History

moneromooo-monero 882db8e9d9 tools: log to the correct file		2017-02-12 19:39:59 +00:00
..
blockchain_export.cpp	tools: log to the correct file	2017-02-12 19:39:59 +00:00
blockchain_import.cpp	tools: log to the correct file	2017-02-12 19:39:59 +00:00
blockchain_utilities.h	remove original Cryptonote blockchain_storage blockchain format	2016-08-28 21:27:32 +01:00
blocksdat_file.cpp	Change logging to easylogging++	2017-01-16 00:25:46 +00:00
blocksdat_file.h	extract some basic code from libcryptonote_core into libcryptonote_basic	2017-02-08 22:45:15 +09:00
bootstrap_file.cpp	tools: set requested log level	2017-02-12 18:48:39 +00:00
bootstrap_file.h	extract some basic code from libcryptonote_core into libcryptonote_basic	2017-02-08 22:45:15 +09:00
bootstrap_serialization.h	extract some basic code from libcryptonote_core into libcryptonote_basic	2017-02-08 22:45:15 +09:00
CMakeLists.txt	Change logging to easylogging++	2017-01-16 00:25:46 +00:00
cn_deserialize.cpp	extract some basic code from libcryptonote_core into libcryptonote_basic	2017-02-08 22:45:15 +09:00
fake_core.h	Use batch transactions when syncing	2017-01-14 22:43:06 +00:00
README.md	fix nigglies, as pointed out by moneromooo-monero	2016-09-03 22:36:09 +02:00

README.md

Monero Blockchain Utilities

Introduction

The blockchain utilities allow one to import and export the blockchain.

Usage:

See also each utility's "--help" option.

Export an existing blockchain database

$ monero-blockchain-export

This loads the existing blockchain and exports it to $MONERO_DATA_DIR/export/blockchain.raw

Import the exported file

$ monero-blockchain-import

This imports blocks from $MONERO_DATA_DIR/export/blockchain.raw (exported using the monero-blockchain-export tool as described above) into the current database.

Defaults: --batch on, --batch size 20000, --verify on

Batch size refers to number of blocks and can be adjusted for performance based on available RAM.

Verification should only be turned off if importing from a trusted blockchain.

If you encounter an error like "resizing not supported in batch mode", you can just re-run the monero-blockchain-import command again, and it will restart from where it left off.

## use default settings to import blockchain.raw into database
$ monero-blockchain-import

## fast import with large batch size, database mode "fastest", verification off
$ monero-blockchain-import --batch-size 20000 --database lmdb#fastest --verify off

Import options

--input-file specifies input file path for importing

default: <data-dir>/export/blockchain.raw

--output-file specifies output file path to export to

default: <data-dir>/export/blockchain.raw

--block-stop stop at block number

--database <database type>

--database <database type>#<flag(s)>

database type: lmdb, memory

flags:

The flag after the # is interpreted as a composite mode/flag if there's only one (no comma separated arguments).

The composite mode represents multiple DB flags and support different database types:

safe, fast, fastest

Database-specific flags can be set instead.

LMDB flags (more than one may be specified):

nosync, nometasync, writemap, mapasync, nordahead

Examples:

$ monero-blockchain-import --database lmdb#fastest

$ monero-blockchain-import --database lmdb#nosync

$ monero-blockchain-import --database lmdb#nosync,nometasync