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41 lines
1.6 KiB
Markdown
41 lines
1.6 KiB
Markdown
# Database snapshot guide
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For this guide we will be taking a snapshot of a parachain and relay chain. Please note we are using a local chain here
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`rococo_local_testnet` and `local_testnet`. Live chains will have different values
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*Please ensure that the database is not in current use, i.e no nodes are writing to it*
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# How to prepare database for a relaychain
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To prepare snapshot for a relay chain we need to copy the database.
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```
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mkdir -p relaychain-snapshot/alice/data/chains/rococo_local_testnet/db/
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cp -r chain-data/alice/data/chains/rococo_local_testnet/db/. relaychain-snapshot/alice/data/chains/rococo_local_testnet/db/
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tar -C relaychain-snapshot/alice/ -czf relaychain.tgz data
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```
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# How to prepare database for a parachain
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To prepare snapshot for a parachain we need to copy the database for both the collator node (parachain data) and
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validator (relay data)
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```
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#Parachain data
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mkdir -p parachain-snapshot/charlie/data/chains/local_testnet/db/
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# Relay data
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mkdir -p parachain-snapshot/charlie/relay-data/chains/rococo_local_testnet/db/
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cp -r chain-data/charlie/data/chains/local_testnet/db/. parachain-snapshot/charlie/data/chains/local_testnet/db/
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cp -r chain-data/charlie/relay-data/chains/rococo_local_testnet/db/. parachain-snapshot/charlie/relay-data/chains/rococo_local_testnet/db/
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tar -C parachain-snapshot/charlie/ -czf parachain.tgz data relay-data
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```
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# Restoring a snapshot
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Zombienet will automatically download the `*.tgz` file to the respective folder for a run. However you can also download
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it manually, just ensure you extract the tar file in the correct directory, i.e. the root directory
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`chain-data/charlie/`
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