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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260 views

I updated my geth instance to 1.10.12-stable, but after update it is not syncing anymore

I updated my geth instance to latest stable version (currently 1.10.12). After it stopped synchronization. It loads new data, but the data is not synced. When I attach to geth console. Here is the ...
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2answers
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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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Can't launch mist wallet. Stuck after pressing 'launch application' in windows 10

Hi. I downloaded Mist wallet and then after some time when the 'launch application' button came up, I pressed that. However, now I only see the following image on my screen and the figures shown ...
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How much it takes for all nodes to sync?

I think the title is clear. I wanted to know how much it takes for all nodes to sync on ethereum,binance and fantom network?
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1answer
391 views

Mist reloading chain structure from scratch

How come every time I close and open ethereumwallet it starts downloading the chain structure from scratch?
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1answer
427 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 ...
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824 views

How can I estimate the time remaining to complete a sync?

I would like to know approximately how long it will take my geth node to complete syncing. There was a previous question that was similar to mine, but less specific, and it was closed in favor of a ...
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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
54 views

What's the ancient folder in Geth?

I'm new to the nodes world and i'm trying to setup my own with Geth on Windows. I was wondering what the /ancient folder does for the Node. Please correct if i'm wrong, but synthetically this is what ...
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What does it mean when geth is repeatedly generating, aborting and resuming snapshots and unindexing transactions? [duplicate]

What does the repetition of the following five, sometimes six logs mean regarding the state of the geth client? Generating state snapshot Aborting state snapshot generation Resuming state snapshot ...
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2answers
217 views

How block are validated in a private blockchain

I have running a private blockchain with 4 nodes, and when i'm creating my Dapp, i have specified for the web3 address only one node ( Ip; port, RCP) So, my question is , how the others nodes ...
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1answer
439 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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867 views

syncing forever

I'm trying to mine using the commands geth --rpc and ethminer on an ubuntu 16.04 machine. Sometimes it works, but often after I restart my PC, I get the error "Network syncing, will start miner ...
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521 views

Ethereum wallet

Like many others I'm really struggling with setting up the ethereum wallet. I deleted the chaindata folder in order to make the download process quicker. Unfortunately I closed the ethereum wallet ...
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1answer
815 views

Why does sync eat up all RAM and hang my computer?

I have installed the Wallet v0.9.1 but have not been able to reach sync. It starts at good speed (1000 blocks/sec), but after 1 hour and 3.5Mblocks it slows down and I notice my 8GB RAM is taken. ...
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Unable to sync rinkeby and unable to query eth.syncing due to lack of IPC endpoint

I'm trying to sync rinkeby with the go-ethereum client (geth 1.10.14-stable). I've been starting the process a couple of times and then interrupted it again, and started again and so on. Now, the ...
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1answer
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Some json-rpc requests are not served by a possibly unsynced full node on localhost

I want to make some JSON RPC calls to my rinkeby node, which I have set up via: $ geth --rinkeby --http --http.api personal,eth,net,web3 --cache=4096 --http.port 3337 I seem to have problems ...
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Synchronisation failed, dropping peer peer=... err="retrieved hash chain is invalid: block in the future" in private geth ethereum network

Geth Version: 1.10.7-stable-12f0ff40 Operating system: Windows 10 Home I have created a Private Ethereum Blockchain with 2 nodes in seperated command prompts: geth --http --http.port "8085" -...
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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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How are nodes synced in ethereum?

I was wondering how ethereum nodes are synced and also if there is a formula for calculating this time? For example, if I wish to start running a new node, how is my new node synced with the ...
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1answer
143 views

What are options re: transferring ETH and ERC-20 tokens out of Mist without having to synch?

I have some ETH and many custom tokens sitting in a Mist wallet that will take many days to synch. I assume I can use the 'transfer from' function to move these tokens from this wallet without having ...
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140 views

"Head state missing, repairing" after private network crash. Any way to recover the blocks?

I'm running a small PoA private network (2 nodes, one signer, one for API purposes). Yesterday, the system both nodes are running on crashed due to an unrelated issue. As a result, both geth instances ...
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2answers
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Sync from snapshot

I'm trying to do a sync on geth node from snap for 7 days, however that never ends. so That's filling up my SSD that has 3TB (currently It is using 76% from my SSD) and I think that's not normal my ...
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1answer
231 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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Ethereum network Sync up with Matic network

We are able to deploy our ERC20 token into Matic Network and it is working fine. But we have few questions here to understand how Matic works with Ethereum Mainnet Once the contract is deployed in ...
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1answer
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Where does geth download it's data, the actual blockchain state?

