From b750fb27b0f20e9443827732b69a504a76036430 Mon Sep 17 00:00:00 2001 From: moneromooo-monero Date: Sun, 29 Apr 2018 23:30:51 +0100 Subject: Pruning The blockchain prunes seven eighths of prunable tx data. This saves about two thirds of the blockchain size, while keeping the node useful as a sync source for an eighth of the blockchain. No other data is currently pruned. There are three ways to prune a blockchain: - run monerod with --prune-blockchain - run "prune_blockchain" in the monerod console - run the monero-blockchain-prune utility The first two will prune in place. Due to how LMDB works, this will not reduce the blockchain size on disk. Instead, it will mark parts of the file as free, so that future data will use that free space, causing the file to not grow until free space grows scarce. The third way will create a second database, a pruned copy of the original one. Since this is a new file, this one will be smaller than the original one. Once the database is pruned, it will stay pruned as it syncs. That is, there is no need to use --prune-blockchain again, etc. --- src/cryptonote_basic/cryptonote_format_utils.cpp | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) (limited to 'src/cryptonote_basic/cryptonote_format_utils.cpp') diff --git a/src/cryptonote_basic/cryptonote_format_utils.cpp b/src/cryptonote_basic/cryptonote_format_utils.cpp index 82428f196..f6daaab95 100644 --- a/src/cryptonote_basic/cryptonote_format_utils.cpp +++ b/src/cryptonote_basic/cryptonote_format_utils.cpp @@ -196,6 +196,7 @@ namespace cryptonote bool r = tx.serialize_base(ba); CHECK_AND_ASSERT_MES(r, false, "Failed to parse transaction from blob"); CHECK_AND_ASSERT_MES(expand_transaction_1(tx, true), false, "Failed to expand transaction data"); + tx.invalidate_hashes(); return true; } //--------------------------------------------------------------- @@ -225,6 +226,22 @@ namespace cryptonote return true; } //--------------------------------------------------------------- + bool is_v1_tx(const blobdata_ref& tx_blob) + { + uint64_t version; + const char* begin = static_cast(tx_blob.data()); + const char* end = begin + tx_blob.size(); + int read = tools::read_varint(begin, end, version); + if (read <= 0) + throw std::runtime_error("Internal error getting transaction version"); + return version <= 1; + } + //--------------------------------------------------------------- + bool is_v1_tx(const blobdata& tx_blob) + { + return is_v1_tx(blobdata_ref{tx_blob.data(), tx_blob.size()}); + } + //--------------------------------------------------------------- bool generate_key_image_helper(const account_keys& ack, const std::unordered_map& subaddresses, const crypto::public_key& out_key, const crypto::public_key& tx_public_key, const std::vector& additional_tx_public_keys, size_t real_output_index, keypair& in_ephemeral, crypto::key_image& ki, hw::device &hwdev) { crypto::key_derivation recv_derivation = AUTO_VAL_INIT(recv_derivation); -- cgit v1.2.3