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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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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2answers
170 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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0answers
86 views

Error trying to synchronize geth clique client after shutdown

I'm working with a private network using geth clique clients. Each time a node shut downs, (after a power cut, or just killing the geth process), if a try to put it to work again, the node can't ...
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0answers
771 views

Synchronisation using geth; DAO fork-check, dropping is the only message recieved

I'm attempting to synchronise with the blockchain using geth on Win7 64bit. Presently pretty much all I'm getting is repeats of the same message; timed out DAO fork-check, dropping (see bottom). ...
4
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1answer
116 views

Can someone share your geth export file with me?

I need to setup an archival node ASAP but the download takes around 1-2 block per second. With this speed it will finish in 2 months (if it doesn't stall, but it does, I have to restart it manually ...
3
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0answers
205 views

Header broke chain ancestry, Synchronisation failed, dropping peer & retrieved hash chain is invalid

System information Geth version: Geth Version: 1.8.22-stable Git Commit: 7fa3509e2eaf1a4ebc12344590e5699406690f15 Architecture: arm Protocol Versions: [63 62] Network Id: 1 Go Version: go1.11.5 ...
3
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0answers
71 views

Spoofing of totalDifficulty variable

Péter Szilágyi, in his talk in Taipei, claims that totalDifficulty can be spoofed: https://www.youtube.com/watch?time_continue=575&v=qJA6J0mP73w How is that possible? Can the variable only be ...
3
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0answers
90 views

GETH gets out of sync from time to time

GETH tooks 6 days to sync, after that it will get out of sync from time to time. (PC is running with SSD, never shutdown, and network availability is 100% with 500mbps connection). May I know how ...
3
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0answers
100 views

Parity create testing transactions and blocks

For test purposes, I would like to make test blocks including test transactions against main net. For example I would like to make a transaction that sends one ether from 0x1234567... to 0x99999999......
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663 views

Can't complete synchronize the blockchain

I've tried to perform removedb, I've tried to go to different internets (my house, Starbucks), but I still get the same errors: INFO [06-09|20:10:17] Imported new block receipts count=...
3
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242 views

Ethereum Wallet testnet not synching when mining

I am trying to mine on the testnet. Unfortunately, my Ethereum Wallet (latest version using Geth 1.5.3) kind of gives up doing anything when I click on start Mining on testnet. The time counts up is ...
3
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0answers
312 views

geth shows last block 0, but on import says all blocks present

I'm trying to restore a corrupt geth DB to a previous version, when I run geth it says I1109 17:36:34.009514 core/blockchain.go:213] Last header: #0 [d4e56740…] TD=17179869184 I1109 17:36:34.009547 ...
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0answers
485 views

Private network with 2 servers on scaleway

first of all thank you for the great discussions and solution that I've found here. I'm trying to create a private ethereum network to which I want to access with 2 different servers. I am able to ...
3
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0answers
138 views

Raspberry Pi: Geth slow sync every time reboot

Since the first sync (I copy the chaindata folder from my local machine to the RPI), every time I start the RPI it takes hours to just sync 20k blocks. I tried geth --cache=512, etc. I am using ...
3
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0answers
581 views

Why I can not use ./geth --testnet --fast --cache=1024 --jitvm for geth 1.4.7?

I tried two times. Each time block count is for mainnet and there is no any chaindata for testnet
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0answers
30 views

Conflicting reports on sync mode and inability to see balances

I've been trying to maintain a full node for several months. It seemed to be working until I noticed zero balances this morning. etherscan.io site confirmed that balances are not zero, so ...
2
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0answers
59 views

Geth crashes, “missing trie node”, rlp: expected List

I am struggling with failing geth with my Dapp. I got an error like this: Web3 UnhandledPromiseRejectionWarning: Error: Returned error: missing trie node ...
2
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0answers
298 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, ...
2
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0answers
616 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 ...
2
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0answers
383 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 ...
2
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258 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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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 ...
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0answers
148 views

Extremely slow sync after moving to external drive (macOS; thunderbolt)

I was getting low on disk space so I decided to move the blockchain to an external drive with thunderbolt. I did it using Method 2 from this answer: In Mist browser how can I move the data (blockchain)...
2
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1answer
214 views

NodeSync - Node crashed while syncing? TypeError: Cannot read property 'timestamp' of undefined

Previously Mist wallet worked. Now it stops at 'Started Swarm' and writes this to console. I'm using Qubes with Debian-8 template. I start Mist by ./geth --synchmode "light" in the .config/Ethereum ...
2
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0answers
215 views

Mist wallet sync problem

At the moment I can't sync mist wallet for 3 days it download block till 4,102,477 and final hundred bloks are stuck but the numbers below (downloading chain structure) still running and running for a ...
2
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0answers
2k views

New blocks unbearably slow to sync

For seemingly months now, Geth has been really slow for me. Like, seconds per block: INFO [07-13|23:35:10] Starting peer-to-peer node instance=Geth/v1.6.6-stable-10a45cb5/windows-amd64/...
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0answers
476 views

Geth always returning a 0 balance?

i´m mining now for about 3 days with 3 rigs each with over 50Mh/s, but my balance is still 0. Does anybody know why ?
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198 views

What is the blockchain download size and can i reduce it in some way?

