Geth miner not working

Question

I have created a private network and created accounts. I have made a transaction and now trying to mine the transaction. But when I try to mine, mining is not happening. It shows null:

> miner.start()
null

Answer 1

Hi. miner.start() gives no output. So, when the output is null, it does not mean that mining is not happening. To check if mining is happening or not, you can read the logs:

$ geth --datadir ./path/to.datadir --networkid <network id> console 2>> Eth.log

And then in new terminal run this

$ tail -f Eth.log

Comments

tail -f Eth.log shows

INFO [04-06|13:29:46.252] Started P2P networking                   self=enode://211e84e29cc3ab995789181e696762a0dee6de7d31de640c570d70df4e4c5de370f4a117125e71db5772d0c744ac140444c0bc57079d0fe223fddc573b441eb7@127.0.0.1:30303
INFO [04-06|13:29:46.381] Etherbase automatically configured       address=0xfEda0139896A10E979A100196065D2692da6Baee
INFO [04-06|13:29:48.324] New local node record                    seq=20 id=21f36c2d1ae8ec78 ip=27.147.202.141 udp=30303 tcp=30303
INFO [04-06|13:29:57.919] Looking for peers                        peercount=0 tried=112 static=0
INFO [04-06|13:30:07.944] Looking for peers                        peercount=0 tried=126 static=0
INFO [04-06|13:30:18.783] Looking for peers                        peercount=0 tried=108 static=0
ERROR[04-06|13:30:23.392] Snapshot extension registration failed   peer=ace0f0b9 err="peer connected on snap without compatible eth support"
INFO [04-06|13:30:28.952] Looking for peers                        peercount=0 tried=93  static=0
INFO [04-06|13:30:39.249] Looking for peers                        peercount=0 tried=87  static=0
INFO [04-06|13:30:49.267] Looking for peers                        peercount=0 tried=30  static=0
INFO [04-06|13:30:59.434] Looking for peers                        peercount=0 tried=38  static=0
INFO [04-06|13:31:09.445] Looking for peers                        peercount=0 tried=40  static=0
INFO [04-06|13:31:19.897] Looking for peers                        peercount=0 tried=69  static=0
INFO [04-06|13:31:30.059] Looking for peers                        peercount=0 tried=45  static=0
INFO [04-06|13:31:42.015] Looking for peers                        peercount=0 tried=64  static=0

and always facing miner.start(3) or miner.start() or miner.start(2) , null