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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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1answer
45 views

Can `rm` be an alternative to `parity db kill`

In my configuration, I have specified base-path as follows: [parity] chain = "chain-spec.json" base_path = "./parityData" Can I remove chain data by removing database files in parity? rm -rf ./...
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3answers
18k views

how do you know your db is synced in geth?

In order to answer this question there is a need to get the timestamp of when the database is synced with geth. I can think of two ways of doing that : find the 1st occurrence of 1 block in the geth ...
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1answer
100 views

Calling web3 in front end layer or back end layer?

I'm building a Dapp using NodeJS and Express with ejs files. I wonder should I call web3 API in the Backend JS file or front end EJS/HTML files? Some thoughts I have is: calling web3 api in backend ...
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1answer
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I'm new to compiling solidity code, is there a way to make it easier/faster? I think I'm doing wrong

1.- I connect to Geth to download the blockchain. 2.- Geth starts downloading. 3.- Once the chain is downloaded I open Mist wallet. 4.- Mist Wallet opens and there I can compile my contracts ...
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3answers
2k views

Anything that can be done about slow Parity Sync?

I've tried resetting the sync and it still comes to a screeching halt around block number 2.4m. I know about the attacks on Ethereum around those blocks, but this is ridiculous: I've been syncing for ...
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208 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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1answer
103 views

next step after blockchain synchronization [duplicate]

I am syncing using geth. do I need to 'save' or secure the blockchain in some way after sync finishes? If i need to pause for some time (kill geth, restart machine) next time i run geth it will ...
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0answers
320 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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147 views

Problems syncing wallet

I have been unsuccessful in trying to sync a new wallet or mist. I deleted the blockchain data and started over and it seemed to be syncing quite fast again, was more than halfway done in a few hours. ...
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4answers
8k views

Synchronisation failed, dropping peer

Whenever I attempt to run geth on the command line, it seems to have trouble syncing with the blockchain. I am absolutely a novice so I could be completely overlooking. I am getting these warnings ...
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1answer
2k views

Speed of syncing the chain in parity using archive pruning mode

I am using parity v1.7.0-beta-5f2cabd-20170727 and I sync with ethereum chain in archive mode in order to keep all states of smart contracts. The command i use to launch parity is parity --pruning ...
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1answer
321 views

Does fast sync download all past event logs?

If I do a fast sync when connecting to Ethereum the first time, will all past Events (written into smart contracts) be downloaded along with the block headers?
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105 views

Block Sync Progress

There is no block number listed like others I've seen. At first thought it was processed but that number is impossible? Also running eth.syncing doesn't work since blockchain is not yet fully ...
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2answers
4k views

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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2answers
579 views

When running geth to sync a full node, what is the meaning of cache and handles?

What does it means: cache=128 handles=1024 how to change those values?
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2answers
4k views

Resyncing and deleting chaindata directory

I'm about to do a resync of the blockchain but as I was deleting my chaindata directory from: ~/Library/Ethereum/chaindata I noticed there was also another chaindata directory located here: ~/...
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0answers
449 views

Ethereum blockchain size as of March 2017 (geth --fast and others) [duplicate]

What is the size of the Ethereum blockchain as of March 2017? I am just starting with geth --fast -cache=1024, but I would also be interested in other clients or other downloading methods. I know ...
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0answers
255 views

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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1answer
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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0answers
644 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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0answers
180 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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1answer
367 views

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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3answers
891 views

Syncing ethereum testnet

I'm syncing my geth client with ropsten testnet and just realized how slow is the syncing process after a certain block(trying to retrieve information from blocks that got in blockchain yesterday) for ...
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1answer
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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1answer
106 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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0answers
399 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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2answers
289 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 ...
3
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1answer
484 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
668 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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0answers
264 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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9answers
92k views

Help with very slow mist sync

I have seen other posts in reddit where users experienced slow sync times. I am using windows 10 and version 3.7 (I saw on gitter that other users on windows 10 had trouble with version 3.8 crashing). ...
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1answer
399 views

Is there a reason why my blockchain download stalls out at block ~2,429,000

I have downloaded the latest stable release of the ethereum wallet for windows. I installed everything and now I am just downloading. (I have repeated this process twice and the same issue has occured)...
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2answers
10k views

What is the parity light pruning mode?

Parity offers four different pruning methods: archive, basic, fast and light: --pruning METHOD Configure pruning of the state/storage trie. METHOD may be one of ...
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0answers
521 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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1answer
1k views

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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2answers
8k views

How to reduce chaindata database size?

Currently chaindata size is more then 10.02 GB. Is there any solution to reduce the size of stored data? Is there a way to store particular database and keep entirely the functionality of client (e.g....
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1answer
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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0answers
131 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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1answer
1k views

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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1answer
333 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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1answer
1k views

web3.eth.getBalance returns always zero

I have an ether account (whose details I prefer not to disclose here). I can confirm in etherchain.org that it has the correct amount of funds. I can also check that the funds were transferred in ...
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6answers
41k views

How long is the first sync supposed to last?

I've been running Geth (latest version) for around 12 hours and it's still not finished. The command prompt shows this : INFO [05-21|12:05:00] Imported new chain segment blocks=1 txs=...
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1answer
71 views

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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2answers
2k views

What do the geth sync messages mean?

So far I've gotten these rather cryptic messages while syncing: Imported new block headers Imported new block receipts Imported new state entries Stalling state sync, dropping peer What do they mean?...
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0answers
1k views

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 ...
2
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1answer
832 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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2answers
292 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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1answer
691 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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2answers
526 views

Ethereum block download limit

I've been syncing the ethereum blockchain for over a week now and it has stopped downloading blocks but continues to download structure. When I restart it, it resumes downloading blocks but will only ...
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2answers
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.