Stuck at 25.85% of processing for 24 hours now #11576

<!--- Remove sections that do not apply -->

This issue tracker is only for technical issues related to bitcoin-core.

General bitcoin questions and/or support requests and are best directed to the Bitcoin StackExchange.

For reporting security issues, please read instructions at https://bitcoincore.org/en/contact/.

Stuck at 25.86% of past transaction processing for 24 hours now?

Can you reliably reproduce the issue?

If so, please list the steps to reproduce below:

1. Install BitCoin Core
2. Let it start building the sync database.
3. Starts sync processing and then stays stuck at 25.85%. This is the second time I installed it and tried to sync the transaction database. Using the most recent version.

Expected behaviour

It should finish building the sync database.

Actual behaviour

Stuck at 25.86% now for 24 hours.

Screenshots.

If the issue is related to the GUI, screenshots can be added to this issue via drag & drop.

What version of bitcoin-core are you using?

List the version number/commit ID, and if it is an official binary, self compiled or a distribution package such as PPA.

Bitcoin Core version v0.15.0.1 (64-bit)

Copyright (C) 2009-2017 The Bitcoin Core developers

Machine specs:

• OS: Windows 7 updated
• CPU: I7
• RAM: 24G
• Disk size: 1 TB
• Disk Type (HD/SDD): SDD with lots of free space

Any extra information that might be useful in the debugging process.

This is normally the contents of a debug.log or config.log file. Raw text or a link to a pastebin type site are preferred. 2017-10-29 19:07:16 ERROR: ConnectBlock: Consensus::CheckBlock: bad-txnmrklroot, hashMerkleRoot mismatch (code 16) 2017-10-29 19:07:16 ERROR: ConnectTip(): ConnectBlock 0000000000000000140b0f27b96b2de2d044b2cb5aaebb0327defbccfa43afdd failed 2017-10-29 19:07:16 ERROR: ConnectBlock: Consensus::CheckBlock: bad-txnmrklroot, hashMerkleRoot mismatch (code 16) 2017-10-29 19:07:16 ERROR: ConnectTip(): ConnectBlock 0000000000000000140b0f27b96b2de2d044b2cb5aaebb0327defbccfa43afdd failed 2017-10-29 19:07:16 ERROR: ConnectBlock: Consensus::CheckBlock: bad-txnmrklroot, hashMerkleRoot mismatch (code 16) 2017-10-29 19:07:16 ERROR: ConnectTip(): ConnectBlock 0000000000000000140b0f27b96b2de2d044b2cb5aaebb0327defbccfa43afdd failed 2017-10-29 19:07:16 ERROR: ConnectBlock: Consensus::CheckBlock: bad-txnmrklroot, hashMerkleRoot mismatch (code 16) 2017-10-29 19:07:16 ERROR: ConnectTip(): ConnectBlock 0000000000000000140b0f27b96b2de2d044b2cb5aaebb0327defbccfa43afdd failed 2017-10-29 19:07:16 ERROR: ConnectBlock: Consensus::CheckBlock: bad-txnmrklroot, hashMerkleRoot mismatch (code 16) 2017-10-29 19:07:16 ERROR: ConnectTip(): ConnectBlock 0000000000000000140b0f27b96b2de2d044b2cb5aaebb0327defbccfa43afdd failed 2017-10-29 19:07:16 ERROR: ConnectBlock: Consensus::CheckBlock: bad-txnmrklroot, hashMerkleRoot mismatch (code 16) 2017-10-29 19:07:16 ERROR: ConnectTip(): ConnectBlock 0000000000000000140b0f27b96b2de2d044b2cb5aaebb0327defbccfa43afdd failed

Go to options and increase the value in "Size of database cache" and restart the client.

Your node is rejecting the chain. Most likely this is the result of hardware failure (disk corrupting data, memory corruption or CPU malfunction). You may wish to ensure your CPU is properly cooled/not overclocked, run a memory test, and switch to a checksumming filesystem).

On October 29, 2017 3:10:54 PM EDT, arnoldvilleneuve notifications@github.com wrote:

<!--- Remove sections that do not apply -->

This issue tracker is only for technical issues related to bitcoin-core.

