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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Does verification of a world state require downloading the whole ethereum blockchain?

Lets say I'm a new node on the Ethereum network, I download a world state of 500 blocks ago and I download the blockchain from that point to present (500 blocks). Can I verify that the world state I'...
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Geth syncing, how to keep on par with the network in syncronized blocks

I am trying to get data from the last block via my own local node. I do this by calling the RPC API on my node. the issue I have is that the node is not fully synchronized and is never fully ...
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computer configuration for connecting eth 50 or more nodes

I'd like to rent a server to run eth client ,but I am not sure what the computer configuration should be?In my local pc ,I can only connect less than 10 nodes and failed in sync.If I want to connect ...
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RPC returns 0x0 after sync

binance smart chain v1.0.7 When new node complete syncing, RPC returns 0x0 values few hours.Can I fix that? Please help me
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Q: How long does table compacting take?

I was doing a full sync with geth 1.9.22-stable. The sync is paused and the blocks are stuck at sometime on April 15th. The log contains the following lines: 10:30:13.672838 table@compaction L0·173200 ...
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I can no longer access old blocks via RPC in full syncmode?

I have a private network based on geth v1.9.25. I upgraded from v1.8.27. Recently, I saw that I'm unable to access the previous blocks at all. Like, e.g. eth.getBlockByNumber(1) gives me null, even ...
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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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Exactly what data does snap sync download?

Geth 1.10 introduces snap sync, faster way of syncing the blockchain. What data does snap sync actually download? If I run a snap sync with --gcmode archive will I end up with an archive node?
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Ethereum Bucket Synchronisation

The normal operation of Ethereum and other blockchains is to Store new transactions in a mempool, Distribute the bucket, and then mine contents into a block picked from the bucket based on priority of ...
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Unable to synchronize with Ropsten testnet with Geth 1.9.25

For the past two days I've been trying to synchronize with Ropsten testnet using the following command in Geth 1.9.25: ./geth --ropsten --rpc --rpcaddr="0.0.0.0" --rpcapi="eth, web3, ...
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Running --no-ancient-blocks on a synced node

I have an up to date OpenEthereum node that is taking a long time to sync it's ancient blocks, Which has left it syncing a batch of ancient blocks, while falling behind, then syncing up to date. Put ...
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When the ETH node receive a new block ,which will be verified?

I know that when a node receives a transaction, it can verify the RLP format, transaction signature, gas and account nonce value, but I don't know when the node receives a new block, whether will it ...
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Fast node can't cacth up, how to find whats slowing me down?

I'm running a geth fast node but I can't seem to catch up. I did it using a ubuntu in wsl (windows) and everything is on a SSD. However when I do eth.syncing.highestBlock - eth.syncing.currentBlock it'...
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Synchronization Fraud Protection

Suppose I want to synchronize my chain. I download the blocks and state from a Node. What if this node is malicious? It can give me an alternative chain that I won't be able to distinguish from the ...
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How many new nodes join the Ethereum Network per month? How many leave?

I'm researching the cost of serving old blocks to new nodes that need to synchronize and download the whole blockchain. I can indirectly estimate the bandwidth consumed to serve old blocks, if I know ...
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Geth/Parity node - When is a new block imported

Based on my observations and also on block-timestamps-vs-received-timestamp, I suppose that a block "n" is imported into geth or parity node, only after a block "n+1" is mined. Is ...
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Should I use Parity instead of Geth?

I've been trying different things to get Geth to get a fully sync'd Geth node for the past two weeks on a host with 4 cores, 16G of memory and 2TB SSD, to no avail. The only time I get close to being ...
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How can I download the entire Ethereum blockchain?

Is there a way to "get" the whole ethereum blockchain in order to process it locally? For example a link for direct download or via a developer API? Thanks in advance!
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Error in DNS random node sync // lookup les.mainnet.ethdisco.net on ANY-dns-server:53: server misbehaving

The Err: TRACE[02-03|13:52:02.589] Updating DNS discovery root tree=les.mainnet.ethdisco.net err="lookup les.mainnet.ethdisco.net on 192.168.20.1:53: server misbehaving" DEBUG[...
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geth.exe checksum is differant than what is writen on the website but the installers checksum is correct. is this an issue?

I started syncing geth with this command he command: geth --rpc --etherbase <pulbic wallet adrress> --syncmode=fast --cache=2048 and about 25 hours later, the syncing stopped and this error ...
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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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Why Openethereum sync strategy is not the same for different machines?

These days I ran several ETH nodes using openethereum (3.1.0 stable ) . All these node has the same config, same system ( ubuntu 20) , same SSD storage. I found a strange thing: they have different ...
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What does this mean?

