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made borg use btrfs snapshot

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This commit is contained in:
mc-fucker 2023-01-29 08:46:21 +01:00
parent 708df543ec
commit 6cee9ab06c
1 changed files with 27 additions and 12 deletions
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39
modules/borg.nix
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@ -1,20 +1,23 @@
{ config, ... }:
{ config, pkgs, ... }:
let
backuppath = "/backup/snapshot";
in
{
services.borgbackup.jobs.default = {
paths = [
"/etc"
"/home"
"/root"
"/var"
"${backuppath}/etc"
"${backuppath}/home"
"${backuppath}/root"
"${backuppath}/var"
];
exclude = [
"*/.cache"
"/home/*/build"
"/var/log"
"/var/lib/nextcloud/data/appdata_ocnc33s4dl6i/preview"
"/var/lib/postgresql/*/"
"/var/lib/containers"
"/var/lib/rancher/k3s/agent/containerd/io.containerd.snapshotter.v1.overlayfs/snapshots"
"${backuppath}*/.cache"
"${backuppath}/home/*/build"
"${backuppath}/var/log"
"${backuppath}/var/lib/nextcloud/data/appdata_ocnc33s4dl6i/preview"
"${backuppath}/var/lib/postgresql/*/"
"${backuppath}/var/lib/containers"
"${backuppath}/var/lib/rancher/k3s/agent/containerd/io.containerd.snapshotter.v1.overlayfs/snapshots"
];
repo = "borg@haus.mc-fucker.cool:/mnt/sdf1/borg/${config.networking.hostName}";
compression = "zstd";
@ -22,6 +25,18 @@
environment.BORG_RSH = "ssh -o 'StrictHostKeyChecking=no' -i /root/.ssh/id_borg";
extraCreateArgs = "--verbose --stats";
startAt = "03:00";
preHook = ''if [[ -d ${backuppath} ]]; then
btrfs subvolume delete ${backuppath}
fi
btrfs subvolume snapshot / ${backuppath}''; #create snapshot for consistent filesystem
postCreate = "btrfs subvolume delete ${backuppath}"; #delete snapshot again
};
systemd.services.borgbackup-job-default = {
path = [ pkgs.btrfs-progs ];
serviceConfig = {
ReadWritePaths = [ "/backup" ];
};
};
}