Questions tagged [blockchain-import]
Questions about the blockchain-import feature including security related concerns and comparisons with syncing the blockchain from scratch
20 questions
0
votes
1
answer
28
views
F exception while reading from file, height=2521799: Error in deserialization of chunk
I have been following the What is the fastest way to synchronize the daemon? post to import the blockchain.
I download the blockchain.raw successfully but I got error at importing the last block:
$ ...
- 111
0
votes
0
answers
31
views
How does the function get_and_convert_block_blob_from_height work?
"get_and_convert_block_blob_from_height" function is called multiple times when running the binaries such as depth, export, import. What does it do and how does it work ?
- 1
0
votes
0
answers
188
views
Blockchain is (fully?) synchronized, but lmdb size is 1 Gb
I'm just starting with Monero.
I'm using pre-installed Monero (XMR) Wallet on Whonix.
My settings are:
Advanced mode
Portable mode enabled
Local node, with location of blockchain set to a separate ...
- 1
0
votes
1
answer
75
views
What is a fakechain?
The output of monerod --help and monero-blockchain-import --help show a --keep-fakechain option:
--keep-fakechain Don't delete any existing database when
...
- 101
1
vote
1
answer
3k
views
Monerod synchronization very slow on SSD with good network bandwidth
I'm trying to sync local node.
I downloaded the monero blockchain.raw file and imported it using monero-blockchain-import. Importing the blockchain took about 5 hours. But for some reasons it imported ...
- 41
2
votes
1
answer
2k
views
More detailed explanations for the db-sync-mode parameters? (i.e. safe, fast, fastest; sync, async; and nblocks_per_sync)
Can someone give more detailed explanations on what the various db-sync-mode parameters actually do in monerod and monero-blockchain-import, and why one might select each of them? (i.e. safe, fast, ...
- 121
1
vote
1
answer
102
views
Which is the more reliable coin after April 2018 network upgrade?
As far I understand monero is now divided as monero and monero classic/original/0 . So which is the more reliable coin?
I do have a linux node in which an old version of monerod was installed. To ...
- 113
18
votes
1
answer
17k
views
I forgot to upgrade (from CLI or GUI v0.13 to CLI or GUI v0.14) and, as a result, accidentally synced to the wrong (alternative) chain
I forgot to upgrade (from CLI or GUI v0.13 to CLI or GUI v0.14) and, as a result, accidentally synced to the wrong (alternative) chain. How do I resolve this issue?
- 15.3k
8
votes
1
answer
3k
views
Why does the option "--verify 0" for monero-blockchain-import not work?
When I use the command ./monero-blockchain-import --verify 0 --input-file ./blockchain.raw it says "Failed to parse arguments: unrecognised option '--verify'".
- 83
4
votes
1
answer
7k
views
Which directory does monero-blockchain-import, by default, use to store the imported blockchain?
I am not sure if this makes sense or not. I was using an old version of the Monero GUI and I was stuck at block 140001. I thought it was a sycning problem so I downloaded the raw blockchain from ...
- 43
2
votes
0
answers
208
views
Move blockchain folder on Windows [duplicate]
I have read https://www.monero.how/tutorial-how-to-speed-up-initial-blockchain-sync and downloaded the 27.2 gb raw file.
I had the monero gui installed and specified the directory for the blockchain ...
- 121
2
votes
2
answers
1k
views
Can't find the .bitmonero directory to set up the blockchain.raw file in Ubuntu 17.10?
I changed from windows to Ubuntu 17.10 Linux. I'm totally new on it. I've been learning how to work with the terminal, and I have already downloaded my old windows blockchain.raw file located in the ...
- 303
1
vote
0
answers
162
views
bootstrap import data dir command not working
Hi I am trying to import the raw blockchain into my linux computers Persistent folder, however the command to tell it to do that will not work
if I type
./monero-blockchain-import --data-dir /home/...
- 11
4
votes
1
answer
1k
views
How do I constrain memory usage during initial blockchain sync
I'm trying to get monerod up and running on a VPS with 1gb of RAM. My understanding is that once the chain is synced, monerod's memory usage should be quite reasonable. However, during the initial ...
- 263
1
vote
1
answer
351
views
Can I use a copy of a blockchain created on Mac OS X, on an offline Ubuntu (ARMv7) box?
I created a wallet on an offline/air-gapped Ubuntu box, but my main computer is a Mac. If I want to sync the offline Ubuntu wallet to check the balance, can I use the blockchain created on my Mac?
If ...
- 889
6
votes
1
answer
642
views
Since monerod through Tor is slower (on Whonix), would importing the .raw be faster?
My understanding is that importing a blockchain backup with Monero and other cryptocurrencies takes about the same time it takes to sync normally. The only reason I could see for someone doing that, ...
- 111
6
votes
2
answers
928
views
How do you convert the Monero blockchain from Linux to Windows?
I know there is a tool that can be used to convert the format but what steps should be taken to do so?
- 6,494
7
votes
1
answer
270
views
Do checkpoints make initial blockchain sync faster?
Do the checkpoint hashes in checkpoints.cpp make the syncing go faster? Why or why not?
- 603
5
votes
1
answer
768
views
What is the risk of specifying --verify 0 with blockchain_import?
I have noticed that importing a blockchain snapshot file blockchain.raw speeds up dramatically when using --verify 0. The default value is 1 though. What is the downside, or risk, of not verifying ...
- 4,539
8
votes
1
answer
959
views
Why is it faster to synchronize from the network than to import from a raw data file?
I've read some places that its faster to synchronize from the network than to download and then import a raw blockchain file. Why is it faster to synchronize from the network?
- 5,694