Title: Corruption: block checksum mismatch ? Tried numerous fixes Post by: PeaMine on June 06, 2017, 04:35:27 AM Edit: Fixed, had to restart OS every 30GB or so for some reason, as the block chain eventually gets hung on updating. Full fresh blockchain download was forced as well.
I had a BSOD on 13.1, Windows 10 64bit Bitcoin Core, display driver issue, not the first time it has happened. When I tried to run it again, it syncs almost to about a few hours (back when it started) and then would say this error: https://github.com/bitcoin/bitcoin/issues/6528 I tried a total reindex, dumped my wallet.dat and tried a fresh 14.1 install, but still getting this error in code. Very odd. Plenty of free space, no memory errors, modern updated Windows 10 64bit computer. Code: 2017-06-06 04:32:08 Pre-allocating up to position 0x400000 in rev00253.dat Title: Re: Corruption: block checksum mismatch ? Tried numerous fixes Post by: achow101 on June 06, 2017, 04:43:44 AM You have a corrupted block on disk. This means that you will need to resync the entire blockchain. Delete the blocks folder inside of the Bitcoin Core datadir and then start Bitcoin Core and let it sync.
Title: Re: Corruption: block checksum mismatch ? Tried numerous fixes Post by: PeaMine on June 06, 2017, 04:50:28 AM You have a corrupted block on disk. This means that you will need to resync the entire blockchain. Delete the blocks folder inside of the Bitcoin Core datadir and then start Bitcoin Core and let it sync. Thanks, tried 2 fresh installs, on 2 different SSD, and version 13 and 14.1 with new wallets.For some reason it just stops around April 7th 2015. Also tried -reindex as well which re-downloaded everything, same issue, total of 5 block chain downloads. I posted in that one persons thread because it seems to be an issue with the blockchain download, as the wallet version and drive doesn't seem to matter. Could of course be OS related, so I'm going over that now. Title: Re: Corruption: block checksum mismatch ? Tried numerous fixes Post by: PeaMine on June 06, 2017, 05:01:57 AM I just restarted my computer, then tried to resume it.
It hung for a few seconds on the block it normally crashes on, then made it past it! It's still going, so perhaps every X blocks, I need to restart when doing a full download? Not sure. i7, 16GB of RAM, SSD. Title: Re: Corruption: block checksum mismatch ? Tried numerous fixes Post by: achow101 on June 06, 2017, 05:10:33 AM Thanks, tried 2 fresh installs, Did you delete the blockchain or just uninstall and reinstall? If you only uninstalled and reinstalled, that won't help at all because none of the data is removed from the disk.on 2 different SSD, and version 13 and 14.1 with new wallets. If you actually did a full resync where the blockchain actually redownloaded (and reindex does not do this, I'll get to that below), then this error is indicative of hardware failure. In that case, I suggest you run hardware diagnostics to find what is wrong.For some reason it just stops around April 7th 2015. Also tried -reindex as well which re-downloaded everything, same issue, total of 5 block chain downloads. Reindex does not redownloaded anything. All it does is reindex what is already on disk and then it will do the normal catch-up process with whatever blocks that you don't have downloaded. Reindexing is the process of building the databases that have all of the indexes of where to find blocks and transactions. It absolutely does not redownload the blockchain even though it looks like it.The only way to redownload the blockchain is to actually delete the blocks folder within the datadir and start Bitcoin Core. Nothing else will cause a resync; reindexing, rescanning, reinstalling, etc. will not cause a resync. I posted in that one persons thread because it seems to be an issue with the blockchain download, as the wallet version and drive doesn't seem to matter. His issue was completely unrelated. You clearly did not read the thread.Could of course be OS related, so I'm going over that now. Title: Re: Corruption: block checksum mismatch ? Tried numerous fixes Post by: PeaMine on June 06, 2017, 04:01:35 PM Thanks, tried 2 fresh installs, Did you delete the blockchain or just uninstall and reinstall? If you only uninstalled and reinstalled, that won't help at all because none of the data is removed from the disk.on 2 different SSD, and version 13 and 14.1 with new wallets. If you actually did a full resync where the blockchain actually redownloaded (and reindex does not do this, I'll get to that below), then this error is indicative of hardware failure. In that case, I suggest you run hardware diagnostics to find what is wrong.For some reason it just stops around April 7th 2015. Also tried -reindex as well which re-downloaded everything, same issue, total of 5 block chain downloads. Reindex does not redownloaded anything. All it does is reindex what is already on disk and then it will do the normal catch-up process with whatever blocks that you don't have downloaded. Reindexing is the process of building the databases that have all of the indexes of where to find blocks and transactions. It absolutely does not redownload the blockchain even though it looks like it.The only way to redownload the blockchain is to actually delete the blocks folder within the datadir and start Bitcoin Core. Nothing else will cause a resync; reindexing, rescanning, reinstalling, etc. will not cause a resync. I posted in that one persons thread because it seems to be an issue with the blockchain download, as the wallet version and drive doesn't seem to matter. His issue was completely unrelated. You clearly did not read the thread.Could of course be OS related, so I'm going over that now. I'm using the portable version with -datadir, all on a single SSD dedicated entirely to the blockchain, application, and all app data but nothing else. All data, hidden, application, wallet, appdata, etc, all were fully empty before proceeding. Manual backup of the wallet.dat and a dump as well. When I used -reindex, it re-downloaded the entire blockchain, twice. It prompted an error before re-downloading. Only solution that fixed it stopping on that one single block, was an OS restart after a proper shutdown of bitcoind. On my Windows 7 backup system, it never finished downloading the blockchain, same issue as the other person, but indeed, not related to this specific case. Still, two systems that have worked without issue for Core for over 3 years, same wallet file etc, chances of both messing up at the same time is quite odd. In regards to the other thread, I experienced the same issue they had on my Windows 7 machine: No error, no progress, just stuck sometimes. Other times it will error out with the debug code snip. https://bitcointalk.org/index.php?topic=1951354.0 So I assumed that since 2 machines went stopped working with Core, on the same day after 3+ years, maybe it was related. Obviously not though now, as a restart of the OS fixed everything it seems and resumed progress. |