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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279 views

Last couple hundred blocks of syncing?

I notice that when I leave my computer off for a couple hours or something and then restart and have to resync the chain that it always slows down considerably near around 200 blocks behind the "...
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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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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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How to check sync status

How can I check simplest way am I synced with blockchain? When I executed geth attach command and typed in: 100 * eth.syncing.currentBlock / eth.syncing.highestBlock The outcome sounds about 99....
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Persistent “deep transaction reorg” whilst syncing full geth node

Whilst syncing a new full node using the geth comand "geth --syncmode full", every other line after a few hundred blocks I see the following: WARN [12-02|02:30:46] Skipping deep transaction reorg ...
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how to make geth import faster? [duplicate]

my computer is mac and it has run geth import for about a week, and it's 4000000 block now. I have ran geth --fast before and it's slow too. I am in china, is it something i can do to make it faster?
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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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1k views

sync parity or geth starting from block x

I'm having issues syncing geth and parity as detailed in other posts. What would be ideal is if you could sync starting from the current block only as I dont really need historical blocks anyway. Is ...
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105 views

Can I reclaim ETH from the DAO using a different wallet?

I have started up my old ubuntu machine after taking a break from crypto for a while. I had bought ETH and DAO tokens before the attack. I would now like to reclaim my ETH from the DAO but ...
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2answers
9k views

Ethereum Blockchain Size

I synchnorized Ethereum blockchain in my AWS Ubuntu 16.04 server with 110GB Hard Disk. The command I used is geth --syncmode=fast --cache=1024 According to bitinfocharts, the total size of Ethereum ...
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389 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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279 views

Can I start downloading the blockchain, power off the computer, and restart later?

I have an RPi 3b, the OS is set up and internet works. I'm a programmer, know how to use basic linux (but I'm not great at being a linux admin), but I'm new to RPi and setting up a cryptocurrency ...
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266 views

Merkle tree child hashing process

Each non leaf node of a Merkle tree is just the hash of the concatenation of it's children. Does this literally mean stick the 2 hashes together or is there a more intricate process involved? i.e. ...
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787 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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261 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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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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480 views

Parity 1.7.8 is syncing the last few blocks very slowly

I have been using the parity client to download the ethereum database for the last few days. Despite using the warp sync to download it, I havent been able to download the last few blocks fast enough. ...
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1answer
402 views

Geth syncing gets close to latest block and then stops

I have a new node that gets close to the latest block and then stops syncing. Each time I stop and then restart geth, it will sync back up to about 75 to 100 blocks away from the latest block and ...
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505 views

Geth sync stuck on a block

I'm running the go-ethereum node with geth on my server. It sync the blocks in the beginning smoothly but after some time it stuck on a block from last two days. Any help will be appreciated. eth....
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Running a full Parity node with SSD disks in a RAID 10 setup?

I am planning to run a new full node, from scratch, using Parity. From what I understand, it is imperative to use SSD disk(s) in order to do be able to do initial sync and keep up with the network. ...
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164 views

Mandatory to do a full sync for token creation and contract deployment?

As the heading says, is it mandatory to do a full sync for token creation and contract deployment? I have downloaded the etherelum wallet and geth, and right now it is syncing as I write this post. ...
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Status of Ethereum Sync using Geth for Beginners

I am new to ethereum and right now getting the ethereum blockchain using geth with syncmode=fast and cache=5120 It's been quite some time the sync being running (about 24 hours) and still the process ...
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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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Reward for running a full node on some blockchain?

For today, it takes a lot of time to install & sync a full node of the most popular blockchains - Bitcoin, Ethereum, etc. That's why so many people use only light wallets like Jaxx or Electrum. ...
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763 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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645 views

What is the use case of Parity's passive sync mode?

The Parity Ethereum client has four sync modes, two of which are active and passive. Active makes perfect sense to me, Parity continuously syncs the chain. However passive says "parity syncs initially,...
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May last block on watch only client become stale?

