1

After 2 days of geth --fast, Geth was able to reach the latest 38xxxxx blocks:

..and suddenly it seems it's automatically leaving the fast sync and starting over slowly from block 0.

Here is the full output of the transition :

[....]
INFO [06-06|08:48:37] Imported new block receipts              count=4    elapsed=71.004ms   number=3812433 hash=b56f11.4a4a62 ignored=0
INFO [06-06|08:48:37] Imported new state entries               count=1    elapsed=4.000ms    processed=7925815 pending=2833
INFO [06-06|08:48:37] Imported new state entries               count=5    elapsed=19.001ms   processed=7925820 pending=2903
INFO [06-06|08:48:38] Imported new state entries               count=6    elapsed=39.002ms   processed=7925826 pending=2993
INFO [06-06|08:48:38] Imported new state entries               count=1    elapsed=9.000ms    processed=7925827 pending=3005
INFO [06-06|08:48:38] Imported new block receipts              count=5    elapsed=118.006ms  number=3812438 hash=74bacd.b07409 ignored=0
INFO [06-06|08:48:38] Imported new state entries               count=2    elapsed=9.000ms    processed=7925829 pending=3037
INFO [06-06|08:48:39] Imported new state entries               count=3    elapsed=273.015ms  processed=7925832 pending=3079
INFO [06-06|08:48:39] Imported new state entries               count=8    elapsed=44.002ms   processed=7925840 pending=3190
INFO [06-06|08:48:39] Imported new state entries               count=2    elapsed=28.001ms   processed=7925842 pending=3217
INFO [06-06|08:48:39] Imported new state entries               count=3    elapsed=28.001ms   processed=7925845 pending=3261
INFO [06-06|08:48:39] Imported new state entries               count=9    elapsed=37.002ms   processed=7925854 pending=3382
INFO [06-06|08:48:40] Imported new state entries               count=2    elapsed=14.000ms   processed=7925856 pending=3454
INFO [06-06|08:48:40] Imported new state entries               count=3    elapsed=469.026ms  processed=7925859 pending=3454
INFO [06-06|08:48:40] Imported new state entries               count=6    elapsed=25.001ms   processed=7925865 pending=3538
INFO [06-06|08:48:40] Imported new state entries               count=2    elapsed=26.001ms   processed=7925867 pending=3571
INFO [06-06|08:48:41] Imported new state entries               count=3    elapsed=30.001ms   processed=7925870 pending=3614
INFO [06-06|08:48:41] Imported new state entries               count=2    elapsed=29.001ms   processed=7925872 pending=3643
INFO [06-06|08:48:41] Imported new state entries               count=3    elapsed=33.001ms   processed=7925875 pending=3681
INFO [06-06|08:48:41] Imported new state entries               count=2    elapsed=11.000ms   processed=7925877 pending=3711
INFO [06-06|08:48:41] Imported new state entries               count=6    elapsed=253.014ms  processed=7925883 pending=3798
INFO [06-06|08:48:42] Imported new state entries               count=11   elapsed=67.003ms   processed=7925894 pending=3956
INFO [06-06|08:48:42] Imported new state entries               count=7    elapsed=43.002ms   processed=7925901 pending=4083
INFO [06-06|08:48:42] Imported new state entries               count=2    elapsed=36.002ms   processed=7925903 pending=4083
INFO [06-06|08:48:42] Imported new state entries               count=8    elapsed=36.002ms   processed=7925911 pending=4189
INFO [06-06|08:48:45] Imported new block receipts              count=240  elapsed=2.977s     number=3812678 hash=2d31a6.083294 ignored=0
INFO [06-06|08:48:45] Imported new state entries               count=4    elapsed=45.002ms   processed=7925915 pending=4245
INFO [06-06|08:48:45] Imported new state entries               count=2    elapsed=2.900s     processed=7925917 pending=4245
INFO [06-06|08:48:49] Imported new block receipts              count=367  elapsed=3.568s     number=3813045 hash=3e006c.4f33fb ignored=0
