move wallet.dat from windows to linux

achow101

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Activity: 3458

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Just writing some code

Quote from: bob123 on February 15, 2018, 01:54:03 AM

If you created your wallet in an old version (< 0.13, i think) and upgraded it, yes.

No, there is currently no way to upgrade a non-HD wallet to a HD wallet. Upgrading requires generating a completely new wallet and moving your coins there or importing all of your private keys.

Quote from: jrian on February 15, 2018, 05:59:48 AM

So, first, when my keypool empty - I cannot generate new bitcoin addresses = Payment system not working
Second - I have to enter password for wallet. On online computer. It's bad.

That is correct, you cannot generate new addresses to refill the keypool without unlocking your wallet. This is for security reasons. The private key needs to be stored somewhere once it has been generated. It cannot be stored unencrypted as that would be a security violation. The only way to store it encrypted is to provide the password so that the private key can be encrypted.

jrian

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Activity: 39

Merit: 6

Quote from: bob123 on February 15, 2018, 01:54:03 AM

Quote from: jrian on February 14, 2018, 05:59:20 PM

i'm already have HD wallet by default, with Bitcoin Core 0.15 - right?

If you created your wallet in 0.15, yes.
If you created your wallet in an old version (< 0.13, i think) and upgraded it, yes.
If you created your wallet before 0.13 and didn't upgrade the wallet with the startup command -upgradewallet, then no.

Quote from: jrian on February 14, 2018, 05:59:20 PM

Are you sure I dont have to enter password and decrypt wallet to refill my keypool? Because I dont think so. And I dont want to enter password for this wallet on online computer.

You don't have to "refill your keypool".
You can simply generate addresses on demand, without having to worry about inconsistency.
The first 100 generated addresses on your linux machine will be equivalent to the first 100 generated addresses on your windows machine.
The next 1000 (created on linux) will match those 1000 (created on windows), and so on.

So I made a tests:

bitcoin-cli getwalletinfo
{
"walletname": "wallet.dat",
"walletversion": 139900,
"balance": 0.00000000,
"unconfirmed_balance": 0.00000000,
"immature_balance": 0.00000000,
"txcount": 0,
"keypoololdest": 1518648916,
"keypoolsize": 944,
"keypoolsize_hd_internal": 1000,
"unlocked_until": 0,
"paytxfee": 0.00000000,

I have 1000 keys in pool by default.

Then I run: while true; do bitcoin-cli getnewaddress;done

And now:
"keypoolsize": 0,
"keypoolsize_hd_internal": 1000,

and

bitcoin-cli getnewaddress
error code: -12
error message:
Error: Keypool ran out, please call keypoolrefill first

and

bitcoin-cli keypoolrefill 1000
error code: -13
error message:
Error: Please enter the wallet passphrase with walletpassphrase first.

So, first, when my keypool empty - I cannot generate new bitcoin addresses = Payment system not working
Second - I have to enter password for wallet. On online computer. It's bad.

LoyceV

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Activity: 3290

Merit: 16489

Thick-Skinned Gang Leader and Golden Feather 2021

Quote from: jrian on February 14, 2018, 05:59:20 PM

i'm already have HD wallet by default, with Bitcoin Core 0.15 - right?

Check the icon on the bottom-right corner.

Quote from: bob123 on February 15, 2018, 01:54:03 AM

Quote from: jrian on February 14, 2018, 05:59:20 PM

Are you sure I dont have to enter password and decrypt wallet to refill my keypool? Because I dont think so. And I dont want to enter password for this wallet on online computer.

You don't have to "refill your keypool".
You can simply generate addresses on demand, without having to worry about inconsistency.

@bob123: I think you're wrong here: as far as I know, you need to enter your password to refill keypool.

Click Help > Debug window > Console, and enter getwalletinfo. It tells you the keypool size:

Code:

"keypoolsize": 1000,

Suggestion: if you copy your wallet.dat from the offline to the online computer before your keypool runs out, you don't have to enter your password on the online computer. Unless you use a lot of new addresses, this will work. I would last years with 1000 addresses.

bob123

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Activity: 1624

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Quote from: jrian on February 14, 2018, 05:59:20 PM

i'm already have HD wallet by default, with Bitcoin Core 0.15 - right?

If you created your wallet in 0.15, yes.
If you created your wallet in an old version (< 0.13, i think) and upgraded it, yes.
If you created your wallet before 0.13 and didn't upgrade the wallet with the startup command -upgradewallet, then no.

Quote from: jrian on February 14, 2018, 05:59:20 PM

Are you sure I dont have to enter password and decrypt wallet to refill my keypool? Because I dont think so. And I dont want to enter password for this wallet on online computer.

