel
-rw-r--r-- | custom/btrfs-snapshots.nix | 52 | ||||
-rw-r--r-- | hel.nix | 3 |
2 files changed, 55 insertions, 0 deletions
diff --git a/custom/btrfs-snapshots.nix b/custom/btrfs-snapshots.nix new file mode 100644 index 00000000..7caf7a30 --- /dev/null +++ b/custom/btrfs-snapshots.nix | |||
@@ -0,0 +1,52 @@ | |||
1 | { config, lib, pkgs, ... }: | ||
2 | |||
3 | with lib; | ||
4 | |||
5 | let | ||
6 | cfg = config.services.btrfs-snapshots; | ||
7 | |||
8 | snapshotMount = str: "${cfg.mountPoint}/${cfg.mountPrefix}${str}" | ||
9 | in { | ||
10 | options = { | ||
11 | |||
12 | services.btrfs-snapshots = { | ||
13 | enable = mkEnableOption "btrfs snapshot unit"; | ||
14 | |||
15 | mountPoint = mkOption { | ||
16 | type = types.path; | ||
17 | default = "/mnt"; | ||
18 | }; | ||
19 | |||
20 | mountPrefix = mkOption { | ||
21 | type = types.str; | ||
22 | default = "snapshot-"; | ||
23 | }; | ||
24 | |||
25 | readOnly = mkOption { | ||
26 | type = types.bool; | ||
27 | default = true; | ||
28 | }; | ||
29 | }; | ||
30 | |||
31 | }; | ||
32 | |||
33 | |||
34 | config = mkIf cfg.enable { | ||
35 | |||
36 | systemd.services."btrfs-snapshot@" = { | ||
37 | enable = true; | ||
38 | path = with pkgs; [btrfs-progs]; | ||
39 | |||
40 | unitConfig = { | ||
41 | AssertPathIsDirectory = ${cfg.mountPoint}; | ||
42 | }; | ||
43 | |||
44 | serviceConfig = with pkgs; { | ||
45 | ExecStart = "${btrfs-progs}/bin/btrfs subvolume snapshot ${optionalString cfg.readOnly "-r"} %f ${snapshotMount "%i"}"; | ||
46 | RemainAfterExit = true; | ||
47 | ExecStop = "${btrfs-progs}/bin/btrfs subvolume delete ${snapshotMount "%i"}"; | ||
48 | }; | ||
49 | }; | ||
50 | |||
51 | }; | ||
52 | } | ||
@@ -14,6 +14,7 @@ | |||
14 | ./custom/tinc/def.nix | 14 | ./custom/tinc/def.nix |
15 | ./custom/tinc/yggdrasil.nix | 15 | ./custom/tinc/yggdrasil.nix |
16 | ./custom/uucp.nix | 16 | ./custom/uucp.nix |
17 | ./custom/btrfs-snapshots.nix | ||
17 | ]; | 18 | ]; |
18 | 19 | ||
19 | system.stateVersion = "16.09"; | 20 | system.stateVersion = "16.09"; |
@@ -515,5 +516,7 @@ | |||
515 | systemd.targets."multi-user".wants = ["gpscfg.timer"]; | 516 | systemd.targets."multi-user".wants = ["gpscfg.timer"]; |
516 | 517 | ||
517 | systemd.services."NetworkManager-wait-online".enable = true; | 518 | systemd.services."NetworkManager-wait-online".enable = true; |
519 | |||
520 | services.btrfs-snapshots.enable = true; | ||
518 | } | 521 | } |
519 | 522 | ||