INFO [06-06|08:48:53] Imported new state entries               count=11   elapsed=7.615s     processed=7925928 pending=4303
INFO [06-06|08:48:53] Imported new state entries               count=1    elapsed=7.804s     processed=7925929 pending=4302
INFO [06-06|08:48:53] Imported new state entries               count=10   elapsed=397.022ms  processed=7925939 pending=4458
INFO [06-06|08:48:56] Imported new state entries               count=3    elapsed=56.003ms   processed=7925942 pending=4506
INFO [06-06|08:49:00] Imported new state entries               count=2    elapsed=1.479s     processed=7925944 pending=4516
INFO [06-06|08:49:00] Imported new state entries               count=2    elapsed=10.000ms   processed=7925946 pending=4541
INFO [06-06|08:49:00] Imported new state entries               count=2    elapsed=4.204s     processed=7925948 pending=4541
INFO [06-06|08:49:00] Imported new state entries               count=1    elapsed=3.039s     processed=7925949 pending=4541
INFO [06-06|08:49:00] Imported new state entries               count=2    elapsed=7.024s     processed=7925951 pending=4541
INFO [06-06|08:49:00] Imported new state entries               count=2    elapsed=2.731s     processed=7925953 pending=4541
INFO [06-06|08:49:00] Imported new state entries               count=2    elapsed=5.603s     processed=7925955 pending=4541
INFO [06-06|08:49:06] Imported new state entries               count=3    elapsed=15.000ms   processed=7925958 pending=4647
INFO [06-06|08:49:18] Imported new state entries               count=12   elapsed=6.305s     processed=7925970 pending=4699
INFO [06-06|08:49:18] Imported new state entries               count=1    elapsed=376.021ms  processed=7925971 pending=4703
INFO [06-06|08:49:18] Imported new state entries               count=2    elapsed=11.986s    processed=7925973 pending=4703
INFO [06-06|08:49:18] Imported new state entries               count=2    elapsed=10.419s    processed=7925975 pending=4703
WARN [06-06|08:49:18] Synchronisation failed, retrying         err="state data download canceled (requested)"
INFO [06-06|08:49:18] Imported new state entries               count=1    elapsed=8.985s     processed=7925976 pending=4703
INFO [06-06|08:49:18] Imported new state entries               count=2    elapsed=8.616s     processed=7925978 pending=4703
INFO [06-06|08:49:18] Imported new state entries               count=13   elapsed=17.648s    processed=7925991 pending=4703
WARN [06-06|08:49:24] Synchronisation failed, dropping peer    peer=638635ba553486c4 err=timeout
WARN [06-06|08:49:30] Synchronisation failed, retrying         err="block download canceled (requested)"
INFO [06-06|08:49:39] Imported new chain segment               blocks=2 txs=0 mgas=0.000 elapsed=198.011ms  mgasps=0.000 number=2       hash=b495a1.4698c9
INFO [06-06|08:49:45] Generating ethash verification cache     epoch=0   percentage=83 elapsed=3.194s
INFO [06-06|08:49:45] Generated ethash verification cache      epoch=0   elapsed=3.850s
INFO [06-06|08:49:46] Imported new chain segment               blocks=4 txs=0 mgas=0.000 elapsed=4.168s     mgasps=0.000 number=6       hash=1f1aed.6b326e
WARN [06-06|08:49:46] Synchronisation failed, dropping peer    peer=b5b6525a9debd11c err="retrieved hash chain is invalid"
INFO [06-06|08:49:51] Imported new chain segment               blocks=30 txs=0 mgas=0.000 elapsed=1.400s     mgasps=0.000 number=36      hash=5f81bf.8cbf9a
INFO [06-06|08:49:53] Imported new chain segment               blocks=29 txs=0 mgas=0.000 elapsed=1.223s     mgasps=0.000 number=65      hash=35209c.d130dd
INFO [06-06|08:49:53] Imported new chain segment               blocks=17 txs=0 mgas=0.000 elapsed=872.049ms  mgasps=0.000 number=82      hash=861461.3f3d8c
INFO [06-06|08:49:58] Imported new chain segment               blocks=82 txs=0 mgas=0.000 elapsed=4.328s     mgasps=0.000 number=164     hash=cc7fe7.0c1e01
