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account for the utxo rewind when attempting to fix a bad chain init (#3229)

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Antioch Peverell 2020-02-14 15:03:45 +00:00 committed by GitHub
parent 0d2e58e90e
commit 3c040b96e1
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1 changed files with 14 additions and 5 deletions
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19
chain/src/chain.rs
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@ -1542,12 +1542,21 @@ fn setup_head(
break;
} else {
// We may have corrupted the MMR backend files last time we stopped the
// node. If this appears to be the case revert the head to the previous
// header and try again
// node. If this happens we rewind to the previous header,
// delete the "bad" block and try again.
let prev_header = batch.get_block_header(&head.prev_block_h)?;
let _ = batch.delete_block(&header.hash());
head = Tip::from_header(&prev_header);
batch.save_body_head(&head)?;
txhashset::extending(header_pmmr, txhashset, &mut batch, |ext, batch| {
pipe::rewind_and_apply_fork(&prev_header, ext, batch)
})?;
// Now "undo" the latest block and forget it ever existed.
// We will request it from a peer during sync as necessary.
{
let _ = batch.delete_block(&header.hash());
head = Tip::from_header(&prev_header);
batch.save_body_head(&head)?;
}
}
}
}