Hi All,

I found this document from Feb 2019, and after some amazing help from Craig and others I came up with this:

Proposed road map for an installation of a system disk and two Data disks set up as a RAID1 array

1Tb SSD and 2 x 2Tb SATA HDDs

Using Gparted partition the SSD

512MB EFI Partition dev/sda1 formatted FAT32 primary (boot?)

8 Gb SWAP

rest of the disk /dev/sda3 primary formatted btrfs

Partition the first HDD /dev/sdb1 primary formatted btrfs (Disk has data now so leave this alone)

Second HDD same size leave completely blank (also leave this alone)


Remove the gparted disk and insert the Ubuntu Server disk commence the install

Install the system and add the GUI using tasksel


After the system is installed run the- device add - process and the balance commands

two lines in the terminal -          my question is will these commands remain the same?

sudo btrfs device add -f /dev/sdc1 /data
sudo btrfs balance start -dconvert=raid1 -mconvert=raid1 /data

You can do this after the system is installed, or from a root shell while
booted on gparted.  It doesn't matter either way, although it's probably
better/easier to do it from gparted (there'll only be the one /data fs for the
ubuntu installer to detect so you won't end up with /data0 and /data1 again)
craig

Many thanks
Andrew Greig