First time server owner, geth n00b. I am getting this back from my geth. INFO [12-09|15:30:57.673] Imported new state entries count=2304 elapsed=27.988ms processed=597390231 pending=...
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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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can a node mine without download all of the blocks

if there is a node which doesn't have enough disk space, can i mine without download all of the blocks? i wonder if i can mine ,with just downloading the latest states of ethereum? but i'm not sure ...
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Ethereum Wallet - Hangs at startup + 403 ws error

I have installed the Ethereum Wallet, Ethereum-Wallet-win64-0-11-1 (zip file), as described in the book. When I start up Ethereum Wallet (testnet Ropsten, syncmode “light”) the wallet seems to load ...
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Error syncing new node on private network:no peers available or all tried for download

I am currently trying to run a test node, which recently failed. I have deleted the directory and copied another node's AND tried a reset of the directory but at some point it freezes with this log ...
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What is my progress towards full sync?

I somehow is running geth with full sync. >geth --syncmode full --datadir F:\ethereum-full --keystore F:\keystore --port 30303 --nousb INFO [09-28|10:38:47.956] Starting Geth on Ethereum mainnet......
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1answer
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What is the criteria to resync chain using proof of stake?

In PoW, nodes always resync their own chain to the longest chain in the network in order to respect the work the miners have done. In PoS, as I understand in its simplest form, the miner with the ...
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solidity equivalent for new thread

I want to create a contract, which has a deposit function. But I also want, in the constructor, to start a "thread" that polls an external data source (via oraclize/chainlink or similar) at ...
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Node not syncing on Private Blockchain

Node 1 is mining but Node 2 is not syncing Running admin.peers on Node 1 gives: Running admin.peers on Node 2 gives: Both Nodes are using same genesis block When starting console on Node 2 I used --...
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Can I stop geth when it is halfway done and restart it without loosing all the first half of data?

I have started geth (fresh install) using this command: geth --datadir "my/path" I'm halfway done with sync and would like to restart my PC. Will I loose all the data accumulated so far or ...
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openethereum node disk usage

Using openethereum to sync the eth blockchain, after synced and now the disk space keeps growing 20G per day. The .log file in the db folder keeps growing. After restarting the node, the space will be ...
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Why does ethereum chaindata sometimes sync while syncing?

I am doing a fresh geth 1.9.18-stable sync, which I believe is fast by default. I am keeping an eye on the size of the .ethereum/geth/chaindata/ directory and have noticed that it does not increase ...
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blockchain sync failed and stuck

My machine was crashed and rebooted, but after rebooting, geth sync repeatedly failed at a block, I checked the block number, hash is right though, what should I do? INFO [08-08|09:54:23.184] ...
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Why is my full node stuck always out of sync?

I have a 16g ssd ubuntu, I run the command: geth --ropsten --syncmode=full --gcmode=archive Checking the "eth.syncing" in the console attached, I get always current block is ~100 blocks ...
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block syncing current is smaller than starting why?

I'm sync the chain after a power cycle, so current is behind highest for sure, but I also saw that current is falling behind starting block number, how is this possible? starting is the highest on ...
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What is the best way to store data/information while writing smartcontract?

Smart contracts are immutable. Unless we're 100% sure that our smart-contract is fully functional without any exception we never want to push that in the main net. That's why we have public test net. ...
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Is Ethereum fast sync feasible to get logs

I want to get the logs of an contract address by filtering the even with transfer Event. I cant use Infura for its restrictions and limits. So i want to sync my own ethereum node for myself. Since my ...
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Syncing geth 1.9.15 took too long on HDD raid-0

I've been running full node on a server with this config: Centos 7 11 Tb hdd raid-0 32 Gb ram and I'm using geth 1.9.15-stable-0f77f34b I'm trying to be archive node but syncing took over 1 months ...
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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 ...
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geth full node taking forever to sync

For three days I've been trying to sync a full node. Syncing the last two days has taken about six hours a day. At this rate I won't be able to sync it. It's behind "age=3y8mo5d". This is the ...
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Fast synch mode slowed down after 200Gb

It took 2 days to get to 200gb on geth fast synch mode. But now im moving with approx 5gb a day with a decent internet speed around 100mb/s in Lan. I disconnected and now running on 25mb/s with wifi....
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Geth server syncs itself very slow on SSD storage

This is the second time I've lunched a Geth server with full mode on a server with the resources below: 4Core CPU 16GB RAM 400GB SSD But server keeps staying arount half of highestBlock and its ...
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Is it possible to initiate Geth server from a specific block instead of genesis block?

I tried setting up Geth servers in full node different times, and all of them are always behind half of total max block. So, they cannot be synced easily even after weeks. I would like to know can I ...
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Geth stops working after being fully synced

I have a Geth server in full mode. It was synced fully and I was using it normally for weeks. Today, I wanted to check the synchronization status, so I used geth attach command to enter to the Geth ...
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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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How to duplicate a Geth server?

I have a Geth server which is fully synced, but the second server I have lunched cannot being synced after 2 weeks! I don't know why is this happening, but I decided to test another way. I setup a new ...
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Can we improve the performance of Geth server by setting maxpeers to 0?

I've lunched a Geth server in full node. I think the performance of machine for syncing is not acceptable and needs much more time to be synced fully. I would like to know if I set maxpeers to a low ...
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Why knownStates and pulledStates are always 0 on my full node?

It's the second time that I run a Geth in full node. The first one got synced fully, but the second one did not sync after a week. Both servers have the same configuration and infrastructure. Using ...

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