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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2answers
713 views

Where can I go if I still have problems with syncing the blockchain?

I've searched online, this Stack Exchange, including synchronization, and am still having problems with syncing Geth. Where else can I look and try to get help?
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1answer
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Can I run Geth without syncing?

I want to test some api calls using web3.js and so I am using geth as HttpProvider. Can I start geth without the syncing? Is something like geth --nosync --rpc available?
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slow start of block synchronization in geth [duplicate]

What can I improve or debug to find causes of a delayed start of the block synchronization in geth? I am running the latest geth (1.4.5-stable-a269a713) on Ubuntu 15.10, I noticed this behavior ...
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admin.chainSyncStatus API doesn't work? [duplicate]

I've found a good API I want to use to see if my geth is in sync: admin.chainSyncStatus. However, when I call it through web3/nodejs, I get this error: /home/myuser/Documents/Code/Crypto/...
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3answers
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How do I keep my Ethereum Wallet synchronised after the initial synchronisation

I have successfully installed and synchronised Ethereum Wallet and it has correctly brought in my test Ether purchase. How do I resynchronise to ensure more current transactions are recorded on my ...
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1answer
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Downloading full blockchain again after using geth --fast on 0.7.4 [duplicate]

I've downloaded the newest mist browser on a new pc and used geth --fast. After fully syncing (which was about 1,5 hours) the syncing started from 0 again, but this time slow, downloading the whole ...
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1answer
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What is Geth's JIT VM?

Whilst downloading the blockchain which has taken me approximately a week to get to block 1.09 mil, I received a message from geth.exe after a reboot around 1050999 -1060888 You're one of the lucky ...
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3answers
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Mist 0.7.3: how long does it take to sync and how much data do I need to download?

I just installed Mist 0.7.3 and would like to know how long does it usually take and how much data does it download as of today. What other alternatives are there to Mist if I dont want to download ...
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Why can't I send ETH? (Mist 0.7.2 OSX Yosemite)

My account has thousands of ETH in it, but MIST says this: "We can't estimate your gas usage properly, as you need at least 1 ether in your account." My Mist and geth are all updated to the latest ...
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1answer
773 views

Why is fast sync not working with geth 1.1?

When I run geth --fast I get: Incorrect Usage. geth [global options] command [command options] [arguments...] VERSION: 1.1.0 [...] flag provided but not defined: -fast How do I fix this?
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2answers
515 views

Test Net not syncing

I sent my presale wallet to the main account of my Mist Eth Wallet using MyEtherWallet.com. It said it sent and my presale wallet is empty but it has not showed up on my Mist wallet yet. Also it says ...
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1answer
4k views

Why isn't fast sync the default?

As I understand, fast sync has all the security guarantees of a full sync, but is faster. Is that correct? If so, why isn't fast sync the default?
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4answers
570 views

Mac [El Capitan], Mist is stuck on block 1,150,006

I'm on a Mac with El Capitan and am running the latest version of Mist.It's stuck on block 1,150,006 and I'm not sure why neither do I know what to do...
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0answers
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ETH deposit to mist wallet, but balance not showing [duplicate]

I made an ETH deposit to my Mist wallet, but the wallet does not show any balance after 100 confirmations. The wallet is new and blockchain is still syncing. Any idea how I can solve this issue?
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2answers
538 views

Ethereum wallet doesn't sync v. 0.7.3 stuck or too slow using Os x 10.9.5

I'm using Ethereum 0.7.3 and it doesn't sync on my MacPro Os x 10.9.5. It is too slow or it get's suck. I tried v.0.7.1 and v.0.7.2, and it's the same problem. My Internet connection it's ok, I ...
5
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1answer
428 views

Alternative to sequence id for mapping

Right now I have a sequence if ids used for mapping in contract: mapping (uint => Document) documents; uint documentsCount; which is incremented for every new document: function createDocument() ...
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1answer
156 views

If geth sync is interrupted (network downtime), will restartin sync from where it left off cause a corrupt chain?

I'm on Ubuntu 14.04. MSI Z97 Gaming 5 board Haswell G3258 CPU Corsair Vengeance 8GB DDR3 RAM Sapphire Radeon 390 Tri-x OC GPU X5 EVGA 1000G PSU X2 Samsung EVO 120GB SSD I'm not sure what else to add ...
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0answers
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Where can I just download the entire blockchain data folder after install Mist? [duplicate]

I'm running Mist for linux and its taking awhile to download the entire blockchain. Is there a place I can just download the entire blockchain folder and just copy it into the /resources folder in the ...
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0answers
96 views

My node lags behind, and more and more so [duplicate]

A few months ago, I had no problem to synchronize my Debian node. Now, I lag behind and I cannot catch up. There are long delays between blocks Here, a gap of several hours: I0507 03:40:13.321969 ...
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0answers
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Trying to sync fast but get “flag provided but not defined” [duplicate]

Blockchain sync was taking forever, so I tried running get --fast after extracting keychain keys and the chaindata folder and the running get --fast. I get "flag provided but not defined". How should ...
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0answers
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Blockchain taking abnormally long time to download? [duplicate]

I'm a newbie to Ethereum. I initialized the download process for the Ethereum network blockchain using geth yesterday (geth --rpc). It's been nearly 20 hours and blocks are still being imported. Is ...
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2answers
365 views

Mist 0.7.1 on Mac not updating blocks; unable to send Ether. How to send Ether given this problem?

