7175dcb107
This reduces the attack surface for data that can come from malicious sources (exported output and key images, multisig transactions...) since the monero serialization is already exposed to the outside, and the boost lib we were using had a few known crashers. For interoperability, a new load-deprecated-formats wallet setting is added (off by default). This allows loading boost format data if there is no alternative. It will likely go at some point, along with the ability to load those. Notably, the peer lists file still uses the boost serialization code, as the data it stores is define in epee, while the new serialization code is in monero, and migrating it was fairly hairy. Since this file is local and not obtained from anyone else, the marginal risk is minimal, but it could be migrated later if needed. Some tests and tools also do, this will stay as is for now. |
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|---|---|---|
| .. | ||
| blockchain_ancestry.cpp | ||
| blockchain_blackball.cpp | ||
| blockchain_depth.cpp | ||
| blockchain_export.cpp | ||
| blockchain_import.cpp | ||
| blockchain_prune_known_spent_data.cpp | ||
| blockchain_prune.cpp | ||
| blockchain_stats.cpp | ||
| blockchain_usage.cpp | ||
| blockchain_utilities.h | ||
| blocksdat_file.cpp | ||
| blocksdat_file.h | ||
| bootstrap_file.cpp | ||
| bootstrap_file.h | ||
| bootstrap_serialization.h | ||
| CMakeLists.txt | ||
| README.md | ||
Monero Blockchain Utilities
Copyright (c) 2014-2020, The Monero Project
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