Questions tagged [synchronization]

Syntonization is the process where your node / client (geth, Ethereum Wallet, etc) receives the most up to date data from the Ethereum blockchain.

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Why is Geth's "fast" sync now the default, whereas before it wasn't?

As of version 1.6.0, the default method used by Geth for syncing the chaindata is "fast": The default sync mode is --syncmode=fast, for full sync please use --syncmode=full. Previously, the ...
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1answer
291 views

What is the recommended read/write speed for an SSD when syncing an archive node?

I am planning to sync an archive node for research purposes and am preparing to buy the hardware. How does the read/write speed of the SSD affect the sync speed? Is 500 MB/S enough, or would an ...
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770 views

Section processing failed

I am trying to connect a geth node to the network for several days with light sync, and I have encountered a lot of problems. The last to date is there are a lot (like > 100) of error messages that ...
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2answers
191 views

Writing GBytes of data to disk, despite no network activity - what, precisely, is geth doing?

I'm watching geth 1.4.17 on Activity Monitor. Judging by the Network page, it's not doing anything. Rcvd Bytes is 5.9MBytes, and Sent Bytes is 2.6MBytes, and it's been that way for a while now. But ...
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Question on initial sync and Freezer (SSD and HDD)

I've kicked off a fresh fast sync of Geth v1.9.2 and after 3 weeks it's still pulling states (state trie). As per the documentation you can use the Freezer with a HDD as it references old data so ...
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208 views

Error trying to synchronize geth clique client after shutdown

I'm working with a private network using geth clique clients. Each time a node shut downs, (after a power cut, or just killing the geth process), if a try to put it to work again, the node can't ...
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320 views

geth shows last block 0, but on import says all blocks present

I'm trying to restore a corrupt geth DB to a previous version, when I run geth it says I1109 17:36:34.009514 core/blockchain.go:213] Last header: #0 [d4e56740…] TD=17179869184 I1109 17:36:34.009547 ...
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780 views

Synchronisation using geth; DAO fork-check, dropping is the only message recieved

I'm attempting to synchronise with the blockchain using geth on Win7 64bit. Presently pretty much all I'm getting is repeats of the same message; timed out DAO fork-check, dropping (see bottom). ...
4
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1answer
199 views

Can someone share your geth export file with me?

I need to setup an archival node ASAP but the download takes around 1-2 block per second. With this speed it will finish in 2 months (if it doesn't stall, but it does, I have to restart it manually ...
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1answer
96 views

Open Ethereum Syncing

How do I know if openethereum syncing is done and what should I do next? This is what my current state looks like
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1k views

Conflicting reports on sync mode and inability to see balances

I've been trying to maintain a full node for several months. It seemed to be working until I noticed zero balances this morning. etherscan.io site confirmed that balances are not zero, so ...
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539 views

Header broke chain ancestry, Synchronisation failed, dropping peer & retrieved hash chain is invalid

System information Geth version: Geth Version: 1.8.22-stable Git Commit: 7fa3509e2eaf1a4ebc12344590e5699406690f15 Architecture: arm Protocol Versions: [63 62] Network Id: 1 Go Version: go1.11.5 ...
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80 views

Spoofing of totalDifficulty variable

Péter Szilágyi, in his talk in Taipei, claims that totalDifficulty can be spoofed: https://www.youtube.com/watch?time_continue=575&v=qJA6J0mP73w How is that possible? Can the variable only be ...
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174 views

GETH gets out of sync from time to time

GETH tooks 6 days to sync, after that it will get out of sync from time to time. (PC is running with SSD, never shutdown, and network availability is 100% with 500mbps connection). May I know how ...
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124 views

Parity create testing transactions and blocks

For test purposes, I would like to make test blocks including test transactions against main net. For example I would like to make a transaction that sends one ether from 0x1234567... to 0x99999999......
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670 views

Can't complete synchronize the blockchain

I've tried to perform removedb, I've tried to go to different internets (my house, Starbucks), but I still get the same errors: INFO [06-09|20:10:17] Imported new block receipts count=...
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243 views