INFO [06-06|08:50:06] Imported new chain segment               blocks=191 txs=0 mgas=0.000 elapsed=8.374s     mgasps=0.000 number=355     hash=6cb52d.258937
INFO [06-06|08:50:14] Imported new chain segment               blocks=222 txs=0 mgas=0.000 elapsed=8.025s     mgasps=0.000 number=577     hash=c4cee3.93da3f
INFO [06-06|08:50:23] Imported new chain segment               blocks=251 txs=0 mgas=0.000 elapsed=8.199s     mgasps=0.000 number=828     hash=b00a2e.5b092a
INFO [06-06|08:50:31] Imported new chain segment               blocks=130 txs=0 mgas=0.000 elapsed=8.080s     mgasps=0.000 number=958     hash=0dde79.341549
INFO [06-06|08:50:39] Imported new chain segment               blocks=181 txs=0 mgas=0.000 elapsed=8.082s     mgasps=0.000 number=1139    hash=b4a358.d27eba
INFO [06-06|08:50:47] Imported new chain segment               blocks=181 txs=0 mgas=0.000 elapsed=8.021s     mgasps=0.000 number=1320    hash=284ae7.ac5c92
INFO [06-06|08:50:51] Imported new chain segment               blocks=114 txs=0 mgas=0.000 elapsed=4.376s     mgasps=0.000 number=1434    hash=943b83.6e9a56
INFO [06-06|08:50:59] Imported new chain segment               blocks=216 txs=0 mgas=0.000 elapsed=8.001s     mgasps=0.000 number=1650    hash=4d5d49.7b09af
INFO [06-06|08:51:07] Imported new chain segment               blocks=203 txs=0 mgas=0.000 elapsed=8.030s     mgasps=0.000 number=1853    hash=60cfd1.ba336a
INFO [06-06|08:51:15] Imported new chain segment               blocks=163 txs=0 mgas=0.000 elapsed=8.046s     mgasps=0.000 number=2016    hash=80ca4e.018305
INFO [06-06|08:51:23] Imported new chain segment               blocks=160 txs=0 mgas=0.000 elapsed=8.002s     mgasps=0.000 number=2176    hash=725d27.0971e2
INFO [06-06|08:51:31] Imported new chain segment               blocks=189 txs=0 mgas=0.000 elapsed=8.028s     mgasps=0.000 number=2365    hash=c4b0a2.713532
INFO [06-06|08:51:39] Imported new chain segment               blocks=220 txs=0 mgas=0.000 elapsed=8.009s     mgasps=0.000 number=2585    hash=e0d04a.526335
INFO [06-06|08:51:47] Imported new chain segment               blocks=219 txs=0 mgas=0.000 elapsed=8.011s     mgasps=0.000 number=2804    hash=6765e1.91b5d8
INFO [06-06|08:51:56] Imported new chain segment               blocks=253 txs=0 mgas=0.000 elapsed=8.201s     mgasps=0.000 number=3057    hash=2c8e6e.ab2f85
INFO [06-06|08:52:04] Imported new chain segment               blocks=280 txs=0 mgas=0.000 elapsed=8.011s     mgasps=0.000 number=3337    hash=e99d17.637e30
INFO [06-06|08:52:07] Imported new chain segment               blocks=145 txs=0 mgas=0.000 elapsed=3.431s     mgasps=0.000 number=3482    hash=6c29c0.e46a2a
INFO [06-06|08:52:15] Imported new chain segment               blocks=347 txs=0 mgas=0.000 elapsed=8.021s     mgasps=0.000 number=3829    hash=8226c6.a3e01a
[....]

Am I missing something? "Imported new chain segment" is progressing so slowly. it will take weeks to finish

Improve this question

1 Answer 1

Reset to default
1

the synchronization has failed (and maybe it will fail in the next sync), try to update your geth then try to use : 

geth removedb

geth upgradedb

then wait for the chain to resync.

Improve this answer
4
  • thanks, I have upgraded to 1.6.5 (I think I was on ~1.6.1) I have entered the 2 commands.... now I'm assuming I'll have to wait 2 more days to know if sync is success. no way to know a fail before the end of sync ?
    – Richard
    Jun 6, 2017 at 11:47
  • unfortunatly no way to do so, you could maybe use geth --light or --fast instead synching the full chain.
    – Badr Bellaj ♦
    Jun 6, 2017 at 11:55
  • How do you know it has failed? I see no message that indicates a failure.
    – JZ.
    Aug 9, 2017 at 15:13
  • The highest log level is [WARN]
    – JZ.
    Aug 9, 2017 at 15:13

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge that you have read and understand our privacy policy and code of conduct.

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