The current default mode of sync for Geth is called fast sync. If you would like to run multiple instances follow these instructions.Ī. This directory cannot be shared between running instances. Geth uses a datadir to store the blockchain, accounts and some additional information. I would like to run multiple geth instances but got the error “Fatal: blockchain db err: resource temporarily unavailable”.Ī. I noticed my peercount slowly decrease, and now it is at 0.