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I have used --gcmode=archive to download all the state tries and eth.syncing returns false meaning my node is in sync. When I execute eth.getBalance for blocks closer to the current block I obtain the correct value but for older blocks I get "Error: missing trie node". Is there any other way of obtaining balance of an account in all the blocks from the genesis block?

  • Are you doing it for the main net? With which --syncmode did you launch it? – Xavier Leprêtre B9lab Jul 6 '18 at 16:50
  • I did not put anything. I think it will be default then. I am working with main net. – Sandy... Jul 7 '18 at 8:25
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You must have launched with --syncmode fast --gcmode archive. If you did not say any --syncmode, then it was fast.

The fast mode means that it downloads a full state at a recent block, say n. Then it computes all new states, for blocks n + m from this full state. archive means that it will not discard old states, like n, n+1 as it advances. But it still does not have any state prior to n.

Which means that:

  • you can query .getBalance(me, n) and me, n + m.
  • you can not query .getBalance(me, 0) to me, n - 1.

If you want to have all states, including prior to the time you launched it, you have to delete your chain data and restart it with -syncmode full --gcmode archive.

I hope you have a good SSD...

  • Thanks for your answer. Actually I followed the documentation here - blog.ethereum.org/2018/02/14/geth-1-8-iceberg%C2%B9 .. It says that - Trie pruning is enabled on all --syncmode variations (including --syncmode=full). If you are running an archive node where you would like to retain all historical data, you should disable pruning via --gcmode=archive. Anyways I will try with --syncmode full as well. – Sandy... Jul 8 '18 at 15:18
  • Yes, pruning means "removing what exists". What you need is to disable pruning, plus a way to recreate the missing ones -> syncmode – Xavier Leprêtre B9lab Jul 9 '18 at 10:33

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