Mist downloads new blocks upon a restart, thus is able to receive Ether, but I'm currently unable to send any Ether from any of the wallets in Mist. I believe the issue is the lack of synchronization ...
5
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1answer
589 views

why is my connected peers so few and blocks syncronising so slow even it stops

it took so much time to do the syncronising but still not completed, I want know if the syncronising is always this slow, or is there some way to make it quicker?
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0answers
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Quicker block sync in homestead? [duplicate]

I am downloading the full blockchain for the main network in Homestead, does the --fast function in geth work? geth --fast It has been a couple hours already and not even past 5%!
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What is the difference between “geth” and “geth --fast”? [duplicate]

EDIT : I hadn't see the other question but this one ain't a duplicate because I'm asking here, precisely, if the state differs and if it does, what are the implications. The answer to that question ...
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1answer
269 views

Is there a way to interchange between the Mist wallet and geth without having to redownload the whole blockchain?

I already have the ethereum wallet running on my laptop, when I exit it and go to run geth in terminal it redownloads the entire blockchain again? Same thing happens when I go from geth to the wallet. ...
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1answer
2k views

Wallet sync restarts from block 0 after closing and launch

I downloaded the Ethereum-wallet for OSX and started the sync. It took like 10 hours to sync more than 1M blocks. I closed the wallet and restarted today, but I was surprised to see that the sync is ...
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2answers
522 views

Can you accessing blockchain data while offline (not synced), and is it a good design option?

Consider an application that currently uses a combination of license file and/or subscription to verify which features to activate. I can use a smart contract instead of the license file, and ...
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2answers
371 views

Mist 0.5.1 synchronization problem on Windows

I'm running Mist on Windows 10. I have been trying to download the blockchain since yesterday and the process is too slow and cumbersome. I switched off the firewall and I set the clock and I started ...
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2answers
3k views

When transferring Ether, who needs to be in sync with the blockchain?

A transfers ETH to B: who needs to be in sync with the blockchain? My comprehension is that A only needs to be sync, is that correct ?
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0answers
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Do you need the fully synced node before sending a transaction to the network? [duplicate]

I'm trying to create a wallet locally. I can create an externally owned account using geth that is connected to a local test chain. Now I would like to "push" that account to the real blockchain. Does ...
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0answers
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Help with downloading the network [duplicate]

I'm trying to download the network in a different drive of my computer, not my C drive, because I don't have much space left on that one. I change the directory, H drive, while in the command prompt ...
4
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1answer
1k views

Can I send Ether with Mist without syncing it to the current best block?

Can I safely send Ether after skipping the peer research in Mist?
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1answer
784 views

Can I do a pruned fast sync?

I would like to do a fast bootstrap of the Ethereum blockchain with minimal disk space usage. Can geth do a pruned fast sync?
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1answer
1k views

Can I use my Ethereum accounts on different computers?

I'm used to synchronize my data on different machines. Depending on the data I use Git, Dropbox or Syncthing. Is this possible with Ethereum accounts, too?
2
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1answer
593 views

How to transfer the Ethereum blockchain to another user session?

My client was not syncing at all. I have installed a new wallet in another user session with new wallet addresses. Wallet 2 for user 2 on the same Windows 10 machine has downloaded the entire ...
2
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1answer
316 views

cpp-ethereum (Homestead) starts resyncing blockchain

I just installed cpp-ethereum 1.2.2 in order to upgrade to Homestead. When eth is started it begins to re-sync the blockchain from block 1, while the whole blockchain is already on my machine. Is ...
6
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1answer
986 views

Will I be able to mine having my whole blockchain imported using the --fast flag? (Geth)

Having the same problem as in this question: Corruption on data-block while synchronising I restarted my synchro on the fresh/empty data directory using the --fast flag. According to this answer: What ...
7
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1answer
3k views

Is there a downloadable Ethereum bootstrap?

I am trying to synchronize a full node, and this is going very slowly, the progress alternates between bursts of high CPU usage (which is fine, it is heavy but importing), and long times with nothing ...
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0answers
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How to fix Mist node sync problems? [duplicate]

I am having problems syncing Mist. I have tried versions 0.3.9 and 0.4.0. I have been syncing for 4 days and I'm still stuck at 750.000 blocks of 1.000.000 blocks. I'm using Windows 10 64bit. Any ...
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1answer
1k views

Why do Ethereum clients download the entire blockchain?

Lets say that I am not interested in mining but instead just interested in one contract and its latest state. Why shouldn't my client discard all the other state on initiation, and also ignore any new ...
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2answers
706 views

Transaction using geth is stuck

I have created a wallet using geth on my mac. I have sent a small amount from Kraken to that account but its stuck on "sending". Do I need to download the blockchain first on my node so it can be ...
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2answers
3k views

Is there any SPV client for ethereum?

I am looking to move some ETH from an exchange to a wallet for which I control the keys. I don't, however, want to download the whole blockchain. Is there a good SPV client I can use?
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0answers
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Why is my node taking so long to sync? [duplicate]

I downloaded the ethereum wallet, and its taken a few days yet its still syncing. Im on block ~701,000 thus far. Is something wrong? Is it supposed to take this long?

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