We know that we can sync with current blockchain status with geth, for example, or any other similar things. If I run geth in console I can see ... INFO [11-16|22:27:56.602] Imported new block ...
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Difference between a pruned and unpruned blockchain

At the Berlin Blockchain Meetup, Gustav Simonsson teased the Homestead release coming soon (tm) and we were discussing blockchain bloat and the current size of the Ethereum blockchain. We discussed ...
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Block sealing failed err="unauthorized validator"

I ran a validator/miner node with a snapshot from https://github.com/binance-chain/bsc-snapshots and the following cmd (after geth account import ...): docker run -d --restart=always -v /data:/root/....
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1answer
181 views

Known states for testnet on fast sync mode Nov - 2018

Whats the current knownStates for testnet on fast sync mode Nov - 2018 Is there an online service which provides the current states of the ethereum testnet. It been several days and --testnet fast ...
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1answer
511 views

Node lags behind 100 blocks, states are finished syncing

I run my geth node with the following command: ./geth --cache 8192 --syncmode full It has been syncing for a long time, and it looks like it has finished syncing: > eth.syncing { currentBlock: ...
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57 views

Latency between block production and data reception

I am trying to measure the latency between the block production (eg block.timestamp) and the data reception (eg Date.now()); I tried with different nodes (Infura, Amazon Managed Blockchain and my very ...
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If I am fast syncing Ropsten, and i close the command prompt or Mist and reopen Mist, will it continue to fast sync?

Just wondering since I was trying to fast sync Ropsten with Mist and it came to a block number around 600,000 and stopped, so I closed Mist and reopened it and it only got to the "started swarm" part. ...
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Mining causes nodes to stop syncing on Besu

I am trying to test my private network by running multiple nodes at one time. I am using a config file that lists the boot node as well as the same genesis file. The boot node is on a linux server, ...
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1answer
401 views

Geth Mismatch of the highestBlock while syncing

While syncing on my Ubuntu 16.04 machine on ropsten yesterday the highestBlock matched the current highestBlock > eth.syncing { currentBlock: 2587196, **highestBlock: 3528808**, knownStates: ...
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Best way to get balances of multitude of addresses

I have a list/array/map of addresses. I want to keep track of their balances on the front end. Currently, the front end is calling the balanceOf() function for each address and updating based on the ...
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1answer
200 views

Do I really need to sync Geth even if I already have synced Ethereum Wallet?

I already have Ethereum Wallet installed and synced, fully working. But I am working on a cryptocurrencies-based project and I needed the JSON-RPC, so I installed Geth. However Geth seems not to be ...
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1answer
149 views

Mist Wallet Synch Stuck - Not coder/geek

I too have the 'synch stuck' syndrome suffered by many others. I don't think I've ever been this frustrated but am trying to be patient. After 12-24 hours I get stuck around 2.4m block after multiple ...
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28 views

Can GETH run quickly and be always up-to-date with an AWS c5 instance?

I've noticed that most people who are using AWS to run their ethereum node are using the i3 (or i3en) instance type for its high I/O performance with the attached SSD. For my particular use case, I ...
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195 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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1answer
26 views

Private network desync

This is a similar to question to this one I have just setup 2 private nodes on AWS EC2 via geth, which are connected to each other, and have 1 "Hello World" smart contract already mined. ...
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1answer
211 views

Geth syncing - Jan 18, how much time should wait before I call it quits. (First time miner)

After 3 days; current status: > eth.syncing { currentBlock: 4829460, highestBlock: 4829665, knownStates: 19675738, pulledStates: 19646971, startingBlock: 4828906 } Getting ti
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1answer
150 views

iOS node not syncing with private BKC

I use the Geth framework and Swift 4 to boot a node inside an iOS 11.0 app. This node connects to my local BKC (to 4 nodes to be precise). Here are some tests I made : if I start 3 computer nodes ...
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32 views

Fastest way to download Ethereum state with geth?

I want to do some experiments that require that I access Ethereum state db. I have a standard laptop with SSD drive. From what I've read, synchronizing in "fast" mode may be endless on a ...
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1answer
312 views

What should be done first: extract snapshot or create genesis?

bsc documentation describes a method of accelerating creation of a full-node using a snapshot. However, it is not clear in which order these commands should be executed and if it makes any difference: ...
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How can I find out what the highest block is?

I'm syncing up a new node. How can I find out what the latest block is so that I know how far I've got to go?
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Ethereum Geth never finishes sync, block OK, states past 1b, Debian VM Docker SSD

yes, I know this has been asked before, but it's got me stumped. I've build and run Ethereum nodes using Geth on Windows and RasPi 4 fine before. This time I'm using Docker on a Debian VM on and SSD ...
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31 views

Export aleth(ethereum c++) to geth (go-ethereum) blockchain data

I have the private aleth network, but want to test some new features, so I want to move to geth. But didn't find any instructions how to get it to work. Here is a couple of questions: Is it anywhere ...
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3answers
1k views

Number of state entries needed before geth node is synced up with Ropsten

I am currently syncing a Geth node with the Ropsten network. Currently the download in the terminal show a neverending stream of Imported new state entries. I understand that I have to wait for all of ...
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1answer
31 views

Does data in memory variables get added to the blockchain? How does consensus work for memory?

If a function call involves a memory variable, does the data in memory get added to the blockchain history? If no, how come others can validate the transaction? Is the data only deleted after a block ...
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1answer
177 views

txpool.content return empty object

I opened a full node successfully (I succeed getting data from e.g eth_getTransactionByHash). I'm trying to get all pending transactions, but I get: > txpool.content { pending: {}, queued: {} } ...

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