Let we have an ethereum node which is for a watch purposes only (it doesn't create any transactions, just updates it's replica of the whole chain). To get notifications about top blocks in the chain ...
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BAD BLOCK and “invalid difficulty” error when syncing ropsten testnet in geth

I had been connecting to the ropsten testnet for the past couple months in geth with no issues, and able to quickly sync to the latest block. Now when I connect to ropsten as follows (as I've always ...
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1answer
823 views

Parity: avoid experimental `--light` but store minimal blockchain

Using parity --light is experimental, and this issue is currently blocking an initial sync. How can I avoid using --light but store minimal blockchain on disk? Something like: [footprint] ...
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326 views

Can the Merkel trie state entry download period of a fast sync extend between geth runs, and how many trie state entries currently exist?

When initial synchronization (i.e., from block 1) is performed with --fast, both blocks and chainstates are downloaded separately. In my current ongoing download (and apparently others) full ...
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3k views

Run mist without downloading blockchain

How do I prevent mist from ever downloading the blockchain? I have a small HDD and can't afford the disk space.
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Ethereum hard-fork: Geth Syncing Issue

I have been running a geth testnet instance for the last 2 months and learning this. But after the hard-fork i have seen the syncing to be extremely slow. I updated geth to Version: 1.7.0-stable. eth....
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332 views

Problem with first sync in revived Ropsten Ethereum

Hello everyone i would like to sync to Ropsten test network for the first time.I use linux mint.First i followed the instruction here and execute the commands sudo apt-get install software-properties-...
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Ropsten: Ether is not in my account, but I think it should be [duplicate]

I'm a bit confused... I've created an Ethereum account in Ropsten, and have fed it some Ether (more than 20) via faucet. Yesterday I synched my node with Ropsten and I could see the balance correctly,...
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287 views

Does use of geth removedb zero my account balance?

Geth syncing is stuck for several hours. I want to delete my blockchain using geth removedb. Will this affect my account? Will my balance become zero?
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679 views

eth.syncing “highestBlock” meaning

I am syncing the blockchain with geth and I type "eth.syncing" to check the progress. I notice that "highestBlock" does not change. It's the same as it was when I started syncing a few days ago. I ...
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189 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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222 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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Current Blockchain Size - geth and Parity? [duplicate]

As of 09.09.2017, can anyone tell me the current disk space requirements of the blockchain, when using Geth and when using Parity? Please assume invoking with no options.
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418 views

Syncing Taking 1+ Weeks?

I am syncing the ETH blockchain on a VPS with a 1TB hard drive/ It has taken a week so far and progress is now going at a snail's pace. It seems like it's never going to finish. I'm also syncing on ...
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225 views

private network ether is 0 after block synchronization

i'm taking a course. in this course we create a private network and create some ether(miner.start(1)) i check my account and i have some ether. eth.getBalance(eth.accounts[0]) => 12 i practice ...
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402 views

What happens if no (unique) longest chain of blocks exists, so that the current state of Ethereum is ambigious? [duplicate]

What happens if no (unique) longest chain of blocks exists, so that the current state of Ethereum is ambigious? I know that the longest chain of blocks are always taken to be the current state of ...
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2answers
667 views

parity --warp taking forever

I am trying to sync the parity wallet by running parity --warp Apparently this is only meant to take a couple of minutes, but this has been going on for a couple of hours. Does any know how much ...
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258 views

Installing Mist after I already had Geth

I already had geth installed and Rinkeby testnet synced. After that, I wanted to see how Mist works and downloaded Mist ( 36.7 MB Mist-linux64-0-9-0.deb). When launched Mist and choose Rinkeby test ...
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How do I verify the integrity of my local chainblock data?

If I suspect local data corruption, is there a way to verify that my blockchain data is valid and will not affect my Ethereum work and transactions? Example: I switched to a self-compiled version of ...
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756 views

How to find out how many blocks left to sync? [duplicate]

When syncing with geth, how do you know how many blocks are left to be fully in sync?
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962 views

Geth traceTransaction: missing trie node [duplicate]

I have a fully synced Geth node and am trying to run the debug.traceTransaction() method, but it keeps giving me this error: Error: missing trie node ...
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662 views

What is the best parity configuration to run a full archive node on raspberry pi?

I am using a raspberry pi to download the archived version of the blockchain with parity. I've started parity with parity -d /home/xxx/data/Ethereum --pruning archive --public-node However, the ...
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772 views

geth --testnet attach “getsockopt: connection refused”, with blockchain saved on external storage

I have just finished syncing to the testnet, but I'm having trouble running geth console on it. Storing the blockchain on an external usb drive, this is the command I used to start geth on the ...