I am currently on a connection with a download cap, and was wondering what the current download size for the whole blockchain was, and if i could reduce this download size to under 2 GB? I'm ...
2
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0answers
428 views

Why does syncing with the Ropsten testnet appear to pause?

I am running a node with geth via the command geth --testnet --fast --rpc --rpcapi db,eth,net,web3,personal --cache=1024 --rpcport 8545 --rpcaddr 127.0.0.1 --rpccorsdomain "*" --bootnodes "enode://...
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669 views

block download canceled, geth 1.5.9 would not download blocks

when starting out geth I cant download past block 1292880 does anyone have any idea why it would not download any more blocks?
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254 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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0answers
338 views

Unable to synchronise with a remote peer

I am running a private network with two geth instances one on my machine and other on an AWS server using the same Genesis file. I am also using a networkid flag to differentiate my private network. ...
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0answers
83 views

Which recent Parity release can be used to synch a node for use with Mist 0.8.8

I am finding Geth exceptionally slow to synch. I found Parity to be much faster. However recent Parity releases make it very complex just to use the Parity client to synchronise and then open Mist. ...
2
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0answers
144 views

How can I sync Mist on a connection with a firewall?

I'm running Ubuntu Gnome 16.10 with the latest version of Mist installed. Whenever I run Mist at home, syncing works without a hitch. But when I run it at school, Mist opens but shows 0 peers. When I ...
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0answers
53 views

Mist RPC node error: invalid address length

Upon launching Mist, I get the following error message: Couldn't connect to RPC node Error: Invalid address length, expected 40 got 4 bytes I can't think of something I did over the last week that ...
2
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0answers
143 views

Is it possible to avoid sync in Ethereumj, but still register a listener?

I'm attempting to create an contract analysis application using Ethereumj. I don't need to participate as an Ethereum node on the network and thus I'm trying to avoid having to sync the entire ...
2
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0answers
426 views

Ethereum Wallet Will Not Sync

This is a continuation of my first question re: DAO withdraw problems. I'm running EW (latest update) on my MAC. I never connect with more than two peers and my wallet has not synced correctly since ...
2
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0answers
378 views

Parity/Mist syncing problem

I tried a few things and after a few attempts and ~24 hours the chain was synced. One thing i tried was to sync my PC clock after "time.is". It always showed a delay. I downloaded a program which ...
2
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0answers
535 views

Mist started re-syncing and ethers are gone

I downloaded the blockchain with geth --fast --cache=1024 option and size of my blockchain data after download of 2412706 blocks was around 10.9GB. I imported my accounts to keystore files and ...
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0answers
9 views

What are the rules on persisting old transactions?

If a new node joins the network and attempts a full sync, it requires all transaction information from genesis to build up its chain state. To do this the transactions it receives must be the ...
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0answers
79 views

Parity syncing in archive mode stuck at block 4839206

I am running Parity inside docker in pod in Kubernets on Google Cloud. The pod is using disk with 2700 GB for storing Ethereum blockchain, and currently disk has about 2100 GB free. Unfortunately for ...
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1answer
90 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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0answers
60 views

Synchronisation failed, dropping peer valid and Impossible reorg

I'm working on a project called Rubykube Workbench. But the "ethereum/client-go:Stable" container gives error. System information Geth version: 1.8.23-stable-c9427004 (docker container) OS & ...
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0answers
55 views

Slow sync since Constantinople reason?

Noticed two days ago my live ETH node has not been able to keep up with the network. It is a fast VPS that always was fine until two days ago. Running 2.3.5-stable of Parity. Block generation is ...
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0answers
46 views

Are regions a factor in downloading current Ethereum blocks?

We are currently having some problems syncing our nodes. Our server is located at the Asia Pacific region. Earlier our servers where in Azure and we don't have any troubles syncing. It has been 3 ...
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0answers
23 views

Syncing events history for specific addresses, possible?

I am writing software that needs the full history of events but I only need it for a certain contract address, which I would guess is a very common use case for app developers. Is there a way I can ...
1
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1answer
36 views

Getting the last synced block is 0

I am trying to get last synced block but it always 0. So I have run geth --syncmode fast -cache 4096 --rpc Here is a logs INFO [12-19|09:47:50.058] Imported new state entries count=...
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0answers
59 views

Mainnet sync Broken

I am having a Mainnet on Azure VM which was syncing the network as expected, but mean while after adding Ropsten network syncing on the same VM simultaneously I'm facing problem with Mainnet sync ...
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0answers
32 views

Delay on receiving block by peered node

Sometimes it takes an around of 25ms to import new block by the other peered node after mined by miner. But sometimes it increases directly around 400ms to import block by peered node after mined by ...
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0answers
446 views

Total number of state entries

I am syncing my ethereum blockchain using the default syncmode. I want to know how many total state entries are there because currently the highest block is 6544578 and the number of pulled states i.e....