You don't have to "refill your keypool".
You can simply generate addresses on demand, without having to worry about inconsistency.
The first 100 generated addresses on your linux machine will be equivalent to the first 100 generated addresses on your windows machine.
The next 1000 (created on linux) will match those 1000 (created on windows), and so on.

jrian

jr. member

Activity: 39

Merit: 6

Quote from: bob123 on February 14, 2018, 02:28:44 PM

Quote from: jrian on February 14, 2018, 01:44:21 PM

Can you please remember, maybe you update your Bitcoin Core and after you got just 1000 keys in keypool

If you create a new (Hierarchical Deterministic [1]) wallet and send your funds to this new wallet,
you won't have to fill any keypool. You will be able to generate an 'infinite' amount of addresses.

The addresses will be created in the same order in both of your wallets.

You can think of it as a mathemtical equation to derive a private key from the seed (plus a counter).

[1] HD wallet: https://en.bitcoin.it/wiki/Deterministic_wallet

i'm already have HD wallet by default, with Bitcoin Core 0.15 - right?

Are you sure I dont have to enter password and decrypt wallet to refill my keypool? Because I dont think so. And I dont want to enter password for this wallet on online computer.

bob123

legendary

Activity: 1624

Merit: 2481

Quote from: jrian on February 14, 2018, 01:44:21 PM

Can you please remember, maybe you update your Bitcoin Core and after you got just 1000 keys in keypool

If you create a new (Hierarchical Deterministic [1]) wallet and send your funds to this new wallet,
you won't have to fill any keypool. You will be able to generate an 'infinite' amount of addresses.

The addresses will be created in the same order in both of your wallets.

You can think of it as a mathemtical equation to derive a private key from the seed (plus a counter).

[1] HD wallet: https://en.bitcoin.it/wiki/Deterministic_wallet

jrian

jr. member

Activity: 39

Merit: 6

Quote from: LoyceV on February 13, 2018, 01:24:16 PM

Do you want to move it, or copy it and keep using both?

When the default keypool was only 100, I once set it to 10,000. Now it's back to the default value (1000), I'm not sure at what point it got lower again, but it did. Keep this in mind!
If at all possible, can you move to a new HD wallet? With a HD wallet you don't have to worry about keypools again (unless you change the password).

One last thought: although it works fine to use the same wallet on two computers, your address book entries will only show up on the computer that created them.

Thats why i'm asking. I dont want to loose all new keys after keypoolrefill.

Can you please remember, maybe you update your Bitcoin Core and after you got just 1000 keys in keypool?

seoincorporation

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Activity: 3346

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Quote from: jrian on February 13, 2018, 01:11:09 PM

Hello,

I have password-encrypted wallet.dat on windows computer.
On windows, I want to refill keypool with 5000 addresses (keypoolrefill )
And I want to move this wallet to linux.
Bitcoin Core 0.15 on both computers.

Is that works? Any future problems with wallet encryption or keypool refill?

Thanks

Do you have the original password you generated when you created the wallet.dat? if you have it then there shouldn't be a problem for the import.

But what i recommend is to get a backup of your privatekeys, that way you will be able to import your addys to any wallet in the future, no matter the operative system or the wallet by it self, at end all of them support importing a private key. Wink

ntoken

newbie

Activity: 32

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Btw You can create a newly backup wallet with the command "backupwallet" in "Tools" -> "Debug console".

Welsh

staff

Activity: 3304

Merit: 4115

You should be able to just move it without any issues as long as the backup was made correctly and isn't missing anything, and isn't corrupted. You should check that it works first before moving it over.

It should be fine to just move it into the Linux machine, but I would suggest you keep a backup on a USB or something anyway just to be safe.

LoyceV

legendary

Activity: 3290

Merit: 16489

Thick-Skinned Gang Leader and Golden Feather 2021

Do you want to move it, or copy it and keep using both?

When the default keypool was only 100, I once set it to 10,000. Now it's back to the default value (1000), I'm not sure at what point it got lower again, but it did. Keep this in mind!
If at all possible, can you move to a new HD wallet? With a HD wallet you don't have to worry about keypools again (unless you change the password).

One last thought: although it works fine to use the same wallet on two computers, your address book entries will only show up on the computer that created them.

jrian

jr. member

Activity: 39

Merit: 6

Hello,

I have password-encrypted wallet.dat on windows computer.
On windows, I want to refill keypool with 5000 addresses (keypoolrefill )
And I want to move this wallet to linux.
Bitcoin Core 0.15 on both computers.

Is that works? Any future problems with wallet encryption or keypool refill?

Thanks

Topic: move wallet.dat from windows to linux (Read 328 times)