General bitcoin questions and/or support requests and are best directed to the Bitcoin StackExchange.

For reporting security issues, please read instructions at https://bitcoincore.org/en/contact/.

Stuck at 25.86% of past transaction processing for 24 hours now?

Can you reliably reproduce the issue?

If so, please list the steps to reproduce below:

1. Install BitCoin Core
2. Let it start building the sync database.
3. Starts sync processing and then stays stuck at 25.85%. This is the second time I installed it and tried to sync the transaction database. Using the most recent version.

Expected behaviour

It should finish building the sync database.

Actual behaviour

Stuck at 25.86% now for 24 hours.

Screenshots.

If the issue is related to the GUI, screenshots can be added to this issue via drag & drop.

What version of bitcoin-core are you using?

List the version number/commit ID, and if it is an official binary, self compiled or a distribution package such as PPA.

Bitcoin Core version v0.15.0.1 (64-bit)

Copyright (C) 2009-2017 The Bitcoin Core developers

Machine specs:

• OS: Windows 7 updated
• CPU: I7
• RAM: 24G
• Disk size: 1 TB
• Disk Type (HD/SDD): SDD with lots of free space

Any extra information that might be useful in the debugging

process. This is normally the contents of a debug.log or config.log file. Raw text or a link to a pastebin type site are preferred. 2017-10-29 19:07:16 ERROR: ConnectBlock: Consensus::CheckBlock: bad-txnmrklroot, hashMerkleRoot mismatch (code 16) 2017-10-29 19:07:16 ERROR: ConnectTip(): ConnectBlock 0000000000000000140b0f27b96b2de2d044b2cb5aaebb0327defbccfa43afdd failed 2017-10-29 19:07:16 ERROR: ConnectBlock: Consensus::CheckBlock: bad-txnmrklroot, hashMerkleRoot mismatch (code 16) 2017-10-29 19:07:16 ERROR: ConnectTip(): ConnectBlock 0000000000000000140b0f27b96b2de2d044b2cb5aaebb0327defbccfa43afdd failed 2017-10-29 19:07:16 ERROR: ConnectBlock: Consensus::CheckBlock: bad-txnmrklroot, hashMerkleRoot mismatch (code 16) 2017-10-29 19:07:16 ERROR: ConnectTip(): ConnectBlock 0000000000000000140b0f27b96b2de2d044b2cb5aaebb0327defbccfa43afdd failed 2017-10-29 19:07:16 ERROR: ConnectBlock: Consensus::CheckBlock: bad-txnmrklroot, hashMerkleRoot mismatch (code 16) 2017-10-29 19:07:16 ERROR: ConnectTip(): ConnectBlock 0000000000000000140b0f27b96b2de2d044b2cb5aaebb0327defbccfa43afdd failed 2017-10-29 19:07:16 ERROR: ConnectBlock: Consensus::CheckBlock: bad-txnmrklroot, hashMerkleRoot mismatch (code 16) 2017-10-29 19:07:16 ERROR: ConnectTip(): ConnectBlock 0000000000000000140b0f27b96b2de2d044b2cb5aaebb0327defbccfa43afdd failed 2017-10-29 19:07:16 ERROR: ConnectBlock: Consensus::CheckBlock: bad-txnmrklroot, hashMerkleRoot mismatch (code 16) 2017-10-29 19:07:16 ERROR: ConnectTip(): ConnectBlock 0000000000000000140b0f27b96b2de2d044b2cb5aaebb0327defbccfa43afdd failed

-- You are receiving this because you are subscribed to this thread. Reply to this email directly or view it on GitHub: https://github.com/bitcoin/bitcoin/issues/11576

Silly question (since I'm having the same issue). Why the Bitcoin Core is not rejecting the problematic block (erase it from database) and refetch the correct one? According to the amount of questions which can be found on bitcointalk and reddit, this issue is quite common among the users.

In the case of hardware issue (in this case corrupting a block once it has been downloaded), there isn't much we can do. If anything it is often better to fail to sync so that a user is alerted to the fact that their hardware is unstable during load so that they can reduce clock speed, improve cooling, etc instead of them relying on buggy hardware to hold large sums of money.