Hi! I’m writing this article as a mini-HOWTO on how to setup a btrfs-raid1 volume on encrypted disks (luks). This page servers as my personal guide/documentation, althought you can use it with little intervention.

Disclaimer: Be very careful! This is a mini-HOWTO article, do not copy/paste commands. Modify them to fit your environment.

$ date -R
Thu, 03 Dec 2020 07:58:49 +0200

Prologue

I had to replace one of my existing data/media setup (btrfs-raid0) due to some random hardware errors in one of the disks. The existing disks are 7.1y WD 1TB and the new disks are WD Purple 4TB.

Western Digital Green  1TB, about  70€ each, SATA III (6 Gbit/s), 7200 RPM, 64 MB Cache
Western Digital Purple 4TB, about 100€ each, SAT...

Network-Bound Disk Encryption

I was reading the redhat release notes on 7.4 and came across: Chapter 15. Security

New packages: tang, clevis, jose, luksmeta

Network Bound Disk Encryption (NBDE) allows the user to encrypt root volumes of the hard drives on physical and virtual machines without requiring to manually enter password when systems are rebooted.

That means, we can now have an encrypted (luks) volume that will be de-crypted on reboot, without the need of typing a passphrase!!!

Really - really useful on VPS (and general in cloud infrastructures)

Useful Links

• https://github.com/latchset/tang
• To see the entire article, click uppon article's title/link.
  Thank you.

I’ve written down some simple (i hope) instructions on creating an encrypted btrfs raid1 disk !

My notes have the form of a mini howto, you can read all about them here:

Btrfs with Multiple Devices on LUKS