From eb4c43e49f625895670866b89bb56ca641c4eeb7 Mon Sep 17 00:00:00 2001 From: marcoagner <marco@agner.io> Date: Wed, 20 Mar 2019 23:38:10 +0100 Subject: [PATCH] doc: documents how to calculate m_assumed_blockchain_size and m_assumed_chain_state_size on the release process. --- doc/release-process.md | 22 +++++++++++++++++++++- 1 file changed, 21 insertions(+), 1 deletion(-) diff --git a/doc/release-process.md b/doc/release-process.md index eb1f5ad22..8e1f96681 100644 --- a/doc/release-process.md +++ b/doc/release-process.md @@ -23,7 +23,7 @@ Before every minor and major release: Before every major release: * Update hardcoded [seeds](/contrib/seeds/README.md), see [this pull request](https://github.com/bitcoin/bitcoin/pull/7415) for an example. -* Update [`src/chainparams.cpp`](/src/chainparams.cpp) m_assumed_blockchain_size and m_assumed_chain_state_size with the current size plus some overhead. +* Update [`src/chainparams.cpp`](/src/chainparams.cpp) m_assumed_blockchain_size and m_assumed_chain_state_size with the current size plus some overhead (see [this](#how-to-calculate-m_assumed_blockchain_size-and-m_assumed_chain_state_size) for information on how to calculate them). * Update `src/chainparams.cpp` chainTxData with statistics about the transaction count and rate. Use the output of the RPC `getchaintxstats`, see [this pull request](https://github.com/bitcoin/bitcoin/pull/12270) for an example. Reviewers can verify the results by running `getchaintxstats <window_block_count> <window_last_block_hash>` with the `window_block_count` and `window_last_block_hash` from your output. * Update version of `contrib/gitian-descriptors/*.yml`: usually one'd want to do this on master after branching off the release - but be sure to at least do it before a new major release @@ -336,3 +336,23 @@ bitcoin.org (see below for bitcoin.org update instructions). - Optionally twitter, reddit /r/Bitcoin, ... but this will usually sort out itself - Celebrate + +### Additional information + +#### How to calculate `m_assumed_blockchain_size` and `m_assumed_chain_state_size` + +Both variables are used as a guideline for how much space the user needs on their drive in total, not just strictly for the blockchain. +Note that all values should be taken from a **fully synced** node and have an overhead of 5-10% added on top of its base value. + +To calculate `m_assumed_blockchain_size`: +- For `mainnet` -> Take the size of the Bitcoin data directory, excluding `/regtest` and `/testnet3` directories. +- For `testnet` -> Take the size of the `/testnet3` directory. + + +To calculate `m_assumed_chain_state_size`: +- For `mainnet` -> Take the size of the `/chainstate` directory. +- For `testnet` -> Take the size of the `/testnet3/chainstate` directory. + +Notes: +- When taking the size for `m_assumed_blockchain_size`, there's no need to exclude the `/chainstate` directory since it's a guideline value and an overhead will be added anyway. +- The expected overhead for growth may change over time, so it may not be the same value as last release; pay attention to that when changing the variables.