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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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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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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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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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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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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25 views

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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7 views

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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120 views

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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29 views

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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30 views

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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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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Private Blockchain Chain Spec Sanity Check Please

A private blockchain running for two years runs find on Parity 2.3.9. When upgrading a node to 2.4, sync stops. Peers are still strong (25) but block import repeats at Block X where Block X is the ...
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How much more it will take for Ethereum wallet to Sync - 2019

I has been a week when I tried to Sync Ethereum on SSD VPS. Here are the details - Architecture: x86_64 CPU op-mode(s): 32-bit, 64-bit Byte Order: Little Endian CPU(s): ...
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Geth returning balance 0 [duplicate]

I started my geth using fast sync first and then normal sync once it was almost synced. 'currentBlock' is not increasing since hour and 'highestBlock' keep on increasing. geth --testnet --rpc --cache=...
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Parity synced at not existing block 4839212

I have problem with parity, cant get synchronization in archive mode to end, anything, changing arguments, max-, min-, snapshot-peers, parity verisions do not help. I have blockchain in archive mode ...
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Why would a node stop updating chain?

I am running a private network and one node seems to have stopped updating its chain. It is stuck at block 264 while the others are hundreds past it. It is still connected to the network, but it has ...
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263 views

Can't catchup with Mainnet

16GB Linux, 512 GB SSD, mainly started for RPC purposes only. No mining activity. geth --datadir ./data --syncmode fast console --rpc --rpcport 8545 --rpcaddr "0.0.0.0" --rpccorsdomain "*" --rpcapi "...
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131 views

Unable to Synchronize raspberry pi node my private network

I have created a private network with 3 nodes - two nodes in computer and one in raspberry pi I connected computer and raspberry pi to same network through LAN computer ip: 192.168.122.1 pi ip ...
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50 views

Is it possible to call a Contracts function from a set setTimer? Web3JS

I want to be able to call a function of a contract every 60-120 seconds, in my JavaScript code I have a set timer that runs for down a timer from 120 seconds down to 0 by subtracting 0.01 every 10 ...
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69 views

Geth syncing fast Ropsten too long delays between importing new segments

i have a problem with my Geth Ropsten node. Time between importing new segments of chain is too long. For example logs from my docker container below geth-testnet_1_6d184080c9e1 | INFO [02-11|13:30:...
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703 views

When syncing, the current block is 6154852 and eth.blockNumber shows 0 [duplicate]

I used geth to sync the blocks in mainnet, but the sync last for a long time. eth.syncing shows the current block is 6154852, near the highest block. But eth.blockNumber shows 0. Why does this ...
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can't read past event logs

const event = contractInst.Transfer({},{fromBlock: 0, toBlock: 'latest'}); events.get(function (error, result) { if (!error) { console.log(result); } }); The get ...
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561 views

How do I tell if initial geth sync is done in 'light' mode on testnet

I just installed geth on Windows 10. Then I did the initial sync in light mode on testnet, and my status is as shown on the screenshot below. I have two questions (related): How do I tell if the ...
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130 views

Getting Errors while syncing of blocks (Ropsten network)

Today the block sync with Ropsten network on my machine is giving me following error :- ERROR[06-05|06:59:12] ########## BAD BLOCK ######### Chain config: {ChainID: 3 Homestead: 0 DAO: <nil> ...
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148 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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354 views

Can not sync to ropsten

I have trouble syncing to Ropsten. I have just upgraded geth version to 1.8.7, then i run the command to remove the old chain: geth --testnet removedb. Then the command: geth --testnet --syncmode "...
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2k views

Do you have to download all 'Imported new state entries' before syncing with the highest block?

I'm new to Geth... I'm performing a fast sync using the following command: geth --syncmode "fast" --cache 4096 I had been downloading block data until about 1000 blocks from the highestBlock. Then ...
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90 views

Runtime out of memory on RPi with ethereum node

I have a private network of ethereum with 2 miners on my PC and a node on RPi, after syncing it says: Fatal: runtime: out of memory The sd card is 16Gb and it should have plenty of free space, is RAM ...
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66 views

Gap in the block chain synchronization when interrupted

I was synchronizing the block chain with geth --fast --cache=1024. Then I got the message synchronization failed and I pressed CTRL+C because I had for some reasons to shutdown the VM [I am running ...
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2k views

How to force geth to sync? [duplicate]

Geth is refusing to sync the last 100 blocks on the ropsten testnet, is there a way to force geth to continue syncing from the console?
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473 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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366 views

eth.getBalance(eth.coinbase) = 0, node/client not fully synced yet

I just started to get my fingertips wet with Ethereum and Dapps. After receiving some ether on Ropsten to test with: https://ropsten.etherscan.io/address/0x05c86fc0ec0b80715f1cbc2fa96e86ba18e2eb90 I ...
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1answer
249 views

Rinkeby Ether faucet error [duplicate]

I got funded from the rinkeby faucet but it didn't show up in my wallet. Does anyone have an idea why the sync with the rinkeby blockchain stopped with just 218 remaining?
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498 views

Finding eth balance within geth [duplicate]

I'm pretty new to mining, but I hope someone can help me. when I use eth.syncing, I get this result: currentBlock: 1, highestBlock: 4884563, knownStates: 42878500, pulledStates: 42868030, ...
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209 views

Ropsten testnet connecting to fork before ropsten revival [duplicate]

I was syncing ropsten testnet using geth. Command used- geth --testnet --syncmode "full" At some time, eth.syncing returned- { currentBlock: 353883, highestBlock: 1172714, knownStates: 0, ...
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204 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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181 views

Where does blockchain data come from if there are no peers?

I'm still having problems syncing. I've kept my client up-to-date, I'm using an SSD, and I have 1Gbps/1Gbps internet service. It just hangs with 270 blocks remaining forever. The logs say: INFO [...
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43 views

Can I access last mined block if my node is not there yet?

This might be a stupid question, but I'll ask anyway... I'm currently connected to Ropsten and when I execute eth.blockNumber it says 1853682 (I'm like 300000 blocks away from current last mined ...
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827 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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186 views

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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134 views

Ethereum Wallet and Mist stuck on block 1,699,999 even after updating to latest version of geth

geth version Geth Version: 1.7.2-stable Git Commit: 1db4ecdc0b9e828ff65777fb466fc7c1d04e0de9 Architecture: amd64 Protocol Versions: [63 62] Network Id: 1 Go Version: go1.9.1 Operating System: darwin ...
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787 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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196 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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66 views

Trying to sync my wallet is actually making me depressed [duplicate]

I really don't understand why it's so bad. I got geth light set up via terminal (because it was impossible to download blocks) by following the instructions in another thread and the blocks downloaded ...
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224 views

Ethereum Wallet on Mac - Way Too Slow and uses up CPU! [duplicate]

I am really concerned with the amount of blocks I have to sync and how long it takes/how much power it consumes. It took me 2-3 days to fully sync last week and now I am syncing all day again. It ...
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91 views

ethereumj & etherscan, discrepancies between blocks described- during sync

I've cloned the ethereumj codebase, and in the directory ethereumj/ run it for testnet with the following command: ./gradlew runRopsten However, during the block synchronization process there is a ...
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468 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
247 views

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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109 views

Sent ether to my wallet, been almost two months now and still downloading block chain. what do i do to speed this up? [duplicate]

i've downloaded geth but i don't know if it's doing anything. the terminal says "Fatal: Error starting protocol stack: resource temporarily unavailable" when i try to start it. i'm not really sure ...

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