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Understanding Validator Directories​

Before diving into backup procedures, it's crucial to understand the directory structure of your Avail node.

Directory Structure​

The Avail node's directory structure is as follows:

└── chains
    └── da_testnet
        └── db
        └── keystore
        └── network

Directory Descriptions​

  • db: This directory contains the database files, which store blockchain state, transaction history, and other data.
  • keystore: This is where the encrypted key files for your Validator are stored.
  • network: This directory contains configuration files related to network connectivity and peer management.

You can specify a custom directory using the --base-path parameter.

Step 1: Re-Sync or Restore Snapshot​

To Re-Sync from Genesis​

Run the following command:

avail purge-chain

To Restore a Database Snapshot​

  1. Stop your node.
  2. Delete existing chain data.
  3. Download a snapshot from another node.
  4. Restore the snapshot to the db folder.
Warp Sync

Warp sync will be available in future releases, allowing quicker node setup.

Step 2: Backup Keystore​

To Move Keystore to a Backup Node​

  1. Ensure the primary node is offline.
  2. Transfer the keystore to a backup node that is in sync.
Equivocation Risk

Never run two nodes with identical keys at the same time to avoid double-signing.

This method is not recommended for routine transitions between nodes. For safer alternatives, consult the Upgrading Guide.