6

System information

Geth version: geth version Version: 1.6.6-unstable Architecture: amd64 OS & Version: Windows/Linux/OSX win10

Expected behaviour

I create a private chain in my pc. After mining for a while, I just want to stop mining

Actual behaviour

,so I type "miner.stop()", but it can't stop. the console still show information incessantly.

> INFO [07-07|09:42:20] Successfully sealed new block            number=203 hash=c11ed3…0bec95
INFO [07-07|09:42:21] 🔗 block reached canonical chain          number=198 hash=769f09…0fdd3f
INFO [07-07|09:42:21] 🔨 mined potential block                  number=203 hash=c11ed3…0bec95
INFO [07-07|09:42:21] Generating DAG in progress               epoch=1 percentage=72 elapsed=24m35.334s
INFO [07-07|09:42:21] Commit new mining work                   number=204 txs=0 uncles=0 elapsed=0s
> miner.stop()
true
> INFO [07-07|09:42:27] Generating DAG in progress               epoch=1 percentage=73 elapsed=24m40.957s
INFO [07-07|09:42:30] Generating DAG in progress               epoch=1 percentage=74 elapsed=24m43.627s
> miner.stINFO [07-07|09:42:32] Generating DAG in progress               epoch=1 percentage=75 elapsed=24m46.275s
> miner.stop()
true
> INFO [07-07|09:42:36] Generating DAG in progress               epoch=1 percentage=76 elapsed=24m49.595s
INFO [07-07|09:42:39] Generating DAG in progress               epoch=1 percentage=77 elapsed=24m52.717s

> miner.INFO [07-07|09:42:42] Generating DAG in progress               epoch=1 percentage=78 elapsed=24m55.622s
> miner.stop()
true
> INFO [07-07|09:42:45] Generating DAG in progress               epoch=1 percentage=79 elapsed=24m58.961s
INFO [07-07|09:42:48] Generating DAG in progress               epoch=1 percentage=80 elapsed=25m2.255s
INFO [07-07|09:42:52] Generating DAG in progress               epoch=1 percentage=81 elapsed=2
|improve this question
  • 1
    It is not mining blocks. It is generating the DAG (github.com/ethereum/wiki/blob/master/…), a dataset used by Ethereum proof of work algorithm. It takes some time to generate but it is only updated each 30000 blocks. – Ismael Jul 7 '17 at 4:19
  • 1
    I am having this same issue. Did you find out what to do to make it stop? Because it should stop generating the DAG as well. – Karen S Mar 1 '18 at 21:53
  • 1
    Facing same issue .. any solution for this?? – Zulfi Jun 21 '18 at 18:32
2

The first time you start mining will take some time as your node will need to generate a 1GB dataset for the Proof of Work algorithm. You will see “generating DAG” messages in the other console log, which took about 8 minutes on my laptop. You can read more about this here:

https://github.com/ethereum/wiki/wiki/Ethash-DAG

Source:

https://medium.com/@mikesmolenski/getting-started-with-ethereum-4a3841276b6e

|improve this answer
1

miner.stop() will stop the mining likely after the running process is finished. You probably still have a handful of process that need to be finished. I was using ethereum private chain with PoA consensus and miner.stop() does stop the mining.

|improve this answer

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.