docs/01_nodeos/04_replays/how-to-replay-from-a-blocks.log.md
Once you have obtained a copy of the blocks.log file which you wish to replay the blockchain from, copy it to your data/blocks directory, backing up any existing contents if you wish to keep them, and remove the blocks.index, forkdb.dat, shared_memory.bin, and shared_memory.meta.
The table below sumarizes the actions you should take for each of the files enumerated above:
| Folder name | File name | Action |
|---|---|---|
| data/blocks | blocks.index | Remove |
| data/blocks | blocks.log | Replace this file with the blocks.log you want to replay |
| data/state | fork_db.dat | Remove |
| data/blocks/reversible | shared_memory.bin | Remove |
| data/blocks/reversible | shared_memory.meta | Remove |
You can use blocks-dir = "blocks" in the config.ini file, or use the --blocks-dir command line option, to specify where to find the blocks.log file to replay.
nodeos --replay-blockchain \
--plugin eosio::producer_plugin \
--plugin eosio::chain_api_plugin \
--plugin eosio::http_plugin \
>> nodeos.log 2>&1 &