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.

1 files changed, 15 insertions, 0 deletions

diff --git a/src/p2p/net_node.h b/src/p2p/net_node.h
index 0ef2dbb30..09c219a44 100644
--- a/src/p2p/net_node.h
+++ b/src/p2p/net_node.h
@@ -29,6 +29,7 @@
 // Parts of this file are originally copyright (c) 2012-2013 The Cryptonote developers
 
 #pragma once
+#include <array>
 #include <boost/thread.hpp>
 #include <boost/program_options/options_description.hpp>
 #include <boost/program_options/variables_map.hpp>
@@ -127,6 +128,11 @@ namespace nodetool
     virtual bool block_host(const epee::net_utils::network_address &adress, time_t seconds = P2P_IP_BLOCKTIME);
     virtual bool unblock_host(const epee::net_utils::network_address &address);
     virtual std::map<std::string, time_t> get_blocked_hosts() { CRITICAL_REGION_LOCAL(m_blocked_hosts_lock); return m_blocked_hosts; }
+
+    virtual void add_used_stripe_peer(const typename t_payload_net_handler::connection_context &context);
+    virtual void remove_used_stripe_peer(const typename t_payload_net_handler::connection_context &context);
+    virtual void clear_used_stripe_peers();
+
   private:
     const std::vector<std::string> m_seed_nodes_list =
     { "seeds.moneroseeds.se"
@@ -235,7 +241,13 @@ namespace nodetool
     bool parse_peers_and_add_to_container(const boost::program_options::variables_map& vm, const command_line::arg_descriptor<std::vector<std::string> > & arg, Container& container);
 
     bool set_max_out_peers(const boost::program_options::variables_map& vm, int64_t max);
+    bool get_max_out_peers() const { return m_config.m_net_config.max_out_connection_count; }
+    bool get_current_out_peers() const { return m_current_number_of_out_peers; }
+
     bool set_max_in_peers(const boost::program_options::variables_map& vm, int64_t max);
+    bool get_max_in_peers() const { return m_config.m_net_config.max_in_connection_count; }
+    bool get_current_in_peers() const { return m_current_number_of_in_peers; }
+
     bool set_tos_flag(const boost::program_options::variables_map& vm, int limit);
 
     bool set_rate_up_limit(const boost::program_options::variables_map& vm, int64_t limit);
@@ -336,6 +348,9 @@ namespace nodetool
     epee::critical_section m_host_fails_score_lock;
     std::map<std::string, uint64_t> m_host_fails_score;
 
+    boost::mutex m_used_stripe_peers_mutex;
+    std::array<std::list<epee::net_utils::network_address>, 1 << CRYPTONOTE_PRUNING_LOG_STRIPES> m_used_stripe_peers;
+
     cryptonote::network_type m_nettype;
   };