Difference between revisions of "Backup"

From lightningwiki.net
Jump to: navigation, search
(Channel information)
(Channel information)
Line 18: Line 18:
 
{{NOTE|On 2019-04-02 Static Channel Backup was merged into LND Master}}
 
{{NOTE|On 2019-04-02 Static Channel Backup was merged into LND Master}}
 
Once you start a channel, take a [https://github.com/lightningnetwork/lnd/pull/2313 static channel backup]. This has to be done only once.
 
Once you start a channel, take a [https://github.com/lightningnetwork/lnd/pull/2313 static channel backup]. This has to be done only once.
 +
 +
After that, if your node dies, you can recover using the seed + the static-channel-backup and retrieve both your onchain and channel balance!
  
 
=== Example Static channel backup commands ===
 
=== Example Static channel backup commands ===

Revision as of 08:01, 2 April 2019

Exclamation-triangle-solid-with-text.svg
Alert! Be careful!
Reliable backups are being worked on at the moment

Making backups is not easy. You can backup your key, but to recover a disk failure (for example), you still need the channel state.

The problem is that if you announce an old channel state (after you recovered a backup), this is detected as Fraud and you might lose your funds.

Poor mans solution

Probably just take your wallet-file... See github for more info.

Hardware

If you’re putting a lot of money on your Lightning routing node, please use a reliable hard drives (with mirroring).

Data Loss Protection

Data loss protection

Channel information

LND

Receipt-solid-with-text.svg
Side note:
On 2019-04-02 Static Channel Backup was merged into LND Master

Once you start a channel, take a static channel backup. This has to be done only once.

After that, if your node dies, you can recover using the seed + the static-channel-backup and retrieve both your onchain and channel balance!

Example Static channel backup commands

>tlncli exportchanbackup --all

{
        "chan_points": [
                "a173ca220bb644b4be03e44285b1541382c85fc3de1f9f1e0f317892c55cfd29:0",
                "30ad897d900d837728e09bdb2f4859354207599522fab72d20582f5a713f983d:0",
                "2f86e0049c4488b2cad1a6cffffc56ffd56ba5e639b79994baed64e87e6849f2:0"
        ],
        "multi_chan_backup": "0f955a78d0df14db44769c946a537a9c81174a097e3***6ecf7f4ab1afaa0e06"
}

>tlncli verifychanbackup --multi_backup 0f955a78d0df14db44769c946a537a9c81174a097e3***6ecf7f4ab1afaa0e06

{
    "singles_valid": true,
    "multi_valid": true
}

>tlncli restorechanbackup --multi_backup 0f955a78d0df14db44769c946a537a9c81174a097e3***6ecf7f4ab1afaa0e06

>tlncli pendingchannels

{
    "total_limbo_balance": "0",
    "pending_open_channels": [
    ],
    "pending_closing_channels": [
    ],
    "pending_force_closing_channels": [
    ],
    "waiting_close_channels": [
        {
            "channel": {
                "remote_node_pub": "031673e26fa50f5e1598caff98b8be466998486bd876751b7824ad8def3aa7e76d",
                "channel_point": "30ad897d900d837728e09bdb2f4859354207599522fab72d20582f5a713f983d:0",
                "capacity": "500000",
                "local_balance": "0",
                "remote_balance": "0"
            },
            "limbo_balance": "0"
        },
        {
            "channel": {
                "remote_node_pub": "03b8e1dfc4bf42adec135350dd51784e5b55055f5647d031771bdf439f5de87b88",
                "channel_point": "2f86e0049c4488b2cad1a6cffffc56ffd56ba5e639b79994baed64e87e6849f2:0",
                "capacity": "700000",
                "local_balance": "0",
                "remote_balance": "0"
            },
            "limbo_balance": "0"
        },
        {
            "channel": {
                "remote_node_pub": "03ecd95e86e780ae82139c3217b527073622d28c4d8a53b76142a7b7b1d1e36975",
                "channel_point": "a173ca220bb644b4be03e44285b1541382c85fc3de1f9f1e0f317892c55cfd29:0",
                "capacity": "600000",
                "local_balance": "0",
                "remote_balance": "0"
            },
            "limbo_balance": "0"
        }
    ]
}
>tlncli walletbalance

{
    "total_balance": "108199538",
    "confirmed_balance": "108199538",
    "unconfirmed_balance": "0"
}
>tlncli pendingchannels

{
    "total_limbo_balance": "0",
    "pending_open_channels": [
    ],
    "pending_closing_channels": [
    ],
    "pending_force_closing_channels": [
    ],
    "waiting_close_channels": [
    ]
}
>tlncli walletbalance

{
    "total_balance": "109818740",
    "confirmed_balance": "109818740",
    "unconfirmed_balance": "0"
}
>tlncli listunspent --min_confs 0

{
        "utxos": [
                {
                        "address_type": 0,
                        "address": "tb1qxx25r275r08z3ygagg4cawxp60gj8ptynkvnwc",
                        "amount_sat": 1619202,
                        "pk_script": "0014319541abd41bce28911d422b8eb8c1d3d1238564",
                        "outpoint": "d7f037b2757e27ab16018c03c811f0f494fdad2dc029fc0810b108e103725da5:0",
                        "confirmations": 13
                },

Commitment revocation private key

Every commitment transaction has a unique commitment revocation private-key value that allows the other peer to spend all outputs immediately: revealing this key is how old commitment transactions are revoked. To support revocation, each output of the commitment transaction refers to the commitment revocation public key.