nix-git/modules/btrbk/default.nix
2023-11-15 13:52:21 +01:00

97 lines
2.7 KiB
Nix

{ config, pkgs, ... }:
let
ssd-subvolumes = {
"arch.p1st.de" = {};
"blogger.privacy1st.de" = {};
"changedetection.p1st.de" = {};
"cloud.privacy1st.de" = {};
"git.privacy1st.de" = {};
"mastodon-toot-follower.privacy1st.de" = {};
"money.p1st.de" = {};
"music.privacy1st.de" = {};
"paste.p1st.de" = {};
"proxy" = {};
"recipe.privacy1st.de" = {};
"traggo.privacy1st.de" = {};
};
hdd-subvolumes = {
"cloud.privacy1st.de" = {};
# MediaKollektiv: 796 GiB
"cloud.media-kollektiv.eu" = {};
};
in
{
# For each instance, a service and timer will be created:
# systemctl list-unit-files | grep btrbk
# #=> btrbk-<instance-name>.service
# #=> btrbk-<instance-name>.timer
#
# If onCalendar is set to `null`, one can manually execute btrbk with
# sudo systemctl start btrbk-<instance-name>.service
# Print generated systemd unit file
# cat "$(systemctl show -P FragmentPath btrbk-<instance-name>.service)"
# #=> ExecStart=/nix/store/53nvbl1c0w14524j7v3fpn9py31yi2hb-btrbk-0.32.6/bin/btrbk -c /etc/btrbk/local-backup.conf run
services.btrbk = {
extraPackages = [ pkgs.lz4 ];
# Lowest scheduling priority.
niceness = 19;
# Set of btrbk instances. The instance named btrbk is the default one.
instances = {
"local-snapshot" = {
onCalendar = "hourly";
#onCalendar = "*:0/15"; # Every 15min
settings = {
timestamp_format = "long";
#stream_compress = "lz4";
snapshot_preserve_min = "2d";
snapshot_preserve = "24h 7d 4w 6m";
volume."/jc-data" = {
snapshot_dir = "/snap";
subvolume = ssd-subvolumes;
};
volume."/mnt/data/jc-data" = {
snapshot_dir = "/mnt/data/snap";
subvolume = hdd-subvolumes;
};
};
};
"local-backup" = {
# Run daily, 5 minutes after `local-snapshot` 0'o'clock timer.
onCalendar = "00:05";
settings = {
timestamp_format = "long";
#stream_compress = "lz4";
# Create backups.
target_preserve_min = "no";
target_preserve = "7d 4w 6m";
# Don't create or delete snapshots.
snapshot_preserve_min = "all";
snapshot_create = "no";
volume."/jc-data" = {
snapshot_dir = "/snap";
target = "/mnt/backup/snap";
subvolume = ssd-subvolumes;
};
volume."/mnt/data/jc-data" = {
snapshot_dir = "/mnt/data/snap";
target = "/mnt/backup/snap2";
subvolume = hdd-subvolumes;
};
};
};
};
};
}