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RTL/.github/docs/Channel_backups.md

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### Channel Backups
Static Channel Backup APIs of LND has been leveraged to provide channel backup feature on RTL.
#### Backup folder location
Default location: If no folder location is specified in the RTL conf files (single or mult-node setup), RTL will create a folder `backup` on the RTL root. If multiple nodes are being managed via RTL, multiple node sub-folders will be created in the `backup` folder.
User defined: User can specify the folder where channel backups should be created, by setting a config variable `channelBackupPath` in the `RTL-Config.json` file. Please ensure that RTL has the permission to write in the specified folder location.
Environment variable: Channel backup folder location can also be controlled via an environment variable `CHANNEL_BACKUP_PATH`
#### Backup execution
Channel backups will be taken at the following instances:
- Server startup: RTL will automatically execute all channel backup, everytime the server is started.
- Channel open/close: RTL will automatically execute all channel backup, everytime a new channel is opened or an existing channel is closed.
- Manual backups: A user can also manually execute the backup commands. The menu options are available on the `Backup` page under `Channels`. User can take all channel backups or individual channel backups as well as verify all/individual channel backup files.
#### Process to restore from the channel backup files
##### Assumptions
- The node has been restored with a LND's cipher seed mnemonic.
- RTL generated channel backup file/s is available (all channel backup file is `channel-all.bak`).
##### Steps to recover the funds
- Create a `restore` folder in your backup location folder, as specified in the RTL config file.
- Place the channel backup file in the `restore` folder.
- Access the `Restore` page under the `Channels` section of RTL.
- RTL will list the options to restore funds from the all channel file or individual channel backup file.
- Click on the `Restore` button on the grid to restore the funds.
- Once the restore function is executed successfully, RTL will rename the backup file and it will no longer be visible on the page.
- Restore function will force close the channels and recover the funds from them.
- The pending close channels can be viewed on the Pending page under `Channels`.
- The corresponding pending on-chain transactions can also be viewed on the Transactions list under the `On-Chain` page.
- Once the transactions are confirmed, the channels funds will be restored to your LND Wallet.