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UTXO-HD ledger state snapshot converter command in client CLI

· 2 min read
Mithril Team

Introducing the UTXO-HD ledger state snapshot converter command in the Mithril client CLI​

With the release of the new 2524 distribution, the tools command has been added to the Mithril client CLI.

Since the release of Cardano node v.10.4.1, the Mithril aggregator node has been producing snapshots of the Cardano database using the InMemory UTXO-HD flavor.

When restoring a Cardano database snapshot, if the Cardano node is configured to use the on-disk (LMDB) or Legacy format (as in Cardano node v.10.3 and earlier), the ledger state snapshot must be converted before restarting the node.

The new utxo-hd snapshot-converter subcommand simplifies node bootstrapping by converting the restored ledger state snapshot into the required format (LMDB or Legacy).

This conversion tool is currently marked as unstable and is available on Linux, macOS, and Windows.

It operates using the snapshot-converter binary included with the Cardano node distribution.

Usage:

mithril-client --unstable tools utxo-hd snapshot-converter --db-directory $DB_DIRECTORY --cardano-node-version 10.1.4 --utxo-hd-flavor $UTXO_HD_FLAVOR --cardano-network $CARDANO_NETWORK

Parameters:

  • --db-directory: path to the Cardano database directory
  • --cardano-node-version: version used to download the snapshot-converter binary (specific version, eg, 10.1.4, latest, or prerelease)
  • --utxo-hd-flavor: target UTXO-HD flavor (LMDB or Legacy)
  • --cardano-network: Cardano network (preview, preprod or mainnet).

The 'Bootstrap a Cardano node' guide now includes a new optional step that describes how to use the command.

The documentation for the client CLI has been updated accordingly and is available here.

For any inquiries or assistance, contact the team on the Discord channel.