Hi am a 15 year old who wants to do this for a living so i don't read much so i learn better by doing it. So i wanted to upgrade a wallet to a newer version. So i did it all after my 1000th attempt it worked but then i found a problem which just didn't make sense how do i upgrade the blockchain from an 11v or 10v to 12v I tried 10 and it tells me
root@guest:~/learning-0.12.0.0/src# ./learningd -daemon
learning Core server starting
root@guest:~/learning-0.12.0.0/src# : Error loading block database.
Please restart with -reindex or -reindex-chainstate to recover.
root@guest:~/learning-0.12.0.0/src# ./learningd -reindex-chainstate
learning Core server starting
root@guest:~/learning-1.0.0/src# Warning: Failed to create backup, file already exists! This could happen if you restarted wallet in less than 60 seconds. You can continue if you are ok with this.
: Error loading block database.
Please restart with -reindex or -reindex-chainstate to recover.
Please restart with -reindex or -reindex-chainstate to recover.
root@guest:~/learning-1.0.0/src#
So i get that In the debug log i get this
`
2018-02-09 20:20:54 learning Core version v0.12.2.2-2ec8504-dirty (2018-02-05 17:18:13 -0700)
2018-02-09 20:20:54 InitParameterInteraction: parameter interaction: -whitelistforcerelay=1 -> setting -whitelistrelay=1
2018-02-09 20:20:54 Assuming ancestors of block 000000000000001c172f518793c3b9e83f202284615592f87fe3506ce964dcd4 have valid signatures.
2018-02-09 20:20:54 Using BerkeleyDB version Berkeley DB 4.8.30: (April 9, 2010)
2018-02-09 20:20:54 Default data directory /root/.learning
2018-02-09 20:20:54 Using data directory /root/.learning
2018-02-09 20:20:54 Using config file /root/.learning/learning.conf
2018-02-09 20:20:54 Using at most 256 connections (1024 file descriptors available)
2018-02-09 20:20:54 Using 0 threads for script verification
2018-02-09 20:20:54 Binding RPC on address 0.0.0.0 port 9998 failed.
2018-02-09 20:20:54 HTTP: creating work queue of depth 16
2018-02-09 20:20:54 Config options rpcuser and rpcpassword will soon be deprecated. Locally-run instances may remove rpcuser to use cookie-based auth, or may be replaced with rpcauth. Please see share/rpcuser for rpcauth auth generation.
2018-02-09 20:20:54 HTTP: starting 4 worker threads
2018-02-09 20:20:54 Failed to create backup, file already exists! This could happen if you restarted wallet in less than 60 seconds. You can continue if you are ok with this.
2018-02-09 20:20:54 Warning: Failed to create backup, file already exists! This could happen if you restarted wallet in less than 60 seconds. You can continue if you are ok with this.
2018-02-09 20:20:54 Using wallet wallet.dat
2018-02-09 20:20:54 init message: Verifying wallet...
2018-02-09 20:20:54 CDBEnv::Open: LogDir=/root/.learning/database ErrorFile=/root/.learning/db.log
2018-02-09 20:20:54 scheduler thread start
2018-02-09 20:20:54 Bound to [::]:9365
2018-02-09 20:20:54 Bound to 0.0.0.0:9365
2018-02-09 20:20:54 Cache configuration:
2018-02-09 20:20:54 * Using 37.5MiB for block index database
2018-02-09 20:20:54 * Using 8.0MiB for chain state database
2018-02-09 20:20:54 * Using 254.5MiB for in-memory UTXO set (plus up to 286.1MiB of unused mempool space)
2018-02-09 20:20:54 init message: Loading block index...
2018-02-09 20:20:54 Opening LevelDB in /root/.learning/blocks/index
2018-02-09 20:20:54 Opened LevelDB successfully
2018-02-09 20:20:54 Using obfuscation key for /root/.learning/blocks/index: 0000000000000000
2018-02-09 20:20:54 Wiping LevelDB in /root/.learning/chainstate
2018-02-09 20:20:54 Opening LevelDB in /root/.learning/chainstate
2018-02-09 20:20:55 Opened LevelDB successfully
2018-02-09 20:20:55 Wrote new obfuscate key for /root/.learning/chainstate: 00105db002ad62c7
2018-02-09 20:20:55 Using obfuscation key for /root/.learning/chainstate: 00105db002ad62c7
2018-02-09 20:20:55 ERROR: LoadBlockIndexGuts: failed to read value
2018-02-09 20:20:55 : Error loading block database.
Please restart with -reindex or -reindex-chainstate to recover.
2018-02-09 20:20:55 Aborted block database rebuild. Exiting.
2018-02-09 20:20:55 scheduler thread interrupt
2018-02-09 20:20:55 PrepareShutdown: In progress...
2018-02-09 20:20:55 Verifying mncache.dat format...
2018-02-09 20:20:55 Loaded info from mncache.dat 0ms
2018-02-09 20:20:55 Masternodes: 0, peers who asked us for Masternode list: 0, peers we asked for Masternode list: 0, entries in Masternode list we asked for: 0, nDsqCount: 0
2018-02-09 20:20:55 Writing info to mncache.dat...
2018-02-09 20:20:55 Written info to mncache.dat 0ms
2018-02-09 20:20:55 Masternodes: 0, peers who asked us for Masternode list: 0, peers we asked for Masternode list: 0, entries in Masternode list we asked for: 0, nDsqCount: 0
2018-02-09 20:20:55 mncache.dat dump finished 0ms
2018-02-09 20:20:55 Verifying mnpayments.dat format...
2018-02-09 20:20:55 Loaded info from mnpayments.dat 0ms
2018-02-09 20:20:55 Votes: 0, Blocks: 0
`
I think i did it all correct but now i cant figure out how to upgrade the blockchain being a 15 year old i believe the bests way to learn from is experience. I want to do this when am an adult and i find the best way to learn is by doing it.
So any help would be awesome. Most people don't help because they say its too hard but i always do it anyways this is a harder task but that has never stop me before probably not going to get help but how do you know if you don't try :) have a great day thank you.