Ethereum Wallet testnet not synching when mining

I am trying to mine on the testnet. Unfortunately, my Ethereum Wallet (latest version using Geth 1.5.3) kind of gives up doing anything when I click on start Mining on testnet. The time counts up is ...
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588 views

Private network with 2 servers on scaleway

first of all thank you for the great discussions and solution that I've found here. I'm trying to create a private ethereum network to which I want to access with 2 different servers. I am able to ...
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176 views

Raspberry Pi: Geth slow sync every time reboot

Since the first sync (I copy the chaindata folder from my local machine to the RPI), every time I start the RPI it takes hours to just sync 20k blocks. I tried geth --cache=512, etc. I am using ...
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587 views

Why I can not use ./geth --testnet --fast --cache=1024 --jitvm for geth 1.4.7?

I tried two times. Each time block count is for mainnet and there is no any chaindata for testnet
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288 views

Local full node is one block behind mainnet after sync is completed

I just created a local Binance Smart Chain full node on my PC with the following specs: OS: Linux running on Windows Subsystem for Linux Storage: 1TB SSD (Samsung 980 Pro) CPU: AMD Ryzen 7 5800x Ram: ...
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geth: does --gcmode=archive require --syncmode=full?

I can't seem to find a straight answer to this question since snap is relatively new. I'm currently running geth 1.10.3 with --syncmode snap and --gcmode archive, but i'm beginning to think that ...
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27 views

Ropsten light node block number ~1000 greater than it should be

I'm running geth on Ropsten, using geth --ropsten --syncmode "light" --http.addr localhost --http.port 8545 --rpc My most recent block number is 10266786 (and increasing), whereas etherscan....
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55 views

How to convert geth arhive to full node without loosing intermediate state

We have a geth node that runs with --gcmode "archive". However, the recent growth of disk space is unsustainable and we want to change this to a full node. If I stop the node and just re-run ...
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125 views

is "newBlockHeaders" in web3 emits a legit block?

I'm using web3.eth.subscribe('newBlockHeaders') to track transaction I sent to the blockchain. My question is that is the block emitted from "newBlockHeaders" legit or in other words, the block has ...
2
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1answer
349 views

Geth interface panic after weeks of being in sync

After weeks of being in sync and working fine, my Geth just stopped. Upon restart, what started as a long hang on FS Sync Time (repeat output with different values, no further movement beyond ...
2
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1answer
360 views

How does new block propagation, step by step, work in Ethereum?

I'm trying to understand how nodes propagate new valid blocks in Ethereum. Here's my attempt at a step by step how description of the process: 1. Miner constructs a new block and starts iterating ...
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198 views

Geth crashes, “missing trie node”, rlp: expected List

I am struggling with failing geth with my Dapp. I got an error like this: Web3 UnhandledPromiseRejectionWarning: Error: Returned error: missing trie node ...
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1k views

Total number of state entries

I am syncing my ethereum blockchain using the default syncmode. I want to know how many total state entries are there because currently the highest block is 6544578 and the number of pulled states i.e....
2
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1answer
173 views

How to increase stored block states from 128 to 10 000 in Geth?

AFAIK Geth preserves states for the last 128 blocks by default. I would like to keep states for, say 10000 blocks (not turning myself into archive node). Is it possible?
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Why does geth use so much bandwidth in light mode?

So I am running latest geth 1.8 (same thing happens with geth 1.7) and I have noticed that I am always downloading at about 2 megabytes / sec and uploading 120 kilobytes / sec. This is caused by geth ...
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392 views

Transferring parity blockchain data to another machine does not work

For the past several days I have been trying to transfer the blockchain data from an x86_64 machine to an armv7l machine, hoping that I could avoid having to sync from scratch on the latter. However, ...
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457 views

geth node syncing falling behind

I am running geth node on a pretty robust server with lots of disk space, memory and processor (screenshot attached). Once geth fully syncs and I connect mist wallet to it it shows the latest blocks ...
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308 views

Which mode shoud I use for Parity syncing to use trace_ APIs for TXs since current blocks?

