Sanoid Block

Defined in /modules/blocks/sanoid.nix:

{
  imports = [
    inputs.selfhostblocks.nixosModules.sanoid
  ];
}

Provider Contracts

This block provides the following contracts:

dataset backup contract under the shb.sanoid.backup option. It is tested with the generic contract tests.

Usage

Sanoid uses templates to know when snapshots should be kept or pruned.

Default Template

Backup a dataset using the default Sanoid template:

{
  shb.zfs.pools.root.datasets.home = {
    path = "/home";
  };

  shb.sanoid.backup."root/home" = {
    request = shb.zfs.pools.root.datasets.home.datasetBackup.request;
  };
}

This uses the dataset backup contract which is exposed through the ZFS module's shb.zfs.pools.<name>.datasets.<name>.datasetBackup option.

Custom Template

Create a custom template and use it:

{
  shb.zfs.pools.root.datasets.home = {
    path = "/home";
  };

  services.sanoid.templates."yearly" = {
    hourly = 10;
    daily = 3;
    monthly = 3;
    yearly = 2;
  };

  shb.sanoid.backup."root/home" = {
    request = shb.zfs.pools.root.datasets.home.datasetBackup.request;
    template = "yearly";
  };
}

Note we use the upstream services.sanoid.templates option to define the templates.

Without contract

To backup a dataset that does not provide the dataset backup contract, we can just set the request manually:

{
  shb.zfs.pools.root.datasets.home = {
    path = "/home";
  };

  shb.sanoid.backup."root/home" = {
    request.dataset = "root/home";
  };
}

Note the attr name under the shb.sanoid.backup option does not set the dataset name.

Options Reference

id-prefix: blocks-sanoid-options-
list-id: selfhostblocks-blocks-sanoid-options
source: @OPTIONS_JSON@

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