>INFO [02-13|08:51:16.663] Disk storage enabled for ethash caches dir=/home/book/node1/geth/ethash count=3
>INFO [02-13|08:51:16.663] Disk storage enabled for ethash DAGs dir=/home/book/.ethash count=2
>INFO [02-13|08:51:16.663] Initialising Ethereum protocol versions="[63 62]" network=98760
>INFO [02-13|08:51:16.724] Loaded most recent local header number=0 hash=a5e5bc…3f490e td=10 age=49y10mo16h
>INFO [02-13|08:51:16.724] Loaded most recent local full block number=0 hash=a5e5bc…3f490e td=10 age=49y10mo16h
>INFO [02-13|08:51:16.724] Loaded most recent local fast block number=0 hash=a5e5bc…3f490e td=10 age=49y10mo16h
>INFO [02-13|08:51:16.724] Loaded local transaction journal transactions=0 dropped=0
>INFO [02-13|08:51:16.725] Regenerated local transaction journal transactions=0 accounts=0
>INFO [02-13|08:51:16.732] New local node record seq=3 id=eae4aa1f2059eed4 ip=127.0.0.1 udp=0 tcp=30303
>INFO [02-13|08:51:16.732] Started P2P networking self="enode://5ac26687728e3e3f4575e5e8feab33748bbc467951e1841b2063cc201dcb6ed4e9b9e26ca322fc935cc5b6b042ebbb6126f5bd7d6cf6903c1e19600cf7f6c8b5@127.0.0.1:30303?discport=0"
>INFO [02-13|08:51:16.732] IPC endpoint opened url=/home/book/node1/geth.ipc
>INFO [02-13|08:51:16.733] HTTP endpoint opened url=http://127.0.0.1:8545 cors= vhosts=localhost
>INFO [02-13|08:51:16.733] Transaction pool price threshold updated price=1000000000
>INFO [02-13|08:51:16.733] Updated mining threads threads=1
>INFO [02-13|08:51:16.733] Transaction pool price threshold updated price=1000000000
>INFO [02-13|08:51:16.734] Commit new mining work number=1 sealhash=5c4116…c8c1bf uncles=0 txs=0 gas=0 fees=0 elapsed=562.141µs
>INFO [02-13|08:51:16.779] Mapped network port proto=tcp extport=30303 intport=30303 interface=NAT-PMP(192.168.0.1)
>Welcome to the Geth JavaScript console!
>instance: Geth/v1.8.22-stable-7fa3509e/linux-amd64/go1.10.4
>coinbase: 0x4f744742ac711fd111c7a983176db1d48d29f413
>at block: 0 (Wed, 31 Dec 1969 16:00:00 PST)
>datadir: /home/book/node1
>modules: admin:1.0 debug:1.0 eth:1.0 ethash:1.0 miner:1.0 net:1.0 personal:1.0 rpc:1.0 txpool:1.0 web3:1.0
>> INFO [02-13|08:51:18.459] Generating DAG in progress epoch=0 percentage=0 elapsed=983.779ms
>INFO [02-13|08:51:19.420] Generating DAG in progress epoch=0 percentage=1 elapsed=1.944s
>INFO [02-13|08:51:20.395] Generating DAG in progress epoch=0 percentage=2 elapsed=2.919s
>INFO [02-13|08:51:21.440] Generating DAG in progress epoch=0 percentage=3 elapsed=3.963s
>…
>INFO [02-13|08:55:56.193] Successfully sealed new block number=46 sealhash=fccbc1…5cc27f hash=776967…3700c9 elapsed=7.306s
>INFO [02-13|08:55:56.193] > block reached canonical chain number=39 hash=9c6ba7…c95452
>INFO [02-13|08:55:56.193] > mined potential block number=46 hash=776967…3700c9
>INFO [02-13|08:55:56.193] Commit new mining work number=47 sealhash=41558f…3ef931 uncles=0 txs=0 gas=0 fees=0 elapsed=97.707µs
>> [1;5FINFO [02-13|08:56:01.030] Successfully sealed new block number=47 sealhash=41558f…3ef931 hash=f67a9b…773bfd elapsed=4.837s
>INFO [02-13|08:56:01.030]
> block reached canonical chain number=40 hash=3a6600…bde7e0>INFO [02-13|08:56:01.030]
> mined potential block number=47 hash=f67a9b…773bfd>INFO [02-13|08:56:01.030] Commit new mining work number=48 sealhash=d4ab02…7151c7 uncles=0 txs=0 gas=0 fees=0 elapsed=97.374µs