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docs: update in-place rescan section

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Oliver Gugger 2020-10-24 16:34:55 +02:00
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@ -190,30 +190,25 @@ rescan.
The recovery methods described above assume a clean slate for a node, so
there's no existing UTXO or key data in the node's database. However, there're
times when an _existing_ node may want to _manually_ rescan the chain. We have
a tool for that! The tool is called
[`dropwtxmgr`](https://github.com/btcsuite/btcwallet/tree/master/cmd/dropwtxmgr).
It can be installed with the following command:
a command line flag for that! Just start `lnd` and add the following flag:
```
⛰ go get -v -u github.com/btcsuite/btcwallet/cmd/dropwtxmgr
⛰ lnd --reset-wallet-transactions
```
The `dropwtxmgr` tool will _reset_ the best synced height of the wallet back to
its birthday, or genesis if the birthday isn't known (for some older wallets).
In order to run the tool, you must first **shutdown `lnd`**. Once `lnd` is
shutdown, the rescan can be initiated with the following commands:
```
⛰ cp $HOME/.lnd/data/chain/bitcoin/mainnet/wallet.db $HOME/wallet.db # Copy the existing databse just in case!
⛰ dropwtxmgr --db=$HOME/.lnd/data/chain/bitcoin/mainnet/wallet.db
```
The `--reset-wallet-transactions` flag will _reset_ the best synced height of
the wallet back to its birthday, or genesis if the birthday isn't known (for
some older wallets).
Once the above command returns (if it hangs for a while, then `lnd` may not
actually be shutdown, so double check!), `lnd` can be restarted. After it's
restarted, then the wallet should being rescanning. An entry resembling the
following will show up in the logs once it's complete:
Just run `lnd` with the flag, unlock it, then the wallet should begin
rescanning. An entry resembling the following will show up in the logs once it's
complete:
```
[INF] LNWL: Finished rescan for 800 addresses (synced to block 3032830c812a4a6ea305d8ead13b52e9e69d6400ff3c997970b6f76fbc770920, height 748)
```
**Remember to remove the flag once the rescan was completed successfully to
avoid rescanning again for every restart of lnd**.
## Off-Chain Recovery
After version `v0.6-beta` of `lnd`, the daemon now ships with a new feature