Btrbk: Difference between revisions

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-[https://digint.ch/btrbk/ Btrbk], a tool for creating snapshots and remote backups of btrfs subvolumes.
+[https://digint.ch/btrbk/ Btrbk], a tool for creating snapshots and remote backups of [[btrfs]] subvolumes.
 == Setup ==
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 </nowiki>}}
-The user has to be created on the remote host and needs root permissions on the commands <code>btrfs</code>, <code>readlink</code> and <code>test</code>, for example via [[sudo]]. For transport stream compression using <code>lz4</code> to work, the package must also be installed on the target host. The target host configuration for Btrbk could look like this:
+For the remote host, configure SSH access for Btrbk:
 {{file|/etc/nixos/configuration.nix|nix|<nowiki>
-security.sudo = {
+services.btrbk = {
-   enable = true;
+   sshAccess = [
-  extraRules = [{
+     {
-     commands = [
+       key = "ssh-ed25519 blah";
-       {
+      roles = [
-        command = "${pkgs.coreutils-full}/bin/test";
+         "target"
-        options = [ "NOPASSWD" ];
+         "info"
-      }
+         "receive"
-      {
+       ];
-         command = "${pkgs.coreutils-full}/bin/readlink";
+     }
-         options = [ "NOPASSWD" ];
+   ];
-      }
-      {
-         command = "${pkgs.btrfs-progs}/bin/btrfs";
-        options = [ "NOPASSWD" ];
-       }
-    ];
-     users = [ "btrbk" ];
-  }];
-   extraConfig = with pkgs; ''
-    Defaults:picloud secure_path="${lib.makeBinPath [
-      btrfs-progs coreutils-full
-    ]}:/nix/var/nix/profiles/default/bin:/run/current-system/sw/bin"
-  '';
 };
-environment.systemPackages = [ pkgs.lz4 ];
 </nowiki>}}
-==== Local <code>/home</code> Snapshots ====
+=== Local <code>/home</code> Snapshots ===
 {{Warning|This is not a backup solution alone. If the entire disk fails, local snapshots will be lost along with it.}}