I want to use Parity for fast tracing TXs in blocks which will be synced only after my project start. So, if I initially run my Parity node with params —pruning=archive —tracing=on the ...
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155 views

Extremely slow sync after moving to external drive (macOS; thunderbolt)

I was getting low on disk space so I decided to move the blockchain to an external drive with thunderbolt. I did it using Method 2 from this answer: In Mist browser how can I move the data (blockchain)...
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220 views

Mist wallet sync problem

At the moment I can't sync mist wallet for 3 days it download block till 4,102,477 and final hundred bloks are stuck but the numbers below (downloading chain structure) still running and running for a ...
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0answers
2k views

New blocks unbearably slow to sync

For seemingly months now, Geth has been really slow for me. Like, seconds per block: INFO [07-13|23:35:10] Starting peer-to-peer node instance=Geth/v1.6.6-stable-10a45cb5/windows-amd64/...
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493 views

Geth always returning a 0 balance?

i´m mining now for about 3 days with 3 rigs each with over 50Mh/s, but my balance is still 0. Does anybody know why ?
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203 views

What is the blockchain download size and can i reduce it in some way?

I am currently on a connection with a download cap, and was wondering what the current download size for the whole blockchain was, and if i could reduce this download size to under 2 GB? I'm ...
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438 views

Why does syncing with the Ropsten testnet appear to pause?

I am running a node with geth via the command geth --testnet --fast --rpc --rpcapi db,eth,net,web3,personal --cache=1024 --rpcport 8545 --rpcaddr 127.0.0.1 --rpccorsdomain "*" --bootnodes "enode://...
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681 views

block download canceled, geth 1.5.9 would not download blocks

when starting out geth I cant download past block 1292880 does anyone have any idea why it would not download any more blocks?
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Synchronisation issue on Mainnet, testnet and private network

I am just unable to synchronise on any kind of network either main network , testnet and not even on private network. I have updated my geth instance to a newer version - Geth/v1.5.9-stable-a07539fb/...
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423 views

Unable to synchronise with a remote peer

I am running a private network with two geth instances one on my machine and other on an AWS server using the same Genesis file. I am also using a networkid flag to differentiate my private network. ...
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0answers
84 views

Which recent Parity release can be used to synch a node for use with Mist 0.8.8

I am finding Geth exceptionally slow to synch. I found Parity to be much faster. However recent Parity releases make it very complex just to use the Parity client to synchronise and then open Mist. ...
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150 views

How can I sync Mist on a connection with a firewall?

I'm running Ubuntu Gnome 16.10 with the latest version of Mist installed. Whenever I run Mist at home, syncing works without a hitch. But when I run it at school, Mist opens but shows 0 peers. When I ...
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0answers
61 views

Mist RPC node error: invalid address length

Upon launching Mist, I get the following error message: Couldn't connect to RPC node Error: Invalid address length, expected 40 got 4 bytes I can't think of something I did over the last week that ...
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0answers
150 views

Is it possible to avoid sync in Ethereumj, but still register a listener?

I'm attempting to create an contract analysis application using Ethereumj. I don't need to participate as an Ethereum node on the network and thus I'm trying to avoid having to sync the entire ...
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0answers
430 views

Ethereum Wallet Will Not Sync

This is a continuation of my first question re: DAO withdraw problems. I'm running EW (latest update) on my MAC. I never connect with more than two peers and my wallet has not synced correctly since ...
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0answers
379 views

Parity/Mist syncing problem

I tried a few things and after a few attempts and ~24 hours the chain was synced. One thing i tried was to sync my PC clock after "time.is". It always showed a delay. I downloaded a program which ...
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0answers
557 views

Mist started re-syncing and ethers are gone

I downloaded the blockchain with geth --fast --cache=1024 option and size of my blockchain data after download of 2412706 blocks was around 10.9GB. I imported my accounts to keystore files and ...