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zfsborg: restructure config

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Motiejus Jakštys
2023-09-11 17:25:12 +03:00
parent 866347b042
commit 583f74cf3f
2 changed files with 76 additions and 69 deletions
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126
modules/base/zfsborg/default.nix
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@@ -24,11 +24,12 @@ in {
default = null;
};
mountpoints = lib.mkOption {
dirs = lib.mkOption {
default = {};
type = attrsOf (submodule (
type = listOf (submodule (
{...}: {
options = {
mountpoint = lib.mkOption {type = path;};
repo = lib.mkOption {type = str;};
paths = lib.mkOption {type = listOf path;};
patterns = lib.mkOption {
@@ -42,65 +43,68 @@ in {
};
};
config = lib.mkIf config.mj.base.zfsborg.enable {
systemd.services."zfsborg-snapshot-dirs" = let
mountpoints = lib.unique (lib.attrNames config.mj.base.zfsborg.mountpoints);
in {
description = "zfsborg prepare snapshot directories";
wantedBy = ["multi-user.target"];
serviceConfig = {
Type = "oneshot";
ExecStart =
builtins.map
(d: "${pkgs.coreutils}/bin/mkdir -p ${d}/.snapshot-latest")
mountpoints;
RemainAfterExit = true;
config = with config.mj.base.zfsborg;
lib.mkIf enable {
systemd.services."zfsborg-snapshot-dirs" = let
mountpoints = lib.unique (lib.catAttrs "mountpoint" dirs);
in {
description = "zfsborg prepare snapshot directories";
wantedBy = ["multi-user.target"];
serviceConfig = {
Type = "oneshot";
ExecStart =
builtins.map
(d: "${pkgs.coreutils}/bin/mkdir -p ${d}/.snapshot-latest")
mountpoints;
RemainAfterExit = true;
};
};
services.borgbackup.jobs = builtins.listToAttrs (
map (attrs: let
mountpoint = builtins.getAttr "mountpoint" attrs;
fs = builtins.getAttr mountpoint config.fileSystems;
in
assert fs.fsType == "zfs";
assert lib.assertMsg
config.mj.base.unitstatus.enable
"config.mj.base.unitstatus.enable must be true"; {
name = lib.strings.sanitizeDerivationName mountpoint;
value =
{
doInit = true;
repo = attrs.repo;
encryption = {
mode = "repokey-blake2";
passCommand = "cat ${config.mj.base.zfsborg.passwordPath}";
};
paths = attrs.paths;
extraArgs = "--remote-path=borg1";
compression = "auto,lzma";
startAt = attrs.backup_at;
readWritePaths = let p = mountpoint + "/.snapshot-latest"; in [p];
preHook = mountLatest mountpoint fs.device;
postHook = umountLatest mountpoint;
prune.keep = {
within = "1d";
daily = 7;
weekly = 4;
monthly = 3;
};
}
// lib.optionalAttrs (attrs ? patterns) {
patterns = attrs.patterns;
}
// lib.optionalAttrs (sshKeyPath != null) {
environment.BORG_RSH = ''ssh -i "${config.mj.base.zfsborg.sshKeyPath}"'';
};
})
dirs
);
mj.base.unitstatus.units = let
sanitized = map lib.strings.sanitizeDerivationName (lib.catAttrs "mountpoint" dirs);
in
map (n: "borgbackup-job-${n}") sanitized;
};
services.borgbackup.jobs = lib.mapAttrs' (mountpoint: attrs: let
fs = builtins.getAttr mountpoint config.fileSystems;
in
assert fs.fsType == "zfs";
assert lib.assertMsg
config.mj.base.unitstatus.enable
"config.mj.base.unitstatus.enable must be true"; {
name = lib.strings.sanitizeDerivationName mountpoint;
value =
{
doInit = true;
repo = attrs.repo;
encryption = {
mode = "repokey-blake2";
passCommand = "cat ${config.mj.base.zfsborg.passwordPath}";
};
paths = attrs.paths;
extraArgs = "--remote-path=borg1";
compression = "auto,lzma";
startAt = attrs.backup_at;
readWritePaths = let p = mountpoint + "/.snapshot-latest"; in [p];
preHook = mountLatest mountpoint fs.device;
postHook = umountLatest mountpoint;
prune.keep = {
within = "1d";
daily = 7;
weekly = 4;
monthly = 3;
};
}
// lib.optionalAttrs (attrs ? patterns) {
patterns = attrs.patterns;
}
// lib.optionalAttrs (config.mj.base.zfsborg.sshKeyPath != null) {
environment.BORG_RSH = ''ssh -i "${config.mj.base.zfsborg.sshKeyPath}"'';
};
})
config.mj.base.zfsborg.mountpoints;
mj.base.unitstatus.units = let
mounts = config.mj.base.zfsborg.mountpoints;
sanitized = map lib.strings.sanitizeDerivationName (lib.attrNames mounts);
in
map (n: "borgbackup-job-${n}") sanitized;
};
}