State sync

With our state sync services you will be able to catch up latest chain block in matter of minutes

State Sync allows a new node to join the network by fetching a snapshot of the application state at a recent height instead of fetching and replaying all historical blocks. Since the application state is generally much smaller than the blocks, and restoring it is much faster than replaying blocks, this can reduce the time to sync with the network from days to minutes.


Stop the service and reset the data

sudo systemctl stop marsd
cp $HOME/.mars/data/priv_validator_state.json $HOME/.mars/priv_validator_state.json.backup
marsd tendermint unsafe-reset-all --home $HOME/.mars

Get and configure the state sync information

LATEST_HEIGHT=$(curl -s $STATE_SYNC_RPC/block | jq -r .result.block.header.height)
SYNC_BLOCK_HASH=$(curl -s "$STATE_SYNC_RPC/block?height=$SYNC_BLOCK_HEIGHT" | jq -r .result.block_id.hash)

sed -i \
  -e "s|^enable *=.*|enable = true|" \
  -e "s|^rpc_servers *=.*|rpc_servers = \"$STATE_SYNC_RPC,$STATE_SYNC_RPC\"|" \
  -e "s|^trust_height *=.*|trust_height = $SYNC_BLOCK_HEIGHT|" \
  -e "s|^trust_hash *=.*|trust_hash = \"$SYNC_BLOCK_HASH\"|" \
  -e "s|^persistent_peers *=.*|persistent_peers = \"$STATE_SYNC_PEER\"|" \

mv $HOME/.mars/priv_validator_state.json.backup $HOME/.mars/data/priv_validator_state.json

Get the wasm folder

# Remove the empty wasm folder if you have an empty one, just in case
rm -r ~/.mars/data/wasm

# Get our wasm folder
wget -O wasmonly.tar.lz4 --inet4-only

# Extract the wasm folder into the right place
lz4 -c -d wasmonly.tar.lz4  | tar -x -C $HOME/.mars/data

# Clean up
rm wasmonly.tar.lz4

Restart the service and check the log

sudo systemctl start marsd && sudo journalctl -u marsd -f --no-hostname -o cat

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