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nixos/btrbk: add snapshotOnly option

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This commit is contained in:
cy 2024-12-30 14:29:06 -05:00
parent c0851de93d
commit acf701b49a
2 changed files with 15 additions and 1 deletions
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1
doc/manpage-urls.json
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@ -3,6 +3,7 @@
"binfmt.d(5)": "https://www.freedesktop.org/software/systemd/man/binfmt.d.html",
"bootctl(1)": "https://www.freedesktop.org/software/systemd/man/bootctl.html",
"bootup(7)": "https://www.freedesktop.org/software/systemd/man/bootup.html",
"btrbk(1)": "https://digint.ch/btrbk/doc/btrbk.1.html",
"busctl(1)": "https://www.freedesktop.org/software/systemd/man/busctl.html",
"cat(1)": "https://www.gnu.org/software/coreutils/manual/html_node/cat-invocation.html",
"coredump.conf(5)": "https://www.freedesktop.org/software/systemd/man/coredump.conf.html",

15
nixos/modules/services/backup/btrbk.nix
View File

@ -185,6 +185,17 @@ in
Setting it to null disables the timer, thus this instance can only be started manually.
'';
};
snapshotOnly = mkOption {
type = types.bool;
default = false;
description = ''
Whether to run in snapshot only mode. This skips backup creation and deletion steps.
Useful when you want to manually backup to an external drive that might not always be connected.
Use `btrbk -c /path/to/conf resume` to trigger manual backups.
More examples [here](https://github.com/digint/btrbk#example-backups-to-usb-disk).
See also `snapshot` subcommand in {manpage}`btrbk(1)`.
'';
};
settings = mkOption {
type = types.submodule {
freeformType =
@ -353,7 +364,9 @@ in
User = "btrbk";
Group = "btrbk";
Type = "oneshot";
ExecStart = "${pkgs.btrbk}/bin/btrbk -c /etc/btrbk/${name}.conf run";
ExecStart = "${pkgs.btrbk}/bin/btrbk -c /etc/btrbk/${name}.conf ${
if instance.snapshotOnly then "snapshot" else "run"
}";
Nice = cfg.niceness;
IOSchedulingClass = cfg.ioSchedulingClass;
StateDirectory = "btrbk";