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add BTRFS info

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rootzoll 2020-02-20 02:44:23 +01:00
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24
FAQ.md
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@ -860,6 +860,30 @@ To turn it on run from terminal: `/home/admin/config.scripts/blitz.ups.sh on apc
If you have other UPS models or ways to connect ... feel free to extend this script.
## Why use BTRFS on RaspiBlitz?
The file system [BTRFS](https://de.wikipedia.org/wiki/Btrfs) for your HDD/SSD provides two new features to make the datastorage more resilient:
### Storing your important Data in RAID1 with a USB Thumb Drive
BTRFS comes with build in RAID features - that means that data can be stored on two physical drives at the same time and if one is failing the other one can be used to heal the other one or its replacement.
For the Raspiblitz this means that you can connect an additional 32GB USB3 Thumb Drive (under 10 USD) and have it running in a RAID with your HDD/SSD - having your LND channel data and all other important data of your RaspiBlitz double safe.
### Snapshotting the Blockchain
BTRFS comes with a build in snapshot feature - that means that your RaspiBlitz can make every day a backup of the blockchain data and if a blockchain corruption occurs (exmaple thru a power outage) there is no need to sync the complete chain again. Just switch back to the last backup state and quickly sync up from there. On BTRFS such backups can be done as snapshots that dont need much more space on the drive and are quicly done - no need to buy a bigger SSD or wait for copying over 200GB.
## How to use BTRFS on RaspiBlitz?
Because the BTRFS is still experimental its a bit hidden to activate. There are two ways:
- When you start a fresh setup just connect a 32GB Thumb Drive on the second USB3 port from the beginning and you should be asked during HDD setup if you want to try out BTRFS and gave the Thumb Drive as RAID1.
- If you have a existing RaspiBlitz you want to switch to BTRFS then you need to export a Migration File (MAINMENU > REPAIR > MIGRATION) an then format your HDD/SSD clean. When you import a Migration File during a fresh Setup (see above) you will get the option to format the HDD/SSD with BTRFS.
Once the Blitz is running on BTRFS you can use the '/home/admin/config.scripts/blitz.datadrive.sh' script to add a RAID drive or make a snapshot.
## How to recover a BTRFS partition?
This articles goes thru the usual options:

10
README.md
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@ -203,7 +203,7 @@ Automatically after login per SSH as admin to the RaspiBlitz, it will run a hard
If you see a warning there, please read carefully, because a lot of things that go wrong later (errors and even loss of funds) relate of problems with the hardware. If you get an OK here ... you are good to go :)
In the beginning you can choose how to setup your RaspiBlitz, by running on Bitcoin or Litecoin with Lightning. This is also the point where you can import a Migration file from an older RaspiBlitz - read about Migration further down. The default is here to choose Bitcoin.
In the beginning you can choose how to setup your RaspiBlitz, by running on Bitcoin or Litecoin with Lightning. This is also the point where you can import a Migration file from an older RaspiBlitz - read about Migration [further down](README.md#import-a-migration-file). The default is here to choose Bitcoin.
![SSH0](pictures/ssh0-welcome2.png)
@ -758,7 +758,7 @@ This stops your RaspiBlitz and creates a LND-Rescue ZIP file you can download pe
##### MIGRATION: Migrate Bitz Date to new Hardware
This stops your RaspiBlitz and creates a Migration ZIP file you can download/export per SCP to your laptop. This contains all important data of your RaspiBlitz including LND, your Blitz configuration and also data from your installed apps. Can be used to migrate your RaspiBlitz to a new hardware - for example if your want to replace the HDD with a SSD.
This stops your RaspiBlitz and creates a Migration ZIP file you can download/export per SCP to your laptop. This contains all important data of your RaspiBlitz including LND, your Blitz configuration and also data from your installed apps. Can be used to migrate your RaspiBlitz to a new hardware - for example if your want to replace the HDD with a SSD. How to import a Migration File [see here](README.md#import-a-migration-file).
*NOTICE: If you start your RaspiBlitz after exporting the migration file again it is outdated and using it can risk loosing your channel funds.*
@ -805,6 +805,8 @@ With the command `raspiblitz` it's possible to return to the main menu.
As mentioned above you can export a Migration File from your Raspiblitz with MAINMENU > REPAIR > MIGRATION and store it on your laptop.
A Migration file contains all the important data of your RaspiBlitz like your LND data, Bitcoin Wallet, raspiblitz.config, TOR/SSH keys .. and also the data of installed apps. You can use this to migrate your RaspiBlitz to a new hardware.
If you want to it to import it again to a new RaspiBlitz (for example with an updated HDD/SSD) you can choose the MIGRATION option on the first setup dialog after the Hardwaretest (where you normally choose between Bitcoin & Litecoin).
![SSH0](pictures/ssh0-welcome2.png)
@ -821,7 +823,7 @@ Finally you need to decide how to get a copy of the blockchain data again for yo
![MIGRATION2](pictures/migration2.png)
Here you have the two options [SYNC](README.md#) and [COPY](README.md#) as mentioned in the normal setup.
Here you have the two options [SYNC](README.md#1-sync---selfvalidate-all-blocks) and [COPY](README.md#2-copy---copy-from-laptop-or-another-raspiblitz-over-local-network) as mentioned in the normal setup.
Then RaspiBlitz will reboot and start the normal recovery process to install all the services that are defined by the raspiblitz.config from your Migration File.
@ -844,6 +846,8 @@ To develop your own scripts/apps and to connect other services/apps to your Rasp
* `gRPC` running on port 10009 (public) [DOC](https://api.lightning.community/)
* `REST` running on port 8080 (public) [DOC](https://api.lightning.community/rest/index.html)
If you activate TOR then your LND gRPC & REST APIs are also reachable publicly as a Hidden Service.
### Backup for On-Chain- & Channel-Funds
Since LND v0.6 (and RaspiBlitz v1.2) a feature called Static-Channel-Backups is available. Within RaspiBlitz this is used when a `channel.backup` file is mentioned.