Import/Export wallet vi bitcoin-cli. Bitcoin abc node

Question

I'd like move my bitcoin cash wallet from one server to the other using the cli.

Server 1: bitcoin abc: 0.17.2. Server 2: bitcoin abc: 0.18.0

I have done the following:

1. ran the command: backupwwallet "myfile.dat" on server 1 successfully.
2. copy the "myfile.dat" to server 2.
3. rand the command: importwallet "myfile.dat".

I get the following the error when trying to import the wallet:

error code: -8
error message:
Cannot open wallet dump file.

I have also tried to replace stop the node on server 2 and copy the wallet.dat over to the other server and then start the wallet up again on server 2. I get the following error in the logs:

CDBEnv::Open: LogDir=/home/cryptodaemon/.bitcoincash/database ErrorFile=/home/cryptodaemon/.bitcoincash/db.log
2018-09-09 07:48:21 Failed to rename wallet.dat to wallet.dat.1536479301.bak

How can I move the wallet from one server to another? Could anyone give me pointers in doing this?

Answer 1

importwallet is the opposite RPC of dumpwallet, not backupwallet.

backupwallet creates a copy of your wallet.dat file. You restore that file by putting it back in the data directory.

dumpwallet creates a wallet dump (just private keys, no history, addresses, labels, accounts, ...), which can be imported into an existing wallet using importwallet.

Answer 2

Probably this is Bitcoin ABC's bug. As an alternative to backupwallet, dumpwallet might work.

In addition, please file a bug report at https://github.com/Bitcoin-ABC/bitcoin-abc/issues.

Answer 3

Check which database version the various abc -qt wallets use as their backend. Any change will prevent using the old one from writing a wallet.dat suitable for the new one. To do what you are doing, I'm on step 2 of - create an account at a reputable exchange - do a small test transaction to check that your coin gets there - do another small test transaction to check that you can get coin back to your new wallet - move your coin from home to the exchange - move your coin from the exchange to your new wallet at home That is four transaction fees just because someone thought that bdb4.8 was too samey to keep the same.