Go-ethereum: How to upgrade geth version , without data disappear?

[dksuper]

Hi there,

Recently , I want chage my 1.8.7 version geth node , to latest version , but the main point is that I want keep the all blockchain history , so the question is how to upgrade geth version , without data disappear?

System information

Geth version: 1.8.7
OS & Version: ubuntu

[minzak]

Just rewrite binary file, i do it several times.
stop service, update binary, restart service, done!)

[dksuper]

@bizlevel Thank you for reply!
But i have several question:

1. should I change the genesis.json , when the version that have different fromat genesis.json ?
2. does it have any effect when you rewrite binary file?

[minzak]

1 no
2 i hope))

[karalabe]

@dksuper We have't changed the genesis format in 3 years, so no worries there. You should be able to upgrade without any issues, just cleanly shut down the previous instance, update and restart it.

[dksuper]

@karalabe OK I got it, thanks a lot :)!