export_import_block.md

export/import block

Godwoken support export/import layer2 blocks from/to existing node database.

Export block

To export layer2 block, using godwoken export-block subcommand. It will open database in readonly mode. You don't need to exit running godwoken process to export block.

example

godwoken export-block -c config.toml --output-path ./blocks_testnet_v1 --from-block 0 --to-block 100000 --show-progress

A binary file blocks_testnet_v1_702359ea7f073558921eb50d8c1c77e92f760c8f8656bde4995f26b8963e2dd8_0_100000 will be generated.

NOTE: 702359ea7f073558921eb50d8c1c77e92f760c8f8656bde4995f26b8963e2dd8 is testnet_v1 rollup type hash.

Import block

To import layer2 block, using godwoken import-block subcommand. You must exit running godwoken process to execute this subcommand.

It will insert blocks into database store.path configurated in config.toml.

NOTE: a valid ckb_url in config.toml is required, because it needs to fetch secp data from ckb genesis block to open database.

example

godwoken import-block -c config.toml --source-path ./blocks_testnet_v1_702359ea7f073558921eb50d8c1c77e92f760c8f8656bde4995f26b8963e2dd8_0_100000 --to-block 50000 --show-progress